/* ── BREAKPOINT STANDARD ──
   Mobile:  @media (max-width: 640px)
   Tablet:  @media (max-width: 768px)
   Desktop: @media (min-width: 1024px)  */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
}

@font-face { font-display: swap; font-family: 'Source Sans 3'; font-style: normal; font-weight: 400; src: url('/static/fonts/SourceSans3-Regular.woff2') format('woff2'); }
@font-face { font-display: swap; font-family: 'Source Sans 3'; font-style: normal; font-weight: 500; src: url('/static/fonts/SourceSans3-Medium.woff2') format('woff2'); }
@font-face { font-display: swap; font-family: 'Source Sans 3'; font-style: normal; font-weight: 600; src: url('/static/fonts/SourceSans3-Semibold.woff2') format('woff2'); }
@font-face { font-display: swap; font-family: 'Source Sans 3'; font-style: normal; font-weight: 700; src: url('/static/fonts/SourceSans3-Bold.woff2') format('woff2'); }
@font-face { font-display: swap; font-family: 'Source Sans 3'; font-style: normal; font-weight: 800; src: url('/static/fonts/SourceSans3-ExtraBold.woff2') format('woff2'); }

:root {
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Safe area (notch) */
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);

    /* Border Radius */
    --radius-sm:   8px;
    --radius-md:   12px;
    --radius-lg:   20px;
    --radius-pill: 9999px;

    /* Shadows */
    --shadow-card:        0 1px 2px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.06);
    --shadow-card-hover:  0 2px 4px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.10);
    --shadow-modal:       0 4px 8px rgba(0,0,0,0.06), 0 20px 40px rgba(0,0,0,0.14);
    --shadow-sm:          0 1px 3px rgba(0,0,0,0.06);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;

    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-toast: 500;

    /* Micro-interaction animation */
    --anim-ease-out: cubic-bezier(0.23, 1, 0.32, 1);
    --anim-dur-micro: 120ms;

    /* Fonts */
    --font-display: 'Space Grotesk', system-ui, sans-serif;
    --font-body: 'DM Sans', system-ui, sans-serif;

    /* Font Size (1.2 modular scale) */
    --text-caption: 0.75rem;
    --text-small:   0.875rem;
    --text-body:    1rem;
    --text-lead:    1.125rem;
    --text-h4:      1.25rem;
    --text-h3:      1.5rem;
    --text-h2:      1.875rem;
    --text-h1:      2.25rem;

    /* Legacy aliases */
    --text-xs:  var(--text-caption);
    --text-sm:  var(--text-small);
    --text-base: var(--text-body);
    --text-lg:  var(--text-lead);
    --text-xl:  var(--text-h4);
    --text-2xl: var(--text-h3);

    /* Font Weight */
    --weight-normal: 400;
    --weight-medium: 500;
    --weight-semibold: 600;
    --weight-bold:   700;
    --weight-extrabold: 800;

    /* Line Height */
    --leading-tight:   1.15;
    --leading-normal:  1.4;
    --leading-relaxed: 1.6;

    /* Feedback */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;

    /* Mastery tiers (flashcard/quiz progress) */
    --mastery-unfamiliar: #ef4444;
    --mastery-learning:   #f97316;
    --mastery-familiar:   #14b8a6;
    --mastery-mastered:   #22c55e;

    /* ── WARM LIGHT THEME ── */
    /* Backgrounds — warm off-white, never #fff */
    --bg-main:        #f8f6f3;
    --bg-page:        #f8f6f3;
    --bg-card:        #ffffff;
    --bg-secondary:   #f0ede8;
    --bg-hover:       rgba(0, 0, 0, 0.04);

    /* Text — warm near-black to warm gray */
    --text-primary:   #1c1917;
    --text-secondary: rgba(28,25,23,0.65);
    --text-muted:     rgba(28,25,23,0.35);

    /* Borders — warm subtle */
    --border:         rgba(0,0,0,0.08);
    --border-hover:   rgba(0,0,0,0.16);
    --border-light:   rgba(0, 0, 0, 0.05);
    --border-subtle:  rgba(0,0,0,0.06);
    --hard-border:    rgba(0,0,0,0.18);
    --glass-border:   rgba(255, 255, 255, 0.6);

    --orb-1: transparent;
    --orb-2: transparent;

    /* Primary accent — indigo */
    --primary: #5b4cdb;
    --primary-glow: rgba(91,76,219,0.10);
    --primary-soft: rgba(91,76,219,0.07);

    /* Navigation */
    --nav-bg:    rgba(248,246,243,0.85);
    --nav-border: rgba(0,0,0,0.08);
    --nav-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);

    /* Buttons — filled indigo, not ghost */
    --btn-bg: #5b4cdb;
    --btn-text: #ffffff;
    --btn-border: transparent;
    --btn-hover-bg: #4a3dc4;

    /* Motown brand tokens (light) */
    --accent:        var(--primary);
    --accent-dim:    color-mix(in srgb, var(--primary) 12%, transparent);
    --accent-border: color-mix(in srgb, var(--primary) 25%, transparent);
    --accent-glow:   color-mix(in srgb, var(--primary) 6%, transparent);

    /* Card tokens (light) */
    --card-bg:            var(--bg-card);
    --card-bg-hover:      #f3f1ee;
    --card-border:        var(--border);
    --card-border-hover:  var(--border-hover);
    --card-radius:        12px;
    --status-generated:   var(--primary);
    --status-pending:     rgba(0, 0, 0, 0.2);
    --progress-track:     rgba(0, 0, 0, 0.06);

    --gold: #7F77DD;
    --gold-soft: rgba(127, 119, 221, 0.12);
    --nav-h: 60px;
    --sidebar-w: 60px;
    --brand-gradient: none;
}

body {
    font-size: var(--text-body);
    line-height: var(--leading-relaxed);
    font-family: var(--font-body);
    background-color: var(--bg-page);
    color: var(--text-primary);
}
h1 { font-size: var(--text-h1); line-height: var(--leading-tight); letter-spacing: -0.02em; font-family: var(--font-display); font-weight: var(--weight-bold); }
h2 { font-size: var(--text-h2); line-height: var(--leading-tight); letter-spacing: -0.02em; font-family: var(--font-display); font-weight: var(--weight-bold); }
h3 { font-size: var(--text-h3); line-height: var(--leading-tight); letter-spacing: -0.02em; font-family: var(--font-display); font-weight: var(--weight-bold); }
h4 { font-size: var(--text-h4); line-height: var(--leading-tight); letter-spacing: -0.01em; font-weight: var(--weight-semibold); }
h5 { font-size: var(--text-lead); line-height: var(--leading-tight); letter-spacing: -0.01em; font-weight: var(--weight-semibold); }
h6 { font-size: var(--text-body); line-height: var(--leading-tight); letter-spacing: -0.01em; font-weight: var(--weight-semibold); }
p { line-height: var(--leading-relaxed); }

.ti {
    stroke-width: 1.5;
    font-size: 1.35rem;
    line-height: 1;
    vertical-align: middle;
    flex-shrink: 0;
}

[data-theme="dark"] {
    /* Background surfaces */
    --bg-main:        #0d0d0d;
    --bg-page:        #0d0d0d;
    --bg-card:        #161616;
    --bg-secondary:   #141414;
    --bg-hover:       rgba(255, 255, 255, 0.04);

    /* Text */
    --text-primary:   #f0ede8;
    --text-secondary: rgba(240,237,232,0.55);
    --text-muted:     rgba(240,237,232,0.32);

    /* Borders */
    --border:         rgba(255, 255, 255, 0.07);
    --border-hover:   rgba(255, 255, 255, 0.14);
    --border-light:   rgba(255, 255, 255, 0.08);
    --border-subtle:  rgba(255,255,255,0.07);
    --hard-border:    rgba(255,255,255,0.15);
    --glass-border:   rgba(255, 255, 255, 0.08);

    /* Orbs */
    --orb-1: transparent;
    --orb-2: transparent;

    /* Primary */
    --primary:       #7c6cfa;
    --primary-glow:  rgba(124,108,250,0.15);
    --primary-soft:  rgba(124,108,250,0.08);

    /* Motown brand tokens */
    --accent:        var(--primary);
    --accent-dim:    color-mix(in srgb, var(--primary) 12%, transparent);
    --accent-border: color-mix(in srgb, var(--primary) 30%, transparent);
    --accent-glow:   color-mix(in srgb, var(--primary) 8%, transparent);
    --card-bg:            #161616;
    --card-bg-hover:      #1e1e1e;
    --card-border:        rgba(255, 255, 255, 0.06);
    --card-border-hover:  rgba(255, 255, 255, 0.18);
    --card-radius:        12px;
    --status-generated:   var(--primary);
    --status-pending:     rgba(255, 255, 255, 0.25);
    --progress-track:     rgba(255, 255, 255, 0.08);

    /* Navigation */
    --nav-bg:    rgba(13,13,13,0.82);
    --nav-border: rgba(255, 255, 255, 0.07);
    --nav-shadow: 0 1px 3px rgba(0, 0, 0, 0.30);

    /* Button / Hover tokens (dark theme) */
    --btn-bg: #7c6cfa;
    --btn-text: #ffffff;
    --btn-border: transparent;
    --btn-hover-bg: #6a5ae8;

    /* Gold */
    --gold:          #7F77DD;
    --gold-soft:     rgba(127, 119, 221, 0.12);

    /* Misc */
    --brand-gradient: none;
    --nav-h: 60px;

    /* Shadows (darker, more diffuse) */
    --shadow-card:        0 1px 2px rgba(0,0,0,0.20), 0 4px 12px rgba(0,0,0,0.30);
    --shadow-card-hover:  0 2px 4px rgba(0,0,0,0.20), 0 8px 24px rgba(0,0,0,0.40);
    --shadow-modal:       0 4px 8px rgba(0,0,0,0.30), 0 20px 40px rgba(0,0,0,0.55);
    --shadow-sm:          0 1px 3px rgba(0,0,0,0.06);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;

    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-toast: 500;
}

body.nav-is-expanded {
    --sidebar-w: 220px;
}

@media (prefers-color-scheme: dark) {
    html:not([data-theme="light"]):not([data-theme="dark"]) {
        --bg-main:        #0d0d0d;
        --bg-page:        #0d0d0d;
        --bg-card:        #161616;
        --bg-secondary:   #141414;
        --bg-hover:       rgba(255, 255, 255, 0.04);
        --text-primary:   #f0ede8;
        --text-secondary: rgba(240,237,232,0.55);
        --text-muted:     rgba(240,237,232,0.32);
        --border:         rgba(255, 255, 255, 0.07);
        --border-hover:   rgba(255, 255, 255, 0.14);
        --border-light:   rgba(255, 255, 255, 0.08);
        --border-subtle:  rgba(255,255,255,0.07);
        --hard-border:    rgba(255,255,255,0.15);
        --glass-border:   rgba(255, 255, 255, 0.08);
        --orb-1: transparent;
        --orb-2: transparent;
        --primary:       #7c6cfa;
        --primary-glow:  rgba(124,108,250,0.15);
        --primary-soft:  rgba(124,108,250,0.08);
        --nav-bg:    rgba(13,13,13,0.82);
        --nav-border: rgba(255, 255, 255, 0.07);
        --nav-shadow: 0 1px 3px rgba(0, 0, 0, 0.30);
        --btn-bg: #7c6cfa;
        --btn-text: #ffffff;
        --btn-border: transparent;
        --btn-hover-bg: #6a5ae8;
        --gold:          #7F77DD;
        --gold-soft:     rgba(127, 119, 221, 0.12);
        --brand-gradient: none;

        /* Motown brand tokens */
        --accent:        var(--primary);
        --accent-dim:    color-mix(in srgb, var(--primary) 12%, transparent);
        --accent-border: color-mix(in srgb, var(--primary) 30%, transparent);
        --accent-glow:   color-mix(in srgb, var(--primary) 8%, transparent);
        --card-bg:            #161616;
        --card-bg-hover:      #1e1e1e;
        --card-border:        rgba(255, 255, 255, 0.06);
        --card-border-hover:  rgba(255, 255, 255, 0.18);
        --card-radius:        12px;
        --status-generated:   var(--primary);
        --status-pending:     rgba(255, 255, 255, 0.25);
        --progress-track:     rgba(255, 255, 255, 0.08);
    }
}

