/* ==========================================================================
   David Rowland Multi-Media Portfolio — Design System
   Vanilla CSS3 with CSS Custom Properties, Fluid Typography & em Breakpoints
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens & Theme Variables
   -------------------------------------------------------------------------- */
:root {
  /* Brand Accents */
  --color-primary: #6366f1;          /* Indigo accent */
  --color-primary-hover: #4f46e5;
  --color-primary-light: #eef2ff;
  --color-primary-border: #c7d2fe;
  --color-primary-glow: rgba(99, 102, 241, 0.28);

  /* Discipline Palette */
  --color-music: #8b5cf6;            /* Violet */
  --color-music-light: #f5f3ff;
  --color-music-border: #ddd6fe;

  --color-software: #0284c7;         /* Sky Blue */
  --color-software-light: #f0f9ff;
  --color-software-border: #bae6fd;

  --color-writing: #d97706;          /* Amber */
  --color-writing-light: #fffbeb;
  --color-writing-border: #fde68a;

  --color-art: #e11d48;              /* Rose */
  --color-art-light: #fff1f2;
  --color-art-border: #fecdd3;

  --color-video: #059669;            /* Emerald */
  --color-video-light: #ecfdf5;
  --color-video-border: #a7f3d0;

  /* Neutrals (Light Theme Default) */
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --bg-subtle: #f1f5f9;
  --bg-input: #ffffff;
  --border: #e2e8f0;
  --border-hover: #cbd5e1;

  /* Typography Colors */
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-subtle: #94a3b8;
  --text-inverted: #ffffff;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 12px -2px rgba(15, 23, 42, 0.08), 0 2px 4px -1px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 28px -4px rgba(15, 23, 42, 0.12), 0 4px 10px -2px rgba(15, 23, 42, 0.06);
  --shadow-glow: 0 0 20px var(--color-primary-glow);

  /* Typography Stacks */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Charter", "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  /* Header & Navigation Metrics */
  --header-height: 60px;
}

/* Dark Theme Overrides */
[data-theme="dark"] {
  color-scheme: dark;

  --color-primary: #818cf8;
  --color-primary-hover: #a5b4fc;
  --color-primary-light: rgba(99, 102, 241, 0.18);
  --color-primary-border: rgba(129, 140, 248, 0.35);
  --color-primary-glow: rgba(129, 140, 248, 0.35);

  --color-music: #a78bfa;
  --color-music-light: rgba(139, 92, 246, 0.16);
  --color-music-border: rgba(167, 139, 250, 0.35);

  --color-software: #38bdf8;
  --color-software-light: rgba(2, 132, 199, 0.16);
  --color-software-border: rgba(56, 189, 248, 0.35);

  --color-writing: #fbbf24;
  --color-writing-light: rgba(217, 119, 6, 0.16);
  --color-writing-border: rgba(251, 191, 36, 0.35);

  --color-art: #fb7185;
  --color-art-light: rgba(225, 29, 72, 0.16);
  --color-art-border: rgba(251, 113, 133, 0.35);

  --color-video: #34d399;
  --color-video-light: rgba(5, 150, 105, 0.16);
  --color-video-border: rgba(52, 211, 153, 0.35);

  --bg-page: #0b0f19;
  --bg-card: #111827;
  --bg-subtle: #1e293b;
  --bg-input: #0f172a;
  --border: #1f293d;
  --border-hover: #334155;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-subtle: #64748b;
  --text-inverted: #ffffff;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 16px -2px rgba(0, 0, 0, 0.5), 0 2px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 14px 32px -4px rgba(0, 0, 0, 0.7), 0 6px 14px -3px rgba(0, 0, 0, 0.4);
}

/* --------------------------------------------------------------------------
   2. Reset, Base & Layout
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.25s ease, color 0.25s ease;
}

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

.skip-link {
  position: absolute;
  top: -9999px;
  left: 20px;
  background: var(--color-primary);
  color: var(--text-inverted);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  z-index: 1000;
  text-decoration: none;
  font-weight: 700;
}
.skip-link:focus {
  top: 10px;
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
}

/* --------------------------------------------------------------------------
   3. Site Header & Sticky Navigation
   -------------------------------------------------------------------------- */
header.site-header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: var(--header-height);
  padding: 8px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-main);
  flex-shrink: 0;
}

