/* ── Consolidated Navigation Shell Styles ── */
.dsn-brand-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.25rem 0;
    margin-bottom: 0.5rem;
    min-width: 0;
    flex-shrink: 0;
}



.desktop-side-nav:not(.expanded) #dsnIndicator {
    display: none;
}

.desktop-side-nav.expanded .dsn-collapse-btn {
    margin-left: auto;
}

.dsn-collapse-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    flex-shrink: 0;
    background: transparent;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    color: var(--text-muted, #64748b);
    padding: 0;
    transition: background 0.2s ease, color 0.2s ease;
    z-index: auto;
}

.dsn-collapse-btn:hover {
    background: transparent;
    color: var(--primary);
    box-shadow: none;
}

.dsn-collapse-btn i {
    font-size: 1rem;
    pointer-events: none;
}

.dsn-chevron-icon {
    transition: none;
}

.desktop-side-nav.is-toggling .dsn-chevron-icon {
    transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}


.dsn-collapse-btn--solo {
    display: none;
}

@media (max-width: 1023px) {
    .dsn-collapse-btn--solo {
        display: none !important;
    }

    .desktop-side-nav .dsn-brand-row {
        display: flex !important;
    }
}

.desktop-side-nav:not(.expanded) .dsn-brand-row {
    display: none !important;
}

.desktop-side-nav.expanded .dsn-brand-row {
    display: flex !important;
}

.desktop-side-nav.expanded .dsn-collapse-btn--solo {
    display: none !important;
}

.desktop-side-nav:not(.expanded) .dsn-collapse-btn--solo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    margin: 0 auto 0.5rem auto;
    border-radius: var(--radius-md);
}

.desktop-side-nav:not(.expanded) .dsn-chevron-icon {
    display: none;
}

.desktop-side-nav:not(.expanded) .dsn-bars-icon {
    display: inline-block;
}

.desktop-side-nav.expanded .dsn-chevron-icon {
    display: inline-block;
}

.desktop-side-nav.expanded .dsn-bars-icon {
    display: none;
}

@media (min-width: 1181px) {
    .desktop-side-nav:not(.expanded) .dsn-chevron-icon {
        display: inline-block;
    }

    .desktop-side-nav:not(.expanded) .dsn-bars-icon {
        display: none;
    }

    .desktop-side-nav:not(.expanded) .dsn-collapse-btn {
        align-self: center;
        margin: 0 auto;
        width: 42px;
        height: 42px;
        border-radius: var(--radius-md);
    }

    .desktop-side-nav:not(.expanded) .dsn-chevron-icon {
        transform: rotate(180deg);
    }
}

.dsn-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
    padding: 0.4rem 0.5rem;
    min-width: 0;
    flex: 1;
    transition: none;
}

.desktop-side-nav.expanded .dsn-brand {
    display: flex !important;
}

.dsn-brand img {
    width: 28px;
    height: 28px;
    object-fit: contain;
    flex-shrink: 0;
    border-radius: 6px;
}

.reveal-eye,
.reveal-eye *,
.reveal-eye svg,
.reveal-eye i {
    color: #fff !important;
    fill: #fff !important;
    stroke: #fff !important;
    opacity: 1 !important;
}

/* ── SIDE NAV LINKS & BUTTONS ── */
.dsn-link,
.dsn-btn {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.55rem 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: background 0.12s ease;
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font-display);
    margin: 0;
    border: none;
    background: transparent;
    width: 100%;
    cursor: pointer;
    min-height: 44px;
}

.dsn-link:hover,
.dsn-btn:hover {
    background: var(--btn-hover-bg);
    color: var(--btn-text);
}

.dsn-link:focus-visible,
.dsn-btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.dsn-link.active {
    background: color-mix(in srgb, var(--primary) 12%, transparent);
    color: var(--primary);
    font-weight: 600;
    position: relative;
    border-left: 2px solid var(--primary);
}
.dsn-btn.active {
    background: color-mix(in srgb, var(--primary) 12%, transparent);
    color: var(--primary);
    font-weight: 600;
}

.dsn-link.active i {
    color: var(--primary);
}
html[data-theme="dark"] .dsn-link.active {
    color: var(--text-primary);
}
html[data-theme="dark"] .dsn-link.active i {
    color: var(--text-primary);
}

.dsn-link.room-tab-btn--disabled,
.dsn-btn.room-tab-btn--disabled {
    opacity: 0.38;
    cursor: not-allowed;
    pointer-events: auto;
}
.dsn-link.room-tab-btn--disabled:hover,
.dsn-btn.room-tab-btn--disabled:hover {
    background: transparent;
    color: var(--text-secondary);
}

/* ── PROFILE DROPDOWN ── */
.dsn-profile-dropdown {
    display: none;
    flex-direction: column;
    position: fixed;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-modal);
    z-index: 99999;
    padding: 0.5rem;
    left: auto !important;
    min-width: 200px;
    animation: slideUpFade 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}


@keyframes slideUpFade {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── UI FEEDBACK STYLES ── */
.streak-nudge-toast {
    display: flex;
    position: fixed;
    bottom: calc(68px + var(--safe-bottom) + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: #1e1b4b;
    border: 1px solid #7F77DD;
    border-radius: var(--radius-lg);
    padding: .75rem 1.1rem;
    align-items: center;
    gap: .75rem;
    box-shadow: 0 8px 32px rgba(127, 119, 221, .25);
    z-index: 9998;
    font-size: .8rem;
    color: #fef3c7;
    white-space: nowrap;
    max-width: calc(100vw - 2rem);
    animation: pwaSlideUp .35s cubic-bezier(.22, 1, .36, 1);
}

#xp-levelup-toast,
#sw-update-toast,
#pwa-bar {
    display: none;
    position: fixed;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(15, 23, 42, 0.92);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-radius: var(--radius-lg);
    padding: .8rem 1.1rem;
    align-items: center;
    gap: .85rem;
    box-shadow: 0 8px 40px rgba(99, 102, 241, .25);
    z-index: 10000;
    font-size: .8rem;
    color: #e0e7ff;
    white-space: nowrap;
    max-width: calc(100vw - 2rem);
    animation: pwaSlideUp .35s cubic-bezier(.22, 1, .36, 1);
}

[data-theme="light"] #xp-levelup-toast,
[data-theme="light"] #sw-update-toast,
[data-theme="light"] #pwa-bar {
    background: rgba(255, 255, 255, 0.92);
    color: #1e3a8a;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

#xp-levelup-toast {
    border: 1px solid #a78bfa;
    top: calc(var(--nav-h, 60px) + 12px);
}

#sw-update-toast,
#pwa-bar {
    border: 1px solid #6366f1;
    bottom: 1.25rem;
}

@keyframes pwaSlideUp {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(16px);
    }

    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* ── BUTTON LOADING STATES ── */
.btn-loading-state {
    position: relative;
    pointer-events: none;
    cursor: default;
    color: transparent !important;
}

.btn-loading-state>* {
    opacity: 0;
    transition: opacity 0.15s;
}

.btn-loading-state::after {
    content: '';
    position: absolute;
    inset: 0;
    margin: auto;
    width: 1.15em;
    height: 1.15em;
    border-radius: 50%;
    border: 2.5px solid rgba(255, 255, 255, 0.35);
    border-top-color: #fff;
    animation: _btnSpin 0.65s linear infinite;
}

@keyframes _btnSpin {
    to {
        transform: rotate(360deg);
    }
}

/* ── EXPLORE CARD SYSTEM (Centralized) ── */
.explore-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

@media (max-width: 640px) {
    .explore-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}


/* Hide scrollbar for side nav (collapsed and expanded) */
@media (min-width: 1180px) {
    .desktop-side-nav .dsn-nav {
        overflow-y: auto;
        overflow-x: hidden;
        scrollbar-width: none !important;
        /* Firefox */
    }

    .desktop-side-nav .dsn-nav::-webkit-scrollbar {
        display: none !important;
        /* Chrome/Safari */
        width: 0 !important;
        background: transparent !important;
    }
}

@media (min-width: 1180px) {
    .desktop-side-nav.expanded {
        display: flex;
        flex-direction: column;
        height: 100vh;
    }

    .desktop-side-nav.expanded .dsn-brand {
        flex-shrink: 0;
    }

    .desktop-side-nav.expanded .dsn-nav {
        flex: 0 1 auto;
        min-height: 0;
        overflow-y: auto;
        scrollbar-width: thin;
        scrollbar-color: #e5e7eb #fff;
    }

    .desktop-side-nav.expanded .dsn-footer {
        flex-shrink: 0;
    }
}

/* ── GLOBAL SURFACE TOKENS (consumed by --sr-*, --conv-*, --ai-* systems) ── */
:root {
    --app-accent: #6366f1;
    --app-accent-soft: rgba(99, 102, 241, 0.1);
    --app-surface: #ffffff;
    --app-bg: #f8fafc;

    /* Unique to base.css (not in style.css) */
    --bg-header: rgba(247, 245, 242, 0.82);
    --bg-input: #f6f4f1;
    --bg-code: #eeebe6;
    --text-placeholder: #a19b95;
    --divider: rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.12);
    --brand-accent: var(--app-accent);
    --brand-accent-soft: var(--app-accent-soft);
    --search-radius: var(--radius-pill);
}



/* ── DARK ATMOSPHERE (Forced or Auto) ── */
[data-theme="dark"] {
    --app-bg: #111111;
    --app-surface: #171717;
    --app-accent: #6366f1;
    --app-accent-soft: rgba(99, 102, 241, 0.12);

    --bg-page: var(--app-bg);
    --bg-card: var(--app-surface);
    --bg-header: rgba(17, 17, 17, 0.82);
    --bg-input: #1a1a1a;
    --bg-code: #1f1f1f;
    --text-placeholder: #64748b;
    --divider: rgba(255, 255, 255, 0.04);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.18);
    --brand-accent: var(--app-accent);
    --brand-accent-soft: var(--app-accent-soft);
    --search-radius: var(--radius-pill);
}

/* ── SYSTEM THEME FALLBACK ── */
@media (prefers-color-scheme: dark) {
    html:not([data-theme="light"]):not([data-theme="dark"]) {
        --bg-page: #111111;
        --bg-card: #171717;
        --bg-secondary: #222222;
        --text-primary: #FCF6F5;
        --text-secondary: #B0B0B0;
        --text-muted: #808080;
        --border: #2C2C2C;
        --border-hover: #3C3C3C;

        --primary: #818cf8;
        --primary-glow: rgba(129, 140, 248, 0.18);
        --primary-soft: rgba(129, 140, 248, 0.1);

        --gold: #7F77DD;
        --gold-soft: rgba(127, 119, 221, 0.12);
        --brand-gradient: linear-gradient(135deg, #6366f1 0%, #818cf8 100%);
        --brand-accent: #6366f1;
        --brand-accent-soft: rgba(99, 102, 241, 0.1);
    }
}

/* Library Page Wrapper */
.library-container {
    background-color: var(--bg-page);
    min-height: 100vh;
}

/* ── GLOBAL TOAST ── */
.global-toast {
    position: fixed;
    bottom: calc(1.5rem + var(--safe-bottom, 0px));
    left: 50%;
    transform: translateX(-50%) translateY(16px);
    z-index: 10002;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem 0.75rem 0.875rem;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.4;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.22), 0 1.5px 0 rgba(255, 255, 255, 0.08) inset;
    max-width: calc(100vw - 2rem);
    width: max-content;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.28s cubic-bezier(0.16, 1, 0.3, 1), transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
    background: rgba(15, 23, 42, 0.88);
    color: #eff6ff;
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.global-toast::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
    background: #818cf8;
    box-shadow: 0 0 6px #818cf8;
}

.global-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}

.global-toast.toast-success { color: #f0fdf4; border-color: rgba(74, 222, 128, 0.25); }
.global-toast.toast-success::before { background: #4ade80; box-shadow: 0 0 6px #4ade80; }

.global-toast.toast-danger { color: #fff1f2; border-color: rgba(248, 113, 113, 0.25); }
.global-toast.toast-danger::before { background: #f87171; box-shadow: 0 0 6px #f87171; }

.global-toast.toast-warning { color: #fffbeb; border-color: rgba(251, 191, 36, 0.25); }
.global-toast.toast-warning::before { background: #fbbf24; box-shadow: 0 0 6px #fbbf24; }

@media (max-width: 767px) {
    .global-toast {
        bottom: calc(72px + var(--safe-bottom, 0px));
    }
}

[data-theme="light"] .global-toast {
    background: rgba(255, 255, 255, 0.92);
    color: #1e3a8a;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1), 0 1px 0 rgba(0, 0, 0, 0.04) inset;
    border-color: rgba(99, 102, 241, 0.2);
}

[data-theme="light"] .global-toast.toast-success { color: #166534; border-color: rgba(74, 222, 128, 0.3); }
[data-theme="light"] .global-toast.toast-danger  { color: #991b1b; border-color: rgba(248, 113, 113, 0.3); }
[data-theme="light"] .global-toast.toast-warning { color: #92400e; border-color: rgba(251, 191, 36, 0.3); }

@media (prefers-reduced-motion: reduce) {
    .global-toast { transition: opacity 0.15s ease; }
}

/* ── SHARE BUTTON (Shared across sp-card components) ── */
.sp-btn-share {
    background: var(--bg-secondary);
    border: 1px solid var(--bg-secondary);
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    /* var(--radius-sm) */
    padding: 0.4rem 0.55rem;
    cursor: pointer;
    transition: background 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94), color 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94), border-color 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
    margin-right: 0.5rem;
}

.sp-btn-share:hover {
    background: var(--bg-secondary);
    color: var(--primary);
    border-color: var(--primary);
}

.sp-btn-share i {
    font-size: 0.75rem;
}

/* The Grid Header (e.g., "All Resources" or "My Library") */
.library-header h1 {
    color: var(--text-primary);
}

/* NOTE: sp-card component styles are now defined in index.html with the sp- design system */



/* ════════════════════════════════════════════
       TOP NAV
       ════════════════════════════════════════════ */
.top-nav {
    position: sticky;
    top: 0;
    z-index: 200;
    height: var(--nav-h);
    padding-top: var(--safe-top, 0px);
    background: var(--nav-bg);
    backdrop-filter: blur(18px) saturate(180%);
    -webkit-backdrop-filter: blur(18px) saturate(180%);
    border-bottom: 1px solid var(--nav-border);
    box-shadow: var(--nav-shadow);
    transition: background 0.25s ease, box-shadow 0.25s ease;
}

.top-nav .container {
    height: 100%;
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 0 1.25rem;
}

.nav-content {
    display: flex;
    align-items: center;
    height: 100%;
    gap: 0.75rem;
}


/* ── LOGO ── */
.logo {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    text-decoration: none;
    flex-shrink: 0;
    margin-right: 0.25rem;
}

.auth-brand-icon {
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.nav-brand-img {
    width: 34px;
    height: 34px;
    object-fit: contain;
    display: block;
}

.auth-brand-name {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 900;
    letter-spacing: -0.04em;
    color: var(--text-primary);
    line-height: 1;
}

/* ── DESKTOP SEARCH ── */
.nav-search-wrap {
    flex: 1;
    max-width: 380px;
    min-width: 0;
    margin: 0 0.5rem;
    position: relative;
}

.search-form {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 0.875rem;
    color: var(--text-muted);
    font-size: 0.8rem;
    pointer-events: none;
    transition: color 0.2s;
    z-index: 1;
}