/* === PREMIUM EMPTY STATE CARDS === */
.panel-empty-card {
    background: linear-gradient(135deg, #f8fafc 0%, #eef2ff 100%);
    border-radius: 18px;
    border: 1.5px solid var(--border, #e5e7eb);
    box-shadow: var(--shadow-md);
    padding: 2.5rem 1.5rem;
    text-align: center;
    margin: 2.5rem auto;
    max-width: 480px;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: box-shadow 0.22s, border-color 0.22s, background 0.22s;
}
.panel-empty-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: #6366f1;
    background: linear-gradient(135deg, #f1f5f9 0%, #e0e7ff 100%);
}
.panel-empty-icon {
    font-size: 3.5rem;
    color: var(--primary);
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}
.panel-empty-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.panel-empty-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}
.panel-empty-desc {
    color: #64748b;
    font-size: 1rem;
    margin-bottom: 1.2rem;
    max-width: 340px;
}
@media (max-width: 600px) {
    .panel-empty-card {
        padding: 1.5rem 0.7rem;
        max-width: 98vw;
    }
    .panel-empty-title {
        font-size: 1.08rem;
    }
    .panel-empty-desc {
        font-size: 0.97rem;
    }
}
[data-theme="dark"] .panel-empty-card {
    background: linear-gradient(135deg, #181f2e 0%, #232946 100%);
    border-color: #334155;
    box-shadow: 0 8px 32px rgba(99,102,241,0.13), 0 2px 8px rgba(37,99,235,0.09);
}
[data-theme="dark"] .panel-empty-title {
    color: #f1f5f9;
}
[data-theme="dark"] .panel-empty-desc {
    color: #94a3b8;
}
/* === IMPROVED BUNDLE CARD HOVER & RESPONSIVENESS === */
.bundle-card {
    transition: box-shadow 0.22s ease, transform 0.22s ease;
}
.bundle-card:hover, .bundle-card:focus-visible {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
    z-index: 2;
}
@media (max-width: 600px) {
    .bundle-card {
        width: 100%;
        min-width: 0;
        max-width: 100%;
        margin: 0 0 1.1rem 0;
    }
    .bundle-thumb {
        height: 80px !important;
        min-height: 80px !important;
    }
    .bundle-title {
        font-size: 0.98rem !important;
    }
    .bundle-meta {
        font-size: 0.75rem !important;
    }
    .bundle-info {
        padding: 0.5rem 0.7rem 0.6rem 0.7rem !important;
    }
}
/* === BUNDLE CARD === */
.bundle-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    width: 100%;
    transition: box-shadow 0.22s ease, transform 0.22s ease, border-color 0.22s ease;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    margin: 0;
    position: relative;
}
.bundle-card:hover {
    box-shadow: var(--shadow-card-hover);
    border-color: rgba(37,99,235,0.25);
    transform: translateY(-4px);
}
.bundle-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(37,99,235,0.04) 0%, rgba(99,102,241,0.04) 100%);
    opacity: 0;
    transition: opacity 0.22s ease;
    pointer-events: none;
}
.bundle-card:hover::after {
    opacity: 1;
}
.bundle-thumb img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}
.bundle-card:hover .bundle-thumb img {
    transform: scale(1.04);
}
.bundle-info {
    padding: .85rem 1rem .9rem;
    display: flex;
    flex-direction: column;
    gap: 0.28rem;
}
.bundle-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary, #111827);
    margin-bottom: 0;
    line-height: 1.35;
    -webkit-text-fill-color: unset;
    background: none;
    transition: color 0.18s ease;
}
.bundle-card:hover .bundle-title {
    color: #2563eb;
}
.bundle-meta {
    font-size: 0.8rem;
    color: var(--text-muted, #64748b);
    font-weight: 500;
}
/* ========================================
    EDUSHARE - Modern Educational Platform
    Mobile-First Design System
    ======================================== */

    /* === MODALS === */
    .content-modal { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.8); z-index: 1000; align-items: center; justify-content: center; padding: 1rem; }
    .content-modal.active { display: flex; }
    .content-modal-content { background: var(--bg-card, #1a1d27); border-radius: var(--radius-lg); max-width: 420px; width: 100%; padding: 1.5rem; position: relative; box-shadow: 0 20px 60px rgba(0,0,0,0.4); animation: modalSlideIn .25s ease; }
    @keyframes modalSlideIn { 
      from { opacity: 0; transform: scale(0.95) translateY(10px); } 
      to { opacity: 1; transform: scale(1) translateY(0); } 
    }
    .cm-close { position: absolute; top: 1rem; right: 1rem; background: none; border: none; font-size: 1.5rem; color: var(--text-muted, #64748b); cursor: pointer; width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; border-radius: var(--radius-sm); transition: background .2s, color .2s; }
    .cm-close:hover { background: var(--bg-secondary, #2e3244); color: var(--text-primary, #f1f5f9); }
    .cm-header { text-align: center; margin-bottom: 1.25rem; }
    .cm-icon { width: 64px; height: 64px; border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center; margin: 0 auto 1rem; font-size: 1.75rem; color: white; box-shadow: 0 8px 24px rgba(0,0,0,0.2); }
    .cm-icon-quiz { background: linear-gradient(135deg, #8b5cf6, #6366f1); box-shadow: 0 8px 24px rgba(139,92,246,0.35); }
    .cm-icon-doc { background: linear-gradient(135deg, #10b981, #059669); box-shadow: 0 8px 24px rgba(16,185,129,0.35); }
    .cm-title { font-family: var(--font-display); font-size: 1.1rem; font-weight: 800; color: var(--text-primary, #f1f5f9); margin: 0 0 .5rem; line-height: 1.3; }
    .cm-body { margin-bottom: 1.5rem; }
    .cm-desc { font-size: .85rem; color: var(--text-muted, #94a3b8); line-height: 1.6; margin: 0 0 .5rem; }
    .cm-meta { font-size: .75rem; color: var(--text-muted, #64748b); }
    .cm-meta span { margin-right: 1rem; }
    .cm-actions { display: flex; flex-direction: column; gap: .75rem; }
    .cm-btn { display: flex; align-items: center; justify-content: center; gap: .5rem; padding: .875rem 1.25rem; border-radius: var(--radius-md); font-size: .9rem; font-weight: 700; text-decoration: none; transition: background .2s, transform .2s, box-shadow .2s, border-color .2s, color .2s; }
    .cm-btn-primary { background: var(--btn-bg); color: var(--btn-text); border: 1px solid var(--btn-border); box-shadow: var(--shadow-sm); }
    .cm-btn-primary:hover { background: var(--btn-hover-bg); transform: translateY(-2px); box-shadow: var(--shadow-md); }
    .cm-btn-secondary { background: var(--bg-secondary, #2e3244); color: var(--text-primary, #f1f5f9); border: 1px solid var(--border, #3e4254); }
    .cm-btn-secondary:hover { border-color: #8b5cf6; color: #8b5cf6; }

    /* === AUTH MODAL === */
    .auth-modal-overlay {
        display: none;
        position: fixed;
        inset: 0;
        z-index: 9999;
        background: rgba(0, 0, 0, 0.75);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        align-items: center;
        justify-content: center;
        padding: 1rem;
    }
    .auth-modal-overlay.show { display: flex; }
    .auth-modal-card {
        background: #1e1f2e;
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: var(--radius-lg);
        width: 100%;
        max-width: 340px;
        padding: 1.75rem;
        position: relative;
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
        font-family: var(--font-body);
        text-align: center;
    }
    .auth-modal-close {
        position: absolute;
        top: 0.75rem;
        right: 0.75rem;
        background: none;
        border: none;
        font-size: 1rem;
        color: #64748b;
        cursor: pointer;
        width: 24px;
        height: 24px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 4px;
    }
    .auth-modal-header-box {
        background: #252836;
        padding: 1rem;
        margin: -1.75rem -1.75rem 1rem -1.75rem;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    }
    .auth-header-text {
        font-size: 0.8rem;
        color: #94a3b8;
        text-align: center;
    }
    .auth-choice-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 0.6rem;
        width: 100%;
        padding: 0.9rem;
        border: 1px solid var(--btn-border);
        border-radius: var(--radius-md);
        text-decoration: none;
        color: var(--btn-text);
        font-weight: 600;
        font-size: 0.9rem;
        transition: border-color 0.2s, background 0.2s, transform 0.2s;
        background: var(--btn-bg);
        cursor: pointer;
    }
    .auth-choice-btn:hover {
        border-color: var(--btn-border);
        background: var(--btn-hover-bg);
        transform: translateY(-1px);
    }
    .auth-divider {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        margin: 0.75rem 0;
    }
    .auth-divider-line {
        flex: 1;
        height: 1px;
        background: #3e4254;
    }
    .auth-divider-text {
        font-size: 0.7rem;
        color: #64748b;
        font-weight: 600;
    }
    .auth-email-form {
        display: none;
        animation: fadeInUp 0.25s ease;
    }
    .auth-email-form.show { display: block; }
    .auth-input-group {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }
    .auth-input {
        width: 100%;
        padding: 0.65rem 0.85rem;
        border: 1.5px solid #3e4254;
        border-radius: var(--radius-sm);
        font-size: 0.85rem;
        outline: none;
        background: #282a3e;
        color: #f1f5f9;
        transition: border-color 0.2s;
    }
    .auth-input:focus { border-color: #3b82f6; }
    .auth-submit-btn {
        width: 100%;
        padding: 0.7rem;
        background: #2563eb;
        color: #fff;
        border: none;
        border-radius: 10px;
        font-weight: 700;
        font-size: 0.85rem;
        cursor: pointer;
        transition: background 0.2s;
    }
    .auth-submit-btn:hover { background: #1d4ed8; }
    .auth-footer-text {
        margin-top: 0.75rem;
        font-size: 0.7rem;
        color: #64748b;
    }
    .auth-link {
        background: none;
        border: none;
        color: #3b82f6;
        font-weight: 700;
        cursor: pointer;
    }
    @keyframes fadeInUp {
        from { opacity: 0; transform: translateY(16px) scale(0.96); }
        to { opacity: 1; transform: translateY(0) scale(1); }
    }

    /* === VIDEO PLAYER === */
    .video-container {
        position: relative;
        width: 100%;
        padding-top: 56.25%; /* 16:9 Aspect Ratio */
        background: #000;
        border-radius: var(--radius-lg);
        overflow: hidden;
        margin-bottom: var(--spacing-md);
    }
    .video-container iframe {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        border: 0;
    }



/* Restore browser-default list indentation stripped by the * reset above.
   Scoped to content areas only — nav/toolbar lists keep padding: 0. */
.nv-math-wrap ol,
.nv-math-wrap ul,
.nv-paragraph ol,
.nv-paragraph ul,
.nv-block ol,
.nv-block ul,
.nv-doc-desc ol,
.nv-doc-desc ul,
.cs-step-content ol,
.cs-step-content ul,
.cs-entry-content ol,
.cs-entry-content ul {
    padding-left: 1.4em;
    margin: 0.35em 0 0.35em 0;
}

.nv-math-wrap ol,
.nv-paragraph ol,
.nv-block ol,
.nv-doc-desc ol,
.cs-step-content ol,
.cs-entry-content ol {
    list-style-type: decimal;
}

.nv-math-wrap ul,
.nv-paragraph ul,
.nv-block ul,
.nv-doc-desc ul,
.cs-step-content ul,
.cs-entry-content ul {
    list-style-type: disc;
}

.nv-math-wrap li,
.nv-paragraph li,
.nv-block li,
.nv-doc-desc li,
.cs-step-content li,
.cs-entry-content li {
    margin-bottom: 0.18em;
    line-height: 1.6;
}

    html {
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

    body {
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
        background: var(--bg-page);
        color: var(--text-primary);
        line-height: 1.6;
        min-height: 100vh;
        padding-bottom: 0px;
    }

    /* === TYPOGRAPHY === */
    h1, h2, h3, h4, h5, h6 {
        font-weight: 700;
        line-height: 1.2;
        color: var(--text-primary);
    }

    a {
        color: var(--primary);
        text-decoration: none;
        transition: color var(--transition-fast);
    }
    a:hover { color: var(--primary-dark); }

    /* === CONTAINER === */
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 var(--spacing-md);
    }

    /* === TOP NAVIGATION === */
    .top-nav {
        background: var(--bg-card);
        border-bottom: 1px solid var(--border);
        position: sticky;
        top: 0;
        z-index: var(--z-sticky);
        box-shadow: var(--shadow-sm);
    }

    /* Nav container must be full-width — overrides the global .container rule */
    .top-nav .container {
        max-width: 100% !important;
        width: 100% !important;
        margin: 0 !important;
        padding: 0 1.25rem !important;
        height: 100%;
        box-sizing: border-box;
    }

    .nav-content {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: var(--spacing-md) 0;
        gap: var(--spacing-md);
    }

    .logo {
        display: flex;
        align-items: center;
        font-size: 1.5rem;
        font-weight: 700;
        color: var(--primary);
    }

    .logo i {
        font-size: 1.75rem;
        transform: rotate(-15deg);
        margin-top: -5px;
        overflow-x: visible;
        margin-right: -3px;
    }

    .search-container {
        margin: 0 auto;
        flex: 1;
        max-width: 500px;
    }

    /* Search form — single consolidated definition */
    .search-form {
        position: relative;
        display: flex;
        align-items: center;
    }

    .search-icon {
        position: absolute;
        left: 1.25rem;
        color: var(--text-secondary);
        pointer-events: none;
    }

    .search-input {
        width: 100%;
        padding: 0.75rem 1rem 0.75rem 2.75rem;
        border: 1.5px solid var(--border, #2d3142);
        border-radius: var(--radius-md, 10px);
        background: var(--surface-color, #1e1f2b);
        color: var(--text-primary, #f1f5f9);
        font-size: 0.9rem;
        outline: none;
        transition: border-color 0.3s ease, box-shadow 0.3s ease;
    }

    .search-input:focus {
        outline: none;
        border-color: #667eea;
        box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    }

    .search-btn {
        position: absolute;
        left: 0.75rem;
        top: 50%;
        transform: translateY(-50%);
        background: none;
        border: none;
        color: var(--text-muted, #64748b);
        cursor: pointer;
        padding: 0.25rem;
        transition: color 0.3s ease;
    }
    .search-btn:hover { background: var(--btn-hover-bg); }

    .desktop-hidden { display: none; }

    .desktop-menu {
        display: none;
        gap: var(--spacing-md);
    }

    .nav-link, .nav-btn {
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
        padding: var(--spacing-sm) var(--spacing-md);
        border-radius: var(--radius-md);
        font-weight: 500;
        font-family: var(--font-display);
        transition: background var(--transition-fast), color var(--transition-fast);
    }
    .nav-link:hover {
        background: var(--brand-accent-soft);
        color: var(--brand-accent);
    }