.brand-monogram {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), #a855f7);
  color: #ffffff;
  font-weight: 900;
  font-size: 0.95rem;
  letter-spacing: -0.03em;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px var(--color-primary-glow);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.brand-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
}

.brand-tag {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border: 1px solid var(--color-primary-border);
  font-size: 0.7rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.discipline-nav {
  display: flex;
  align-items: center;
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: color 0.15s, background-color 0.15s;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.btn-collection {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 34px;
  padding: 0 12px;
  border-radius: var(--radius-full);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--text-main);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-collection:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.badge-collection {
  background: var(--color-primary);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 1px 6px;
  border-radius: var(--radius-full);
  min-width: 18px;
  text-align: center;
}

.view-switcher {
  display: inline-flex;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2px;
  gap: 2px;
}

.btn-switcher {
  background: transparent;
  border: none;
  color: var(--text-muted);
  width: 30px;
  height: 30px;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: background 0.15s, color 0.15s;
}

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

.btn-switcher.active {
  background: var(--bg-card);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  font-weight: 700;
}

.btn-theme-toggle {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  transition: border-color 0.15s, background-color 0.15s, transform 0.15s;
}

.btn-theme-toggle:hover {
  border-color: var(--color-primary);
  transform: rotate(15deg);
}

/* --------------------------------------------------------------------------
   4. Hero Section
   -------------------------------------------------------------------------- */
.hero {
  padding: clamp(36px, 6vw, 64px) 0 clamp(28px, 4vw, 44px);
  background: radial-gradient(circle at 80% 20%, var(--color-primary-light) 0%, transparent 55%), var(--bg-page);
  border-bottom: 1px solid var(--border);
}

.hero-layout {
  display: flex;
  align-items: center;
  gap: clamp(24px, 4vw, 48px);
}

.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.hero-avatar {
  width: clamp(100px, 14vw, 140px);
  height: clamp(100px, 14vw, 140px);
  border-radius: 24px;
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 40%, #4338ca 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid var(--color-primary);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.avatar-text {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 900;
  color: #ffffff;
  letter-spacing: -0.04em;
}

.hero-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: var(--color-video);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--color-video);
}

.hero-content {
  flex: 1;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.hero-title {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.hero-bio {
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 680px;
  margin-bottom: 20px;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 24px;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 1.45rem;
  font-weight: 900;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.76rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* --------------------------------------------------------------------------
   5. Buttons & Badges
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  text-decoration: none;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  line-height: 1.2;
}

.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 2px 8px var(--color-primary-glow);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
}

.btn-secondary {
  background: var(--bg-subtle);
  border-color: var(--border);
  color: var(--text-main);
}
.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text-main);
}
.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.btn-subtle {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.btn-subtle:hover {
  color: var(--text-main);
  border-color: var(--border-hover);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.8rem;
  border-radius: 6px;
}

/* Discipline Badges */
.discipline-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-music {
  background: var(--color-music-light);
  color: var(--color-music);
  border: 1px solid var(--color-music-border);
}
.badge-software {
  background: var(--color-software-light);
  color: var(--color-software);
  border: 1px solid var(--color-software-border);
}
.badge-writing {
  background: var(--color-writing-light);
  color: var(--color-writing);
  border: 1px solid var(--color-writing-border);
}
.badge-art {
  background: var(--color-art-light);
  color: var(--color-art);
  border: 1px solid var(--color-art-border);
}
.badge-video {
  background: var(--color-video-light);
  color: var(--color-video);
  border: 1px solid var(--color-video-border);
}

.badge-accent {
  background: rgba(99, 102, 241, 0.15);
  color: var(--color-primary);
  border: 1px solid var(--color-primary-border);
}

/* --------------------------------------------------------------------------
   6. Filter Bar & Empty State
   -------------------------------------------------------------------------- */
.filter-section {
  padding: 16px 0;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: var(--header-height);
  z-index: 90;
}

.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  overflow-x: auto;
  scrollbar-width: none;
}
.filter-bar::-webkit-scrollbar {
  display: none;
}

.filter-tabs {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.filter-tab {
  background: transparent;
  border: 1px solid transparent;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