.search-input {
    width: 100%;
    padding: 0.55rem 0.875rem 0.55rem 2.25rem;
    background: var(--bg-secondary);
    border: 1.5px solid var(--border);
    color: var(--text-primary);
    border-radius: var(--search-radius);
    font-family: var(--font-body);
    font-size: 0.875rem;
    transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    outline: none;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-input:focus {
    background: var(--bg-card);
    /* Changes from grey to white/dark-grey on focus */
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.10);
}

.search-form:focus-within .search-icon {
    color: var(--primary);
}

/* ── DESKTOP NAV RIGHT ── */
.nav-right {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    flex: 1;
    justify-content: flex-end;
    flex-shrink: 0;
    min-width: 0;
}

.nav-right>* {
    flex-shrink: 0;
    box-sizing: border-box;
}

.nav-icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    color: var(--text-muted);
    text-decoration: none;
    background: transparent;
    border: none;
    border-radius: 10px;
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    padding: 0;
    /* transition removed; see later .nav-icon-btn for canonical value */
    cursor: pointer;
    margin: 0;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

/* ── NOTIFICATION BELL ── */
.notif-wrap {
    position: relative;
}

.notif-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    min-width: 16px;
    height: 16px;
    background: #ef4444;
    color: white;
    border-radius: 99px;
    font-size: .6rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 3px;
    border: 2px solid white;
    pointer-events: none;
    display: none;
}

.notif-badge.visible {
    display: flex;
}

.dsn-link-badge--review {
    margin-left: auto;
    font-size: 0.62rem;
    font-weight: 800;
    color: #fff;
    background: #ef4444;
    border-radius: 99px;
    padding: 0 6px;
    min-width: 18px;
    height: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

/* .profile-dropdown duplicate definition removed (see later block for correct positioning) */
/* Restored selector for notification header */
.notif-header {
    color: #111827;
    border-bottom: 1px solid #f3f4f6;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.notif-mark-read {
    font-size: .75rem;
    font-weight: 500;
    color: #6366f1;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.notif-mark-read:hover {
    text-decoration: underline;
}

.notif-list {
    max-height: 260px;
    overflow-y: auto;
}

.notif-item {
    display: flex;
    align-items: flex-start;
    gap: .75rem;
    padding: .75rem 1rem;
    border-bottom: 1px solid #f9fafb;
    text-decoration: none;
    color: inherit;
    transition: background .15s;
}

.notif-item:hover {
    background: #f9fafb;
}

.notif-item.unread {
    background: #eff6ff;
}

.notif-item.unread:hover {
    background: #dbeafe;
}

.notif-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .8rem;
    color: white;
}

.notif-icon.like {
    background: #ef4444;
}

.notif-icon.comment {
    background: #6366f1;
}

.notif-icon.follow {
    background: #10b981;
}

.notif-icon.post_approved {
    background: #10b981;
}

.notif-icon.post_rejected {
    background: #f59e0b;
}

.notif-icon.default {
    background: #9ca3af;
}

.notif-text {
    font-size: .8125rem;
    color: #374151;
    line-height: 1.45;
}

.notif-time {
    font-size: .7rem;
    color: #9ca3af;
    margin-top: .2rem;
}

.notif-empty {
    padding: 2rem 1rem;
    text-align: center;
    color: #9ca3af;
    font-size: .875rem;
}

[data-theme="dark"] .notif-dropdown {
    background: #1f2937;
    border-color: #374151;
}

[data-theme="dark"] .notif-header {
    color: #f9fafb;
    border-color: #374151;
}

[data-theme="dark"] .notif-item {
    border-color: #1f2937;
    color: #f9fafb;
}

[data-theme="dark"] .notif-item:hover {
    background: #374151;
}

[data-theme="dark"] .notif-item.unread {
    background: #1e3a5f;
}

[data-theme="dark"] .notif-item.unread:hover {
    background: #1e40af33;
}

[data-theme="dark"] .notif-badge {
    border-color: #1f2937;
}

.nav-icon-btn:hover {
    background: rgba(99, 102, 241, 0.08);
    color: var(--primary);
}

.nav-icon-btn {
    transition: background 0.15s ease, color 0.15s ease, transform 0.12s ease;
}

.nav-icon-btn:hover {
    transform: translateY(-1px);
}

.nav-icon-btn:active {
    transform: scale(0.92);
}

.top-nav .create-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.48rem 1rem;
    background: var(--btn-bg);
    color: var(--btn-text);
    border: 1px solid var(--btn-border);
    border-radius: 10px;
    font-family: var(--font-body);
    font-size: 0.845rem;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: opacity 0.18s, transform 0.18s, box-shadow 0.18s;
    white-space: nowrap;
    min-height: unset;
    width: auto;
    justify-content: center;
}

.top-nav .create-btn:hover {
    background: var(--btn-hover-bg);
}

.create-btn i {
    font-size: 0.8rem;
    color: inherit;
}

.nav-btn-login {
    display: inline-flex;
    align-items: center;
    padding: 0.48rem 0.875rem;
    background: transparent;
    border: 1.5px solid var(--border, #e5e7eb);
    border-radius: 10px;
    font-family: var(--font-body);
    font-size: 0.845rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    transition: border-color 0.18s ease, color 0.18s ease, background 0.18s ease;
    white-space: nowrap;
}

.nav-btn-login:hover {
    border-color: rgba(99, 102, 241, 0.45);
    color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

/* ── DARK MODE TOGGLE ── */
.dark-toggle {
    /* Inherit from nav-icon-btn when used together */
}

.dark-toggle:hover {
    border-color: rgba(99, 102, 241, 0.5);
    color: var(--primary);
}

/* Standalone dark-toggle (mobile sidebar, etc) */
.dark-toggle:not(.nav-icon-btn) {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.55rem 0.75rem;
    min-height: 42px;
    border: 1.5px solid rgba(99, 102, 241, 0.12);
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
    font-family: var(--font-body);
    transition: border-color 0.18s ease, color 0.18s ease;
    white-space: nowrap;
    background: transparent;
    flex-shrink: 0;
}

.dark-toggle:not(.nav-icon-btn):hover {
    border-color: rgba(99, 102, 241, 0.5);
    color: #6366f1;
}

/* ── PROFILE DROPDOWN ── */
.profile-menu {
    position: relative;
}

.profile-trigger {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    background: transparent;
    border: 2.5px solid transparent;
    border-radius: 50%;
    cursor: pointer;
    transition: border-color 0.18s ease, box-shadow 0.18s ease;
    width: 42px;
    height: 42px;
    min-width: 42px;
    min-height: 42px;
    overflow: hidden;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.profile-trigger:hover {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-soft);
}

.profile-trigger[aria-expanded="true"] {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.nav-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    display: block;
}

.profile-dropdown {
    display: none;
    position: absolute;
    bottom: calc(100% + 8px);
    left: 0;
    right: auto;
    min-width: 230px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-modal);
    overflow: hidden;
    z-index: 30000;
    animation: navDropIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    transform-origin: bottom left;
}

.profile-dropdown.open {
    display: block;
}

@keyframes navDropIn {
    from {
        opacity: 0;
        transform: scale(0.94) translateY(-6px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.dropdown-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1rem 0.875rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.dropdown-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary);
    flex-shrink: 0;
}

.dropdown-user-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.dropdown-name {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.dropdown-username {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 0.1rem;
}

.dropdown-divider {
    height: 1px;
    background: var(--border);
    margin: 3px 0;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.6rem 1rem;
    font-family: var(--font-body);
    font-size: 0.855rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: background 0.14s, color 0.14s;
    border: none;
    background: none;
    width: 100%;
    cursor: pointer;
    text-align: left;
}

.dropdown-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.dropdown-item i {
    width: 15px;
    font-size: 0.8rem;
    color: var(--text-muted);
    flex-shrink: 0;
    text-align: center;
    transition: color 0.14s;
}

.dropdown-item:hover i {
    color: var(--text-primary);
}

.dropdown-item--danger {
    color: var(--danger);
}

.dropdown-item--danger i {
    color: var(--danger);
}

.dropdown-item--danger:hover {
    background: rgba(239, 68, 68, 0.06);
    color: var(--danger);
}

.dropdown-item--danger:hover i {
    color: var(--danger);
}

/* ════════════════════════════════════════════
       MOBILE NAV RIGHT
       ════════════════════════════════════════════ */
.mobile-nav-right {
    display: none;
    align-items: center;
    gap: 0.5rem;
    margin-left: auto;
    flex-shrink: 0;
}

.dark-toggle-mobile {
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    color: #6b7280;
    background: #f3f4f6;
    border: 1.5px solid #e5e7eb;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
    flex-shrink: 0;
}

.dark-toggle-mobile:hover {
    background: rgba(99, 102, 241, 0.08);
    border-color: rgba(99, 102, 241, 0.3);
    color: var(--primary);
}

/* ── FLASH ── */
.flash-container {
    position: fixed;
    bottom: calc(1.5rem + var(--safe-bottom, 0px));
    left: 50%;
    transform: translateX(-50%);
    z-index: 10001;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    width: max-content;
    max-width: calc(100vw - 2rem);
    pointer-events: none;
}

@media (max-width: 767px) {
    .flash-container {
        bottom: calc(72px + var(--safe-bottom, 0px));
    }
}

.flash {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem 0.75rem 0.875rem;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.4;
    pointer-events: all;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.22), 0 1.5px 0 rgba(255, 255, 255, 0.08) inset;
    animation: flashIn 0.38s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    max-width: 420px;
    width: max-content;
}

.flash.flash-dismissing {
    animation: flashOut 0.25s cubic-bezier(0.4, 0, 1, 1) forwards;
}

@keyframes flashIn {
    from {
        opacity: 0;
        transform: translateY(14px) scale(0.96);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes flashOut {
    from {
        opacity: 1;
        transform: translateY(0) scale(1);
    }

    to {
        opacity: 0;
        transform: translateY(8px) scale(0.95);
    }
}

/* Icon dot on the left */
.flash::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.flash-success {
    background: rgba(15, 23, 42, 0.88);
    color: #f0fdf4;
    border: 1px solid rgba(74, 222, 128, 0.25);
}

.flash-success::before {
    background: #4ade80;
    box-shadow: 0 0 6px #4ade80;
}

.flash-danger {
    background: rgba(15, 23, 42, 0.88);
    color: #fff1f2;
    border: 1px solid rgba(248, 113, 113, 0.25);
}

.flash-danger::before {
    background: #f87171;
    box-shadow: 0 0 6px #f87171;
}

.flash-info {
    background: rgba(15, 23, 42, 0.88);
    color: #eff6ff;
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.flash-info::before {
    background: #818cf8;
    box-shadow: 0 0 6px #818cf8;
}

.flash-warning {
    background: rgba(15, 23, 42, 0.88);
    color: #fffbeb;
    border: 1px solid rgba(251, 191, 36, 0.25);
}

.flash-warning::before {
    background: #fbbf24;
    box-shadow: 0 0 6px #fbbf24;
}

.flash-close {
    background: rgba(255, 255, 255, 0.08);
    border: none;
    cursor: pointer;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.7rem;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background 0.15s, color 0.15s;
    margin-left: 0.25rem;
}

.flash-close:hover {
    background: rgba(255, 255, 255, 0.16);
    color: #fff;
}

.flash-container--inline {
    position: static;
    transform: none;
    pointer-events: auto;
    width: 100%;
    max-width: 100%;
    margin-bottom: 1rem;
}

.flash--inline {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    box-shadow: none;
    animation: none;
    max-width: 100%;
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 600;
}

.flash--inline.flash-success { background: rgba(16,185,129,.08); color: #059669; }
.flash--inline.flash-danger  { background: rgba(239,68,68,.08);  color: #ef4444; }
.flash--inline.flash-info    { background: rgba(37,99,235,.08);  color: #2563eb; }
.flash--inline.flash-warning { background: rgba(245,158,11,.08); color: #d97706; }

[data-theme="dark"] .flash--inline.flash-success { background: rgba(16,185,129,.12); color: #6ee7b7; }
[data-theme="dark"] .flash--inline.flash-danger  { background: rgba(239,68,68,.12);  color: #fca5a5; }
[data-theme="dark"] .flash--inline.flash-info    { background: rgba(59,130,246,.12); color: #93c5fd; }
[data-theme="dark"] .flash--inline.flash-warning { background: rgba(245,158,11,.12); color: #fde68a; }

/* Light mode — non-inline flash pills */
[data-theme="light"] .flash-success { background: rgba(255,255,255,.92); color: #166534; border-color: rgba(74,222,128,.3); }
[data-theme="light"] .flash-danger  { background: rgba(255,255,255,.92); color: #991b1b; border-color: rgba(248,113,113,.3); }
[data-theme="light"] .flash-info    { background: rgba(255,255,255,.92); color: #1e3a8a; border-color: rgba(99,102,241,.3); }
[data-theme="light"] .flash-warning { background: rgba(255,255,255,.92); color: #92400e; border-color: rgba(251,191,36,.3); }
[data-theme="light"] .flash-close        { background: rgba(0,0,0,.06); color: rgba(0,0,0,.45); }
[data-theme="light"] .flash-close:hover  { background: rgba(0,0,0,.12); color: var(--text-primary); }

@media (prefers-reduced-motion: reduce) {
    .flash, .flash.flash-dismissing { animation-duration: 0.01ms !important; }
}

body {
    font-family: var(--font-body);
    margin: 0;
    padding: 0;
    background-color: var(--bg-page);
    color: var(--text-primary);
    transition: background-color 0.3s ease;
    position: relative;
    min-height: 100vh;
}

/* ── BACKGROUND ATMOSPHERE ── */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 50% 0%, rgba(27, 154, 170, 0.12) 0%, transparent 70%),
        radial-gradient(ellipse 40% 40% at 80% 80%, rgba(15, 76, 117, 0.15) 0%, transparent 60%);
    pointer-events: none;
    z-index: -1;
}

body:not(.no-shared-grid)::after {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 48px 48px;
    pointer-events: none;
    z-index: -1;
}


.main-content,
#main-content {
    display: block;
    min-height: calc(100vh - var(--nav-h) - var(--safe-top, 0px));
    position: relative;
    z-index: 1;
    animation: motown-fade-in 0.15s ease;
}

@keyframes motown-fade-in {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: translateY(0); }
}


@media (max-width: 1023px) {

    .main-content,
    #main-content {
        margin-left: 0 !important;
    }
}

.app-shell {
    display: block;
}

#main-content {
    display: block;
}

.desktop-side-nav {
    display: none;
}

/* AI panel shell (overridden by ai-panel.css) */
.ai-panel-shell {
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    text-decoration: none;
}

.nav-logo img {
    width: 32px;
    height: 32px;
    object-fit: contain;
    display: block;
}

/* ── Wordmark logo badge — white pill behind it since the logo glyph itself
   is solid black and needs contrast against this app's dark theme ── */
.brand-logo-badge {
    display: inline-flex;
    align-items: center;
    border-radius: 8px;
    padding: 3px 8px;
    line-height: 0;
}

.brand-logo-img {
    width: 120px;
    height: auto;
    object-fit: contain;
    display: block;
}

@media (max-width: 600px) {
    .brand-logo-img {
        width: 100px;
    }
}

/* Dark mode logo swap */
html[data-theme="dark"] .brand-logo-img {
  content: url('../../images/new-logo-dark.png');
}

.nav-logo-name {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 400;
    letter-spacing: -0.04em;
    line-height: 1;
    color: var(--text-primary);
}

/* ── DSN styles needed on ALL screen sizes (mobile drawer uses these) ── */

.dsn-nav,
.dsn-actions {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    flex: 1;
    min-height: 0;
}

.dsn-section {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    margin-bottom: 0.35rem;
}