    .nav-btn {
        background: var(--bg-hover);
        border: 1px solid var(--border);
    }

    .create-btn {
        background: var(--btn-bg);
        color: var(--btn-text);
        border: none;
        border-radius: var(--radius-pill);
        padding: 8px 8px;
        border: 1px solid var(--btn-border);
    }
    .create-btn:hover { background: var(--btn-hover-bg); color: var(--btn-text); }


    /* === BUTTONS === */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm) var(--spacing-lg);
        border: none;
        border-radius: var(--radius-md);
        font-size: 0.875rem;
        font-weight: 600;
        cursor: pointer;
        transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
        text-decoration: none;
    }

    .btn-primary { background: var(--btn-bg); color: var(--btn-text); border: 1px solid var(--btn-border); }
    .btn-primary:hover {
        background: var(--btn-hover-bg);
        color: var(--btn-text);
        transform: translateY(-1px);
        box-shadow: var(--shadow-md);
    }

    .btn-secondary {
        background: var(--bg-hover);
        color: var(--text-primary);
        border: 1px solid var(--border);
    }
    .btn-secondary:hover { background: var(--border); }

    .btn-danger { background: var(--danger); color: white; }
    .btn-danger:hover { background: #dc2626; }

    .btn-block { width: 100%; }
    .btn-sm { padding: 0.375rem var(--spacing-md); font-size: 0.8125rem; }

    .btn,
    .btn-primary,
    .btn-secondary,
    .btn-danger,
    .cm-btn,
    .cm-btn-primary,
    .cm-btn-secondary,
    .auth-choice-btn,
    .ob-btn,
    .ks-new-btn,
    .ks-btn-submit,
    .ks-act-btn,
    .page-btn {
      transition: transform var(--anim-dur-micro) var(--anim-ease-out),
                  background var(--anim-dur-micro) ease,
                  box-shadow var(--anim-dur-micro) ease;
    }

    .btn:active,
    .btn-primary:active,
    .btn-secondary:active,
    .btn-danger:active,
    .cm-btn:active,
    .auth-choice-btn:active,
    .ob-btn:active,
    .ks-new-btn:active,
    .ks-btn-submit:active,
    .ks-act-btn:active,
    .page-btn:active {
      transform: scale(0.97);
    }

    @media (prefers-reduced-motion: reduce) {
      .btn:active, .btn-primary:active, .btn-secondary:active,
      .cm-btn:active, .ob-btn:active { transform: none; }
    }

    /* === CARDS (base) === */
    .post-card, .user-card, .auth-card, .create-card, .post-detail-card {
        background: var(--bg-card);
        border-radius: var(--radius-lg);
        border: 1px solid var(--border);
        box-shadow: var(--shadow-sm);
        transition: transform var(--transition-base), box-shadow var(--transition-base);
    }

    /* === POST CARD — single consolidated definition === */
    .posts-grid {
        display: grid;
        gap: var(--spacing-lg);
    }

    .post-card {
        position: relative;
        padding: var(--spacing-xl);
        border-radius: var(--radius-lg);
        overflow: hidden;
        transition: transform var(--transition-base), box-shadow var(--transition-base);
    }

    .post-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-lg);
    }

    /* FIX: was "height: 1   px" (spaces in value = invalid) — fixed to 6px */
    .post-card::before {
        content: "";
        position: absolute;
        top: 0;
        left: 2px;
        right: 2px;
        height: 6px;
        background: var(--subject-color, var(--primary));
        border-top-left-radius: var(--radius-lg);
        border-top-right-radius: var(--radius-lg);
        opacity: 0.6;
    }

    .post-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: var(--spacing-md);
    }

    .post-author {
        display: flex;
        align-items: center;
        gap: var(--spacing-md);
        color: var(--text-primary);
        text-decoration: none;
    }

    .author-avatar {
        width: 40px;
        height: 40px;
        border-radius: var(--radius-pill);
        object-fit: cover;
    }

    .author-info { display: flex; flex-direction: column; }
    .author-name { font-weight: 600; font-size: 0.9375rem; }
    .post-time   { font-size: 0.8125rem; color: var(--text-muted); }

    .post-options { position: relative; }

    .options-btn {
        background: none;
        border: none;
        color: var(--text-muted);
        cursor: pointer;
        padding: var(--spacing-xs);
        border-radius: var(--radius-sm);
        font-size: 1.25rem;
        transition: color var(--transition-fast);
    }
    .options-btn:hover { color: var(--primary); }

    .options-menu {
        display: none;
        position: absolute;
        top: 100%;
        right: 0;
        background: white;
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-lg);
        min-width: 150px;
        z-index: var(--z-dropdown);
        overflow: hidden;
    }
    .options-menu.active { display: block; }

    .options-menu a,
    .options-menu button {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        padding: 0.875rem 1.125rem;
        width: 100%;
        text-align: left;
        text-decoration: none;
        color: var(--text-primary);
        border: none;
        background: none;
        cursor: pointer;
        font-size: 0.9375rem;
        font-weight: 500;
        transition: background 0.2s ease;
    }
    .options-menu a:hover    { background: var(--bg-hover); }
    .options-menu button     { color: #ef4444; }
    .options-menu button:hover { background: rgba(239, 68, 68, 0.1); }
    .options-menu i { font-size: 1rem; width: 18px; }

    .post-content { margin-bottom: var(--spacing-md); }
    .post-link    { color: var(--text-primary); }

    .post-title {
        font-size: 1.125rem;
        font-weight: 700;
        margin-bottom: var(--spacing-sm);
        line-height: 1.4;
    }

    .post-description {
        color: var(--text-secondary);
        font-size: 0.9375rem;
        line-height: 1.6;
    }

    /* Subject badge */
    .post-subject-badge {
        display: inline-flex;
        align-items: center;
        gap: 0.375rem;
        padding: 0.375rem 0.75rem;
        border-radius: var(--radius-pill);
        font-size: 0.75rem;
        font-weight: 700;
        margin-top: var(--spacing-md);
        background: rgba(0, 0, 0, 0.03);
        border: 1px solid var(--border-light);
        color: var(--subject-color, var(--primary));
        width: fit-content;
    }

    .document-badge {
        display: inline-flex;
        align-items: center;
        gap: var(--spacing-sm);
        background: var(--bg-hover);
        padding: var(--spacing-sm) var(--spacing-md);
        border-radius: var(--radius-md);
        font-size: 0.8125rem;
        margin-top: var(--spacing-md);
    }

    .price-tag {
        background: var(--primary);
        color: white;
        padding: 0.125rem var(--spacing-sm);
        border-radius: var(--radius-sm);
        font-weight: 600;
    }

    .free-tag {
        background: var(--success);
        color: white;
        padding: 0.125rem var(--spacing-sm);
        border-radius: var(--radius-sm);
        font-weight: 600;
    }

    .post-actions {
        display: flex;
        align-items: center;
        gap: var(--spacing-lg);
        padding-top: var(--spacing-md);
        border-top: 1px solid var(--border-light);
    }

    .action-form { display: inline; }

    .action-btn {
        display: inline-flex;
        align-items: center;
        gap: var(--spacing-xs);
        background: none;
        border: none;
        color: var(--text-muted);
        cursor: pointer;
        font-size: 0.875rem;
        padding: var(--spacing-xs) var(--spacing-sm);
        border-radius: var(--radius-sm);
        transition: background var(--transition-fast), color var(--transition-fast);
        text-decoration: none;
    }
    .action-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
    .action-btn.liked { color: var(--danger); }
    .action-btn i { font-size: 1.125rem; }

    /* === FORMS === */
    .form-group { margin-bottom: var(--spacing-lg); }

    .form-group label {
        display: block;
        font-weight: 600;
        margin-bottom: var(--spacing-sm);
        color: var(--text-primary);
    }

    .form-control {
        width: 100%;
        padding: var(--spacing-sm) var(--spacing-md);
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        font-size: 0.9375rem;
        transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    }
    .form-control:focus {
        outline: none;
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    }
    .form-control.textarea { resize: vertical; min-height: 100px; }

    .error {
        display: block;
        color: var(--danger);
        font-size: 0.8125rem;
        margin-top: var(--spacing-xs);
    }
    .form-hint {
        display: block;
        color: var(--text-muted);
        font-size: 0.8125rem;
        margin-top: var(--spacing-xs);
    }

    .checkbox-group { display: flex; align-items: center; gap: var(--spacing-sm); }
    .checkbox-group input[type="checkbox"] { width: auto; }

    /* File Upload */
    .file-upload-container { position: relative; }
    .file-input { position: absolute; opacity: 0; width: 0; height: 0; }

    .file-label {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: var(--spacing-sm);
        padding: var(--spacing-xl);
        border: 2px dashed var(--border);
        border-radius: var(--radius-md);
        cursor: pointer;
        transition: border-color var(--transition-fast), background var(--transition-fast);
        text-align: center;
    }
    .file-label:hover { border-color: var(--primary); background: var(--bg-hover); }
    .file-label i { font-size: 2rem; color: var(--primary); }

    /* === AUTH PAGES === */
    .auth-container {
        display: flex;
        align-items: center;
        justify-content: center;
        min-height: calc(100vh - 200px);
    }

    .auth-card {
        width: 100%;
        max-width: 450px;
        padding: var(--spacing-2xl);
    }

    .auth-header { text-align: center; margin-bottom: var(--spacing-xl); }
    .auth-icon { font-size: 3rem; color: var(--primary); margin-bottom: var(--spacing-md); }
    .auth-header h1 { margin-bottom: var(--spacing-sm); }
    .auth-header p { color: var(--text-secondary); }

    .auth-footer {
        text-align: center;
        margin-top: var(--spacing-lg);
        padding-top: var(--spacing-lg);
        border-top: 1px solid var(--border-light);
    }

    /* === FEED === */
    .feed-container {
        max-width: 1000px;
        margin: 0 auto;
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .feed-header { margin-bottom: var(--spacing-xl); }
    .feed-header h1 { margin-bottom: var(--spacing-sm); }
    .feed-subtitle { color: var(--text-secondary); margin-bottom: var(--spacing-lg); }
    .feed-toggle { display: flex; gap: var(--spacing-md); margin-top: var(--spacing-md); }

    .toggle-btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        border-radius: var(--radius-md);
        font-weight: 600;
        color: var(--text-muted);
        transition: background var(--transition-fast), color var(--transition-fast);
    }
    .toggle-btn.active { background: var(--primary); color: white; }

    /* Subject Filter */
    .subject-filter {
        margin-top: 0.75px;
        padding-top: var(--spacing-lg);
        border-top: 1px solid var(--border-light);
    }
    .subject-filter label { display: block; font-weight: 600; margin-bottom: var(--spacing-sm); }

    .subject-buttons { display: flex; gap: var(--spacing-sm); flex-wrap: wrap; }

    .subject-btn {
        display: inline-flex;
        align-items: center;
        gap: 0.375rem;
        padding: 0.5rem 1rem;
        border-radius: var(--radius-pill);
        background: var(--bg-hover);
        font-size: 0.875rem;
        font-weight: 600;
        border: 2px solid transparent;
        cursor: pointer;
        transition: border-color var(--transition-base), color var(--transition-base), background var(--transition-base), transform var(--transition-base);
    }
    .subject-btn:hover {
        border-color: var(--subject-color, var(--border));
        color: var(--subject-color, var(--text-primary));
        background: var(--bg-card);
    }
    .subject-btn.active {
        background: var(--subject-color, var(--primary));
        border-color: var(--subject-color, var(--primary));
        color: white;
    }

    /* === PROFILE === */
        /* .profile-container {
            max-width: 1000px;
            margin: 0 auto;
            padding: var(--spacing-xl) var(--spacing-md);
        } */

    /* .profile-header {
        background: var(--bg-card);
        border-radius: var(--radius-lg);
        border: 1px solid var(--border);
        box-shadow: var(--shadow-sm);
        overflow: hidden;
        margin-bottom: var(--spacing-xl);
    }
    */

    .profile-cover {
        height: 150px;
        background: linear-gradient(135deg, var(--primary), var(--secondary));
    }



    /* Single consolidated profile-info */
    .profile-info {
        display: flex;
        align-items: flex-end;
        gap: var(--spacing-xl);
        padding: 0 var(--spacing-xl) var(--spacing-lg);
        margin-top: -60px;
    }

    .profile-details { flex: 1; }

    .profile-avatar {
        width: 120px;
        height: 120px;
        border-radius: var(--radius-pill);
        border: 4px solid white;
        object-fit: cover;
        margin-bottom: var(--spacing-md);
    }

    .profile-username {
        color: var(--text-muted);
        margin-bottom: var(--spacing-md);
        font-size: 0.9375rem;
    }

    .profile-bio {
        color: var(--text-secondary);
        line-height: 1.6;
        margin-top: var(--spacing-sm);
        max-width: 600px;
    }

    /* Single consolidated profile-stats */
    .profile-stats {
        display: flex;
        justify-content: flex-start;
        gap: var(--spacing-2xl);
        padding: var(--spacing-lg) var(--spacing-xl);
        border-top: 1px solid var(--border-light);
    }
    .profile-stats a { color: inherit; }
    .profile-stats a:hover .stat-value { color: var(--primary); }

    .stat { display: flex; flex-direction: column; }
    .stat-value { font-size: 1.25rem; font-weight: 700; color: var(--text-primary); }
    .stat-label { font-size: 0.8125rem; color: var(--text-muted); display: block; }