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

.filter-tab.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-color: var(--color-primary-border);
}

.filter-tab-collection {
  color: var(--color-writing);
}

.filter-tab-collection.active {
  background: var(--color-writing-light);
  color: var(--color-writing);
  border-color: var(--color-writing-border);
}

.btn-clear-collection {
  background: transparent;
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
}
.btn-clear-collection:hover {
  color: #ef4444;
  border-color: #fca5a5;
}

.empty-state {
  text-align: center;
  padding: 50px 20px;
  background: var(--bg-card);
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  margin: 32px 0;
}

.empty-state-icon {
  font-size: 2.8rem;
  color: var(--color-writing);
  margin-bottom: 12px;
}

.empty-state-title {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.empty-state-desc {
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto 20px;
  font-size: 0.95rem;
}

/* --------------------------------------------------------------------------
   7. Discipline Sections & Section Headers
   -------------------------------------------------------------------------- */
.discipline-section {
  padding: 56px 0;
  border-bottom: 1px solid var(--border);
}

.section-header {
  margin-bottom: 28px;
}

.section-badge-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.discipline-count-label {
  font-size: 0.78rem;
  color: var(--text-subtle);
  font-weight: 700;
  text-transform: uppercase;
}

.section-title {
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 680px;
  line-height: 1.55;
}

/* --------------------------------------------------------------------------
   8. Display Modes: Grid, List, Focus
   -------------------------------------------------------------------------- */

/* MODE 1: CARD GRID MODE (Default) */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
  gap: 24px;
  margin-top: 24px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr));
  gap: 20px;
  margin-top: 24px;
}

.portfolio-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  position: relative;
}

.portfolio-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-hover);
}

.card-media {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--bg-subtle);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-thumb,
.art-thumbnail-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.portfolio-card:hover .card-thumb,
.portfolio-card:hover .art-thumbnail-img {
  transform: scale(1.03);
}

.card-bookmark-btn,
.bookmark-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  transition: all 0.15s ease;
  z-index: 2;
}

.card-bookmark-btn:hover,
.bookmark-btn:hover {
  background: var(--color-writing);
  transform: scale(1.1);
}

.card-bookmark-btn.active,
.bookmark-btn.active,
.bookmark-btn.is-collected {
  background: var(--color-writing);
  color: #ffffff;
}

.artwork-thumb-btn {
  width: 100%;
  height: 100%;
  background: transparent;
  border: none;
  cursor: pointer;
  position: relative;
  padding: 0;
  display: block;
}

.zoom-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 700;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.artwork-thumb-btn:hover .zoom-overlay,
.artwork-thumb-btn:focus .zoom-overlay {
  opacity: 1;
}

.card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.card-date {
  font-size: 0.76rem;
  color: var(--text-subtle);
  font-weight: 600;
}

.card-title {
  font-size: 1.18rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
  line-height: 1.3;
}

.card-description {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 16px;
  flex: 1;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.tag-badge {
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  color: var(--text-muted);
  font-weight: 600;
}

.card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

/* --------------------------------------------------------------------------
   8. Display Modes: Card Grid, Compact List, Media Focus
   Canonical Classes: .view-card-grid, .view-compact-list, .view-media-focus
   Attribute Selectors: main[data-view-mode="..."], [data-view-mode="..."]
   -------------------------------------------------------------------------- */

/* MODE 1: CARD GRID MODE (Default) */
.view-card-grid,
main[data-view-mode="grid"] .cards-grid,
main[data-view-mode="grid"] .gallery-grid,
.cards-grid.view-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
  gap: 24px;
}

.gallery-grid.view-card-grid,
main[data-view-mode="grid"] .gallery-grid {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr));
  gap: 20px;
}

.view-card-grid .portfolio-card,
main[data-view-mode="grid"] .portfolio-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.view-card-grid .card-media,
main[data-view-mode="grid"] .card-media {
  aspect-ratio: 16 / 9;
  width: 100%;
}

.view-card-grid .card-body,
main[data-view-mode="grid"] .card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.view-card-grid .card-description,
main[data-view-mode="grid"] .card-description {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}

.view-card-grid .card-tags,
main[data-view-mode="grid"] .card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.view-card-grid .card-actions,
main[data-view-mode="grid"] .card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