.dsn-label {
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    padding: 0.35rem 1rem 0.15rem;
}

.dsn-footer {
    padding: 0.75rem 0.5rem;
    border-top: 1px solid var(--border);
    margin-top: auto;
    flex-shrink: 0;
    position: relative;
    overflow: visible;
}

/* ── Upgrade button (animated, purple palette) ── */


.dsn-upgrade-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    width: calc(100% - 1rem);
    margin: 0 0.5rem 0.5rem;
    padding: 10px 14px;
    border-radius: 10px;
    background: var(--primary);
    color: #fff;
    font-size: 0.78rem;
    font-weight: 600;
    font-family: var(--font-body);
    text-decoration: none;
    letter-spacing: 0.01em;
    transition: opacity 0.15s;
    flex-shrink: 0;
    box-sizing: border-box;
    border: none;
    cursor: pointer;
}
.dsn-upgrade-btn:hover {
    opacity: 0.88;
    color: #fff;
}
.dsn-upgrade-btn:active {
    opacity: 0.75;
}
.dsn-upgrade-btn__label {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
}
.dsn-upgrade-btn__label .ti {
    font-size: 0.9rem;
    flex-shrink: 0;
}
.dsn-upgrade-btn__text {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Hide label in collapsed sidebar — show icon only */
.desktop-side-nav:not(.expanded) .dsn-upgrade-btn {
    width: 40px;
    height: 40px;
    padding: 8px;
    justify-content: center;
    margin: 0 auto 0.5rem;
    min-width: 0;
}
.desktop-side-nav:not(.expanded) .dsn-upgrade-btn__text {
    display: none !important;
}

/* Keep the bolt icon visible in the collapsed sidebar */
.desktop-side-nav:not(.expanded) .dsn-upgrade-btn__label {
    display: flex !important;
    align-items: center;
}
.desktop-side-nav:not(.expanded) .dsn-upgrade-btn__label .ti {
    display: inline-block !important;
    opacity: 1 !important;
    font-size: 1.1rem;
    line-height: 1;
}



.dsn-user {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background 0.2s;
    position: relative;
    width: 100%;
    border: none;
    background: transparent;
    text-align: left;
}

.dsn-user:hover {
    background: var(--bg-secondary);
}

.dsn-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    border: 2px solid var(--border);
}

.dsn-username {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.dsn-user-meta {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.dsn-brand {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 1;
    color: var(--text-primary);
}

.dsn-brand img {
    border-radius: 6px;
}



.dsn-user-info {
    flex: 1;
    min-width: 0;
}

.dsn-user-name {
    font-size: .85rem;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.dsn-user-handle {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.dsn-logout {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .45rem;
    width: 100%;
    padding: .5rem;
    border-radius: var(--radius-sm);
    background: transparent;
    border: 1px solid var(--border, #e2e8f0);
    color: var(--text-muted, #64748b);
    font-size: .8rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: background .15s, border-color .15s, color .15s;
}

.dsn-logout:hover {
    background: rgba(239, 68, 68, .1);
    border-color: rgba(239, 68, 68, .3);
    color: #ef4444;
}

/* Canonical base .dsn-login-btn style */
.dsn-login-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .45rem;
    width: 100%;
    padding: .5rem;
    border-radius: var(--radius-sm);
    background: var(--primary, #2563eb);
    border: none;
    color: #fff;
    font-size: .85rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: background .15s, color .15s, padding .15s;
}

@media (min-width: 1180px) {

    .dsn-collapse-btn {
        display: none;
    }

    .desktop-side-nav:hover .dsn-collapse-btn {
        display: flex;
    }

    .desktop-side-nav:not(.expanded) .dsn-collapse-btn {
        display: flex;
    }


    .dsn-collapse-btn i {
        font-size: 1rem;
    }


    .dsn-brand-row {
        display: flex;
        align-items: center;
        width: 100%;
        margin-bottom: .5rem;
        min-width: 0;
    }

    .dsn-brand-row .dsn-brand {
        flex: 1;
        min-width: 0;
        margin-bottom: 0;
    }

    /* Collapsed: hide the chevrons, show just bars icon */
    .desktop-side-nav:not(.expanded) .dsn-collapse-btn .ti-chevron-left {
        display: none;
    }

    /* Expanded: show chevrons pointing left, hide bars */
    .desktop-side-nav.expanded .dsn-collapse-btn .ti-chevron-left {
        display: inline-block;
    }

    /* Collapsed: flip chevrons to point right */
    .desktop-side-nav:not(.expanded) .dsn-collapse-btn {
        margin-left: 0;
    }

    /* Collapsed: chevron points right (→) */
    body:not(.nav-is-expanded) .dsn-collapse-btn .dsn-chevron-icon {
        transform: rotate(180deg);
    }

    /* Expanded: chevron points left (←) */
    body.nav-is-expanded .dsn-collapse-btn .dsn-chevron-icon {
        transform: rotate(0deg);
    }

    .dsn-collapse-btn .dsn-chevron-icon {
        transition: none;
    }

    .desktop-side-nav.is-toggling .dsn-collapse-btn .dsn-chevron-icon {
        transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .desktop-side-nav.expanded~.dsn-collapse-btn,
    body.nav-is-expanded .dsn-collapse-btn {
        left: 188px;
    }

    .app-shell.with-desktop-side-nav {
        display: block;
        max-width: none;
        padding: 0;
        margin: 0;
    }

    .app-shell.with-desktop-side-nav .main-content,
    .app-shell.with-desktop-side-nav #main-content {
        margin-left: var(--sidebar-w);
        min-height: 100vh;
        transition: margin-left 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    }

    /* Only shrink main content when the AI panel is actually open */
.app-shell.with-desktop-side-nav #main-content.with-ai-panel:has(~ .ai-panel-shell.ai-panel-open),
.app-shell.with-desktop-side-nav #main-content.with-ai-panel.ai-panel-is-open {
    margin-right: 280px;
    padding-right: 1.5rem;
}

.app-shell:not(.with-desktop-side-nav) #main-content.with-ai-panel:has(~ .ai-panel-shell.ai-panel-open),
.app-shell:not(.with-desktop-side-nav) #main-content.with-ai-panel.ai-panel-is-open {
    margin-right: 320px;
    padding-right: 1.5rem;
}

    .app-shell:not(.with-desktop-side-nav) .main-content,
    .app-shell:not(.with-desktop-side-nav) #main-content {
        margin-left: 0 !important;
    }

    .app-shell.with-desktop-side-nav .main-content.nav-expanded,
    .app-shell.with-desktop-side-nav #main-content.nav-expanded {
        padding-right: 1.5rem;
    }

    .app-shell.with-desktop-side-nav .main-content:not(.nav-expanded),
.app-shell.with-desktop-side-nav #main-content:not(.nav-expanded) {
    padding-right: 1.5rem;   /* match left padding */
    margin-left: 64px !important;
}


    .top-nav {
        display: none;
    }

    .desktop-side-nav {
        display: flex;
        flex-direction: column;
        position: fixed;
        left: 0;
        top: 0;
        width: 220px;
        height: 100vh;
        padding: 1rem 0.75rem;
        border: none;
        border-radius: 0;
        border-right: 1px solid var(--border);
        background: var(--bg-card);
        box-shadow: none;
        z-index: 100;
        overflow-y: auto;
        overflow-x: visible;
        overscroll-behavior: contain;
        transition: none;
    }

}

/* ── AI SIDEKICK PANEL (Global) ────────────────────────────────────────────── */

/* Tokens (extends Study Room --sr-* pattern) */
:root {
    --ai-blur: blur(24px);

    /* Accent colours (same in both themes) */
    --ai-blue: var(--primary,#4ecdc4);
    --ai-blue-bg: color-mix(in srgb, var(--primary,#4ecdc4) 10%, transparent);
    --ai-green: #10b981;
    --ai-gold: #7F77DD;
}

/* ── LIGHT MODE ── */
:root,
[data-theme="light"] {
    --ai-glass:       #ffffff;
    --ai-glass-heavy: #ffffff;
    --ai-border:      rgba(0, 0, 0, 0.08);
    --ai-border-hover:rgba(0, 0, 0, 0.16);

    --ai-bg:     #f8fafc;
    --ai-surface: #ffffff;
    --ai-hover:  #f1f5f9;
    --ai-ink:    #0f172a;
    --ai-muted:  #475569;
    --ai-light:  #64748b;
}

/* ── DARK MODE ── */
[data-theme="dark"] {
    --ai-glass:       rgba(15, 23, 42, 0.4);
    --ai-glass-heavy: rgba(15, 23, 42, 0.6);
    --ai-border:      rgba(255, 255, 255, 0.08);
    --ai-border-hover:rgba(255, 255, 255, 0.15);

    --ai-bg:     transparent;
    --ai-surface: var(--ai-glass);
    --ai-hover:  rgba(255, 255, 255, 0.05);
    --ai-ink:    #ffffff;
    --ai-muted:  #94a3b8;
    --ai-light:  #64748b;
}

/* ── PANEL SHELL ── */
.ai-panel-shell {
    /* Hidden on mobile, shown ≥1180px */
    display: none;
    flex-direction: column;
    position: fixed;
    right: 0;
    top: 0;
    width: 320px;
    height: 100vh;
    background: var(--ai-glass);
    backdrop-filter: var(--ai-blur) saturate(180%);
    -webkit-backdrop-filter: var(--ai-blur) saturate(180%);
    border-left: 1px solid var(--ai-border);
    z-index: 100;
    overflow: hidden;
    font-family: var(--font-body);
}

/* Show on desktop */
@media (min-width: 1180px) {
    .ai-panel-shell {
    }
}

/* ── HEADER ── */
.ai-panel__header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    border-bottom: 1px solid var(--ai-border);
    background: var(--ai-glass-heavy);
    flex-shrink: 0;
}

.ai-panel__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--ai-green);
    flex-shrink: 0;
    animation: ai-dot-pulse 2s ease-in-out infinite;
}

@keyframes ai-dot-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.ai-panel__title {
    flex: 1;
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--ai-ink);
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.ai-panel__close {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: transparent;
    color: var(--ai-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    transition: background 0.15s, color 0.15s;
}

.ai-panel__close:hover {
    background: var(--ai-hover);
    color: var(--ai-ink);
}

/* ── MESSAGES ── */
.ai-panel__body {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* Custom scrollbar */
.ai-panel__body::-webkit-scrollbar {
    width: 4px;
}
.ai-panel__body::-webkit-scrollbar-track {
    background: transparent;
}
.ai-panel__body::-webkit-scrollbar-thumb {
    background: var(--ai-border);
    border-radius: 2px;
}
.ai-panel__body::-webkit-scrollbar-thumb:hover {
    background: var(--ai-border-hover);
}

.ai-msg {
    display: flex;
    max-width: 100%;
}

.ai-msg--user {
    justify-content: flex-end;
}

.ai-msg--bot {
    justify-content: flex-start;
}

.ai-msg__bubble {
    max-width: 85%;
    padding: 0.75rem 1rem;
    border-radius: 18px;
    font-size: 0.84rem;
    line-height: 1.5;
    word-wrap: break-word;
    position: relative;
}

/* Bot message */
.ai-msg--bot .ai-msg__bubble {
    background: var(--ai-hover);
    border: 1px solid var(--ai-border);
    color: var(--ai-ink);
    border-bottom-left-radius: 6px;
}

/* User message */
.ai-msg--user .ai-msg__bubble {
    background: var(--ai-blue);
    color: white;
    border-bottom-right-radius: 6px;
}

/* Typing indicator */
.ai-msg__bubble--typing {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.85rem 1.1rem;
}

.ai-msg__bubble--typing span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--ai-muted);
    animation: ai-typing 1.4s infinite ease-in-out;
}

.ai-msg__bubble--typing span:nth-child(2) { animation-delay: 0.2s; }
.ai-msg__bubble--typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes ai-typing {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-4px); }
}

/* Suggested chips */
.ai-msg--suggested {
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0;
}

.ai-chip {
    background: transparent;
    border: 1px solid var(--ai-border);
    border-radius: var(--radius-lg);
    padding: 0.4rem 0.8rem;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--ai-blue);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
    white-space: nowrap;
}

.ai-chip:hover {
    background: var(--ai-blue-bg);
    border-color: var(--ai-blue);
}

/* ── INPUT ── */
.ai-panel__input-row {
    padding: 0.875rem 1rem;
    border-top: 1px solid var(--ai-border);
    background: var(--ai-glass-heavy);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.ai-panel__input {
    flex: 1;
    background: var(--ai-hover);
    border: 1px solid var(--ai-border);
    border-radius: 25px;
    padding: 0.6rem 1rem;
    font-size: 0.84rem;
    color: var(--ai-ink);
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.ai-panel__input:focus {
    border-color: var(--ai-blue);
    box-shadow: 0 0 0 3px var(--ai-blue-bg);
}

.ai-panel__input::placeholder {
    color: var(--ai-muted);
}

.ai-panel__send {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--ai-blue);
    border: none;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    transition: background 0.15s, transform 0.15s, opacity 0.15s;
    flex-shrink: 0;
}

.ai-panel__send:hover:not(:disabled) {
    background: #3bb7ad;
    transform: scale(1.05);
}

.ai-panel__send:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ── MOBILE MODAL (≤900px) ── */
@media (max-width: 900px) {
    .ai-panel-shell.ai-panel-mobile {
        position: fixed !important;
        top: 0;
        right: 0;
        bottom: 0;
        left: auto;
        width: 85vw;
        max-width: 360px;
        height: 100vh;
        border-radius: 0;
        border-left: 1px solid var(--border);
        box-shadow: -8px 0 32px rgba(0,0,0,0.4);
        transform: translateX(100%);
        transition: transform 0.3s cubic-bezier(0.4,0,0.2,1);
    }

    .ai-panel-shell.ai-panel-mobile--open {
        transform: translateX(0);
    }

    .ai-panel__input-row {
        position: sticky;
        bottom: 0;
        left: 0;
        right: 0;
        background: var(--ai-glass-heavy);
        border-top: 1px solid var(--ai-border);
        border-radius: 0;
        padding: 1rem;
        z-index: 10;
    }
}

/* FAB toggle button */
#aiToggleBtn {
    position: fixed;
    bottom: calc(60px + var(--safe-bottom) + 1rem);
    right: 1rem;
    z-index: 1001;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--ai-blue);
    border: none;
    color: white;
    font-size: 1.3rem;
    cursor: pointer;
    box-shadow: 0 8px 24px color-mix(in srgb, var(--primary,#4ecdc4) 30%, transparent);
    transition: transform 0.2s, box-shadow 0.2s;
}

#aiToggleBtn:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 32px color-mix(in srgb, var(--primary,#4ecdc4) 40%, transparent);
}

/* ── HIGH CONTRAST MODE OVERRIDE ── */
@media (prefers-contrast: high) {
    .ai-msg__bubble { border-width: 2px; }
    .ai-panel__input { border-width: 2px; }
}

@media (min-width: 1024px) {
    .desktop-side-nav.is-toggling {
        transition: width 0.35s cubic-bezier(0.16, 1, 0.3, 1),
            padding 0.35s cubic-bezier(0.16, 1, 0.3, 1),
            background 0.3s ease;
    }

    .desktop-side-nav:not(.expanded) {
        display: flex;
        flex-direction: column;
        height: 100vh;
        padding: 0.75rem 0 !important;
        align-items: center !important;
        gap: 0.15rem !important;
        width: 64px !important;
    }

    .desktop-side-nav.expanded {
        width: 230px !important;
    }

    .desktop-side-nav:not(.expanded) .dsn-nav {
        flex: 1 1 auto;
        min-height: 0;
    }