    /* Streak styling */
    .streak-stat .streak-value {
        color: #f97316;
    }
    .streak-stat .streak-value:hover {
        animation: flame 0.5s ease-in-out infinite alternate;
    }
    @keyframes flame {
        0% { transform: scale(1); }
        100% { transform: scale(1.1); }
    }

    /* XP styling */
    .xp-stat .xp-value {
        color: #eab308;
    }
    .xp-stat .xp-value:hover {
        animation: star-glow 0.5s ease-in-out infinite alternate;
    }
    @keyframes star-glow {
        0% { transform: scale(1); filter: brightness(1); }
        100% { transform: scale(1.1); filter: brightness(1.2); }
    }

    /* Single consolidated profile-actions */
    .profile-actions {
        padding: var(--spacing-lg) var(--spacing-xl);
        border-top: 1px solid var(--border-light);
        display: flex;
        justify-content: flex-end;
    }

    .profile-posts { margin-top: var(--spacing-2xl); }
    .profile-posts h2 { display: flex; align-items: center; gap: var(--spacing-sm); margin-bottom: var(--spacing-xl); }
    .profile-posts .empty-state { margin-top: var(--spacing-xl); }

    /* === PAGINATION === */
    .pagination {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: var(--spacing-md);
        margin-top: var(--spacing-xl);
    }

    .page-btn {
        display: inline-flex;
        align-items: center;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm) var(--spacing-lg);
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        font-weight: 500;
        transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
        color: var(--text-primary);
    }
    .page-btn:hover { background: var(--primary); color: white; border-color: var(--primary); }
    .page-info { color: var(--text-muted); font-size: 0.875rem; }

    /* === EMPTY STATES === */
    .empty-state { text-align: center; padding: var(--spacing-2xl); }
    .empty-state i { font-size: 4rem; color: var(--text-muted); margin-bottom: var(--spacing-lg); display: block; }
    .empty-state h2 { color: var(--text-secondary); margin-bottom: var(--spacing-md); }
    .empty-state p  { color: var(--text-muted); margin-bottom: var(--spacing-lg); }

    /* === USER CARDS === */
    .users-grid { display: grid; gap: var(--spacing-lg); }

    .user-card {
        padding: var(--spacing-lg);
        display: flex;
        gap: var(--spacing-md);
        align-items: center;
    }

    .user-avatar  { width: 60px; height: 60px; border-radius: var(--radius-pill); object-fit: cover; flex-shrink: 0; }
    .user-info    { flex: 1; }
    .user-name    { font-weight: 600; color: var(--text-primary); display: block; margin-bottom: var(--spacing-xs); }
    .user-username { color: var(--text-muted); font-size: 0.875rem; margin-bottom: var(--spacing-xs); }
    .user-bio     { color: var(--text-secondary); font-size: 0.875rem; margin-bottom: var(--spacing-sm); }
    .user-stats   { display: flex; gap: var(--spacing-md); font-size: 0.8125rem; color: var(--text-muted); }
    .user-actions { flex-shrink: 0; }

    /* === POST VIEW (DETAIL) === */
    .post-view-container { max-width: 800px; margin: 0 auto; }

    .post-detail-card { padding: var(--spacing-xl); margin-bottom: var(--spacing-xl); }
    .post-body { margin-bottom: var(--spacing-xl); }
    .post-body .post-title { font-size: 1.75rem; margin-bottom: var(--spacing-md); }

    .document-section {
        background: var(--bg-hover);
        padding: var(--spacing-lg);
        border-radius: var(--radius-lg);
        margin-bottom: var(--spacing-xl);
    }

    .document-info    { display: flex; align-items: center; gap: var(--spacing-md); margin-bottom: var(--spacing-md); }
    .file-icon        { font-size: 2.5rem; color: var(--primary); }
    .document-details { flex: 1; }
    .document-details h3 { font-size: 1rem; margin-bottom: var(--spacing-xs); }
    .document-details p  { font-size: 0.8125rem; color: var(--text-muted); }
    .document-actions { display: flex; gap: var(--spacing-md); flex-wrap: wrap; }

    .price-badge, .free-badge {
        padding: var(--spacing-xs) var(--spacing-md);
        border-radius: var(--radius-md);
        font-weight: 600;
        font-size: 1.125rem;
    }
    .price-badge { background: var(--primary); color: white; }
    .free-badge  { background: var(--success);  color: white; }

    .post-actions-bar {
        display: flex;
        gap: var(--spacing-xl);
        padding: var(--spacing-lg) 0;
        border-top: 1px solid var(--border-light);
        border-bottom: 1px solid var(--border-light);
    }
    .action-btn.large { font-size: 1rem; padding: var(--spacing-sm) var(--spacing-md); }

    /* === COMMENTS === */
    .comments-section {
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        padding: var(--spacing-xl);
    }

    .comment-form-container { margin-bottom: var(--spacing-xl); }
    .comment-form { display: flex; gap: var(--spacing-md); align-items: flex-start; }

    .comment-avatar {
        width: 40px;
        height: 40px;
        border-radius: var(--radius-pill);
        object-fit: cover;
        flex-shrink: 0;
    }

    .comment-input-group { flex: 1; display: flex; gap: var(--spacing-md); }

    .comment-input {
        flex: 1;
        padding: var(--spacing-sm) var(--spacing-md);
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        resize: none;
        min-height: 60px;
        font-family: inherit;
        font-size: 0.9375rem;
        transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    }
    .comment-input:focus {
        outline: none;
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    }

    .comments-list { display: flex; flex-direction: column; gap: var(--spacing-lg); }
    .comment { display: flex; gap: var(--spacing-md); }
    .comment-content { flex: 1; min-width: 0; }
    .comment-header { display: flex; align-items: center; gap: var(--spacing-md); margin-bottom: var(--spacing-sm); }
    .comment-author { font-weight: 600; color: var(--text-primary); text-decoration: none; }
    .comment-author:hover { color: var(--primary); }
    .comment-time { font-size: 0.8125rem; color: var(--text-muted); }
    .comment-text { color: var(--text-secondary); line-height: 1.6; word-wrap: break-word; margin: 0; }

    .login-prompt { text-align: center; padding: var(--spacing-xl); color: var(--text-muted); }

    .empty-comments { text-align: center; padding: var(--spacing-2xl); color: var(--text-muted); }
    .empty-comments i { font-size: 3rem; margin-bottom: var(--spacing-md); opacity: 0.5; display: block; color: #fff }

    /* ===========================
    CREATE / EDIT PAGES
    =========================== */
    .create-container {
        max-width: 800px;
        margin: 0 auto;
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .create-card { padding: var(--spacing-2xl); }

    .create-header {
        text-align: center;
        margin-bottom: var(--spacing-2xl);
        padding-bottom: var(--spacing-lg);
        border-bottom: 1px solid var(--border-light);
    }
    .create-header h1 {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: var(--spacing-sm);
        font-size: 1.75rem;
        margin-bottom: var(--spacing-sm);
    }
    .create-header p { color: var(--text-secondary); font-size: 0.9375rem; }

    .create-form { display: flex; flex-direction: column; gap: var(--spacing-lg); }

    .form-actions {
        display: flex;
        justify-content: flex-end;
        gap: var(--spacing-md);
        padding-top: var(--spacing-lg);
        border-top: 1px solid var(--border-light);
    }

    /* FIX: was defined 3 times identically — merged into one */
    .preview-card {
        background: var(--bg-hover);
        padding: var(--spacing-xl);
        border-radius: var(--radius-lg);
        border: 1px solid var(--border);
    }
    .preview-card h3 {
        font-size: 0.875rem;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        color: var(--text-muted);
        margin-bottom: var(--spacing-md);
    }

    /* FIX: was defined 3 times identically — merged into one */
    .subject-preview {
        display: inline-flex;
        align-items: center;
        gap: var(--spacing-sm);
        background: var(--bg-card);
        padding: var(--spacing-md) var(--spacing-lg);
        border-radius: var(--radius-pill);
        font-weight: 600;
        box-shadow: var(--shadow-sm);
        transition: box-shadow var(--transition-base), background var(--transition-base);
    }

    /* ===========================
    PROFILE EDIT PAGE
    =========================== */
    .current-avatar { display: flex; justify-content: center; margin-bottom: var(--spacing-md); }
    .current-avatar img {
        width: 120px;
        height: 120px;
        border-radius: var(--radius-pill);
        object-fit: cover;
        border: 4px solid var(--bg-card);
        box-shadow: var(--shadow-md);
    }
    .bio-counter { display: flex; justify-content: flex-end; }

    /* ===========================
    ADMIN - MANAGE POSTS
    =========================== */
    .admin-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .admin-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: var(--spacing-2xl);
    }
    .admin-header h1 { display: flex; align-items: center; gap: var(--spacing-sm); }

    /* FIX: was defined twice identically — merged into one */
    .filters-bar {
        background: var(--bg-card);
        padding: var(--spacing-xl);
        border-radius: var(--radius-lg);
        border: 1px solid var(--border);
        margin-bottom: var(--spacing-2xl);
        box-shadow: var(--shadow-sm);
    }

    .filters-group { display: flex; gap: var(--spacing-md); align-items: center; flex-wrap: wrap; }
    .filters-group .form-control { flex: 1; min-width: 220px; }

    /* FIX: was defined 3 times with conflicting styles — using the improved final version */
    .subject-badge {
        display: inline-flex;
        align-items: center;
        gap: 0.375rem;
        padding: 0.35rem 0.75rem;
        border-radius: var(--radius-pill);
        font-size: 0.75rem;
        font-weight: 600;
        background: rgba(99, 102, 241, 0.08);
        border: 1px solid rgba(99, 102, 241, 0.2);
    }

    /* FIX: was defined 3 times with conflicting styles — using the improved final version */
    .engagement-stats {
        display: flex;
        gap: var(--spacing-md);
        font-size: 0.8125rem;
        color: var(--text-secondary);
    }
    .engagement-stats span {
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
        background: var(--bg-hover);
        padding: 0.25rem 0.6rem;
        border-radius: var(--radius-pill);
    }

    .actions-cell { white-space: nowrap; }
    .actions-cell .btn { margin-right: var(--spacing-xs); }

    /* FIX: was defined twice identically — merged into one */
    .table-container {
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        padding: 1.5rem;
        margin-top: 1rem;
        box-shadow: var(--shadow-sm);
    }

    .data-table { width: 100%; border-collapse: collapse; }
    .data-table thead { border-bottom: 1px solid var(--border); }
    .data-table th {
        text-align: left;
        font-size: 0.75rem;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        color: var(--text-muted);
        padding: 0.75rem 1rem;
    }
    .data-table td {
        padding: 1rem;
        border-bottom: 1px solid var(--border-light);
        vertical-align: middle;
    }
    .data-table td:first-child { padding-left: 0; }
    .data-table td:last-child  { padding-right: 0; }
    .data-table tbody tr:last-child td { border-bottom: none; }
    .data-table tbody tr:hover { background: var(--bg-hover); }

    /* ===========================
    HERO SECTION
    =========================== */
    .hero-section {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: flex-start;
        padding: 4rem 2rem;
        background-image: url('../images/banner.png');
        background-repeat: no-repeat;
        background-position: right center;
        background-size: cover;
        color: white;
        box-sizing: border-box;
    }

    .hero-content h1 { font-size: 2.5rem; margin-bottom: 0.5rem; color: white; }
    .hero-content p  { font-size: 1rem;   margin-bottom: 1.5rem; color: white; }
    .hero-buttons { display: flex; font-size: 1.25rem; gap: 1rem; margin-bottom: 1.5rem; }

    /* ===========================
    MODERN AUTH PAGE
    =========================== */
    .modern-auth-page {
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
        overflow: hidden;
        padding: 2rem 1rem;
    }

    .auth-background {
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        z-index: 0;
    }





    .auth-wrapper {
        max-width: 1200px;
        width: 100%;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
        position: relative;
        z-index: 1;
    }

    .auth-branding { color: white; display: flex; align-items: center; }
    .branding-content { width: 100%; }

    .brand-logo {
        width: 80px;
        height: 80px;
        border-radius: var(--radius-lg);
        background: rgba(255, 255, 255, 0.15);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 2.5rem;
        margin-bottom: 2rem;
    }

    .brand-title { font-size: 2.5rem; font-weight: 800; margin-bottom: 1rem; }
    .gradient-text {
        color: var(--text-primary);
    }
    .brand-description { font-size: 1.1rem; opacity: 0.9; margin-bottom: 2rem; }
    .brand-features { display: flex; flex-direction: column; gap: 1rem; }
    .feature-item { display: flex; align-items: center; gap: 0.75rem; font-size: 1rem; }
    .feature-item i { color: #4ade80; }

    .auth-form-container { display: flex; align-items: center; }

    .auth-card-modern {
        width: 100%;
        background: white;
        border-radius: 24px;
        padding: 3rem;
        box-shadow: 0 30px 80px rgba(0, 0, 0, 0.25);
    }

    .auth-header-modern { text-align: center; margin-bottom: 2rem; }

    .auth-icon-wrapper {
        width: 70px;
        height: 70px;
        border-radius: 50%;
        background: linear-gradient(135deg, #667eea, #764ba2);
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 1.5rem;
        font-size: 2rem;
        color: white;
    }

    .auth-title    { font-size: 2rem; font-weight: 800; margin-bottom: 0.5rem; }
    .auth-subtitle { font-size: 0.95rem; color: #6b7280; }

    .modern-form { display: flex; flex-direction: column; gap: 1.5rem; }
    .form-group-modern { display: flex; flex-direction: column; gap: 0.5rem; }
    .form-label-modern { font-weight: 600; font-size: 0.9rem; display: flex; align-items: center; gap: 0.5rem; }