/* MODE 2: COMPACT LIST / FEED MODE */
.view-compact-list,
main[data-view-mode="list"] .cards-grid,
main[data-view-mode="list"] .gallery-grid,
.cards-grid.view-compact-list,
.gallery-grid.view-compact-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.view-compact-list .portfolio-card,
main[data-view-mode="list"] .portfolio-card {
  display: flex;
  flex-direction: row;
  align-items: center;
  padding: 8px 16px;
  min-height: 72px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
  gap: 16px;
}

.view-compact-list .portfolio-card:hover,
main[data-view-mode="list"] .portfolio-card:hover {
  transform: translateX(4px);
  border-color: var(--color-primary-border);
  background: var(--bg-subtle);
  box-shadow: var(--shadow-sm);
}

.view-compact-list .card-media,
main[data-view-mode="list"] .card-media {
  width: 90px;
  height: 60px;
  min-width: 90px;
  aspect-ratio: auto;
  border-radius: 4px;
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
}

.view-compact-list .card-thumb,
.view-compact-list .art-thumbnail-img,
main[data-view-mode="list"] .card-thumb,
main[data-view-mode="list"] .art-thumbnail-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.view-compact-list .card-body,
main[data-view-mode="list"] .card-body {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  padding: 0;
  gap: 16px;
  flex: 1;
  min-width: 0;
}

.view-compact-list .card-meta,
main[data-view-mode="list"] .card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 0;
  flex-shrink: 0;
}

.view-compact-list .card-title,
main[data-view-mode="list"] .card-title {
  font-size: 0.98rem;
  font-weight: 700;
  margin-bottom: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 120px;
}

.view-compact-list .card-description,
main[data-view-mode="list"] .card-description {
  display: none !important;
}

.view-compact-list .card-tags,
main[data-view-mode="list"] .card-tags {
  display: flex;
  gap: 4px;
  margin-bottom: 0;
  flex-shrink: 0;
}

.view-compact-list .tag-badge,
main[data-view-mode="list"] .tag-badge {
  font-size: 0.68rem;
  padding: 1px 6px;
}

.view-compact-list .card-actions,
main[data-view-mode="list"] .card-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 0;
  padding-top: 0;
  border-top: none;
  flex-shrink: 0;
}

.view-compact-list .card-actions .btn,
main[data-view-mode="list"] .card-actions .btn {
  padding: 5px 12px;
  font-size: 0.78rem;
  height: 28px;
}

.view-compact-list .bookmark-btn,
.view-compact-list .card-bookmark-btn,
main[data-view-mode="list"] .bookmark-btn,
main[data-view-mode="list"] .card-bookmark-btn {
  top: 4px;
  right: 4px;
  width: 24px;
  height: 24px;
  font-size: 0.75rem;
}

/* MODE 3: MEDIA FOCUS / MINIMALIST MODE */
.view-media-focus,
main[data-view-mode="focus"] .cards-grid,
main[data-view-mode="focus"] .gallery-grid,
.cards-grid.view-media-focus,
.gallery-grid.view-media-focus {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 460px), 1fr));
  gap: 36px;
}

.view-media-focus .portfolio-card,
main[data-view-mode="focus"] .portfolio-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.view-media-focus .portfolio-card:hover,
main[data-view-mode="focus"] .portfolio-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.view-media-focus .card-media,
main[data-view-mode="focus"] .card-media {
  aspect-ratio: 16 / 10;
  width: 100%;
  background: #000000;
  position: relative;
}

.view-media-focus .card-thumb,
.view-media-focus .art-thumbnail-img,
main[data-view-mode="focus"] .card-thumb,
main[data-view-mode="focus"] .art-thumbnail-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.view-media-focus .portfolio-card:hover .card-thumb,
.view-media-focus .portfolio-card:hover .art-thumbnail-img,
main[data-view-mode="focus"] .portfolio-card:hover .card-thumb,
main[data-view-mode="focus"] .portfolio-card:hover .art-thumbnail-img {
  transform: scale(1.04);
}

.view-media-focus .card-body,
main[data-view-mode="focus"] .card-body {
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.view-media-focus .card-title,
main[data-view-mode="focus"] .card-title {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 0;
}