    .desktop-side-nav:not(.expanded) .dsn-footer {
        flex-shrink: 0;
        margin-top: auto;
        padding-top: 1rem;
    }

    .desktop-side-nav #sideNavProfileDropdown {
        position: fixed !important;
        width: 200px !important;
        transform: none !important;
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.25), 0 0 0 1px var(--border);
    }

    .desktop-side-nav:not(.expanded) .dsn-brand {
        display: none !important;
    }

    .app-shell.with-desktop-side-nav .main-content {
        transition: none;
    }

    .desktop-side-nav.is-toggling ~ * .main-content,
    .app-shell.with-desktop-side-nav.is-toggling .main-content {
        transition: margin-left 0.35s cubic-bezier(0.16, 1, 0.3, 1),
            padding-right 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .dsn-label,
    .dsn-nav span,
    .dsn-actions span,
    .dsn-link-text,
    .dsn-btn-text,
    .dsn-user-info,
    #sideNavProfileChevron,
    .dsn-brand span {
        transition: none;
        opacity: 1;
        transform: translateX(0);
        white-space: nowrap;
        display: inline-block;
    }

    .desktop-side-nav.is-toggling .dsn-label,
    .desktop-side-nav.is-toggling .dsn-nav span,
    .desktop-side-nav.is-toggling .dsn-actions span,
    .desktop-side-nav.is-toggling .dsn-link-text,
    .desktop-side-nav.is-toggling .dsn-btn-text,
    .desktop-side-nav.is-toggling .dsn-user-info,
    .desktop-side-nav.is-toggling #sideNavProfileChevron,
    .desktop-side-nav.is-toggling .dsn-brand span {
        transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1),
            transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
        .app-shell:not(.with-desktop-side-nav) #main-content {
            margin-left: 0 !important;
        }

        .app-shell.with-desktop-side-nav .main-content.nav-expanded,
        .app-shell.with-desktop-side-nav #main-content.nav-expanded {
            padding-right: 1.5rem;
        }

        .app-shell.with-desktop-side-nav .main-content:not(.nav-expanded),
        .app-shell.with-desktop-side-nav #main-content:not(.nav-expanded) {
            padding-right: 2.5rem;
            margin-left: 64px !important;
        }

        /* Hover no longer expands the nav width */

        .top-nav {
            display: none;
        }

        .desktop-side-nav {
            display: flex;
            flex-direction: column;
            position: fixed;
            left: 0;
            top: 0;
            width: 220px;
            height: 100vh;
            padding: 1rem 0.75rem;
            border: none;
            border-radius: 0;
            border-right: 1px solid var(--border);
            background: var(--bg-card);
            box-shadow: none;
            z-index: 100;
            overflow-y: auto;
            overflow-x: visible;
            overscroll-behavior: contain;
        }

        /* Ensure footer stays at bottom in BOTH collapsed and expanded */
        .desktop-side-nav:not(.expanded) {
            display: flex;
            flex-direction: column;
            height: 100vh;
        }

        .desktop-side-nav:not(.expanded) .dsn-nav {
            flex: 1 1 auto;
            min-height: 0;
        }

        .desktop-side-nav:not(.expanded) .dsn-footer {
            flex-shrink: 0;
            margin-top: auto;
        }

        /* Re-position above the button and allow overflow */
        .desktop-side-nav #sideNavProfileDropdown {
            position: fixed !important;
            width: 200px !important;
            transform: none !important;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.25), 0 0 0 1px var(--border);
        }

        .desktop-side-nav:not(.expanded) {
            padding: 0.5rem 0 !important;
            align-items: center !important;
        }

        .desktop-side-nav:not(.expanded) .dsn-brand {
            display: none !important;
        }

        /* Sidebar Recovery: Tighten gaps and Restore Icon Visibility in collapsed state */
        .desktop-side-nav:not(.expanded) {
            gap: 0.15rem !important;
            width: 64px !important;
        }

        .desktop-side-nav.expanded {
            width: 220px !important;
        }

        /* Smooth Transition for the Core Nav - only during manual toggle */
        .desktop-side-nav {
            transition: none;
        }

        .desktop-side-nav.is-toggling {
            transition: width 0.35s cubic-bezier(0.16, 1, 0.3, 1),
                padding 0.35s cubic-bezier(0.16, 1, 0.3, 1),
                background 0.3s ease;
        }

        .app-shell.with-desktop-side-nav .main-content {
            transition: none;
        }

        .desktop-side-nav.is-toggling~* .main-content,
        .app-shell.with-desktop-side-nav.is-toggling .main-content {
            transition: margin-left 0.35s cubic-bezier(0.16, 1, 0.3, 1),
                padding-right 0.35s cubic-bezier(0.16, 1, 0.3, 1);
        }

        /* Unified Smooth Labels/Spans - No more jumping */
        .dsn-label,
        .dsn-nav span,
        .dsn-actions span,
        .dsn-link-text,
        .dsn-btn-text,
        .dsn-user-info,
        #sideNavProfileChevron,
        .dsn-brand span {
            /* No transition by default — only animate during manual user toggle */
            transition: none;
            opacity: 1;
            transform: translateX(0);
            white-space: nowrap;
            display: inline-block;
        }

        /* Only animate labels when the user is actively toggling the sidebar */
        .desktop-side-nav.is-toggling .dsn-label,
        .desktop-side-nav.is-toggling .dsn-nav span,
        .desktop-side-nav.is-toggling .dsn-actions span,
        .desktop-side-nav.is-toggling .dsn-link-text,
        .desktop-side-nav.is-toggling .dsn-btn-text,
        .desktop-side-nav.is-toggling .dsn-user-info,
        .desktop-side-nav.is-toggling #sideNavProfileChevron,
        .desktop-side-nav.is-toggling .dsn-brand span {
            transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .desktop-side-nav:not(.expanded) .dsn-label,
        .desktop-side-nav:not(.expanded) .dsn-nav span,
        .desktop-side-nav:not(.expanded) .dsn-actions span,
        .desktop-side-nav:not(.expanded) .dsn-link-text,
        .desktop-side-nav:not(.expanded) .dsn-btn-text,
        .desktop-side-nav:not(.expanded) .dsn-user-info,
        .desktop-side-nav:not(.expanded) #sideNavProfileChevron,
        .desktop-side-nav:not(.expanded) .dsn-brand span,
        .desktop-side-nav:not(.expanded) .dsn-stat-row__label {
            opacity: 0 !important;
            transform: translateX(-10px) !important;
            pointer-events: none !important;
            width: 0 !important;
            overflow: hidden !important;
            margin: 0 !important;
        }

        .desktop-side-nav:not(.expanded) .dsn-stat-row {
            justify-content: center !important;
        }

        .desktop-side-nav:not(.expanded) .dsn-stat-row--warn {
            justify-content: center !important;
        }

        .desktop-side-nav:not(.expanded) .dsn-section {
            margin-bottom: 0 !important;
        }

        .desktop-side-nav:not(.expanded) .dsn-brand-row {
            justify-content: center !important;
            padding: 0.75rem 0 !important;
            margin-bottom: 1.25rem !important;
        }

        .desktop-side-nav:not(.expanded) .dsn-brand,
        .desktop-side-nav:not(.expanded) .dsn-label,
        .desktop-side-nav:not(.expanded) .dsn-user-info,
        .desktop-side-nav:not(.expanded) .dsn-profile-chevron {
            display: none !important;
        }

        .desktop-side-nav:not(.expanded) .dsn-collapse-btn {
            margin: 0 auto !important;
        }

        .desktop-side-nav:not(.expanded) .dsn-link,
        .desktop-side-nav:not(.expanded) .dsn-btn {
            width: 44px !important;
            height: 44px !important;
            padding: 0 !important;
            gap: 0 !important;
            justify-content: center !important;
            margin: 0 auto !important;
            border-radius: var(--radius-md) !important;
        }

        .desktop-side-nav:not(.expanded) .dsn-user {
            width: 44px !important;
            height: 44px !important;
            padding: 0 !important;
            margin: 0.5rem auto !important;
            justify-content: center !important;
        }

        .desktop-side-nav:not(.expanded) .dsn-avatar {
            width: 32px !important;
            height: 32px !important;
            object-fit: cover !important;
            border: 2px solid var(--border);
            margin: 0 !important;
            display: block !important;
        }

        .desktop-side-nav:not(.expanded) .dsn-user:hover .dsn-avatar {
            transform: scale(1.05);
            border-color: var(--primary);
        }
    }

    /* ── MOBILE NAV UPDATES ── */
    @media (max-width: 1023px) {
        .mobile-header {
            display: flex;
            position: sticky;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
            align-items: center;
            justify-content: space-between;
            padding: 0 1rem;
            z-index: 1003;
        }

        .mobile-hamburger {
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.2rem;
            cursor: pointer;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-md);
            transition: background 0.15s, transform 0.1s;
            -webkit-tap-highlight-color: transparent;
        }

        .mobile-hamburger:active {
            background: var(--bg-secondary);
            transform: scale(0.92);
        }

        .mobile-logo-link {
            display: flex;
            align-items: center;
            text-decoration: none;
            font-family: var(--font-display);
            font-weight: 400;
            font-size: 1.1rem;
            letter-spacing: -0.04em;
            color: var(--text-primary);
        }
        .mobile-logo-link .nav-logo-name {
            font-size: inherit;
        }



        /* Back-button + page-title pattern (secondary screens) */
        .mobile-header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            min-width: 0;
            overflow: hidden;
        }

        .mobile-back-btn {
            background: none;
            border: none;
            cursor: pointer;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-primary);
            border-radius: 50%;
            -webkit-tap-highlight-color: transparent;
            transition: background 0.15s, transform 0.1s;
            padding: 0;
            flex-shrink: 0;
        }

        .mobile-back-btn:active {
            background: var(--bg-hover, rgba(0,0,0,0.06));
            transform: scale(0.88);
        }

        .mobile-page-title {
            font-family: var(--font-display);
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            line-height: 1.2;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .mobile-logo-link {
            max-width: 60%;
        }

        .mobile-logo-link img {
            width: 100px;
            height: 32px;
            max-width: 100%;
            border-radius: 6px;
        }

        .app-shell.with-desktop-side-nav .main-content,
        .app-shell.with-desktop-side-nav #main-content,
        .main-content,
        #main-content {
            margin-left: 0 !important;
            transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        /* Subtle content push when drawer opens */
        body.mobile-nav-active .main-content,
        body.mobile-nav-active #main-content {
            pointer-events: none;
        }

        .desktop-side-nav.dsn-studley {
            display: flex !important;
            flex-direction: column;
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            height: 100dvh !important;
            width: min(240px, 50vw) !important;
            transform: translateX(-100%);
            transition: transform 0.32s cubic-bezier(0.16, 1, 0.3, 1);
            z-index: 5000;
            background: var(--bg-card) !important;
            border-right: none;
            box-shadow: 8px 0 48px rgba(0, 0, 0, 0.3);
            overflow-x: hidden;
            overflow-y: auto;
            overscroll-behavior: contain;
            -webkit-overflow-scrolling: touch;
            padding: 0.75rem 0.5rem 0 !important;
            padding-bottom: calc(1rem + var(--safe-bottom)) !important;
        }

        /* In mobile drawer mode, always show text labels */
        .desktop-side-nav .dsn-nav span,
        .desktop-side-nav .dsn-link-text,
        .desktop-side-nav .dsn-btn-text,
        .desktop-side-nav .dsn-user-info,
        .desktop-side-nav .dsn-label {
            display: block !important;
            opacity: 1 !important;
            width: auto !important;
            max-width: none !important;
            overflow: visible !important;
            transform: none !important;
            pointer-events: auto !important;
            margin: 0 !important;
        }

        .desktop-side-nav .dsn-nav {
            flex: 1 1 0;
            overflow-y: auto;
            overflow-x: hidden;
            min-height: 0;
            overscroll-behavior: contain;
        }

        .desktop-side-nav .dsn-footer {
            flex-shrink: 0;
            position: relative;
            padding-bottom: max(var(--safe-bottom, 0px), 12px);
        }

        .mobile-nav-active .desktop-side-nav,
        .desktop-side-nav.open {
            transform: translateX(0);
        }

        .side-nav-overlay.open {
            opacity: 1;
            pointer-events: all;
        }

        /* Close button — real 44px tap target (mobile only) */
        .desktop-side-nav .dsn-brand-row {
            display: flex;
        }

        .desktop-side-nav .dsn-collapse-btn {
            width: 44px !important;
            height: 44px !important;
            border-radius: var(--radius-md) !important;
            background: var(--bg-secondary) !important;
            border: none !important;
            box-shadow: none !important;
            -webkit-tap-highlight-color: transparent;
            transition: background 0.15s, transform 0.1s !important;
        }

        .desktop-side-nav .dsn-collapse-btn:active {
            transform: scale(0.9) !important;
        }

        .desktop-side-nav .dsn-link,
        .desktop-side-nav .dsn-btn {
            width: 100% !important;
            justify-content: flex-start !important;
            padding: 0.6rem 1rem !important;
            min-height: 44px;
            -webkit-tap-highlight-color: transparent;
        }

        .desktop-side-nav .dsn-link:active {
            background: var(--bg-secondary) !important;
            transform: scale(0.98);
        }

        /* Active link override for mobile drawer */
        .desktop-side-nav .dsn-link.active {
            background: color-mix(in srgb, var(--primary) 12%, transparent) !important;
            color: var(--primary) !important;
        }

        .desktop-side-nav .dsn-link.active i {
            color: var(--primary) !important;
        }

        html[data-theme="dark"] .desktop-side-nav .dsn-link.active {
            color: var(--text-primary) !important;
        }
        html[data-theme="dark"] .desktop-side-nav .dsn-link.active i {
            color: var(--text-primary) !important;
        }

        .dsn-footer-flat { display: block; }
        .dsn-footer-desktop { display: none; }

        .dsn-user-row {
            display: flex;
            align-items: center;
            gap: 0.625rem;
            padding: 0.5rem 0.75rem 0.375rem;
        }
        .dsn-user-row .dsn-profile-name {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-primary);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            flex: 1;
            min-width: 0;
        }
        .dsn-flat-link {
            display: flex;
            align-items: center;
            gap: 0.625rem;
            padding: 0.55rem 0.75rem;
            color: var(--text-secondary);
            text-decoration: none;
            border-radius: 0.5rem;
            font-size: 0.82rem;
            font-weight: 500;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: inherit;
            cursor: pointer;
            min-height: 40px;
            -webkit-tap-highlight-color: transparent;
            transition: background 120ms, color 120ms;
        }
        .dsn-flat-link:active {
            background: var(--bg-secondary);
        }
        .dsn-flat-link svg {
            flex-shrink: 0;
            color: var(--text-muted);
            width: 16px;
            height: 16px;
        }
        .dsn-flat-link--logout {
            color: var(--danger);
        }
        .dsn-flat-link--logout svg {
            color: var(--danger);
        }
    }

/* ── Study room mobile-only profile items: hidden on desktop by default ── */
.dsn-mobile-divider,
.dsn-mobile-theme-row,
.dsn-mobile-profile-link {
    display: none;
}
/* On mobile, show them */
@media (max-width: 1023px) {
    .dsn-studley .dsn-mobile-divider { display: block; }
    .dsn-studley .dsn-mobile-theme-row { display: flex; }
    .dsn-studley .dsn-mobile-profile-link { display: flex; }
    .dsn-studley .dsn-footer-desktop { display: none !important; }
}

/* Hidden on desktop, shown in mobile drawer */
.dsn-footer-flat {
    display: none;
}