    .input-wrapper { position: relative; }

    .form-input-modern {
        width: 100%;
        padding: 0.9rem 1rem 0.9rem 3rem;
        border-radius: var(--radius-md);
        border: 2px solid #e5e7eb;
        font-size: 1rem;
        transition: 0.3s ease;
    }
    .form-input-modern:focus {
        outline: none;
        border-color: #667eea;
        box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
    }

    .input-icon {
        position: absolute;
        left: 1rem;
        top: 50%;
        transform: translateY(-50%);
        color: #9ca3af;
    }

    .checkbox-modern { display: flex; align-items: center; gap: 0.75rem; font-size: 0.9rem; }
    .checkbox-modern input { accent-color: #667eea; }

    .btn-auth-modern {
        width: 100%;
        padding: 1rem;
        border-radius: var(--radius-md);
        border: 1px solid var(--btn-border);
        background: var(--btn-bg);
        color: var(--btn-text);
        font-weight: 600;
        font-size: 1rem;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 0.75rem;
        transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
        box-shadow: var(--shadow-sm);
    }
    .btn-auth-modern:hover {
        background: var(--btn-hover-bg);
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
    }

    .auth-footer-modern { text-align: center; margin-top: 2rem; font-size: 0.9rem; }
    .auth-footer-modern a { color: #667eea; font-weight: 600; text-decoration: none; }

    /* ===========================
    RESPONSIVE — CONSOLIDATED
    (was split across multiple
    duplicate @media blocks)
    =========================== */

    /* Tablets (768px and up) */
    @media (min-width: 768px) {
        body { padding-bottom: 0; }
        .desktop-menu { display: flex; }
        .grid-template-columns { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
        .users-grid { grid-template-columns: repeat(2, 1fr); }
        .nav-item span { display: block; }
    }

    /* Desktop (1024px and up) */
    @media (min-width: 1024px) {
        .posts-grid { grid-template-columns: repeat(2, 1fr); }
        .container  { padding: 0 var(--spacing-xl); }
    }

    /* Large screens */
    @media (min-width: 1280px) {
        .posts-grid { grid-template-columns: repeat(2, 1fr); }
    }

    /* Print styles */
    @media print {
        .top-nav, .post-actions, .profile-actions, .btn { display: none; }
    }

    /* FIX: two separate @media (max-width: 768px) blocks merged into one */
    @media (max-width: 768px) {

        .hero-section {
            max-height: 200px;
            margin: 0;
            background-position: center bottom;
            text-align: center;
            flex-direction: column;
            padding: 3rem 1.5rem;
        }
        .hero-buttons {
            width: 50%;
            margin: 0 auto;
            flex-direction: column;
            gap: 1rem;
            justify-content: center;
        }
        .hero-content p  { margin-top: 50%; font-weight: 600; }
        .hero-content h1 { font-size: 2.5rem; }

        .mobile-hidden { display: none; }

        .admin-header { flex-direction: column; align-items: flex-start; gap: var(--spacing-md); }
        .filters-group { flex-direction: column; align-items: stretch; }
        .engagement-stats { flex-direction: column; gap: 0.25rem; }
        .post-cell { max-width: 200px; }

        .auth-wrapper { grid-template-columns: 1fr; }
        .auth-branding { display: none; }
        .auth-card-modern { padding: 2rem; }

            /* Profile page: reduce width and padding on mobile */
            .profile-info {
                flex-direction: column;
                gap: var(--spacing-lg);
                padding: 0 var(--spacing-md) var(--spacing-md);
            }
            .profile-bio {
                max-width: 100%;
            }
            .profile-stats {
                flex-direction: column;
                gap: var(--spacing-md);
                padding: var(--spacing-md);
            }
            .profile-actions {
                padding: var(--spacing-md);
            }
    }

    /* FIX: show bottom nav on mobile */
    @media (max-width: 767px) {
        .profile-avatar {
            width: 100px;
            height: 100px;
            border-radius: 50%;
            object-fit: cover;
            margin-bottom: 0.5rem;
            border: 5px solid white;
        }
    }

    /* Mobile (480px and below) */
    @media (max-width: 480px) {
        .posts-grid { gap: 1rem; }

        .post-card    { padding: 1rem; border-radius: var(--radius-md); }
        .post-header  { margin-bottom: 0.75rem; gap: 0.75rem; }
        .author-avatar { width: 36px; height: 36px; }
        .author-name  { font-size: 0.875rem; }
        .post-time    { font-size: 0.6875rem; }

        .options-btn  { width: 32px; height: 32px; }
        .options-btn i { font-size: 0.875rem; }
        .options-menu { min-width: 140px; }
        .options-menu a,
        .options-menu button { padding: 0.75rem 1rem; font-size: 0.875rem; }
        .options-menu i { font-size: 0.9375rem; width: 16px; }

        .post-content  { margin-bottom: 0.875rem; }
        .post-title    { font-size: 1rem; margin-bottom: 0.375rem; }
        .post-description { font-size: 0.8125rem; -webkit-line-clamp: 2; }

        .post-subject-badge { font-size: 0.6875rem; padding: 0.25rem 0.625rem; margin-bottom: 0.625rem; }
        .post-subject-badge i { font-size: 0.75rem; }

        .document-badge { padding: 0.625rem 0.75rem; gap: 0.5rem; margin-bottom: 0.875rem; }
        .document-badge i:first-child { font-size: 1rem; }
        .document-badge > span:first-of-type { font-size: 0.75rem; }

        .price-tag, .free-tag { padding: 0.1875rem 0.5rem; font-size: 0.6875rem; }

        .post-actions  { padding-top: 0.875rem; gap: 0.375rem; }
        .action-btn    { padding: 0.5rem 0.625rem; gap: 0.375rem; font-size: 0.75rem; border-radius: var(--radius-sm); }
        .action-btn i  { font-size: 0.875rem; }
        .action-btn span { font-size: 0.75rem; }

        .auth-card-modern { padding: 1.5rem; }
        .auth-title    { font-size: 1.5rem; }
    }

    /* Extra Small Mobile (360px and below) */
    @media (max-width: 360px) {
        .post-card    { padding: 0.875rem; }
        .author-avatar { width: 32px; height: 32px; }
        .author-name  { font-size: 0.8125rem; }
        .options-btn  { width: 30px; height: 30px; }
        .post-title   { font-size: 0.9375rem; }
        .post-description { font-size: 0.75rem; }
        .document-badge { gap: 0.375rem; }
        .document-badge > span:first-of-type { flex-basis: 100%; }
        .price-tag, .free-tag { margin-left: 0; }
        .action-btn   { padding: 0.4375rem 0.5rem; }
    }

    .ob-overlay {
        position: fixed;
        inset: 0;
        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;
    }
    @keyframes obFadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }
    .ob-card {
        display: none;
        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 obSlideUp {
        from { opacity: 0; transform: translateY(24px) scale(0.96); }
        to { opacity: 1; transform: translateY(0) scale(1); }
    }
    .ob-stripe {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: linear-gradient(90deg, #3b82f6 0%, #8b5cf6 50%, #06b6d4 100%);
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    }
    .ob-progress {
        display: flex;
        justify-content: center;
        gap: 0.5rem;
        margin-bottom: 1.75rem;
    }
    .ob-progress-dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: var(--border, #3e4254);
        transition: width 0.3s ease, border-radius 0.3s ease, background 0.3s ease;
    }
    .ob-progress-dot.active {
        width: 24px;
        border-radius: 4px;
        background: linear-gradient(90deg, #3b82f6, #8b5cf6);
    }
    .ob-progress-dot.completed {
        background: #10b981;
    }
    .ob-icon {
        width: 64px;
        height: 64px;
        background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
        border-radius: 18px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.75rem;
        color: white;
        margin: 0 auto 1.5rem;
        box-shadow: 0 8px 24px rgba(59, 130, 246, 0.35);
    }
    .ob-title {
        text-align: center;
        font-family: var(--font-display);
        font-size: 1.35rem;
        font-weight: 800;
        letter-spacing: -0.03em;
        color: var(--text-primary, #f1f5f9);
        margin: 0 0 0.5rem;
        line-height: 1.2;
    }
    .ob-subtitle {
        text-align: center;
        color: var(--text-muted, #94a3b8);
        font-size: 0.9rem;
        margin: 0 0 1.75rem;
        line-height: 1.6;
    }
    .ob-form { display: flex; flex-direction: column; gap: 1.25rem; }
    .ob-field { display: flex; flex-direction: column; gap: 0.5rem; position: relative; }
    .ob-field label {
        font-size: 0.75rem;
        font-weight: 700;
        color: var(--text-muted, #94a3b8);
        text-transform: uppercase;
        letter-spacing: 0.08em;
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }
    .ob-field label i { color: #3b82f6; }
    .ob-badge {
        display: inline-flex;
        align-items: center;
        padding: 0.2rem 0.6rem;
        background: linear-gradient(135deg, #3b82f6, #8b5cf6);
        color: #fff;
        font-size: 0.65rem;
        font-weight: 700;
        border-radius: var(--radius-sm);
        margin-left: auto;
        text-transform: none;
        letter-spacing: normal;
    }
    .ob-xp-info {
        display: flex;
        justify-content: center;
        gap: 0.75rem;
        margin-bottom: 1.25rem;
        flex-wrap: wrap;
    }
    .ob-xp-item {
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
        font-size: 0.75rem;
        color: var(--text-secondary, #64748b);
        background: rgba(59, 130, 246, 0.1);
        padding: 0.35rem 0.7rem;
        border-radius: var(--radius-lg);
    }
    .ob-xp-item i { color: #eab308; }
    .ob-xp-item strong { color: #8b5cf6; }
    .ob-input {
        padding: 0.8rem 1rem;
        border: 1.5px solid var(--border, #3e4254);
        border-radius: var(--radius-md);
        font-size: 0.95rem;
        background: var(--bg-secondary, #2e3244);
        color: var(--text-primary, #f1f5f9);
        transition: border-color 0.2s ease, box-shadow 0.2s ease;
        width: 100%;
        box-sizing: border-box;
    }
    .ob-input:focus {
        outline: none;
        border-color: #3b82f6;
        box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
    }
    .ob-input::placeholder { color: var(--text-muted, #64748b); }
    .ob-dropdown {
        position: absolute;
        top: calc(100% + 4px);
        left: 0;
        right: 0;
        background: var(--bg-card, #1e1f2e);
        border: 1.5px solid rgba(59, 130, 246, 0.3);
        border-radius: var(--radius-md);
        max-height: 220px;
        overflow-y: auto;
        display: none;
        z-index: 10000;
        box-shadow: 0 12px 32px rgba(0,0,0,0.2);
    }
    .ob-dropdown.open { display: block; }
    .ob-dropdown-item {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
        cursor: pointer;
        color: var(--text-primary, #f1f5f9);
        transition: background 0.15s ease, color 0.15s ease;
    }
    .ob-dropdown-item:hover { background: rgba(59, 130, 246, 0.12); color: #3b82f6; }
    .ob-btn {
        padding: 0.85rem 1.25rem;
        background: var(--btn-bg);
        color: var(--btn-text);
        border: 1px solid var(--btn-border);
        border-radius: var(--radius-md);
        font-size: 0.95rem;
        font-weight: 700;
        cursor: pointer;
        transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
        box-shadow: var(--shadow-sm);
    }
    .ob-btn:hover {
        background: var(--btn-hover-bg);
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
    }
    .ob-btn-secondary {
        background: transparent;
        color: var(--text-muted, #94a3b8);
        border: 1px solid var(--border, #3e4254);
        box-shadow: none;
    }
    .ob-btn-secondary:hover {
        background: var(--bg-secondary, #2e3244);
        color: var(--text-primary, #f1f5f9);
        transform: none;
        box-shadow: none;
    }
    .ob-skip-link {
        display: block;
        text-align: center;
        font-size: 0.85rem;
        color: var(--text-muted, #64748b);
        margin-top: 0.5rem;
        cursor: pointer;
        transition: color 0.15s ease;
    }
    .ob-skip-link:hover { color: var(--text-primary, #f1f5f9); }
    .ob-submit {
        font-size: 0.875rem;
        font-weight: 700;
        cursor: pointer;
        transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
        box-shadow: 0 4px 14px rgba(37, 99, 235, 0.28);
    }
    .ob-submit:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(37, 99, 235, 0.4); }
    .ob-skip {
        background: none;
        border: none;
        color: var(--text-muted);
        font-size: 0.85rem;
        cursor: pointer;
        text-align: center;
        padding: 0.25rem;
        transition: color 0.2s;
    }
    .ob-skip:hover { color: var(--text-primary); }

    /* ============================================================
    MOTOWN AI — ADMIN PAGES & NEW FEATURE STYLES
   Covers: programmes.html, programme_form.html,
           bookmarks.html, search.html
   ============================================================ */

/* ── Shared page header (used in admin + bookmarks + search) ── */
.home-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.ks-page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    gap: 1rem;
}
.ks-page-header-left {
    display: flex;
    align-items: center;
    gap: 0.875rem;
}
.ks-page-header-left > i {
    font-size: 1.375rem;
    width: 42px; height: 42px;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(37,99,235,0.1);
    color: #2563eb;
    flex-shrink: 0;
}
.ks-page-header h2 {
    font-size: 1.1rem; font-weight: 800;
    color: var(--text-primary); margin: 0 0 0.1rem;
}
.ks-page-header p {
    font-size: 0.78rem; color: var(--text-muted); margin: 0;
}
.ks-new-btn {
    display: inline-flex; align-items: center; gap: 0.4rem;
    padding: 0.5rem 1rem;
    background: var(--btn-bg);
    color: var(--btn-text);
    border: 1px solid var(--btn-border);
    border-radius: 10px;
    font-size: 0.8rem; font-weight: 700;
    text-decoration: none; white-space: nowrap;
    transition: opacity 0.2s, transform 0.2s;
}
.ks-new-btn:hover { background: var(--btn-hover-bg); transform: translateY(-1px); }