.view-media-focus .card-tags,
main[data-view-mode="focus"] .card-tags {
  display: none !important;
}

.view-media-focus .card-description,
main[data-view-mode="focus"] .card-description {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}

.view-media-focus .card-actions,
main[data-view-mode="focus"] .card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.view-media-focus .card-actions .btn,
main[data-view-mode="focus"] .card-actions .btn {
  padding: 9px 20px;
  font-size: 0.9rem;
}

/* ==========================================================================
   Milestone 3: Collection Controls & Interactive Bookmark Styling
   ========================================================================== */

/* Header Collection Button */
.btn-collection {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-collection:hover {
  background: var(--bg-subtle);
  border-color: var(--color-primary-border);
}

.btn-collection.active {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-glow);
}

.btn-collection:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.collection-star {
  color: var(--color-writing);
}

.badge-collection {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 700;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 9px;
  transition: transform 0.2s ease;
}

.badge-collection.badge-pulse {
  animation: badge-bump 0.3s ease;
}

@keyframes badge-bump {
  0% { transform: scale(1); }
  50% { transform: scale(1.3); }
  100% { transform: scale(1); }
}

/* Audio Title Header Layout */
.audio-title-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
}

.audio-title-meta {
  flex: 1;
}

/* Clear Collection Button */
.btn-clear-collection {
  display: inline-block;
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  background: transparent;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-clear-collection:hover {
  color: #ef4444;
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.08);
}

/* Empty Collection State Styling */
.empty-state {
  text-align: center;
  padding: clamp(40px, 8vw, 70px) 24px;
  background: var(--bg-card);
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  margin: 32px 0;
  transition: border-color 0.2s ease;
}

.empty-state:hover {
  border-color: var(--color-primary-border);
}

.empty-state-icon {
  font-size: 3rem;
  color: var(--color-writing);
  margin-bottom: 14px;
  display: inline-block;
  animation: pulse-star 2s infinite ease-in-out;
}

@keyframes pulse-star {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.1); opacity: 1; }
}

.empty-state-title {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.empty-state-desc {
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto 24px;
  font-size: 0.95rem;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   9. Audio Player Showcase Styles
   -------------------------------------------------------------------------- */
.audio-player-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
  margin-top: 20px;
}

.audio-main-layout {
  display: flex;
  gap: 28px;
  align-items: center;
}

.audio-artwork-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.audio-artwork-wrapper {
  position: relative;
  width: 180px;
  height: 180px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: var(--bg-subtle);
}

.audio-artwork-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.audio-synth-badge {
  font-size: 0.74rem;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(234, 179, 8, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(234, 179, 8, 0.4);
  font-weight: 700;
}

.audio-controls-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.audio-title {
  font-size: 1.4rem;
  font-weight: 800;
  margin: 4px 0 2px;
  color: var(--text-main);
}

.audio-artist {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Scrub Bar */
.audio-scrub-row {
  display: flex;
  align-items: center;
  gap: 12px;
  user-select: none;
}

.audio-time-label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  min-width: 38px;
}

.audio-seek-track {
  position: relative;
  flex: 1;
  height: 8px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  touch-action: none;
}

.audio-seek-progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), #a855f7);
  border-radius: 4px;
  width: 0%;
  pointer-events: none;
}

.audio-seek-thumb {
  position: absolute;
  top: 50%;
  left: 0%;
  width: 16px;
  height: 16px;
  transform: translate(-50%, -50%);
  background: #ffffff;
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
  pointer-events: none;
  transition: transform 0.1s ease;
}

.audio-seek-track:hover .audio-seek-thumb {
  transform: translate(-50%, -50%) scale(1.2);
}

/* Transport Controls */
.audio-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.audio-transport-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-audio-ctrl {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--text-main);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-audio-ctrl:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-audio-ctrl svg {
  fill: currentColor;
}

.btn-play-main {
  width: 50px;
  height: 50px;
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px var(--color-primary-glow);
}

.btn-play-main:hover {
  background: var(--color-primary-hover);
  color: #ffffff;
  transform: scale(1.05);
}

.audio-volume-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.audio-volume-range {
  width: 90px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

