/* ==============================================================================
   Sources Web Portal: High-Aesthetic Responsive Design System
   Dual Theme (Dark Glassmorphism & Crisp Light) + Full Device Adaptation
   ============================================================================== */

:root {
  /* Common Palette */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Outfit', var(--font-sans);

  --color-primary: #3b82f6;
  --color-primary-hover: #2563eb;
  --color-primary-glow: rgba(59, 130, 246, 0.25);

  --color-score-high: #10b981;
  --color-score-mid: #06b6d4;
  --color-score-fair: #f59e0b;
  --color-danger: #ef4444;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Dark Theme (Default) */
[data-theme="dark"] {
  --bg-app: #090c15;
  --bg-surface: rgba(18, 24, 38, 0.75);
  --bg-surface-hover: rgba(26, 34, 54, 0.85);
  --bg-surface-solid: #121826;
  --bg-card: rgba(15, 20, 32, 0.65);
  --bg-input: rgba(10, 14, 24, 0.6);
  --bg-modal: rgba(15, 21, 35, 0.92);

  --text-main: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(255, 255, 255, 0.15);
  --glass-shadow: 0 16px 36px -8px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.06);

  --badge-bg: rgba(255, 255, 255, 0.06);
  --backdrop-blur: blur(20px);
}

/* Light Theme */
[data-theme="light"] {
  --bg-app: #f8fafc;
  --bg-surface: rgba(255, 255, 255, 0.85);
  --bg-surface-hover: rgba(241, 245, 249, 0.95);
  --bg-surface-solid: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.8);
  --bg-input: rgba(241, 245, 249, 0.9);
  --bg-modal: rgba(255, 255, 255, 0.96);

  --text-main: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --border-subtle: rgba(0, 0, 0, 0.06);
  --border-highlight: rgba(0, 0, 0, 0.12);
  --glass-shadow: 0 12px 30px -6px rgba(0, 0, 0, 0.08), 0 0 0 1px rgba(0, 0, 0, 0.04);

  --badge-bg: rgba(0, 0, 0, 0.04);
  --backdrop-blur: blur(20px);
}

/* Base Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-app);
  color: var(--text-main);
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  line-height: 1.5;
}

/* ==============================================================================
   1. Disguise Screen (Bing Wallpaper / Windows Spotlight)
   ============================================================================== */
#disguise-view {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  z-index: 1000;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 2.5rem;
  transition: opacity var(--transition-smooth), transform var(--transition-smooth);
  user-select: none;
}

#disguise-view.hidden {
  opacity: 0;
  pointer-events: none;
  transform: scale(1.03);
}

.disguise-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(0,0,0,0.15) 0%, rgba(0,0,0,0.55) 100%);
  z-index: 1;
}

.disguise-clock-wrapper {
  position: relative;
  z-index: 2;
  margin: auto;
  text-align: center;
  padding: 2rem 3rem;
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.disguise-clock-wrapper:active {
  transform: scale(0.98);
}

.disguise-time {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 9vw, 6rem);
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -2px;
  line-height: 1;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.disguise-date {
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  font-weight: 400;
  color: rgba(255, 255, 255, 0.85);
  margin-top: 0.6rem;
  letter-spacing: 0.5px;
}

.disguise-hint {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.45);
  margin-top: 1rem;
  letter-spacing: 1px;
}

.disguise-footer {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
}

.disguise-credit {
  max-width: 60%;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.6);
}

/* ==============================================================================
   2. Main Resource Portal Layout
   ============================================================================== */
#portal-view {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: opacity var(--transition-smooth);
}

#portal-view.hidden {
  display: none;
}

/* Header */
.portal-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-surface);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  user-select: none;
}

.brand-logo {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1.15rem;
  box-shadow: 0 4px 12px var(--color-primary-glow);
}

.brand-text h1 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.brand-text p {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.action-btn {
  background: var(--badge-bg);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.action-btn:hover {
  background: var(--bg-surface-hover);
  color: var(--text-main);
  border-color: var(--border-highlight);
}

.btn-icon-only {
  padding: 0.55rem;
  border-radius: var(--radius-md);
}

.badge-admin-status {
  background: rgba(16, 185, 129, 0.15);
  color: var(--color-score-high);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.badge-admin-status:hover {
  background: rgba(239, 68, 68, 0.15);
  color: var(--color-danger);
  border-color: rgba(239, 68, 68, 0.3);
}