/* Shown on desktop, hidden in mobile drawer */
.dsn-footer-desktop {
    display: block;
}

/* DESKTOP HEADER (hidden by default, shown >=1180px) */
.desktop-header {
    display: none;
}

@media (min-width: 1180px) {
    .desktop-header {
        display: flex;
    }
}

    @media (min-width: 1024px) {
        .mobile-header {
            display: none !important;
        }

        .app-shell:not(.with-desktop-side-nav) .desktop-side-nav {
            display: none !important;
        }
    }

    @media (min-width: 1180px) {

        .dsn-brand {
            display: flex;
            align-items: center;
            gap: .55rem;
            font-family: var(--font-display);
            font-size: 1.1rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            color: var(--text-primary, #1a202c);
            padding: .5rem .5rem;
            margin-bottom: .5rem;
            text-decoration: none;
            white-space: nowrap;
            overflow: hidden;
            min-width: 0;
        }

        .desktop-side-nav.expanded .dsn-brand {
            overflow: visible;
        }

        .desktop-side-nav.expanded .dsn-brand img {
            width: 135px;
            height: 40px !important;
            border-radius: 7px;
            flex-shrink: 0;
        }

        .dsn-brand span {
            opacity: 0;
            transition: none;
        }

        .desktop-side-nav.is-toggling .dsn-brand span {
            transition: opacity 0.25s ease;
        }


        .desktop-side-nav.expanded .dsn-brand span {
            opacity: 1;
            color: var(--text-primary);
            font-weight: 400;
        }

        /* Brand text only shows when expanded */

        .dsn-brand img {
            border-radius: 6px;
            width: 28px;
            height: 28px;
            object-fit: contain;
            flex-shrink: 0;
        }

        .top-nav .logo {
            display: flex;
        }

        .with-desktop-side-nav .top-nav .logo {
            display: none;
        }

        .dsn-brand img {
            border-radius: 6px;
        }

        .dsn-nav,
        .dsn-actions {
            display: flex;
            flex-direction: column;
            gap: .25rem;
        }

        .dsn-section {
            display: flex;
            flex-direction: column;
            gap: .25rem;
            margin-bottom: .5rem;
        }

        .dsn-label {
            font-size: 0.7rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--text-muted);
            padding: 0.75rem 0.75rem 0.25rem;
            opacity: 1;
        }

        .dsn-profile-item {
            display: flex;
            align-items: center;
            gap: 0.85rem;
            padding: 0.75rem 1.15rem;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            transition: background 0.2s ease, color 0.2s ease;
            background: transparent;
            border: none;
            width: 100%;
            cursor: pointer;
            text-align: left;
        }

        .dsn-profile-item:hover {
            background: var(--bg-secondary);
            color: var(--text-primary);
        }

        .dsn-profile-item i {
            width: 20px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .dsn-profile-item:hover i {
            color: var(--text-secondary);
        }

        .dsn-profile-item.logout {
            color: #ef4444;
            margin-top: 4px;
            border-top: 1px solid var(--border);
            padding-top: 0.85rem;
        }

        .dsn-profile-item.logout i {
            color: #ef4444;
        }

        .dsn-profile-item.logout:hover {
            background: rgba(239, 68, 68, 0.06);
            color: #dc2626;
        }

        /* Canonical .dsn-link.active style (merged) */
        .dsn-link.active {
            background: var(--primary-soft, rgba(99, 102, 241, 0.12));
            color: var(--brand-accent);
            font-weight: 500;
            position: relative;
        }
        .dsn-btn.primary {
            border: none;
            padding: 10px;
            background: #2563eb;
            color: #ffffff;
        }

        .dsn-btn.primary:hover {
            background: #1d4ed8;
            color: white;
        }

        .dsn-footer {
            padding: .5rem 0;
            border-top: 1px solid var(--border, #2e3244);
            margin-top: auto;
            display: flex;
            flex-direction: column;
            align-items: stretch;
            gap: .35rem;
        }



        .dsn-user-handle {
            font-size: 0.7rem;
            font-weight: 500;
            color: var(--text-muted, #64748b);
            line-height: 1.2;
        }

        .dsn-logout {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0;
            width: calc(100% - 0px);
            padding: .4rem 0;
            border-radius: var(--radius-sm);
            background: transparent;
            border: 1px solid transparent;
            color: var(--text-muted, #64748b);
            font-size: .75rem;
            font-weight: 600;
            text-decoration: none;
            cursor: pointer;
            transition: border-color .15s, padding .15s, background .15s, color .15s;
            white-space: nowrap;
            overflow: hidden;
        }

        .desktop-side-nav.expanded .dsn-logout {
            border-color: var(--border, #2e3244);
            padding: .4rem .5rem;
        }

        .dsn-logout-text,
        .dsn-login-text {
            display: inline-block;
            max-width: 0;
            opacity: 0;
            overflow: hidden;
            transition: none;
            margin-left: 0;
            pointer-events: none;
        }

        .desktop-side-nav.expanded .dsn-logout-text,
        .desktop-side-nav.expanded .dsn-login-text {
            max-width: 120px;
            opacity: 1;
            margin-left: .45rem;
            pointer-events: auto;
        }

        .dsn-login-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0;
            width: 100%;
            padding: .4rem 0;
            border-radius: var(--radius-sm);
            background: transparent;
            border: none;
            color: var(--primary, #2563eb);
            font-size: .75rem;
            font-weight: 600;
            text-decoration: none;
            cursor: pointer;
            transition: background .15s, color .15s, padding .15s;
            white-space: nowrap;
            overflow: hidden;
        }

        .desktop-side-nav.expanded .dsn-login-btn {
            background: var(--primary, #2563eb);
            color: #fff;
            padding: .7rem .5rem;
        }

        .dsn-signup-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: .45rem;
            width: 100%;
            padding: .65rem;
            border-radius: var(--radius-sm);
            background: var(--primary, #2563eb);
            border: none;
            color: #fff;
            font-size: .85rem;
            font-weight: 700;
            text-decoration: none;
            cursor: pointer;
            transition: background .15s;
            margin-bottom: .5rem;
        }

        .dsn-signup-btn:hover {
            background: var(--primary-dark, #1d4ed8);
        }

        /* Desktop override for .dsn-login-btn */
        .dsn-login-btn {
            background: transparent;
            border: 1px solid var(--border, #2e3244);
            color: var(--text-primary, #f1f5f9);
        }

        .dsn-login-btn:hover {
            background: var(--bg-hover, rgba(255, 255, 255, .06));
        }

        .header-signup-btn {
            padding: .4rem .9rem;
            border-radius: var(--radius-sm);
            background: transparent;
            border: 1px solid var(--border, #2e3244);
            color: var(--text-primary, #f1f5f9);
            font-size: .8rem;
            font-weight: 600;
            text-decoration: none;
            cursor: pointer;
            transition: background .15s;
        }

        .header-signup-btn:hover {
            background: var(--bg-hover, rgba(255, 255, 255, .06));
        }

        .header-login-btn {
            padding: .4rem .9rem;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--primary, #2563eb);
            border: none;
            color: #fff;
            font-size: .8rem;
            font-weight: 700;
            text-decoration: none;
            cursor: pointer;
            transition: background .15s;
        }

        .header-login-btn:hover {
            background: var(--primary-dark, #1d4ed8);
        }

        .dsn-logout:hover {
            background: rgba(239, 68, 68, .1);
            border-color: rgba(239, 68, 68, .3);
            color: #ef4444;
        }

        [data-theme="dark"] .dsn-link:hover,
        [data-theme="dark"] .dsn-btn:hover {
            color: var(--primary);
        }

        /* Desktop Header */
        .desktop-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: .75rem 1.5rem;
            border-bottom: 1px solid var(--border);
            background: var(--bg-card);
            position: sticky;
            top: 0;
            z-index: 100;
            margin-left: -1.5rem;
            margin-right: -1.5rem;
            margin-bottom: 1.5rem;
            border-radius: 0;
            width: calc(100% + 3rem);
        }

        .desktop-search-form {
            display: flex;
            align-items: center;
            gap: .5rem;
            background: var(--bg-input, #0f1117);
            border: 1px solid var(--border, #2e3244);
            border-radius: 10px;
            padding: .5rem 1rem;
            flex: 1;
            max-width: 400px;
        }

        .desktop-search-form i {
            color: var(--text-muted, #64748b);
        }

        .desktop-search-form input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-primary, #f1f5f9);
            width: 100%;
            font-size: .9rem;
        }

        .desktop-search-form input::placeholder {
            color: var(--text-muted, #64748b);
        }

        .desktop-header-actions {
            display: flex;
            align-items: center;
            gap: .5rem;
        }

        .header-icon-btn {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            color: var(--text-secondary, #94a3b8);
            background: transparent;
            border: 1px solid transparent;
            cursor: pointer;
            transition: background .15s, color .15s;
        }

        .header-icon-btn:hover {
            background: var(--bg-hover, rgba(255, 255, 255, .06));
            color: var(--text-primary, #f1f5f9);
        }

        .header-notif-wrap {
            position: relative;
        }

        .header-notif-badge {
            position: absolute;
            top: 6px;
            right: 6px;
            width: 8px;
            height: 8px;
            background: #ef4444;
            border-radius: 50%;
            display: none;
        }

        .header-profile-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            overflow: hidden;
            border: 2px solid var(--border, #2e3244);
        }

        .header-profile-btn img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
    }

    /* ── GLOBAL TAP TARGET IMPROVEMENTS ── */
    .post-row,
    .course-row,
    a[class*="-row"] {
        min-height: 44px;
    }

    /* ── ACTIVE STATE FEEDBACK ── */
    @media (hover: none) {

        .post-row:active,
        .course-row:active {
            background: var(--bg-hover, rgba(255, 255, 255, .06)) !important;
            transform: scale(0.99);
        }
    }

    /* main-content bottom padding for mobile when authenticated is handled in HTML, not CSS template logic */

    /* ── RESPONSIVE ── */
    @media (max-width: 768px) {
        .mobile-hidden {
            display: none !important;
        }

        .nav-search-wrap {
            display: none !important;
        }

        .mobile-nav-right {
            display: flex;
        }

        .dark-toggle .toggle-label {
            display: none;
        }

        .dark-toggle {
            padding: 0.38rem 0.55rem;
        }


    }

    @media (min-width: 769px) {
        .mobile-nav-right {
            display: none !important;
        }
    }

    @media (max-width: 360px) {
        .auth-brand-name {
            font-size: 1.2rem;
        }
    }

    /* ── MOBILE HAMBURGER ── */
    .hamburger-btn {
        width: 44px;
        height: 44px;
        min-width: 44px;
        min-height: 44px;
        display: none;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 6px;
        background: var(--bg-secondary, #f3f4f6);
        border: none;
        border-radius: var(--radius-md);
        cursor: pointer;
        transition: background 0.18s ease, box-shadow 0.18s ease, transform 0.12s ease;
        flex-shrink: 0;
        padding: 0;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    .hamburger-btn span {
        display: block;
        width: 18px;
        height: 2px;
        background: #6b7280;
        border-radius: 2px;
        transition: transform 0.25s ease, opacity 0.25s ease, background 0.25s ease;
        transform-origin: center;
    }

    .hamburger-btn.open span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger-btn.open span:nth-child(2) {
        opacity: 0;
        transform: scaleX(0);
    }

    .hamburger-btn.open span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hamburger-btn:hover {
        background: rgba(99, 102, 241, 0.05);
    }

    .hamburger-btn:hover span {
        background: #6366f1;
    }

    .hamburger-btn:active {
        transform: scale(0.95);
    }

    .hamburger-btn:focus-visible {
        outline: none;
        box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.16);
    }

    [data-theme="dark"] .hamburger-btn {}

    [data-theme="dark"] .hamburger-btn span {
        background: #9ca3af;
    }

    [data-theme="dark"] .hamburger-btn.open span,
    [data-theme="dark"] .hamburger-btn:hover span {
        background: #7dd3fc;
    }



    .quick-actions-overlay {
        position: fixed;
        inset: 0;
        z-index: 409;
        background: rgba(2, 6, 23, 0.52);
        backdrop-filter: blur(2px);
        -webkit-backdrop-filter: blur(2px);
        opacity: 0;
        pointer-events: none;
        transition: opacity .2s ease;
    }

    .quick-actions-sheet {
        display: block;
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 410;
        background: var(--bg-card);
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        border-top: 1px solid var(--border);
        padding: .75rem 1rem calc(1rem + var(--safe-bottom));
        transform: translateY(100%);
        transition: transform .24s cubic-bezier(0.22, 1, 0.36, 1);
    }

    body.qa-open .quick-actions-sheet {
        transform: translateY(0);
    }

    body:not(.qa-open) .quick-actions-sheet {
        pointer-events: none;
    }

    .quick-actions-sheet .sheet-handle {
        width: 42px;
        height: 4px;
        border-radius: 999px;
        background: #d1d5db;
        margin: 0 auto .8rem;
    }

    .quick-actions-sheet .sheet-title {
        text-align: center;
        margin-bottom: .7rem;
        font-size: .78rem;
        letter-spacing: .08em;
        text-transform: uppercase;
        font-weight: 700;
        color: #4f46e5;
    }

    .quick-actions-sheet .sheet-action {
        display: flex;
        align-items: center;
        gap: .68rem;
        margin-bottom: .42rem;
        padding: .82rem .88rem;
        border: 1px solid rgba(99, 102, 241, 0.12);
        border-radius: var(--radius-md);
        background: #f8fafc;
        text-decoration: none;
        color: #1f2937;
        font-weight: 600;
    }

    .quick-actions-sheet .sheet-action i {
        width: 18px;
        text-align: center;
        color: #4f46e5;
    }

    body.qa-open .quick-actions-overlay {
        opacity: 1;
        pointer-events: auto;
    }

    body.qa-open .quick-actions-sheet {
        display: block;
        transform: translateY(0);
    }

    [data-theme="dark"] .quick-actions-overlay {
        background: rgba(2, 6, 23, 0.64);
    }

    [data-theme="dark"] .quick-actions-sheet {
        background: #111827;
        border-top-color: rgba(99, 102, 241, 0.22);
    }

    [data-theme="dark"] .quick-actions-sheet .sheet-handle {
        background: #4b5563;
    }

    [data-theme="dark"] .quick-actions-sheet .sheet-title {
        color: #93c5fd;
    }

    [data-theme="dark"] .quick-actions-sheet .sheet-action {
        background: #1f2937;
        border-color: #374151;
        color: #e5e7eb;
    }

    [data-theme="dark"] .quick-actions-sheet .sheet-action i {
        color: #93c5fd;
    }

    .mobile-dark-row {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0.65rem 0.75rem;
        border-radius: 10px;
        cursor: pointer;
        transition: background 0.15s;
    }

    .mobile-dark-row:hover {
        background: #f3f4f6;
    }

    [data-theme="dark"] .mobile-dark-row:hover {
        background: #1f2937;
    }

    .mobile-dark-label {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        font-size: 0.9rem;
        font-weight: 600;
        color: #374151;
        font-family: var(--font-body);
    }

    .mobile-dark-label i {
        width: 20px;
        text-align: center;
        color: #9ca3af;
        font-size: 0.9rem;
    }

    [data-theme="dark"] .mobile-dark-label {
        color: #d1d5db;
    }

    .top-nav.scrolled {
        background: rgba(255, 255, 255, 0.95);
        box-shadow: 0 1px 0 rgba(99, 102, 241, 0.10), 0 6px 32px rgba(99, 102, 241, 0.09);
    }