/* Playlist Drawer */
.audio-playlist-wrapper {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.playlist-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.playlist-header h4 {
  font-size: 0.95rem;
  font-weight: 800;
}

.playlist-count {
  font-size: 0.78rem;
  color: var(--text-subtle);
  font-weight: 700;
  text-transform: uppercase;
}

.audio-playlist-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.audio-playlist-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
}

.audio-playlist-item:hover {
  background: var(--bg-card);
  border-color: var(--border);
}

.audio-playlist-item.active {
  background: var(--color-primary-light);
  border-color: var(--color-primary-border);
  color: var(--color-primary);
}

.playlist-item-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.playlist-track-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-subtle);
  width: 20px;
}

.playlist-track-details {
  display: flex;
  flex-direction: column;
}

.playlist-track-title {
  font-size: 0.92rem;
  font-weight: 700;
}

.playlist-track-genre {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.playlist-item-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.playlist-track-duration {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
}

.playlist-play-icon {
  background: transparent;
  border: none;
  color: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
}
.playlist-play-icon svg {
  fill: currentColor;
}

/* --------------------------------------------------------------------------
   10. Video Showcase Player Styles
   -------------------------------------------------------------------------- */
.video-showcase-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-top: 20px;
}

.video-showcase-container {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.video-element {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.video-play-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.9);
  border: none;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
  transition: transform 0.2s ease, background 0.2s ease;
}

.video-play-overlay:hover {
  transform: translate(-50%, -50%) scale(1.1);
  background: var(--color-primary);
}

.video-play-overlay svg {
  fill: currentColor;
  margin-left: 4px;
}

.video-overlay-state {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  text-align: center;
}

.video-overlay-card {
  max-width: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.video-metadata-card {
  padding: 24px;
}

.video-meta-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 12px;
}

.video-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin-top: 4px;
}

.video-duration-pill {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.video-description {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.video-credits {
  font-size: 0.85rem;
  color: var(--text-subtle);
  margin-bottom: 20px;
  padding: 10px 14px;
  background: var(--bg-subtle);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-video);
}

.video-action-row {
  display: flex;
  gap: 12px;
}

/* --------------------------------------------------------------------------
   11. Modal Dialogs & Document Reader
   -------------------------------------------------------------------------- */
.modal-dialog {
  border: none;
  background: transparent;
  padding: 0;
  margin: auto;
  max-width: 90vw;
  max-height: 90vh;
}

.modal-dialog::backdrop {
  background: rgba(11, 15, 25, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.modal-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 680px;
  max-width: 90vw;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 800;
  margin-top: 4px;
}

.modal-close-btn {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

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

.modal-body {
  padding: 24px;
  overflow-y: auto;
  max-height: 60vh;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  background: var(--bg-subtle);
}

/* Reader Modal Spec */
.reader-panel {
  width: 820px;
  max-width: 90vw;
}

.reader-scrollable {
  padding: 32px 40px;
  overflow-y: auto;
  max-height: 65vh;
}

.reader-article {
  max-width: 680px;
  margin: 0 auto;
}

.reader-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 12px;
}

.reader-byline {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.reader-divider {
  height: 2px;
  background: var(--border);
  margin: 20px 0 28px;
}

.reader-body {
  font-family: var(--font-serif);
  font-size: 1.08rem;
  line-height: 1.8;
  color: var(--text-main);
}

.reader-body p {
  margin-bottom: 20px;
}

.reader-body h3 {
  font-family: var(--font-sans);
  font-size: 1.3rem;
  font-weight: 800;
  margin: 32px 0 12px;
  color: var(--color-primary);
}

.reader-body code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 2px 6px;
  background: var(--bg-subtle);
  border-radius: 4px;
}

/* --------------------------------------------------------------------------
   12. Accessible Modal Lightbox Viewer
   -------------------------------------------------------------------------- */
.lightbox-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-modal[hidden] {
  display: none;
}

.lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(11, 15, 25, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.lightbox-dialog {
  position: relative;
  z-index: 2;
  width: 92vw;
  max-width: 1100px;
  height: 90vh;
  display: flex;
  flex-direction: column;
}

.lightbox-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  color: #ffffff;
}