/* ── Programme cards (programmes.html) ── */
.ks-prog-grid {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.ks-prog-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1rem 1.125rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    transition: box-shadow 0.2s, border-color 0.2s;
}
.ks-prog-card:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    border-color: var(--primary-light);
}
.ks-prog-card-top {
    display: flex;
    align-items: center;
    gap: 0.875rem;
}
.ks-prog-icon {
    width: 40px; height: 40px;
    border-radius: 9px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}
.ks-prog-name {
    font-size: 0.95rem; font-weight: 700;
    color: var(--text-primary); margin: 0 0 0.2rem;
}
.ks-prog-meta {
    font-size: 0.73rem; color: var(--text-muted);
    display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap;
}
.ks-prog-meta code {
    background: var(--bg-hover);
    padding: 0.1rem 0.35rem;
    border-radius: 4px;
    font-size: 0.68rem;
    color: var(--text-muted);
}
.ks-status-active   { color: #10b981; font-weight: 700; }
.ks-status-inactive { color: #ef4444; font-weight: 700; }
.ks-prog-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.ks-act-btn {
    display: inline-flex; align-items: center; gap: 0.3rem;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.78rem; font-weight: 700;
    text-decoration: none; cursor: pointer;
    border: none; background: none;
    transition: opacity 0.15s, transform 0.15s;
}
.ks-act-btn:hover { opacity: 0.85; transform: translateY(-1px); }
.ks-act-btn--edit   { background: rgba(37,99,235,.1);  color: #2563eb; }
.ks-act-btn--toggle { background: rgba(245,158,11,.1); color: #f59e0b; }
.ks-act-btn--danger { background: rgba(239,68,68,.1);  color: #ef4444; }

/* ── Parent-Child Subject Container ── */
.ks-prog-subjects {
    margin-top: 0.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    padding-top: 0.75rem;
    border-top: 1px dashed var(--border);
}

.ks-subject-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    transition: background 0.2s, border-color 0.2s;
}

[data-theme="dark"] .ks-subject-tag {
    background: rgba(255,255,255,0.03);
}

/* ── Admin form card (programme_form.html, subject_form.html) ── */
.ks-form-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 1.5rem;
}
.ks-form-group { margin-bottom: 1rem; }
.ks-form-label {
    display: block;
    font-size: 0.8rem; font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.ks-form-input {
    width: 100%;
    padding: 0.65rem 0.875rem;
    background: var(--bg-secondary, #f8fafc);
    border: 1.5px solid var(--border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
    box-sizing: border-box;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.ks-form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.ks-form-hint {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}
.ks-form-hint a { color: var(--primary); }
.ks-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.ks-form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding-top: 1.6rem;
}
.ks-form-check input { width: 18px; height: 18px; cursor: pointer; }
.ks-form-check label { font-size: 0.875rem; font-weight: 600; cursor: pointer; color: var(--text-primary); }
.ks-form-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
}
.ks-btn-cancel {
    flex: 1; text-align: center;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.875rem; font-weight: 700;
    color: var(--text-secondary);
    text-decoration: none;
    transition: border-color 0.2s;
}
.ks-btn-cancel:hover { border-color: var(--primary); color: var(--primary); }
.ks-btn-submit {
    flex: 2; padding: 0.75rem;
    background: var(--btn-bg);
    color: var(--btn-text);
    border: 1px solid var(--btn-border);
    border-radius: var(--radius-md);
    font-size: 0.875rem; font-weight: 700;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
}
.ks-btn-submit:hover { background: var(--btn-hover-bg); transform: translateY(-1px); }

/* ── Search page ── */
.ks-search-wrap {
    display: flex; align-items: center; gap: 0.5rem;
    background: var(--bg-card);
    border: 1.5px solid var(--border);
    border-radius: 50px;
    padding: 0.35rem 0.35rem 0.35rem 1rem;
    transition: border-color 0.2s;
    margin-bottom: 1.25rem;
}
.ks-search-wrap:focus-within { border-color: var(--primary); }
.ks-search-wrap input {
    flex: 1; border: none; background: transparent;
    color: var(--text-primary); font-size: 0.95rem;
    outline: none; padding: 0.4rem 0;
}
.ks-search-wrap input::placeholder { color: var(--text-muted); }
.ks-search-clear {
    color: var(--text-muted); padding: 0.4rem 0.6rem;
    font-size: 0.85rem; text-decoration: none;
    transition: color 0.15s;
}
.ks-search-clear:hover { color: var(--text-primary); }
.ks-search-submit {
    flex-shrink: 0; width: 38px; height: 38px;
    background: var(--btn-bg);
    color: var(--btn-text);
    border: 1px solid var(--btn-border);
    border-radius: 50%;
    font-size: 0.9rem; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: background 0.2s;
}
.ks-search-submit:hover { background: var(--btn-hover-bg); }

/* ── Filter chips (search type + subject filters) ── */
.ks-chips-row {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin-bottom: 0.875rem;
}
.ks-chip {
    display: inline-flex; align-items: center; gap: 0.35rem;
    padding: 0.35rem 0.8rem;
    background: var(--bg-card);
    border: 1.5px solid var(--border);
    border-radius: 50px;
    font-size: 0.78rem; font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer; white-space: nowrap;
    transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.ks-chip:hover {
    border-color: var(--sc, var(--primary));
    color: var(--sc, var(--primary));
}
.ks-chip.active {
    background: var(--sc, var(--primary));
    border-color: var(--sc, var(--primary));
    color: white;
}

/* ── Section heading (People / Posts in search) ── */
.ks-section-head {
    display: flex; align-items: center; gap: 0.6rem;
    margin-bottom: 0.75rem;
    padding-bottom: 0.6rem;
    border-bottom: 1px solid var(--border-light);
}
.ks-section-head i { color: var(--primary); font-size: 0.9rem; }
.ks-section-head h2 {
    font-size: 0.95rem; font-weight: 800;
    color: var(--text-primary); margin: 0;
}
.ks-section-head .ks-count {
    margin-left: auto;
    background: rgba(37,99,235,0.1);
    color: #2563eb;
    font-size: 0.72rem; font-weight: 700;
    padding: 0.15rem 0.55rem;
    border-radius: 50px;
}

/* ── User result row (search) ── */
.ks-user-row {
    display: flex; align-items: center; gap: 0.75rem;
    padding: 0.75rem 0.875rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
    margin-bottom: 0.5rem;
}
.ks-user-row:hover {
    border-color: var(--primary-light);
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
    transform: translateY(-1px);
}
.ks-user-row img {
    width: 40px; height: 40px;
    border-radius: 50%; object-fit: cover;
    flex-shrink: 0; border: 2px solid var(--border);
}
.ks-user-name {
    font-family: var(--font-body);
    font-size: 0.875rem; font-weight: 700;
    color: var(--text-primary); margin: 0;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.ks-user-handle {
    font-size: 0.75rem; color: var(--text-muted); margin: 0;
}
.ks-user-stats {
    display: flex; gap: 0.75rem;
    font-size: 0.72rem; color: var(--text-muted);
    flex-shrink: 0;
}

/* ── Bookmarks saved-on line ── */
.ks-saved-on {
    font-size: 0.7rem; color: var(--text-muted);
    margin-top: 0.6rem; padding-top: 0.5rem;
    border-top: 1px solid var(--border-light);
    display: flex; align-items: center; gap: 0.3rem;
}
.ks-saved-on i { font-size: 0.65rem; color: var(--primary); }

/* ── Empty state (feed-empty style) ── */
.ks-empty {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}
.ks-empty i {
    font-size: 2.5rem;
    margin-bottom: 0.875rem;
    display: block;
    opacity: 0.4;
}
.ks-empty p { font-size: 0.9rem; line-height: 1.6; }

/* ── POST ROWS ── */
.post-list { display: flex; flex-direction: column; }
@media (max-width: 640px) {
  .post-list { overflow-x: hidden; }
  .post-row { flex-direction: row !important; align-items: center !important; flex-wrap: nowrap !important; width: 100% !important; min-width: 0 !important; max-width: none !important; }
  .post-row-desktop-only { display: flex !important; }
  .post-row-title { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
}
.post-row {
  display: flex; align-items: center; gap: .875rem; padding: .875rem 1.1rem;
  border-bottom: 1px solid var(--border-light, rgba(255,255,255,.04));
  cursor: pointer; transition: background .14s; text-decoration: none;
}
.post-row:last-child { border-bottom: none; }
.post-row:hover { background: var(--bg-hover, rgba(255,255,255,.04)); }

.post-row-icon { width: 38px; height: 38px; border-radius: 11px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; font-size: .95rem; }

/* AFTER */
.post-row { animation: fadeUp .22s ease-out both; }
.post-row:nth-child(2) { animation-delay: .06s; }
.post-row:nth-child(3) { animation-delay: .12s; }
.post-row:nth-child(4) { animation-delay: .16s; }
.post-row:nth-child(5) { animation-delay: .20s; }
.post-row:nth-child(6) { animation-delay: .24s; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }
@media (max-width: 1023px) { .post-row-desktop-only { display: none; } }

.ct-icon-notes      { background: rgba(16,185,129,.14); color: #10b981; }
.ct-icon-cheatsheet { background: rgba(245,158,11,.14);  color: #f59e0b; }
.ct-icon-quiz       { background: rgba(139,92,246,.14);  color: #8b5cf6; }
.ct-icon-mixed      { background: rgba(6,182,212,.14);   color: #06b6d4; }

.post-row-body { flex: 1; min-width: 0; }
.post-row-title { font-family: var(--font-display); font-size: .875rem; font-weight: 700; color: var(--text-primary, #f1f5f9); letter-spacing: -.02em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin: 0 0 .28rem; }
.post-row-meta { display: flex; align-items: center; gap: .28rem; overflow: hidden; flex-wrap: nowrap; }


.type-badge { font-size: .63rem; font-weight: 700; padding: .1rem .4rem; border-radius: 4px; white-space: nowrap; flex-shrink: 0; }
.type-notes      { background: rgba(16,185,129,.14); color: #10b981; }
.type-cheatsheet { background: rgba(245,158,11,.14);  color: #f59e0b; }
.type-quiz       { background: rgba(139,92,246,.14);  color: #8b5cf6; }
.type-mixed      { background: rgba(6,182,212,.14);   color: #06b6d4; }

.meta-sep  { font-size: .5rem; color: var(--border, #2e3244); flex-shrink: 0; }
.meta-stat { font-size: .67rem; color: var(--text-muted, #64748b); display: inline-flex; align-items: center; gap: .15rem; white-space: nowrap; flex-shrink: 0; }
.meta-chip { display: inline-flex; align-items: center; gap: .2rem; font-size: .62rem; font-weight: 700; padding: .1rem .4rem; border-radius: var(--radius-lg); white-space: nowrap; flex-shrink: 0; }
.meta-chip-quiz  { background: rgba(139,92,246,.1);  color: #a78bfa; }
.meta-chip-notes { background: rgba(16,185,129,.1);  color: #10b981; }
.meta-chip-sheet { background: rgba(245,158,11,.1);  color: #f59e0b; }
.meta-stat i { font-size: .56rem; }

.post-row-right { display: flex; align-items: center; gap: .5rem; flex-shrink: 0; }
.post-row-author { display: flex; align-items: center; gap: .35rem; text-decoration: none; padding: .2rem .4rem; border-radius: var(--radius-sm); transition: background .15s; }
.post-row-author:hover { background: var(--bg-hover, rgba(255,255,255,.06)); }
.post-row-avatar, .post-row-avatar-fallback { width: 22px; height: 22px; border-radius: 50%; object-fit: cover; flex-shrink: 0; border: 1.5px solid var(--border, #2e3244); }
.post-row-avatar-fallback { font-size: .55rem; font-weight: 700; color: white; display: flex; align-items: center; justify-content: center; }
.post-row-author-name { font-size: .7rem; font-weight: 600; color: var(--text-muted, #64748b); white-space: nowrap; }

.badge-paid { background: rgba(245,158,11,.14); color: #f59e0b; font-weight: 700; font-size: .62rem; padding: .1rem .4rem; border-radius: 4px; white-space: nowrap; }
.badge-free { background: rgba(16,185,129,.11); color: #10b981; font-weight: 700; font-size: .62rem; padding: .1rem .4rem; border-radius: 4px; white-space: nowrap; }
.post-chevron { font-size: .58rem; color: var(--text-muted, #64748b); transition: transform .18s; }
.post-row:hover .post-chevron { transform: translateX(2px); }


/* ── Daily upload limit banner ─────────────────────────────── */
.limit-banner {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 10px;
  font-size: 0.9rem;
  margin-bottom: 16px;
}
.limit-banner .material-symbols-outlined {
  font-size: 1.1rem;
  flex-shrink: 0;
}
.limit-banner--warn {
  background: #fffbeb;
  color: #92400e;
  border: 1px solid #fde68a;
}
.limit-banner--empty {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fca5a5;
}
/* ── Stat limit indicators ─────────────────────────────────── */
.hg-stat--limit .hg-stat-val {
  color: #2563eb;
}
.hg-stat--empty .hg-stat-val {
  color: #dc2626;
}
.hg-stat--empty .hg-stat-lbl {
  color: #dc2626;
}