/* Hero & Search Controls */
.portal-hero {
  padding: 2.2rem 1.5rem 1rem;
  max-width: 1380px;
  margin: 0 auto;
  width: 100%;
}

.search-filter-card {
  background: var(--bg-card);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--glass-shadow);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.search-row {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.search-input-wrapper {
  position: relative;
  flex: 1;
}

.search-input-wrapper svg {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.75rem;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  color: var(--text-main);
  outline: none;
  transition: all var(--transition-fast);
}

.search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.filter-pills {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-pill {
  background: var(--badge-bg);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  padding: 0.4rem 0.9rem;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.filter-pill:hover {
  background: var(--bg-surface-hover);
  color: var(--text-main);
}

.filter-pill.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px var(--color-primary-glow);
}

/* Category Tabs */
.category-tabs-wrapper {
  max-width: 1380px;
  margin: 0 auto;
  padding: 0.5rem 1.5rem 1rem;
  width: 100%;
}

.category-tabs {
  display: flex;
  gap: 0.6rem;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 0.25rem;
}

.category-tabs::-webkit-scrollbar {
  display: none;
}

.cat-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 1.1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
  user-select: none;
}

.cat-tab:hover {
  background: var(--bg-surface-hover);
  color: var(--text-main);
  border-color: var(--border-highlight);
}

.cat-tab.active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px var(--color-primary-glow);
}

.cat-tab .tab-count {
  font-size: 0.75rem;
  padding: 0.15rem 0.45rem;
  background: rgba(0, 0, 0, 0.15);
  border-radius: var(--radius-full);
}

.cat-tab.active .tab-count {
  background: rgba(255, 255, 255, 0.25);
  color: #fff;
}

/* Tag Pool */
.tag-pool-wrapper {
  max-width: 1380px;
  margin: 0 auto;
  padding: 0 1.5rem 1.25rem;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tag-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.tag-chip {
  font-size: 0.76rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  background: var(--badge-bg);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tag-chip:hover, .tag-chip.active {
  background: rgba(59, 130, 246, 0.15);
  color: var(--color-primary);
  border-color: rgba(59, 130, 246, 0.3);
}

/* ==============================================================================
   3. Card Grid & Category Treatments
   ============================================================================== */
.portal-content {
  max-width: 1380px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
  width: 100%;
  flex: 1;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

/* Image Category Specific View: Masonry/Gallery */
.cards-grid.gallery-mode {
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

/* Single Resource Card */
.resource-card {
  background: var(--bg-card);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--glass-shadow);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  position: relative;
}

.resource-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.card-media {
  position: relative;
  width: 100%;
  height: 200px;
  background: rgba(0, 0, 0, 0.2);
  overflow: hidden;
  cursor: pointer;
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.resource-card:hover .card-media img {
  transform: scale(1.05);
}

.card-media-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  background: linear-gradient(135deg, rgba(59,130,246,0.1), rgba(139,92,246,0.1));
}

.card-badge-score {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  backdrop-filter: blur(8px);
}

.score-high {
  background: rgba(16, 185, 129, 0.9);
  color: #fff;
}

.score-mid {
  background: rgba(6, 182, 212, 0.9);
  color: #fff;
}

.score-fair {
  background: rgba(245, 158, 11, 0.9);
  color: #fff;
}

.card-cat-badge {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
}

.card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 0.4rem;
  color: var(--text-main);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-orig-title {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-summary {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 0.85rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.card-tag {
  font-size: 0.72rem;
  padding: 0.15rem 0.5rem;
  background: var(--badge-bg);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

.card-tag-add {
  cursor: pointer;
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-primary);
  border: 1px dashed rgba(59, 130, 246, 0.4);
}

/* Card Actions */
.card-actions {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border-subtle);
  flex-wrap: wrap;
}

.btn-card {
  flex: 1;
  padding: 0.5rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  color: var(--text-main);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  transition: all var(--transition-fast);
}

.btn-card:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn-card-secondary {
  flex: 0 0 auto;
  padding: 0.5rem;
}

.btn-delete-card {
  color: var(--color-danger);
  border-color: rgba(239, 68, 68, 0.2);
}

.btn-delete-card:hover {
  background: var(--color-danger);
  color: #fff;
  border-color: var(--color-danger);
}

/* Image Mode Card */
.gallery-card {
  border-radius: var(--radius-md);
}

.gallery-card .card-media {
  height: 280px;
}

.gallery-card .card-body {
  padding: 0.85rem;
}

.gallery-card .card-title {
  font-size: 0.92rem;
  -webkit-line-clamp: 1;
  line-clamp: 1;
}