.lightbox-counter {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
}

.lightbox-actions {
  display: flex;
  gap: 8px;
}

.lightbox-btn {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
}

.lightbox-btn:hover {
  background: rgba(255, 255, 255, 0.25);
}

.lightbox-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.lightbox-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 5;
  transition: all 0.15s ease;
}

.lightbox-nav-btn:hover {
  background: var(--color-primary);
  transform: translateY(-50%) scale(1.1);
}

.lightbox-prev-btn {
  left: 12px;
}

.lightbox-next-btn {
  right: 12px;
}

.lightbox-stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.lightbox-image-wrapper {
  max-width: 100%;
  max-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease;
}

.lightbox-image-wrapper.is-zoomed {
  overflow: auto;
  cursor: zoom-out;
}

.lightbox-image {
  max-width: 100%;
  max-height: calc(90vh - 160px);
  object-fit: contain;
  cursor: zoom-in;
  transition: transform 0.2s ease;
  user-select: none;
}

.lightbox-caption {
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  color: #ffffff;
  margin-top: 10px;
}

.lightbox-caption-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.lightbox-title {
  font-size: 1.15rem;
  font-weight: 800;
}

.lightbox-meta {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 4px 0 6px;
  display: flex;
  gap: 8px;
}

.lightbox-desc {
  font-size: 0.88rem;
  color: #cbd5e1;
  line-height: 1.5;
}

.lightbox-tag {
  font-size: 0.72rem;
  padding: 2px 8px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  margin-left: 4px;
}

/* --------------------------------------------------------------------------
   13. Site Footer
   -------------------------------------------------------------------------- */
footer.site-footer {
  margin-top: auto;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 48px 0 24px;
}

.footer-layout {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.footer-brand {
  max-width: 440px;
}

.footer-brand-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.footer-title {
  font-size: 1.15rem;
  font-weight: 800;
}

.footer-tagline {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.footer-nav {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col-title {
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-main);
  margin-bottom: 4px;
}

.footer-col a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.15s;
}

.footer-col a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-subtle);
  font-size: 0.82rem;
}

/* --------------------------------------------------------------------------
   14. Responsive em Breakpoints (Preventing Header/Navbar Overflow)
   -------------------------------------------------------------------------- */

/* Breakpoint 1: Desktop to Tablet Compaction (64em ≈ 1024px) */
@media (max-width: 64em) {
  .brand-tag {
    display: none;
  }
  .nav-links {
    gap: 4px;
  }
  .nav-link {
    padding: 6px 8px;
    font-size: 0.85rem;
  }
  .collection-text {
    display: none;
  }
}

/* Breakpoint 2: Tablet to Mobile Landscape (48em ≈ 768px) */
@media (max-width: 48em) {
  :root {
    --header-height: 52px;
  }

  .nav-wrap {
    gap: 8px;
  }

  .brand-sub {
    display: none;
  }

  .nav-label {
    display: none;
  }

  .nav-link {
    padding: 6px 10px;
    font-size: 1rem;
  }

  .hero-layout {
    flex-direction: column;
    text-align: center;
  }

  .hero-visual {
    margin-bottom: 8px;
  }

  .hero-bio {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-actions {
    justify-content: center;
  }

  .audio-main-layout {
    flex-direction: column;
    align-items: stretch;
  }

  .reader-scrollable {
    padding: 24px 20px;
  }
}

/* Breakpoint 3: Mobile Portrait (34em ≈ 544px) */
@media (max-width: 34em) {
  .container {
    padding: 0 14px;
  }

  .brand-name {
    display: none;
  }

  .discipline-nav {
    overflow-x: auto;
  }

  .nav-actions {
    gap: 6px;
  }

  .btn-switcher[data-mode="focus"] {
    display: none;
  }

  .modal-panel {
    width: 100%;
    max-height: 94vh;
    border-radius: 16px 16px 0 0;
    margin-top: auto;
  }

  .modal-dialog {
    align-items: flex-end;
  }

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

/* Breakpoint 4: Ultra-compact micro-device safety (21.25em ≈ 340px) */
@media (max-width: 21.25em) {
  .container {
    padding: 0 8px;
  }

  .nav-wrap {
    gap: 4px;
  }

  .btn-collection {
    padding: 0 8px;
  }

  .view-switcher {
    display: none;
  }
}

/* Accessibility: Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}