/* ── Referral widget ───────────────────────────────────────── */
.pr-referral-card {
  padding: 16px;
}
.pr-referral-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
}
.pr-referral-icon {
  font-size: 1.6rem;
  flex-shrink: 0;
}
.pr-referral-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text, #0f172a);
  margin-bottom: 2px;
}
.pr-referral-sub {
  font-size: 0.78rem;
  color: #64748b;
}
.pr-referral-link-row {
  display: flex;
  gap: 8px;
  align-items: center;
}
.pr-referral-input {
  flex: 1;
  padding: 8px 12px;
  border: 1.5px solid #e2e8f0;
  border-radius: 9px;
  font-size: 0.78rem;
  color: #475569;
  background: #f8fafc;
  outline: none;
  min-width: 0;
}
.pr-referral-copy {
  flex-shrink: 0;
  padding: 8px 14px;
  background: #2563eb;
  color: white;
  border: none;
  border-radius: 9px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
  white-space: nowrap;
}
.pr-referral-copy:hover {
  background: #1d4ed8;
}
.pr-referral-active {
  margin-top: 10px;
  font-size: 0.8rem;
  color: #065f46;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  border-radius: var(--radius-sm);
  padding: 7px 12px;
}

.pr-referral-count {
  font-size: 0.78rem;
  color: #2563eb;
  margin-top: 4px;
  font-weight: 500;
}

/* ── Dark mode overrides for new classes ── */
[data-theme="dark"] .ks-form-card,
[data-theme="dark"] .ks-prog-card,
[data-theme="dark"] .ks-search-wrap,
[data-theme="dark"] .ks-chip,
[data-theme="dark"] .ks-user-row {
    background: var(--bg-card);
    border-color: var(--border);
}
[data-theme="dark"] .ks-form-input {
    background: #1e293b;
    border-color: var(--border);
    color: var(--text-primary);
}
[data-theme="dark"] .ks-form-input:focus {
    background: #0f172a;
    border-color: var(--primary);
}
[data-theme="dark"] .ks-prog-meta code {
    background: rgba(255,255,255,0.06);
    color: var(--text-muted);
}
[data-theme="dark"] .ks-btn-cancel {
    background: var(--bg-hover);
    border-color: var(--border);
    color: var(--text-secondary);
}
[data-theme="dark"] .ks-act-btn--edit   { background: rgba(37,99,235,.15); }
[data-theme="dark"] .ks-act-btn--toggle { background: rgba(245,158,11,.15); }
[data-theme="dark"] .ks-act-btn--danger { background: rgba(239,68,68,.15); }

/* ── Responsive ── */
@media (max-width: 480px) {
    .ks-form-row { grid-template-columns: 1fr; }
    .ks-prog-actions { gap: 0.375rem; }
    .ks-act-btn { padding: 0.3rem 0.6rem; font-size: 0.73rem; }
    .ks-chips-row { gap: 0.3rem; }
    .ks-chip { padding: 0.3rem 0.6rem; font-size: 0.73rem; }
}


    /* ── Body & base ── */
    [data-theme="dark"] body {
        background: var(--bg-main);
        color: var(--text-primary);
    }

    /* ── Cards ── */
    [data-theme="dark"] .post-card,
    [data-theme="dark"] .user-card,
    [data-theme="dark"] .auth-card,
    [data-theme="dark"] .create-card,
    [data-theme="dark"] .post-detail-card,
    [data-theme="dark"] .comments-section,
    [data-theme="dark"] .edit-card,
    [data-theme="dark"] .checkout-card,
    [data-theme="dark"] .purchase-card,
    [data-theme="dark"] .table-container,
    [data-theme="dark"] .filters-bar,
    [data-theme="dark"] .preview-card {
        background: var(--bg-card);
        border-color: var(--border);
    }

    /* ── Profile header / cover ── */
    [data-theme="dark"] .profile-header {
        background: var(--bg-card);
        border-color: var(--border);
    }

    /* ── Post cards specific ── */
    [data-theme="dark"] .post-card:hover {
        box-shadow: 0 4px 20px rgba(0,0,0,0.4);
    }

    /* ── Titles & text ── */
    [data-theme="dark"] h1,
    [data-theme="dark"] h2,
    [data-theme="dark"] h3,
    [data-theme="dark"] h4,
    [data-theme="dark"] h5,
    [data-theme="dark"] h6 {
        color: var(--text-primary);
    }

    [data-theme="dark"] .post-title,
    [data-theme="dark"] .author-name,
    [data-theme="dark"] .comment-author,
    [data-theme="dark"] .document-title,
    [data-theme="dark"] .dropdown-name,
    [data-theme="dark"] .purchase-doc-name {
        color: var(--text-primary);
    }

    [data-theme="dark"] .post-description,
    [data-theme="dark"] .post-time,
    [data-theme="dark"] .comment-time,
    [data-theme="dark"] .comment-text,
    [data-theme="dark"] .post-subtitle,
    [data-theme="dark"] .text-secondary {
        color: var(--text-secondary);
    }

    /* ── Forms & inputs ── */
    [data-theme="dark"] .form-control,
    [data-theme="dark"] .field-input,
    [data-theme="dark"] .comment-input,
    [data-theme="dark"] .md-textarea,
    [data-theme="dark"] .form-input-modern,
    [data-theme="dark"] input[type="text"],
    [data-theme="dark"] input[type="email"],
    [data-theme="dark"] input[type="password"],
    [data-theme="dark"] input[type="number"],
    [data-theme="dark"] textarea,
    [data-theme="dark"] select {
        border-color: var(--border);
        color: var(--text-primary);
    }

    [data-theme="dark"] .form-control:focus,
    [data-theme="dark"] .field-input:focus,
    [data-theme="dark"] .comment-input:focus,
    [data-theme="dark"] .md-textarea:focus,
    [data-theme="dark"] input:focus,
    [data-theme="dark"] textarea:focus,
    [data-theme="dark"] select:focus {
        background: transparent;
        border-color: var(--text-secondary);
        /* box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2); */
    }

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

    /* ── Buttons ── */
    [data-theme="dark"] .btn-secondary,
    [data-theme="dark"] .nav-btn,
    [data-theme="dark"] .btn-cancel,
    [data-theme="dark"] .page-btn,
    [data-theme="dark"] .back-link {
        background: var(--bg-hover);
        border-color: var(--border);
        color: var(--text-primary);
    }

    [data-theme="dark"] .btn-secondary:hover,
    [data-theme="dark"] .back-link:hover {
        border-color: var(--primary);
        color: var(--primary-light);
        background: rgba(99,102,241,0.1);
    }

    [data-theme="dark"] .action-btn {
        color: var(--text-muted);
    }
    [data-theme="dark"] .action-btn:hover {
        background: var(--bg-hover);
        color: var(--text-primary);
    }
    [data-theme="dark"] .action-btn.liked { color: #f87171; }

    /* ── Document / file badges ── */
    [data-theme="dark"] .document-badge,
    [data-theme="dark"] .document-section,
    [data-theme="dark"] .current-doc-banner {
        background: rgba(99,102,241,0.08);
        border-color: rgba(99,102,241,0.2);
    }

    /* ── Dropdowns / menus ── */
    [data-theme="dark"] .options-menu {
        background: var(--bg-card);
        border-color: var(--border);
    }
    [data-theme="dark"] .options-menu a,
    [data-theme="dark"] .options-menu button {
        color: var(--text-primary);
    }
    [data-theme="dark"] .options-menu a:hover { background: var(--bg-hover); }

    /* ── Borders & dividers ── */
    [data-theme="dark"] .post-actions,
    [data-theme="dark"] .post-actions-bar,
    [data-theme="dark"] .edit-actions,
    [data-theme="dark"] .form-actions,
    [data-theme="dark"] .dropdown-divider,
    [data-theme="dark"] .comments-header,
    [data-theme="dark"] .comment,
    [data-theme="dark"] .profile-stats,
    [data-theme="dark"] .profile-actions,
    [data-theme="dark"] .dropdown-header {
        border-color: var(--border);
    }

    /* ── Section headers with gradient bg ── */
    [data-theme="dark"] .header-content,
    [data-theme="dark"] .posts-header .header-content,
    [data-theme="dark"] .edit-header .header-content,
    [data-theme="dark"] .search-header .header-content,
    [data-theme="dark"] .view-header .header-content {
        background: rgba(99,102,241,0.08);
        border-color: rgba(99,102,241,0.2);
    }

    [data-theme="dark"] .header-text h1,
    [data-theme="dark"] .header-text h2,
    [data-theme="dark"] .header-text p {
        color: var(--text-secondary);
    }
    [data-theme="dark"] .header-text h1,
    [data-theme="dark"] .header-text h2 {
        color: var(--text-primary);
    }

    /* ── Profile bio section ── */
    [data-theme="dark"] .profile-bio-section {
        background: rgba(99,102,241,0.06);
        border-color: rgba(99,102,241,0.2);
    }
    [data-theme="dark"] .profile-bio { color: var(--text-secondary); }
    [data-theme="dark"] .profile-username { color: var(--text-muted); }
    [data-theme="dark"] .profile-name { color: #f1f5f9; }

    /* ── Stats ── */
    [data-theme="dark"] .stat-value { color: var(--text-primary); }
    [data-theme="dark"] .stat-label { color: var(--text-muted); }

    /* ── Empty states ── */
    [data-theme="dark"] .empty-state,
    [data-theme="dark"] .empty-comments,
    [data-theme="dark"] .empty-purchases {
        background: rgba(99,102,241,0.04);
        border-color: rgba(99,102,241,0.15);
    }
    [data-theme="dark"] .empty-state h2,
    [data-theme="dark"] .empty-state h3 { color: var(--text-primary); }
    [data-theme="dark"] .empty-state p  { color: var(--text-muted); }

    /* ── Search page ── */
    [data-theme="dark"] .search-input-wrapper {
        background: var(--bg-card);
        border-color: var(--border);
    }
    [data-theme="dark"] .search-input-wrapper:focus-within {
        border-color: var(--primary);
    }
    [data-theme="dark"] .main-search-input {
        background: transparent;
        color: var(--text-primary);
    }

    /* ── Markdown editor ── */
    [data-theme="dark"] .md-editor-wrapper {
        background: var(--bg-card);
        border-color: var(--border);
    }
    [data-theme="dark"] .md-toolbar,
    [data-theme="dark"] .md-footer {
        background: #0f172a;
        border-color: var(--border);
    }
    [data-theme="dark"] .md-btn {
        color: var(--text-muted);
    }
    [data-theme="dark"] .md-btn:hover {
        background: var(--bg-hover);
        border-color: var(--border);
        color: var(--text-primary);
    }

    /* ── Admin table ── */
    [data-theme="dark"] .data-table thead { border-color: var(--border); }
    [data-theme="dark"] .data-table th   { color: var(--text-muted); }
    [data-theme="dark"] .data-table td   { border-color: var(--border); color: var(--text-secondary); }
    [data-theme="dark"] .data-table tbody tr:hover { background: var(--bg-hover); }

    /* ── Pricing section ── */
    [data-theme="dark"] .pricing-section {
        background: var(--bg-card);
        border-color: var(--border);
    }
    [data-theme="dark"] .pricing-section-header {
        background: rgba(99,102,241,0.06);
        border-color: var(--border);
    }
    [data-theme="dark"] .toggle-track { background: var(--border); }

    /* ── Notice bar ── */
    [data-theme="dark"] .notice-bar {
        background: rgba(239,68,68,0.08);
        border-color: rgba(239,68,68,0.25);
    }

    /* ── Checkout page ── */
    [data-theme="dark"] .checkout-topbar {
        background: rgba(15,23,42,0.95);
        border-color: var(--border);
    }
    [data-theme="dark"] .order-summary { border-color: var(--border); }
    [data-theme="dark"] .summary-row   { color: var(--text-secondary); }
    [data-theme="dark"] .summary-total { color: var(--text-primary); border-color: var(--border); }
    [data-theme="dark"] .doc-preview   { border-color: var(--border); }
    [data-theme="dark"] .benefits      { border-color: var(--border); }
    [data-theme="dark"] .back-to-post  {
        color: var(--text-muted);
        border-color: var(--border);
    }
    [data-theme="dark"] .back-to-post:hover { color: var(--primary-light); }

    /* ── Purchase cards ── */
    [data-theme="dark"] .purchases-header {
        background: rgba(99,102,241,0.08);
        border-color: rgba(99,102,241,0.2);
    }
    [data-theme="dark"] .purchase-meta { color: var(--text-muted); }

    /* ── Login prompt ── */
    [data-theme="dark"] .login-prompt {
        background: rgba(99,102,241,0.06);
        border-color: rgba(99,102,241,0.2);
    }
    [data-theme="dark"] .login-prompt p { color: var(--text-secondary); }

    /* ── Skeleton shimmer ── */
    [data-theme="dark"] .skeleton-card,
    [data-theme="dark"] .skeleton-avatar,
    [data-theme="dark"] .skeleton-line {
        background: var(--bg-hover);
    }

    /* ── Subject filter buttons ── */
    [data-theme="dark"] .subject-btn {
        background: var(--bg-hover);
        color: var(--text-secondary);
    }
    [data-theme="dark"] .subject-btn:hover {
        background: var(--bg-card);
        color: var(--text-primary);
    }

    /* ── Feed sidebar widgets ── */
    [data-theme="dark"] .sidebar-widget,
    [data-theme="dark"] .stats-widget,
    [data-theme="dark"] .xp-widget {
        background: var(--bg-card);
        border-color: var(--border);
    }