/* Audio Player Card Section */
.card-audio-player {
  background: var(--bg-input);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.85rem;
  margin-bottom: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.btn-audio-play {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.audio-track-info {
  flex: 1;
  overflow: hidden;
}

.audio-progress-bar {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  margin-top: 0.3rem;
  position: relative;
  cursor: pointer;
}

.audio-progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  width: 0%;
}

/* ==============================================================================
   4. Modals (Auth, Reader, Lightbox, Admin)
   ============================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--bg-modal);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
  width: 100%;
  max-width: 440px;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.modal-backdrop.open .modal-content {
  transform: scale(1);
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
}

.btn-close-modal {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-close-modal:hover {
  color: var(--text-main);
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: flex-end;
  gap: 0.6rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input {
  padding: 0.75rem 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 0.92rem;
  outline: none;
  width: 100%;
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

/* Reader Modal (Expanded) */
.modal-reader {
  max-width: 900px;
  height: 85vh;
  display: flex;
  flex-direction: column;
}

.reader-toolbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.reader-theme-btn {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  cursor: pointer;
}

.theme-btn-dark { background: #121826; border-color: rgba(255,255,255,0.3); }
.theme-btn-sepia { background: #fbf0d9; }
.theme-btn-light { background: #ffffff; border-color: rgba(0,0,0,0.2); }

.reader-body {
  flex: 1;
  overflow-y: auto;
  padding: 2.5rem;
  font-size: 1.1rem;
  line-height: 1.85;
}

/* Reader Themes */
.reader-mode-dark {
  background: #0f1422;
  color: #e2e8f0;
}

.reader-mode-sepia {
  background: #f7f1e3;
  color: #4a3e36;
}

.reader-mode-light {
  background: #ffffff;
  color: #1e293b;
}

/* Lightbox Modal */
.lightbox-content {
  background: transparent;
  border: none;
  max-width: 95vw;
  max-height: 95vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.lightbox-image-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 90vw;
  max-height: 80vh;
}

.lightbox-image {
  max-width: 100%;
  max-height: 80vh;
  border-radius: var(--radius-md);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8);
  object-fit: contain;
}

.lightbox-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: all var(--transition-fast);
}

.lightbox-nav-btn:hover {
  background: rgba(0, 0, 0, 0.8);
  transform: translateY(-50%) scale(1.1);
}

.lightbox-prev { left: -60px; }
.lightbox-next { right: -60px; }

.lightbox-info {
  margin-top: 1rem;
  color: #fff;
  text-align: center;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
}

/* Admin Panel Modal (Tabs) */
.modal-admin-panel {
  max-width: 780px;
  height: 80vh;
  display: flex;
  flex-direction: column;
}

.admin-nav-tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
  padding: 0 1.5rem;
}

.admin-tab-btn {
  padding: 0.75rem 1rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
}

.admin-tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.admin-tab-content {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.admin-table th, .admin-table td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

.admin-table th {
  color: var(--text-muted);
  font-weight: 600;
}

/* ==============================================================================
   5. Mobile & Tablet Responsiveness
   ============================================================================== */
@media (max-width: 768px) {
  #disguise-view {
    padding: 1.5rem;
  }

  .disguise-clock-wrapper {
    padding: 1.5rem 2rem;
  }

  .disguise-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .disguise-credit {
    max-width: 100%;
  }

  .portal-header {
    padding: 0.75rem 1rem;
  }

  .portal-hero, .category-tabs-wrapper, .tag-pool-wrapper, .portal-content {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .cards-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .cards-grid.gallery-mode {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  }

  .gallery-card .card-media {
    height: 200px;
  }

  .lightbox-prev { left: 10px; }
  .lightbox-next { right: 10px; }

  .modal-reader, .modal-admin-panel {
    height: 95vh;
    padding: 0;
  }
}

/* ==============================================================================
   6. Infinite Scroll & Back to Top Polish
   ============================================================================== */
.scroll-sentinel {
  width: 100%;
  padding: 2.5rem 1rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-highlight);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(12px);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  z-index: 90;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: opacity var(--transition-normal), transform var(--transition-normal), background var(--transition-fast);
}

.btn-back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.btn-back-to-top:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

@keyframes cardEntrance {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.resource-card {
  animation: cardEntrance 0.35s cubic-bezier(0.16, 1, 0.3, 1) both;
}