    /* ── DARK MODE ── */
    [data-theme="dark"] .dark-toggle {
        border-color: rgb(185, 185, 185);
        color: rgb(185, 185, 185);
    }

    [data-theme="dark"] .dark-toggle:hover {
        border-color: rgba(255, 255, 255, 0.8);
    }

    [data-theme="dark"] .dark-toggle-mobile {
        background: rgba(0, 0, 0, 0.12);
        border-color: rgba(255, 255, 255, 0.8);
        color: rgba(255, 255, 255, 0.8);
    }

    [data-theme="dark"] .dark-toggle-mobile:hover {
        background: rgba(0, 0, 0, 0.12);
        border-color: #6366f1;
        color: #6366f1;
    }

    [data-theme="dark"] .top-nav {
        background: rgba(17, 24, 39, 0.92);
        border-bottom-color: rgba(99, 102, 241, 0.15);
    }

    [data-theme="dark"] .top-nav.scrolled {
        background: rgba(17, 24, 39, 0.98);
    }


    [data-theme="dark"] .nav-btn-login {
        color: #d1d5db;
        border-color: #374151;
    }

    [data-theme="dark"] .nav-btn-login:hover {
        color: #7dd3fc;
        border-color: #2563eb;
        background: rgba(37, 99, 235, 0.08);
    }

    [data-theme="dark"] .nav-icon-btn {
        color: #9ca3af;
    }

    [data-theme="dark"] .nav-icon-btn:hover {
        background: rgba(99, 102, 241, 0.15);
        color: #7dd3fc;
    }

    [data-theme="dark"] .search-input {
        background: #1f2937;
        color: #f9fafb;
        border-color: transparent;
    }

    [data-theme="dark"] .search-input:focus {
        background: #111827;
        border-color: rgba(37, 99, 235, 0.5);
    }

    [data-theme="dark"] .profile-dropdown {
        background: var(--bg-card);
        border-color: var(--border);
        box-shadow: var(--shadow-modal);
    }

    [data-theme="dark"] .dropdown-header {
        background: var(--bg-secondary);
        border-bottom-color: var(--border);
    }

    [data-theme="dark"] .dropdown-name {
        color: var(--text-primary);
    }

    [data-theme="dark"] .dropdown-username {
        color: var(--text-muted);
    }

    [data-theme="dark"] .dropdown-divider {
        background: var(--border);
    }

    [data-theme="dark"] .dropdown-item {
        color: var(--text-secondary);
    }

    [data-theme="dark"] .dropdown-item:hover {
        background: var(--bg-hover);
        color: var(--text-primary);
    }

    [data-theme="dark"] .dropdown-item i {
        color: var(--text-muted);
    }

    [data-theme="dark"] .dropdown-item:hover i {
        color: var(--text-primary);
    }

    /* Suggestion tabs & overlays */
    .ob-tabs {
        display: flex;
        gap: 0.35rem;
        margin-bottom: 1.25rem;
        background: var(--bg-secondary, #2e3244);
        border: 1px solid var(--border, #3e4254);
        padding: 0.35rem;
        border-radius: var(--radius-md);
    }

    .ob-tab {
        flex: 1;
        padding: 0.5rem 0.35rem;
        border: none;
        background: none;
        border-radius: var(--radius-sm);
        cursor: pointer;
        font-size: 0.7rem;
        font-weight: 600;
        color: var(--text-muted, #94a3b8);
        transition: color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
        font-family: var(--font-body);
    }

    .ob-tab:hover {
        color: var(--text-primary, #f1f5f9);
    }

    .ob-tab.active {
        background: linear-gradient(135deg, #3b82f6, #6366f1);
        color: white;
        box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
    }

    /* ── Global Empty States ── */
    .global-empty {
        padding: 3rem 0;
        text-align: center;
    }
    .global-empty-text {
        font-size: 0.95rem;
        color: #4fa8e8; /* Blue matching the image */
        margin: 0;
        font-weight: 500;
    }
    .global-empty-link {
        color: #4fa8e8;
        font-weight: 600;
        text-decoration: none;
        opacity: 0.8;
        margin-left: 0.25rem;
    }
    .global-empty-link:hover {
        text-decoration: underline;
        opacity: 1;
    }

    /* ── Base Overlay & Card ── */
    .ob-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.75);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        z-index: 9999;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 1rem;
        animation: obFadeIn 0.25s ease;
    }

    .ob-card {
        background: #171717;
        border-radius: 24px;
        padding: 2.5rem 2.25rem 2rem;
        max-width: 440px;
        width: 100%;
        box-shadow: 0 25px 60px rgba(0, 0, 0, 0.35), 0 12px 24px rgba(0, 0, 0, 0.2);
        border: 1px solid #2C2C2C;
        position: relative;
        animation: obSlideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    }

    @keyframes obFadeIn {
        from {
            opacity: 0;
        }

        to {
            opacity: 1;
        }
    }

    @keyframes obSlideUp {
        from {
            opacity: 0;
            transform: translateY(24px) scale(0.96);
        }

        to {
            opacity: 1;
            transform: translateY(0) scale(1);
        }
    }

    @keyframes obCardSlideUpPhone {
        from {
            transform: translateY(100%);
        }

        to {
            transform: translateY(0);
        }
    }

    .sug-list {
        max-height: 260px;
        overflow-y: auto;
        margin-bottom: 1rem;
    }

    /* ── Mobile Overrides for Suggestion Overlay ── */
    @media (max-width: 640px) {
        .ob-overlay {
            align-items: flex-end !important;
            padding: 0 !important;
        }

        .ob-card {
            max-width: 100% !important;
            max-height: 90vh;
            overflow-y: auto;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important;
            margin: 0;
            animation: obCardSlideUpPhone 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .sug-list {
            max-height: none !important;
            overflow-y: visible !important;
        }
    }

    .sug-list.hidden {
        display: none;
    }

    .sug-item {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        padding: 0.65rem 0;
        border-bottom: 1px solid var(--border-light, #2e3244);
    }

    .sug-item:last-child {
        border-bottom: none;
    }

    .sug-avatar {
        width: 42px;
        height: 42px;
        border-radius: 50%;
        object-fit: cover;
        flex-shrink: 0;
        border: 2px solid var(--border, #3e4254);
    }

    .sug-info {
        flex: 1;
        min-width: 0;
    }

    .sug-name {
        display: block;
        font-weight: 700;
        font-size: 0.9rem;
        color: var(--text-primary, #f1f5f9);
    }

    .sug-meta {
        display: block;
        font-size: 0.75rem;
        color: var(--text-muted, #94a3b8);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .sug-empty {
        text-align: center;
        color: var(--text-muted, #64748b);
        font-size: 0.875rem;
        padding: 1.5rem 0;
    }

    @media (max-width: 640px) {
        .db-container {
            padding: 12px 12px 80px;
            gap: 16px;
        }

        .db-up-next {
            padding: 20px 16px;
        }

        .db-card-title {
            font-size: 17px;
        }

        .db-card-footer {
            flex-direction: column;
            align-items: flex-start;
            gap: 12px;
        }

        .db-card-footer a,
        .db-card-footer button {
            width: 100%;
            justify-content: center;
        }
    }

    /* ── PAGE REVEAL ── */
    body {
        /* Rendering guard removed to prevent white-screen issues */
        opacity: 1 !important;
    }

    /* ham-bars hidden on desktop — chevron takes over */
    @media (min-width: 1181px) {
        .ham-bars {
            display: none !important;
        }
    }

    /* ════════════════════════════════════════════
   SUBJECT CONTEXT BREADCRUMB BAR
   ════════════════════════════════════════════ */
    .subject-crumb-bar {
        position: sticky;
        top: 0;
        z-index: 100;
        display: flex;
        align-items: center;
        height: 36px;
        padding: 0 1.25rem;
        background: var(--bg-secondary, #f8fafc);
        border-bottom: 1px solid var(--border, #e2e8f0);
        font-size: 0.74rem;
        font-family: var(--font-body);
        font-weight: 600;
        color: var(--text-muted, #64748b);
        min-width: 0;
        overflow: hidden;
    }

    .subject-crumb-inner {
        display: flex;
        align-items: center;
        gap: 0.45rem;
        min-width: 0;
        overflow: hidden;
        white-space: nowrap;
    }

    .subject-crumb-label {
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
        color: var(--text-muted, #94a3b8);
        flex-shrink: 0;
    }

    .subject-crumb-sep {
        font-size: 0.55rem;
        color: var(--text-muted, #cbd5e1);
        flex-shrink: 0;
    }

    .subject-crumb-link {
        color: var(--primary, #2563eb);
        text-decoration: none;
        font-weight: 700;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        min-width: 0;
        flex-shrink: 1;
        transition: color 0.15s;
    }

    .subject-crumb-link:hover {
        color: #1d4ed8;
        text-decoration: underline;
    }

    .subject-crumb-link--active {
        color: var(--text-primary, #1a202c);
        pointer-events: none;
    }

    [data-theme="dark"] .subject-crumb-bar {
        background: rgba(17, 24, 39, 0.85);
        border-bottom-color: rgba(99, 102, 241, 0.14);
    }

    [data-theme="dark"] .subject-crumb-link {
        color: #93c5fd;
    }

    [data-theme="dark"] .subject-crumb-link--active {
        color: #f9fafb;
    }

    @media (max-width: 1023px) {
        .subject-crumb-bar {
            padding-right: 1rem;
            padding-left: 1rem;
            height: 34px;
            top: 60px;
            /* sits below the mobile header */
        }
    }


    .side-nav-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(3px);
        -webkit-backdrop-filter: blur(3px);
        z-index: 1300;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
    }

    .side-nav-overlay.open {
        opacity: 1;
        pointer-events: all;
    }

    body.modal-open {
        overflow: hidden;
        -webkit-overflow-scrolling: auto;
    }

    body.modal-open,
    html.modal-open {
        overflow: hidden;
    }

    /* Modal z-index hierarchy:
           appearanceModal: 10000
           auth modal:       9999
           onboarding:       9998  ← enforced below
        */
    #onboardingModal,
    .ob-overlay {
        z-index: 9998 !important;
    }


    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(16px) scale(0.96);
        }

        to {
            opacity: 1;
            transform: translateY(0) scale(1);
        }
    }

/* -- Auth modal overlay -- */
#authModal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0, 0, 0, 0.55);
    align-items: center;
    justify-content: center;
    padding: 1rem;
    box-sizing: border-box;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}

@keyframes authModalIn {
    from { opacity: 0; transform: translateY(12px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* -- Modal card -- */
.auth-modal-container {
    position: relative;
    width: 100%;
    max-width: 400px;
    max-height: 92vh;
    overflow-y: auto;
    overflow-x: hidden;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 36px 28px 28px;
    box-sizing: border-box;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.28), 0 0 0 1px rgba(255,255,255,0.04);
    animation: authModalIn 0.22s cubic-bezier(0.16, 1, 0.3, 1) both;
    scrollbar-width: none;
}
.auth-modal-container::-webkit-scrollbar { display: none; }

/* -- Close button -- */
.auth-modal-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--bg-page);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.95rem;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.auth-modal-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border-hover);
}

/* -- Brand header -- */
.auth-modal-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    margin-bottom: 24px;
    text-align: center;
}
.auth-modal-logo-circle {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--bg-page);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 4px;
}
.auth-modal-logo-img {
    width: 140px;
    height: auto;
    object-fit: contain;
    margin-bottom: 4px;
}
html[data-theme="dark"] .auth-modal-logo-img {
    content: url('../../images/new-logo-dark.png');
}
html[data-theme="light"] .auth-modal-logo-img {
    content: url('../../images/new-logo.png');
}
.auth-modal-wordmark {
    font-family: var(--font-display);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted);
}
.auth-modal-tagline {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
    margin-top: 2px;
}

/* -- Google button -- */
.auth-google-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 10px 16px;
    border: 1px solid var(--border-hover);
    border-radius: 11px;
    background: var(--bg-hover);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s, border-color 0.15s;
    box-sizing: border-box;
}
.auth-google-btn:hover {
    background: var(--bg-card);
    border-color: var(--border-hover);
}

/* -- Email button (sign up choice view) -- */
.auth-email-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 11px;
    border: 1px solid var(--primary);
    background: var(--primary);
    color: #fff;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.15s;
    box-sizing: border-box;
}
.auth-email-btn:hover { opacity: 0.88; }

/* -- Submit button -- */
.auth-submit-btn {
    width: 100%;
    padding: 10px 16px;
    border-radius: 11px;
    border: 1px solid var(--primary);
    background: var(--primary);
    color: #fff;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.15s;
    box-sizing: border-box;
}
.auth-submit-btn:hover:not(:disabled) { opacity: 0.88; }
.auth-submit-btn:disabled { opacity: 0.45; cursor: not-allowed; }

/* -- Divider -- */
.auth-divider {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 14px 0;
}
.auth-divider-line {
    flex: 1;
    height: 1px;
    background: var(--border);
}
.auth-divider-text {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.07em;
}

/* -- Form fields -- */
.auth-form-fields {
    display: flex;
    flex-direction: column;
    gap: 9px;
}
.auth-field-wrap {
    position: relative;
    display: flex;
    align-items: center;
}
.auth-field-icon {
    position: absolute;
    left: 11px;
    font-size: 0.9rem;
    color: var(--text-muted);
    pointer-events: none;
    z-index: 1;
}
.auth-input {
    width: 100%;
    padding: 9px 38px 9px 34px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--bg-page);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.875rem;
    outline: none;
    box-sizing: border-box;
    transition: border-color 0.15s, box-shadow 0.15s;
    -webkit-appearance: none;
}
.auth-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}
.auth-input::placeholder { color: var(--text-muted); opacity: 0.7; }

/* -- Eye toggle -- */
.auth-eye-btn {
    position: absolute;
    right: 10px;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    padding: 4px;
    border-radius: 4px;
    transition: color 0.15s;
}
.auth-eye-btn:hover { color: var(--text-secondary); }

/* -- Forgot password -- */
.auth-forgot-wrapper {
    text-align: right;
    margin: -3px 0 2px;
}

/* -- Switch line -- */
.auth-switch-line {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 14px;
}
.auth-switch-btn {
    background: none;
    border: none;
    color: var(--primary);
    font-weight: 600;
    cursor: pointer;
    font-size: inherit;
    font-family: inherit;
    padding: 0;
    transition: opacity 0.15s;
}
.auth-switch-btn:hover { opacity: 0.8; }

/* -- Legal line -- */
.auth-legal {
    text-align: center;
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 16px;
    line-height: 1.5;
}

/* -- Auth links -- */
.auth-modal-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.8rem;
}
.auth-modal-link:hover { opacity: 0.8; }

/* -- Email form animation -- */
.auth-email-form {
    display: none;
    animation: authModalIn 0.2s cubic-bezier(0.16, 1, 0.3, 1) both;
}
.auth-email-form.show { display: block; }

/* -- Password strength bars -- */
.signup-strength-bars {
    display: flex;
    gap: 5px;
    padding: 0 2px;
}
.ssb-bar {
    flex: 1;
    height: 3px;
    border-radius: 99px;
    background: var(--border);
    transition: background 0.25s;
}
.ssb-bar.weak   { background: var(--danger); }
.ssb-bar.ok     { background: var(--warning); }
.ssb-bar.strong { background: var(--success); }

/* -- Password checklist -- */
.signup-checklist {
    display: flex;
    flex-direction: column;
    gap: 5px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    padding: 2px 0;
}
.signup-checklist-req {
    display: flex;
    align-items: center;
    gap: 6px;
}
.signup-match-msg {
    font-size: 0.75rem;
    min-height: 16px;
    text-align: left;
}