    /* ── Onboarding overlay dark mode ── */
    [data-theme="dark"] .ob-overlay { background: rgba(0, 0, 0, 0.85); }
    [data-theme="dark"] .ob-card { background: #171717; border-color: #2C2C2C; }
    [data-theme="dark"] .ob-input { background: #222222; border-color: #2C2C2C; color: #FCF6F5; }
    [data-theme="dark"] .ob-dropdown { background: #1a1a1a; border-color: #2C2C2C; }
    [data-theme="dark"] .ob-dropdown-item { color: #a3a3a3; }
    [data-theme="dark"] .ob-dropdown-item:hover { background: rgba(99, 102, 241, 0.08); color: #FCF6F5; }

    /* ── End of dark mode ── */

    /* ════════════════════════════════════
    ICON DARK MODE FIXES
    ════════════════════════════════════ */

    /* Fix 1: Icon colors inside buttons — use inherit instead of hardcoded white */
    .create-btn i,
    .nav-item.create i {
        color: inherit;
    }

    /* Fix 2: Empty comments icon was #fff (invisible on light bg) */
    .empty-comments i {
        color: var(--text-muted);
        opacity: 0.4;
    }

    /* Fix 3: Sidebar notice icon dark mode */
    [data-theme="dark"] .sidebar-notice i {
        color: #fca5a5;
    }

    /* Fix 4: Danger dropdown item icon dark mode */
    [data-theme="dark"] .dropdown-item--danger i { color: #f87171; }
    [data-theme="dark"] .dropdown-item--danger:hover i { color: #fca5a5; }

    /* Fix 5: Header icon wrapper — use inherit so it follows container */
    .header-icon-wrapper i {
        color: inherit;
    }

    [data-theme="dark"] .search-input {
        background: rgba(255,255,255,0.06);
        border-color: rgba(255,255,255,0.1);
        color: #f9fafb;
    }
    [data-theme="dark"] .search-input:focus {
        background: rgba(255,255,255,0.09);
        border-color: rgba(99,102,241,0.5);
    }
    [data-theme="dark"] .search-form:focus-within .search-icon { color: #a5b4fc; }
/* ════════════════════════════════════════════════════════════
   DESKTOP LAYOUT — all pages extending base.html
   Accurate class names verified from each template.

   Wrapper map:
     index.html          → .home-wrap  (has own grid/styles inline)
     library/*           → .lib-wrap   (has own 1024px rule inline)
     users/profile.html  → .pr-wrap    (has own 640px rule inline)
     users/bookmarks.html→ .home-wrap
     users/search.html   → .home-wrap
     posts/view.html     → .pv-wrap
     posts/create.html   → .cp-shell   (has own 1024px rule inline)
     admin/dashboard.html→ .admin-container
     admin/posts.html    → .ap-page
     admin/moderation.html→.admin-container.mod-page
     admin/users.html    → .admin-container
     payments/checkout   → .checkout-page
     payments/purchases  → .purchases-container
   ════════════════════════════════════════════════════════════ */

/* ── Shared: content containers get centered with comfortable padding ── */
@media (min-width: 768px) {
    .home-wrap {
        max-width: 960px;
        margin: 0 auto;
        padding: 1.5rem 2rem;
    }

    .pr-wrap {
        max-width: 820px;
        margin: 0 auto;
        padding: 1.5rem 2rem 3rem;
    }

    .pv-wrap {
        max-width: 700px;
        margin: 0 auto;
        padding: 1.5rem 2rem;
    }

    .admin-container {
        max-width: 1100px;
        margin: 0 auto;
        padding: 1.5rem 2rem;
    }

    .ap-page {
        max-width: 1200px;
        margin: 0 auto;
        padding: 1.5rem 2rem;
    }

    .checkout-page {
        max-width: 860px;
        margin: 0 auto;
        padding: 1.5rem 2rem;
    }

    .purchases-container {
        max-width: 860px;
        margin: 0 auto;
        padding: 1.5rem 2rem;
    }

    /* ── Nav ── */
    .top-nav .nav-content { padding: 0.875rem 2rem; }
    .search-container { max-width: 520px; }
}

/* ── Desktop (1024px+) ── */
@media (min-width: 1024px) {
    .top-nav .nav-content { padding: 0.875rem 3rem; }
    .search-container { max-width: 600px; }

    .home-wrap {
        max-width: 1160px;
        padding: 2rem 3rem 3rem;
    }

    /* lib-wrap already has its own inline 1024px rule (padding only).
       We boost max-width here without conflicting. */
    .lib-wrap {
        max-width: 1160px;
        margin: 0 auto;
    }

    .pr-wrap {
        max-width: 900px;
        padding: 2rem 3rem 3rem;
    }

    .pv-wrap {
        max-width: 720px;
        padding: 2rem 3rem;
    }

    .ep-wrap {
        max-width: 900px;
        padding: 2rem 3rem 3rem;
    }

    .admin-container {
        max-width: 1200px;
        padding: 2rem 3rem;
    }

    .ap-page {
        max-width: 1300px;
        padding: 2rem 3rem;
    }

    .checkout-page {
        max-width: 960px;
        padding: 2rem 3rem;
    }

    .purchases-container {
        max-width: 960px;
        padding: 2rem 3rem;
    }

    /* ── Subject page: tabs become a vertical sidebar ── */
    .subj-layout {
        display: flex;
        flex-direction: row;
        align-items: flex-start;
        gap: 1.25rem;
    }
    .subj-tabs-wrap {
        flex-direction: column;
        overflow-x: visible;
        flex-shrink: 0;
        width: 150px;
        padding-bottom: 0;
        gap: 0.25rem;
        position: sticky;
        top: 76px;
        flex: 1;
    }

    .subj-panel {
        margin-top: auto;
        flex: 6;
    }


    /* ── Admin programme grid → 2 columns ── */
    .ks-prog-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    /* ── Wider modal on desktop ── */
    .content-modal-content { max-width: 520px; }

    /* ── Prevent body text lines from getting too wide ── */
    .post-description,
    .profile-bio,
    .cb-paragraph { max-width: 68ch; }
}

/* ── Wide desktop (1280px+) ── */
@media (min-width: 1280px) {
    .top-nav .nav-content { padding: 0.875rem 4rem; }

    .home-wrap {
        max-width: 1200px;
        padding: 2rem 4rem 3rem;
    }

    .lib-wrap {
        max-width: 1200px;
    }

    .admin-container,
    .ap-page {
        max-width: 1400px;
        padding: 2rem 4rem;
    }

    .ks-prog-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ════════════════════════════════════════════════════════════
   DESKTOP RESPONSIVE — ADDITIONS
   Appended after existing desktop block.
   No overwrites — only additive rules for wrappers and
   page-specific layouts not covered above.
   ════════════════════════════════════════════════════════════ */

/* ── 768px: tablet baseline ── */
@media (min-width: 768px) {

    /* Explore page */
    .ex-root {
        max-width: 860px;
        margin: 0 auto;
        padding: 1.5rem 2rem 3rem;
    }

    /* Notes viewer */
    .nv-body {
        max-width: 820px;
        margin: 0 auto;
        padding: 1.5rem 2rem 3rem;
    }

    /* Cheatsheet viewer */
    .cs-wrap {
        max-width: 960px;
        padding: 1.5rem 2rem 3rem;
    }

    /* Post view (generic) */
    .pv-wrap {
        max-width: 780px;
        padding: 1.5rem 2rem 3rem;
    }

    /* Profile */
    .pr-wrap {
        max-width: 820px;
        padding: 1.5rem 2rem 3rem;
    }

    /* Library */
    .lib-wrap {
        max-width: 900px;
        padding: 1.5rem 2rem 3rem;
    }

    /* Subject page */
    .subj-wrap {
        max-width: 960px;
        margin: 0 auto;
        padding: 1.5rem 2rem 3rem;
    }

    /* Auth pages */
    .auth-wrap {
        max-width: 480px;
        margin: 2rem auto;
        padding: 0 1.5rem;
    }

    /* Payments */
    .checkout-page,
    .purchases-container {
        padding: 1.5rem 2rem;
    }

    /* Onboarding */
    .onboarding-wrap {
        max-width: 560px;
        margin: 2rem auto;
        padding: 0 2rem;
    }

    /* Post create/edit */
    .cp-shell,
    .ep-wrap {
        max-width: 820px;
        padding: 1.5rem 2rem 3rem;
    }

    /* Users search */
    .users-search-wrap {
        max-width: 960px;
        margin: 0 auto;
        padding: 1.5rem 2rem 3rem;
    }

    /* Posts grid: 2 columns at tablet */
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Users grid: 3 columns at tablet */
    .users-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Notes topbar: sticky below nav */
    .nv-topbar {
        top: 62px;
    }

    /* Cheatsheet topbar: sticky below nav */
    .cs-topbar {
        top: 62px;
    }
}

/* ── 1024px: desktop ── */
@media (min-width: 1024px) {

    /* Explore page */
    .ex-root {
        max-width: 920px;
        padding: 2rem 3rem 3rem;
    }

    /* Notes viewer: wider reading column + sticky TOC sidebar */
    .nv-body {
        max-width: 1100px;
        padding: 2rem 3rem 3rem;
    }
    .nv-layout {
        display: grid;
        grid-template-columns: 220px 1fr;
        gap: 2rem;
        align-items: start;
    }
    .nv-toc-col {
        position: sticky;
        top: 110px;
        max-height: calc(100vh - 130px);
        overflow-y: auto;
        scrollbar-width: thin;
    }

    /* Cheatsheet viewer */
    .cs-wrap {
        max-width: 1100px;
        padding: 2rem 3rem 3rem;
    }

    /* Profile: wider */
    .pr-wrap {
        max-width: 920px;
        padding: 2rem 3rem 3rem;
    }

    /* Library */
    .lib-wrap {
        max-width: 1100px;
        padding: 2rem 3rem 3rem;
    }

    /* Subject page */
    .subj-wrap {
        max-width: 1100px;
        padding: 2rem 3rem 3rem;
    }

    /* Post view */
    .pv-wrap {
        max-width: 820px;
        padding: 2rem 3rem 3rem;
    }

    /* Post create/edit */
    .cp-shell,
    .ep-wrap {
        max-width: 900px;
        padding: 2rem 3rem 3rem;
    }

    /* Users search */
    .users-search-wrap {
        max-width: 1100px;
        padding: 2rem 3rem 3rem;
    }

    /* Users grid: 4 columns */
    .users-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    /* Profile: stats row becomes horizontal */
    .pr-stats {
        flex-direction: row;
        gap: 1.5rem;
    }

    /* Profile: two-column layout for posts + sidebar */
    .pr-content-grid {
        display: grid;
        grid-template-columns: 1fr 280px;
        gap: 1.5rem;
        align-items: start;
    }
    .pr-sidebar {
        position: sticky;
        top: 90px;
    }

    /* Explore: slightly wider post panel */
    .ex-panel {
        border-radius: var(--radius-lg);
    }

    /* Nav: comfortable padding */
    .top-nav .nav-content {
        padding: 0.875rem 3rem;
    }

    /* Search bar wider */
    .search-container {
        max-width: 640px;
    }

    /* Post rows in explore: show avatar always */
    .ex-post-avatar,
    .ex-avatar {
        display: block !important;
    }
}

/* ── 1280px: wide desktop ── */
@media (min-width: 1280px) {

    /* Explore */
    .ex-root {
        max-width: 1000px;
        padding: 2rem 4rem 3rem;
    }

    /* Notes: wider layout */
    .nv-body {
        max-width: 1200px;
        padding: 2rem 4rem 3rem;
    }
    .nv-layout {
        grid-template-columns: 240px 1fr;
        gap: 2.5rem;
    }

    /* Cheatsheet */
    .cs-wrap {
        max-width: 1200px;
        padding: 2rem 4rem 3rem;
    }

    /* Profile */
    .pr-wrap {
        max-width: 1000px;
        padding: 2rem 4rem 3rem;
    }
    .pr-content-grid {
        grid-template-columns: 1fr 300px;
    }

    /* Library */
    .lib-wrap {
        max-width: 1200px;
        padding: 2rem 4rem 3rem;
    }

    /* Subject page */
    .subj-wrap {
        max-width: 1200px;
        padding: 2rem 4rem 3rem;
    }

    /* Post view */
    .pv-wrap {
        max-width: 860px;
        padding: 2rem 4rem 3rem;
    }

    /* Create/edit */
    .cp-shell,
    .ep-wrap {
        max-width: 980px;
        padding: 2rem 4rem 3rem;
    }

    /* Users search */
    .users-search-wrap {
        max-width: 1200px;
        padding: 2rem 4rem 3rem;
    }

    /* Users grid: 5 columns on very wide screens */
    .users-grid {
        grid-template-columns: repeat(5, 1fr);
    }

    /* Nav padding */
    .top-nav .nav-content {
        padding: 0.875rem 4rem;
    }
}

/* ── Desktop: hide mobile-only elements ── */
@media (min-width: 768px) {
    .mobile-only,
    .mobile-nav-right {
        display: none !important;
    }
    
    .desktop-flex {
        display: flex !important;
    }

    /* Notification dropdown: better position on desktop */
    .notif-dropdown {
        right: 0;
        left: auto;
        width: 320px;
    }

    /* Dropdowns anchor properly */
    .dropdown-menu {
        position: absolute;
        top: 100%;
        right: 0;
        min-width: 180px;
    }
}

/* Studley cursor utility classes */
.default_cursor_cs { cursor: default; }
.default_pointer_cs { cursor: pointer; }