/* ==============================================================================
   Art Companion — Web Portal Layout & Component Styling (artcompanion.online)
   ============================================================================== */

/* Layout Shell */
#app-shell {
  display: flex;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background-color: var(--gallery-bg);
}

/* Left Persistent Navigation Rail */
#nav-rail {
  width: 260px;
  height: 100%;
  background-color: var(--gallery-surface);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: width var(--transition-smooth);
  z-index: 100;
}

.brand-header {
  padding: 24px 20px 18px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.brand-icon {
  font-size: 28px;
  filter: drop-shadow(0 0 8px rgba(212, 175, 55, 0.4));
}

.brand-title {
  font-family: var(--font-serif-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--gold-light);
}

.brand-subtitle {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* Navigation Links */
.nav-links {
  list-style: none;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex-grow: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.nav-item:hover {
  background-color: var(--gallery-surface-elevated);
  color: var(--text-primary);
  transform: translateX(3px);
}

.nav-item.active {
  background: linear-gradient(135deg, rgba(21, 101, 192, 0.25), rgba(212, 175, 55, 0.15));
  color: var(--gold-light);
  border: 1px solid var(--border-gold-glow);
  font-weight: 600;
}

.nav-icon {
  font-size: 18px;
}

/* User & Sovereignty Badge in Rail */
.rail-footer {
  padding: 16px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.swiss-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: rgba(27, 94, 32, 0.25);
  border: 1px solid rgba(129, 199, 132, 0.4);
  color: var(--botanical-green);
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font-mono);
}

/* Main Viewport Container */
#main-viewport {
  flex-grow: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

/* Top Utility Bar */
#top-bar {
  height: 64px;
  background-color: var(--gallery-surface);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  flex-shrink: 0;
  z-index: 90;
}

.top-bar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.page-title {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.top-bar-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* Connoisseur Profile Chip */
.user-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 8px;
  background-color: var(--gallery-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.user-chip:hover {
  border-color: var(--gold-primary);
  box-shadow: var(--shadow-gold);
}

.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background-color: var(--gallery-blue-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 12px;
  color: #fff;
  overflow: hidden;
}

.user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Primary & Action Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold-light), var(--gold-primary));
  color: #121212;
  box-shadow: 0 4px 14px rgba(212, 175, 55, 0.3);
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.btn-tonal {
  background-color: var(--gallery-surface-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
}

.btn-tonal:hover {
  background-color: var(--gallery-surface-overlay);
  border-color: var(--gold-light);
}

.btn-danger {
  background-color: var(--crimson-container);
  color: #fff;
}

.btn-danger:hover {
  background-color: var(--crimson-accent);
}

/* Content Container */
.view-content {
  flex-grow: 1;
  overflow-y: auto;
  padding: 32px 36px;
}

/* Masterpiece Deep Zoom & Study View */
.study-studio-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 24px;
  height: calc(100vh - 128px);
}

.canvas-viewport-wrapper {
  position: relative;
  background-color: #05070a;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  box-shadow: var(--shadow-elevation);
  display: flex;
  align-items: center;
  justify-content: center;
}

#deep-zoom-canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}

#deep-zoom-canvas:active {
  cursor: grabbing;
}

/* Floating HUD Canvas Controls */
.canvas-hud-controls {
  position: absolute;
  top: 18px;
  left: 18px;
  display: flex;
  gap: 8px;
  background: var(--gallery-surface-glass);
  backdrop-filter: blur(16px);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-medium);
  z-index: 20;
}

.hud-btn {
  background: none;
  border: none;
  color: var(--text-primary);
  padding: 6px 10px;
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.hud-btn:hover, .hud-btn.active {
  background-color: rgba(255, 255, 255, 0.15);
  color: var(--gold-light);
}

.canvas-status-badge {
  position: absolute;
  bottom: 18px;
  left: 18px;
  background: var(--gallery-surface-glass);
  backdrop-filter: blur(16px);
  padding: 6px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}