/* -- Error message -- */
.auth-modal-error {
    font-size: 0.8rem;
    color: var(--danger);
    min-height: 0;
    display: none;
    padding: 2px 0;
}
.auth-modal-error.visible { display: block; }

/* -- Mobile: still a centered modal, just narrower -- */
@media (max-width: 640px) {
    .auth-modal-container {
        max-width: 100%;
        border-radius: 18px;
        padding: 32px 20px 24px;
    }
}



    @keyframes slideUpModal {
        from {
            transform: translateY(100%);
        }

        to {
            transform: translateY(0);
        }
    }

    /* Tab-switch feel: fade content on HTMX navigation */
    #main-content {
    transition: opacity 0.15s ease;
}

@media (max-width: 1179px) {
    #main-content,
    .main-content {
        padding-top: 0;
    }
}


    /* opacity controlled via JS */

/* ── MOBILE DRAWER ── */
#mobileDrawer {
    width: min(260px, 75vw) !important;
}



/* Hide the header plus button in the mobile drawer (keep the empty‑state one) */
#mobileDrawer .dsn-folders__header .dsn-folders__add-btn {
    display: none;
}

/* ══════════════════════════════════════════════════
   Studley Design System — Sidebar Overrides
   ══════════════════════════════════════════════════ */
/* ── Reset all old DSN styles that could bleed into Studley ── */
.dsn-studley,
.dsn-studley * {
    font-family: inherit;
    letter-spacing: normal;
}
.dsn-studley {
    background: var(--bg-secondary) !important;
    border-right: 1px solid var(--border) !important;
    padding: 0 !important;
    overflow-x: visible;
    overflow-y: auto;
}
.dsn-studley,
.dsn-studley:not(.expanded),
.dsn-studley.expanded {
    transition: width 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}
.dsn-studley .dsn-brand {
    flex: none;
    padding: 0;
    overflow: visible;
    min-width: 0;
    transition: none;
}
.dsn-studley.expanded { width: 230px !important; }
.dsn-studley:not(.expanded) { width: 64px !important; }
.dsn-studley .dsn-inner {
    display: flex;
    flex-direction: column;
    height: 100%;
    width: 100%;
    overflow: visible;
}
.dsn-studley.expanded .dsn-inner { padding: 0.8rem 1rem; }
.dsn-studley:not(.expanded) .dsn-inner { padding: 0rem 0.25rem; }
.dsn-studley .dsn-header-row {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
    padding: 0;
    margin: 0 0 0.5rem 0;
    border: none;
    background: transparent;
}
.dsn-studley.expanded .dsn-header-row { justify-content: space-between; }
.dsn-studley:not(.expanded) .dsn-header-row {
    flex-direction: column;
    justify-content: center;
}
.dsn-studley .dsn-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    margin-left: 0.5rem;
    margin-bottom: 1.25rem;
    margin-top: 0px;
}
@media (min-width: 768px) {
    .dsn-studley .dsn-brand { margin-left: 0.75rem; margin-bottom: 1.5rem; }
}
.dsn-studley .dsn-logo-img {
    height: 1.75rem;
    width: auto;
    transition: height 150ms, margin 150ms;
    border-radius: 6px;
    flex-shrink: 0;
}
@media (min-width: 640px) {
    .dsn-studley .dsn-logo-img { height: 2rem; }
}
@media (min-width: 768px) {
    .dsn-studley .dsn-logo-img { height: 2.25rem; }
}
@media (min-width: 1024px) {
    .dsn-studley .dsn-logo-img { height: 2.5rem; }
}
@media (min-width: 1280px) {
    .dsn-studley .dsn-logo-img { height: 2.75rem; }
}
@media (min-width: 1536px) {
    .dsn-studley .dsn-logo-img { height: 3rem; }
}
.dsn-studley .dsn-brand-text {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--text-primary);
    white-space: nowrap;
    line-height: 1.5;
}
.dsn-studley:not(.expanded) .dsn-brand {
    justify-content: center;
    margin-left: 0;
    padding: 0.5rem 0;
}
.dsn-studley:not(.expanded) .dsn-brand-text { display: none; }
.dsn-studley:not(.expanded) .dsn-logo-img { margin: 0 auto; }
.dsn-studley.expanded .dsn-collapse-btn {
    position: absolute;
    right: -0.5rem;
    top: 18px;
}
.dsn-studley:not(.expanded) .dsn-collapse-btn {
    position: static;
    margin: 0 auto 0.75rem;
}
.dsn-studley .dsn-collapse-btn {
    z-index: 50;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    color: var(--text-muted);
    background: transparent !important;
    border: none;
    border-radius: 6px !important;
    cursor: pointer;
    padding: 0;
    margin-top: -20px;
    box-shadow: none !important;
}

.dsn-studley:not(.expanded) .dsn-collapse-btn {
    display: flex !important;
}

.dsn-studley:not(.expanded) .dsn-collapse-btn svg {
    transform: rotate(180deg);
}
.dsn-studley .dsn-nav {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    flex: 1;
    min-height: 0;
    padding: 0;
    margin: 0;
    overflow-y: auto;
}
.dsn-studley .dsn-link {
    display: flex;
    align-items: center;
    gap: 0;
    padding: 0.5rem 0.625rem;
    border-radius: 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    font-family: inherit;
    margin: 0;
    border: none;
    background: transparent;
    width: 100%;
    cursor: pointer;
    transition: background-color 300ms ease;
}
@media (min-width: 768px) {
    .dsn-studley.expanded .dsn-link { padding: 0. 1rem 0.875rem; font-size: 0.95rem; }
}
.dsn-studley.desktop-side-nav:not(.expanded) .dsn-link {
    justify-content: center;
    align-self: center;
    width: 2.75rem !important;
    height: 2.75rem !important;
    padding: 0.5rem !important;
    margin: 0 !important;
    border-radius: 0.75rem !important;
}
.dsn-studley .dsn-link:hover {
    background: var(--bg-hover) !important;
    color: var(--text-primary) !important;
}
.dsn-studley .dsn-link:hover svg,
.dsn-studley .dsn-link:hover i,
.dsn-studley .dsn-link:hover .dsn-nav-icon-wrap {
    color: var(--text-primary);
}
.dsn-studley .dsn-link.active {
    background: var(--bg-hover) !important;
    color: var(--text-primary) !important;
    font-weight: 700;
    position: relative;
}
.dsn-studley .dsn-link.active i,
.dsn-studley .dsn-link.active svg {
    color: var(--text-primary);
}
.dsn-studley .dsn-nav-icon-wrap {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 300ms ease-out;
    flex-shrink: 0;
}
.dsn-studley .dsn-nav-icon-wrap svg {
    width: 1rem;
    height: 1rem;
    color: var(--text-secondary);
}
@media (min-width: 768px) {
    .dsn-studley .dsn-nav-icon-wrap svg { width: 1.25rem; height: 1.25rem; }
}
.dsn-studley .dsn-link:hover .dsn-nav-icon-wrap {
    transform: scale(1.1) rotate(-3deg);
}
.dsn-studley .dsn-link-text {
    margin-left: 0.75rem;
    transition: transform 390ms ease;
    font-weight: 500;
}
.nav-beta {
    display: inline-block;
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    padding: 1px 5px;
    border-radius: 4px;
    background: var(--primary, #7c6cfa);
    color: #fff;
    vertical-align: super;
    line-height: 1.2;
    margin-left: 4px;
}
.dsn-studley .dsn-link:hover .dsn-link-text {
    transform: translateX(0.25rem);
}
.dsn-studley:not(.expanded) .dsn-link-text { display: none; }
.dsn-studley .dsn-back-home {
    display: flex;
    align-items: center;
    gap: 0;
    padding: 8px 10px;
    border-radius: 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    font-family: inherit;
    margin: 0;
    border: none;
    background: transparent;
    width: 100%;
    cursor: pointer;
    transition: background-color 300ms ease;
}
.dsn-studley .dsn-back-home svg {
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
}
.dsn-studley .dsn-back-home .dsn-link-text {
    margin-left: 0.75rem;
    transition: transform 300ms ease;
    font-weight: 500;
}
.dsn-studley .dsn-back-home:hover {
    background: var(--bg-hover) !important;
    color: var(--text-primary) !important;
}
.dsn-studley .dsn-back-home:hover svg {
    color: var(--text-primary);
}
.dsn-studley.desktop-side-nav:not(.expanded) .dsn-back-home {
    justify-content: center;
    align-self: center;
    width: 2.75rem !important;
    height: 2.75rem !important;
    padding: 0.5rem !important;
    margin: 0 !important;
    border-radius: 0.75rem !important;
}
.dsn-studley.desktop-side-nav:not(.expanded) .dsn-back-home svg {
    width: 1.25rem !important;
    height: 1.25rem !important;
}
.dsn-studley:not(.expanded) .dsn-link .dsn-nav-icon-wrap {
    width: 1.25rem !important;
    height: 1.25rem !important;
    flex: none !important;
    opacity: 1 !important;
    pointer-events: auto !important;
    overflow: visible !important;
    margin: 0 !important;
    transform: none !important;
}
.dsn-studley:not(.expanded) .dsn-link .dsn-nav-icon-wrap svg {
    width: 1.25rem !important;
    height: 1.25rem !important;
    display: block !important;
    visibility: visible !important;
}
.dsn-studley .dsn-footer {
    padding: 0;
    border-top: none;
    margin-top: auto;
    flex-shrink: 0;
    position: relative;
    overflow: visible;
}
.dsn-studley .dsn-profile-btn {
    display: flex;
    align-items: center;
    width: 100%;
    border-radius: 1rem;
    padding: 0.5rem 0.75rem;
    transition: border-color 200ms, background 200ms;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: inherit;
    font-family: inherit;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    gap: 0;
}
.dsn-studley .dsn-profile-btn:hover {
    border-color: var(--border-hover);
    background: var(--bg-hover);
}
.dsn-studley .dsn-avatar-wrap {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 9999px;
    background: var(--bg-secondary);
    flex-shrink: 0;
    overflow: hidden;
}
.dsn-studley .dsn-avatar-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.dsn-studley .dsn-avatar-fallback {
    color: var(--text-muted);
}
.dsn-studley .dsn-profile-name {
    flex: 1;
    min-width: 0;
    margin-left: 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.dsn-studley .dsn-profile-chevron {
    flex-shrink: 0;
    width: 1rem;
    height: 1rem;
    color: var(--text-muted);
    margin-left: 0.5rem;
    transition: transform 200ms;
}
.dsn-studley .dsn-profile-dropdown {
    display: none;
    flex-direction: column;
    position: fixed;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-modal);
    z-index: 99999;
    padding: 0.375rem;
    min-width: 200px;
    animation: studleyFadeIn 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes studleyFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}
.dsn-studley .dsn-profile-item {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.625rem 0.75rem;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    transition: background 150ms;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    font-family: inherit;
    cursor: pointer;
}
.dsn-studley .dsn-profile-item:hover {
    background: var(--bg-hover);
}
.dsn-studley .dsn-profile-item svg {
    flex-shrink: 0;
    color: var(--text-muted);
}
.dsn-studley .dsn-profile-item--logout {
    color: var(--danger);
}
.dsn-studley .dsn-profile-item--logout svg {
    color: var(--danger);
}
.dsn-studley .dsn-profile-divider {
    height: 1px;
    background: var(--border);
    margin: 0.25rem 0.375rem;
}
.dsn-studley .dsn-login-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.5rem 0.75rem;
    border-radius: 0.75rem;
    background: var(--btn-bg);
    border: none;
    color: var(--btn-text);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: background 150ms;
    font-family: inherit;
}
.dsn-studley .dsn-login-btn:hover {
    background: var(--btn-hover-bg);
}
.dsn-studley .dsn-login-btn svg {
    flex-shrink: 0;
    color: var(--btn-text);
}
.dsn-studley .dsn-bars-icon {
    display: none !important;
}
.dsn-studley .dsn-chevron-icon {
    display: inline-block !important;
}
.dsn-studley .dsn-profile-chevron {
    display: block !important;
}

.dsn-studley:not(.expanded) .dsn-profile-name { display: none; }
.dsn-studley:not(.expanded) .dsn-profile-chevron { display: none !important; }
.dsn-studley:not(.expanded) .dsn-chevron-icon { display: inline-block !important; }
.dsn-studley:not(.expanded) .dsn-profile-btn {
    justify-content: center;
    padding: 0.5rem;
    border: none;
    background: transparent;
}
.dsn-studley:not(.expanded) .dsn-profile-btn:hover {
    background: transparent;
    border: none;
}
.dsn-studley:not(.expanded) .dsn-login-btn span { display: none; }
.dsn-studley:not(.expanded) .dsn-login-btn {
    padding: 0.5rem;
    justify-content: center;
}
.dsn-studley:not(.expanded) .dsn-login-btn svg { margin: 0; }

/* Responsive widths (sidebar hidden <1180px via .desktop-side-nav, but set anyway) */
@media (max-width: 1179px) {
    .dsn-studley.expanded { width: 230px !important; }
    .dsn-studley:not(.expanded) { width: 64px !important; }
}

/* Main content margin for sidebar states (only when sidebar is visible) */
@media (min-width: 1180px) {
    .app-shell.with-desktop-side-nav:has(.dsn-studley.expanded) #main-content {
        margin-left: 220px !important;
        padding-right: 0px;
    }
    .app-shell.with-desktop-side-nav:has(.dsn-studley:not(.expanded)) #main-content {
        margin-left: 64px !important;
    }
}

/* ── STUDY ROOM: clamp the live shell so fixed panes cannot widen the page ── */
#main-content:has(#paneMain),
#main-content:has(.pane-main),
#main-content:has(.pane-ai) {
    display: block !important;
    margin: 0 !important;
    padding: 0 !important;
    min-height: 0 !important;
    height: 0 !important;
    width: 100vw !important;
    max-width: 100vw !important;
    overflow-x: clip !important;
    overflow-y: visible !important;
}

/* Study room overrides: the live pane-main layout must not inherit desktop margins */
.app-shell.with-desktop-side-nav:has(.dsn-studley) #main-content:has(#paneMain),
.app-shell.with-desktop-side-nav:has(.dsn-studley) #main-content:has(.pane-main),
.app-shell.with-desktop-side-nav:has(.dsn-studley) #main-content:has(.pane-ai) {
    margin-left: 0 !important;
    padding: 0 !important;
}

.study-room-shell,
html.study-room-shell,
body.study-room-shell,
.study-room-shell .app-shell,
.study-room-shell #main-content,
.study-room-shell .main-content {
    overflow-x: hidden !important;
}

.study-room-shell .app-shell,
.study-room-shell #main-content,
.study-room-shell .main-content {
    width: 100vw !important;
    max-width: 100vw !important;
}

.room-wrap,
.room-layout,
.pane-main,
.pane-ai {
    max-width: 100vw;
}

/* -- Profile dropdown inline theme toggle -- */
.dsn-theme-row {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 10px 6px;
}

.dsn-theme-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 32px;
    border-radius: 8px;
    border: 0.5px solid transparent;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: background 140ms ease, color 140ms ease, border-color 140ms ease;
}

.dsn-theme-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.dsn-theme-btn.active-theme {
    background: var(--bg-secondary);
    border-color: var(--border);
    color: var(--text-primary);
}

.dsn-theme-btn:active {
    transform: scale(0.95);
}

@media (prefers-reduced-motion: reduce) {
    .dsn-theme-btn { transition: none; }
    .dsn-theme-btn:active { transform: none; }
    .btn-loading-state::after { animation: none; }
}

