/* ── Discover page ── */
.disc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: var(--spacing-lg);
}

.disc-header-text h1 {
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 0 0 4px;
}

.disc-header-text p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin: 0;
}

/* ── Type toggle (All / Packs / Quizzes) ── */
.disc-type-toggle {
  display: flex;
  gap: 2px;
  padding: 3px;
  border-radius: 10px;
  background: var(--bg-surface, var(--bg-card));
  width: fit-content;
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.disc-type-btn {
  padding: 6px 16px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s;
  font-family: var(--font-body);
}

.disc-type-btn:hover {
  color: var(--text-primary);
}

.disc-type-btn--active {
  background: var(--primary);
  color: #fff;
}

.disc-type-btn--active:hover {
  color: #fff;
  opacity: 0.92;
}

/* ── Filter row (chips + toggle on same row) ── */
.disc-filter-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.disc-subjects {
  flex: 1;
  min-width: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 0 0 4px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.disc-subjects::-webkit-scrollbar { display: none; }

.disc-subject-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  flex-shrink: 0;
  font-family: var(--font-body);
}

.disc-subject-chip:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.disc-subject-chip:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.disc-subject-chip--active {
  color: #fff;
  border-color: var(--primary);
  background: var(--primary);
}

.disc-subject-chip--active:hover {
  opacity: 0.9;
  color: #fff;
}

/* ── View toggle button ── */
.view-toggle-btn {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.view-toggle-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

@media (max-width: 640px) {
  .disc-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
  .view-toggle-btn {
    display: none;
  }
}

@media (max-width: 640px) {
  #discGrid {
    display: flex !important;
    flex-direction: column !important;
    grid-template-columns: unset !important;
    gap: 0 !important;
    width: 100%;
    box-sizing: border-box;
  }
  #discGrid .pack-card {
    background: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    overflow: visible !important;
    animation: none !important;
  }
  #discGrid .pack-card::before {
    display: none !important;
  }
  #discGrid .pack-card .pack-cover,
  #discGrid .pack-card .pack-desktop-title,
  #discGrid .pack-card .pack-mastery-inline,
  #discGrid .pack-card .pack-footer,
  #discGrid .pack-card .pack-body,
  #discGrid .pack-card .pack-header,
  #discGrid .pack-card .pack-tile-overlay {
    display: none !important;
  }
  #discGrid .pack-card .pack-mobile {
    display: flex !important;
  }
  #discGrid .pack-card-real {
    border-bottom: 0.5px solid var(--border);
  }
  #discGrid .pack-card-real:last-child {
    border-bottom: none;
  }
}

/* ── Empty state ── */
.disc-empty {
  width: 100%;
  min-height: 50vh;
  padding: var(--spacing-xl) var(--spacing-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  text-align: center;
  background: transparent;
  border-radius: 14px;
}

.disc-empty-icon {
  color: var(--text-muted);
}

.disc-empty-title {
  margin: 4px 0 0;
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
}

.disc-empty-body {
  margin: 0;
  color: var(--text-secondary);
  font-size: var(--text-sm);
  max-width: 360px;
  line-height: 1.5;
}