/* Study Dossier Sidebar */
.study-dossier-panel {
  background-color: var(--gallery-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.dossier-header {
  padding: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.artwork-title {
  font-family: var(--font-serif-title);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.artwork-artist {
  font-size: 13px;
  color: var(--gold-light);
  font-weight: 600;
}

.artwork-venue {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.dossier-body {
  padding: 20px;
  overflow-y: auto;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.dossier-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.section-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.curator-note-card {
  background-color: var(--gallery-surface-elevated);
  padding: 14px;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--gold-primary);
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-primary);
}

/* Audio Player Widget */
.audio-player-widget {
  background-color: var(--gallery-surface-elevated);
  padding: 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.audio-player-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.audio-play-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  background: var(--gold-light);
  color: #121212;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  cursor: pointer;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.audio-play-btn:hover {
  transform: scale(1.08);
}

.audio-waveform-canvas {
  width: 100%;
  height: 38px;
  background-color: #0d1117;
  border-radius: var(--radius-sm);
}

/* Layer Control Slider */
.layer-control-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--gallery-surface-elevated);
  padding: 12px 14px;
  border-radius: var(--radius-md);
}

.layer-slider {
  accent-color: var(--gold-primary);
  width: 120px;
}

/* Color Palette Swatches */
.palette-row {
  display: flex;
  gap: 8px;
}

.palette-swatch {
  flex: 1;
  height: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.15);
  cursor: pointer;
  transition: transform var(--transition-fast);
  position: relative;
}

.palette-swatch:hover {
  transform: scale(1.1);
}

/* Community Vernissage Feed */
.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 24px;
}

.community-card {
  background-color: var(--gallery-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-smooth);
}

.community-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-gold-glow);
  box-shadow: var(--shadow-elevation);
}

.card-media-wrapper {
  position: relative;
  width: 100%;
  height: 220px;
  background-color: #05070a;
  overflow: hidden;
  cursor: pointer;
}

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

.community-card:hover .card-media-img {
  transform: scale(1.04);
}

.media-tag-badges {
  position: absolute;
  bottom: 12px;
  left: 12px;
  display: flex;
  gap: 6px;
}

.media-tag {
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(8px);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 600;
  border: 1px solid var(--border-subtle);
}

.card-content {
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex-grow: 1;
}

.card-author-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-critique-text {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-secondary);
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-top: 1px solid var(--border-subtle);
  background-color: rgba(22, 27, 34, 0.4);
}

.interaction-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.interaction-btn:hover {
  color: var(--gold-light);
}

.interaction-btn.liked {
  color: var(--crimson-accent);
}

/* Admin Dashboard & GDPR Privacy Center */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-bottom: 24px;
}

.kpi-card {
  background-color: var(--gallery-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.kpi-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
}

.kpi-title {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
}

.kpi-subtitle {
  font-size: 11px;
  color: var(--gold-light);
  font-weight: 600;
}

/* Modal Overlay & Card */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal-card {
  background-color: var(--gallery-surface);
  border: 1px solid var(--border-gold-glow);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 580px;
  padding: 28px;
  box-shadow: var(--shadow-elevation);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-family: var(--font-serif-title);
  font-size: 20px;
  font-weight: 700;
  color: var(--gold-light);
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  #nav-rail { width: 80px; }
  .brand-title, .brand-subtitle, .nav-label, .rail-footer .swiss-badge span { display: none; }
  .study-studio-grid { grid-template-columns: 1fr; height: auto; }
}

@media (max-width: 768px) {
  #app-shell { flex-direction: column; }
  #nav-rail { width: 100%; height: 60px; flex-direction: row; border-right: none; border-top: 1px solid var(--border-subtle); order: 2; }
  .nav-links { flex-direction: row; justify-content: space-around; padding: 6px; }
  .brand-header, .rail-footer { display: none; }
  #main-viewport { order: 1; height: calc(100vh - 60px); }
  .view-content { padding: 18px 16px; }
}