/* ── Auth modal inline error ── */
.auth-modal-error {
    display: none;
    font-size: var(--text-small);
    font-weight: var(--weight-semibold);
    color: var(--danger);
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: center;
    line-height: 1.4;
}
.auth-modal-error.visible {
    display: block;
    animation: flashIn 0.28s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* ── GLOBAL APP ENTRY ANIMATION (triggered by onboarding_just_completed) ── */
@keyframes room-app-fade-in {
  0%   { opacity: 0; }
  100% { opacity: 1; }
}

/* ════════════════════════════════════════════════════════
   MOBILE NAV — Hamburger button + Left-side drawer
   Only active on screens ≤1023px (desktop uses dsn sidebar).
   ════════════════════════════════════════════════════════ */

    /* ── Right-side group (upgrade + hamburger) ── */
.mobile-header-right {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

/* ── Hamburger trigger in mobile-header ── */
.mnh-btn {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  border-radius: 10px;
  transition: background 0.14s;
  -webkit-tap-highlight-color: transparent;
  flex-shrink: 0;
}
.mnh-btn:hover { background: var(--bg-hover); }
.mnh-btn:active { background: var(--bg-secondary); transform: scale(0.92); }

/* ── Upgrade link in mobile header ── */
.mnh-upgrade-link {
  display: none;
  align-items: center;
  gap: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--primary);
  background: transparent;
  border: 1px solid var(--primary);
  border-radius: 8px;
  padding: 5px 10px;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
  flex-shrink: 0;
  line-height: 1;
}
.mnh-upgrade-link .ti { font-size: 0.8rem; }
.mnh-upgrade-link:hover { background: var(--primary); color: #fff; }

@media (max-width: 1023px) {
  .mnh-upgrade-link { display: flex; }
}

@media (max-width: 1023px) {
  .mnh-btn { display: flex; }
  html[data-is-authenticated="false"] .mnh-btn { display: none; }
}

/* ══════════════════════════════════════════════════════
   MOBILE SIDE DRAWER
   ══════════════════════════════════════════════════════ */
@media (max-width: 1023px) {

.mobile-drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 8, 0.55);
  z-index: 6000;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}
.mobile-drawer-overlay.open { display: block; }

.mobile-drawer {
  position: fixed;
  left: 0;
  top: 0;
  height: 100vh;
  height: 100dvh;
  width: min(240px, 80vw);
  z-index: 6001;
  background: var(--bg-card);
  border-right: 0.5px solid var(--border);
  transform: translateX(-100%);
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
  overflow-x: hidden;
  visibility: hidden;
  pointer-events: none;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  display: flex;
  flex-direction: column;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
.mobile-drawer::-webkit-scrollbar { display: none; }
.mobile-drawer.open {
  visibility: visible;
  pointer-events: auto;
  transform: translateX(0);
}
.mobile-drawer:not(.open) {
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), visibility 0s linear 0.2s;
}

/* Close button — top-right X, always visible inside the drawer */
.ms-close-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: background 0.15s, color 0.15s, transform 0.15s;
    -webkit-tap-highlight-color: transparent;
}
.ms-close-btn:hover {
    background: color-mix(in srgb, var(--primary) 9%, transparent);
    color: var(--text-primary);
    transform: scale(1.05);
}
.ms-close-btn:active {
    transform: scale(0.92);
}

/* Folder text sizing consistent with nav items */
.mobile-drawer .dsn-folder-name { font-size: 0.875rem; }

    /* Brand row — top of drawer, mirrors desktop .dsn-brand */
    .ms-brand-row {
        padding: 16px 16px 2px;
        flex-shrink: 0;
    }
    .ms-brand {
        display: flex;
        align-items: center;
        gap: 6px;
        text-decoration: none;
        font-family: var(--font-display);
        font-size: 1.1rem;
        font-weight: 800;
        color: var(--text-primary);
        letter-spacing: -0.02em;
    }
    .ms-brand-dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: var(--primary, #4ecdc4);
        flex-shrink: 0;
    }

    /* Nav links — matches admin .adm-nav-link style */
    .ms-nav {
        display: flex;
        flex-direction: column;
        gap: 0.1rem;
        padding: 10px 10px 2px;
        flex-shrink: 0;
    }
    .ms-nav__item {
        display: flex;
        align-items: center;
        gap: 0.6rem;
        padding: 0.5rem 0.65rem;
        border-radius: 9px;
        font-size: 0.875rem;
        font-weight: 600;
        font-family: var(--font-display);
        color: var(--text-muted);
        text-decoration: none;
        background: none;
        border: none;
        width: 100%;
        cursor: pointer;
        transition: background 0.15s, color 0.15s;
        -webkit-tap-highlight-color: transparent;
        position: relative;
    }
    .ms-nav__item svg {
        flex-shrink: 0;
        width: 18px;
        height: 18px;
        color: var(--text-muted);
        transition: color 0.15s;
    }
    .ms-nav__item:hover,
    .ms-nav__item:focus-visible {
        background: var(--brand-accent-soft);
        color: var(--brand-accent);
    }
    .ms-nav__item:hover svg { color: var(--brand-accent); }
    .ms-nav__item:active { background: var(--brand-accent-soft); }
    .ms-nav__item--active {
        background: var(--brand-accent-soft);
        color: var(--brand-accent);
        font-weight: 700;
    }
    .ms-nav__item--active svg { color: var(--brand-accent); }
    .ms-nav__item--active::before {
        content: '';
        position: absolute;
        left: 0; top: 18%; bottom: 18%;
        width: 3px;
        border-radius: 0 3px 3px 0;
        background: var(--brand-accent);
    }

    /* Divider */
    .ms-divider {
        height: 1px;
        background: var(--border);
        margin: 0.35rem 0.5rem;
        flex-shrink: 0;
    }

    /* Actions group — flows directly after nav */
    .ms-bottom {
        padding: 4px 10px 0;
        flex-shrink: 0;
        display: flex;
        flex-direction: column;
    }

    /* Logout zone — pinned to bottom, visually separate */
    .ms-logout-zone {
        margin-top: auto;
        padding: 0 10px var(--ms-x);
        flex-shrink: 0;
    }

    /* Dark mode toggle — matches admin .adm-drawer-dark-row */
    .ms-dark-toggle {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0.55rem 0.65rem;
        border-radius: 9px;
        cursor: pointer;
        transition: background 0.15s;
        -webkit-tap-highlight-color: transparent;
    }
    .ms-dark-toggle:hover { background: var(--bg-hover); }
    .ms-dark-toggle__label {
        display: flex;
        align-items: center;
        gap: 0.65rem;
        font-size: 0.875rem;
        font-weight: 600;
        font-family: var(--font-display);
        color: var(--text-secondary);
    }
    .ms-dark-toggle__label i {
        width: 16px;
        text-align: center;
        color: var(--text-muted);
    }
    .ms-dark-toggle__pill {
        font-size: 0.7rem;
        font-weight: 700;
        padding: 0.18rem 0.55rem;
        border-radius: 50px;
        background: var(--bg-secondary);
        border: 1.5px solid var(--border);
        color: var(--text-muted);
    }

    @media (prefers-reduced-motion: reduce) {
        .ms-close-btn { transition: none; }
        .ms-close-btn:hover,
        .ms-close-btn:active { transform: none; }
        .ms-nav__item { transition: none; }
        .ms-action { transition: none; }
        .ms-logout { transition: none; }
        .ms-dark-toggle { transition: none; }
    }

    .ms-action {
        display: flex;
        align-items: center;
        gap: 0.6rem;
        padding: 0.5rem 0.65rem;
        border-radius: 9px;
        font-size: 0.875rem;
        font-weight: 600;
        font-family: var(--font-display);
        color: var(--text-muted);
        text-decoration: none;
        background: none;
        border: none;
        width: 100%;
        cursor: pointer;
        text-align: left;
        transition: background 0.15s, color 0.15s;
        -webkit-tap-highlight-color: transparent;
    }
    .ms-action svg { flex-shrink: 0; width: 18px; height: 18px; color: var(--text-muted); transition: color 0.15s; }
    .ms-action:hover, .ms-action:focus-visible {
        background: var(--brand-accent-soft);
        color: var(--brand-accent);
    }
    .ms-action:hover svg { color: var(--brand-accent); }
    .ms-action:active { background: var(--brand-accent-soft); }
    .ms-action--primary { color: var(--brand-accent); font-weight: 700; }
    .ms-action--primary svg { color: var(--brand-accent); }
    .ms-action--primary:hover { background: var(--brand-accent-soft); }

    .ms-logout {
        display: flex;
        align-items: center;
        gap: 0.6rem;
        padding: 1rem 1rem;
        border-radius: 9px;
        font-size: 0.875rem;
        font-weight: 600;
        font-family: var(--font-display);
        color: var(--danger, #ef4444);
        background: none;
        border: none;
        width: 100%;
        cursor: pointer;
        text-align: left;
        transition: background 0.15s;
        -webkit-tap-highlight-color: transparent;
    }
    .ms-logout svg { flex-shrink: 0; width: 18px; height: 18px; color: var(--danger, #ef4444); }
    .ms-logout:hover { background: rgba(239,68,68,0.06); color: #ef4444; }
    .ms-logout:active { background: rgba(239,68,68,0.12); }

} /* end @media (max-width: 1023px) */

/* On desktop: drawer never shows — desktop uses the sidebar */
@media (min-width: 1024px) {
  .mobile-drawer, .mobile-drawer-overlay, .mnh-btn { display: none !important; }
}

/* ── PWA / SW update UI ── */
#sw-update-toast,
#pwa-bar {
  display: none;
  position: fixed;
  bottom: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  border: 1px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: 0.8rem 1.1rem;
  align-items: center;
  gap: 0.85rem;
  box-shadow: 0 8px 40px color-mix(in srgb, var(--primary) 35%, transparent);
  z-index: var(--z-toast);
  font-size: 0.8rem;
  color: var(--text-primary);
  max-width: calc(100vw - 2rem);
  animation: pwaSlideUp 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

#sw-update-toast { white-space: nowrap; }

#pwa-bar img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  flex-shrink: 0;
}

#pwa-bar span {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#sw-update-btn,
#pwa-install-btn {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 9px;
  padding: 0.4rem 0.9rem;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
}

#pwa-dismiss-btn,
#pwa-ios-dismiss-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  padding: 0 0.1rem;
  flex-shrink: 0;
}

#pwa-ios-bar {
  display: none;
  position: fixed;
  bottom: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  border: 1px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: 0.8rem 1.1rem;
  align-items: center;
  gap: 0.85rem;
  box-shadow: 0 8px 40px color-mix(in srgb, var(--primary) 35%, transparent);
  z-index: var(--z-toast);
  font-size: 0.8rem;
  color: var(--text-primary);
  max-width: calc(100vw - 2rem);
  animation: pwaSlideUp 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

#pwa-ios-bar img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  flex-shrink: 0;
}

.pwa-ios-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
}

.pwa-ios-text small {
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 3px;
}

.pwa-ios-text small svg {
  flex-shrink: 0;
}

/* ── Desktop sidebar user stats strip ── */
.dsn-stats-strip {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dsn-stat-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
}

.dsn-stat-row__icon {
  font-size: 0.85rem;
  flex-shrink: 0;
  line-height: 1;
  width: 16px;
  text-align: center;
}

.dsn-stat-row__label {
  line-height: 1.2;
}

.dsn-stat-row--warn {
  color: var(--warning);
}

.dsn-stat-row--warn .dsn-stat-row__icon {
  color: var(--warning);
}

@media (max-width: 1023px) {
  .dsn-stats-strip { display: none; }
}

/* ── Side nav solve resume card ── */
.dsn-solve-resume {
  padding: 0 0.25rem;
  margin: 0.5rem 0 0;
}

.dsn-solve-resume__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm, 10px);
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(124, 108, 250, 0.04) 100%);
  text-decoration: none;
  border: 1px solid var(--border);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.dsn-solve-resume__link:hover {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--primary), transparent 84%);
}

.dsn-solve-resume__icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(124, 108, 250, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--primary);
  flex-shrink: 0;
}

.dsn-solve-resume__body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  flex: 1;
}

.dsn-solve-resume__label {
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
}

.dsn-solve-resume__title {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dsn-solve-resume__tag {
  display: inline-block;
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 1px 7px;
  border-radius: 99px;
  border: 1px solid var(--primary);
  color: var(--primary);
  background: transparent;
  line-height: 1.4;
  margin-top: 3px;
  align-self: flex-start;
}

.dsn-solve-resume__progress-bar {
  height: 2px;
  background: rgba(255,255,255,0.08);
  border-radius: 99px;
  overflow: hidden;
  margin-top: 2px;
}

.dsn-solve-resume__progress-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 99px;
  transition: width 0.4s ease;
}

.dsn-solve-resume__arrow {
  flex-shrink: 0;
  color: var(--primary);
  opacity: 0.6;
  transition: opacity 0.15s, transform 0.15s;
}

.dsn-solve-resume__link:hover .dsn-solve-resume__arrow {
  opacity: 1;
  transform: translateX(2px);
}

@media (max-width: 1023px) {
  .dsn-solve-resume { display: none; }
}

/* collapsed state */
.desktop-side-nav:not(.expanded) .dsn-solve-resume {
  padding: 0;
  margin: 0.25rem auto 0;
}

.desktop-side-nav:not(.expanded) .dsn-solve-resume__link {
  padding: 8px;
  justify-content: center;
  width: 44px;
}

.desktop-side-nav:not(.expanded) .dsn-solve-resume__body,
.desktop-side-nav:not(.expanded) .dsn-solve-resume__arrow {
  display: none;
}

/* ── Credits bar ── */
.dsn-credits-bar {
  padding: 10px 12px;
  margin: 0 0.5rem 0.5rem;
}

@media (max-width: 1023px) {
  .dsn-credits-bar { display: none; }
}

/* ── Collapsed sidebar: show ring, hide bar content ── */
.desktop-side-nav:not(.expanded) .dsn-credits-bar {
  padding: 0;
  margin: 0 auto 0.5rem;
  display: flex;
  justify-content: center;
}
.desktop-side-nav:not(.expanded) .dsn-credits-bar__top,
.desktop-side-nav:not(.expanded) .dsn-credits-bar__track,
.desktop-side-nav:not(.expanded) .dsn-credits-bar__sub {
  display: none;
}
.desktop-side-nav:not(.expanded) .dsn-credits-ring {
  display: flex;
}

/* ── Credits ring ── */
.dsn-credits-ring {
  display: none;
  position: relative;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.dsn-credits-ring svg {
  width: 40px;
  height: 40px;
}
.dsn-credits-ring__bg {
  stroke: var(--border, rgba(255,255,255,0.1));
}
.dsn-credits-ring__arc {
  stroke: var(--primary);
  transition: stroke-dasharray 0.4s ease;
}
.dsn-credits-ring__val {
  position: absolute;
  font-size: 9.5px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  pointer-events: none;
}

.dsn-credits-bar__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.dsn-credits-bar__label {
  font-size: 11.5px;
  font-weight: 500;
  color: var(--text-primary);
}

.dsn-credits-bar__upgrade {
  font-size: 11.5px;
  font-weight: 500;
  color: var(--primary);
  text-decoration: none;
}

.dsn-credits-bar__upgrade:hover {
  opacity: 0.8;
}

.dsn-credits-bar__track {
  height: 2px;
  background: var(--border, rgba(255,255,255,0.08));
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 5px;
}

.dsn-credits-bar__fill {
  height: 100%;
  background: var(--primary);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.dsn-credits-bar__sub {
  font-size: 11px;
  color: var(--text-secondary);
}