/* Spectra — A YouTube Suggest Engine Styling */
:root {
  --bg-primary: #07090e;
  --bg-secondary: #0d121d;
  --bg-card: rgba(18, 24, 38, 0.75);
  --bg-card-hover: rgba(25, 34, 54, 0.9);
  --bg-glass: rgba(15, 21, 35, 0.7);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(99, 102, 241, 0.35);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-indigo: #6366f1;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  --accent-violet: #8b5cf6;

  --spectra-gradient: linear-gradient(135deg, #6366f1 0%, #06b6d4 50%, #10b981 100%);
  --spectra-border: linear-gradient(135deg, rgba(99, 102, 241, 0.6), rgba(6, 182, 212, 0.6), rgba(16, 185, 129, 0.6));

  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.25);
  --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.5;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Ambient optical glow */
.ambient-glow {
  position: fixed;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(120px);
  z-index: 0;
  opacity: 0.18;
}

.glow-1 {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, #6366f1, #06b6d4);
  top: -100px;
  left: 10%;
}

.glow-2 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #ec4899, #8b5cf6);
  bottom: -150px;
  right: 5%;
}

/* Header */
.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 28px;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  gap: 16px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.brand-logo {
  width: 38px;
  height: 38px;
  filter: drop-shadow(0 2px 8px rgba(99, 102, 241, 0.4));
  transition: transform var(--transition-smooth);
}

.brand:hover .brand-logo {
  transform: rotate(6deg) scale(1.05);
}

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

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  background: var(--spectra-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.header-pill-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 600;
  color: #34d399;
}

.pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #10b981;
  box-shadow: 0 0 8px #10b981;
  animation: pulseGlow 2s infinite;
}

@keyframes pulseGlow {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

/* Recency Picker */
.header-center {
  display: flex;
  align-items: center;
}

.recency-picker {
  display: flex;
  align-items: center;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 3px 4px;
  gap: 2px;
}

.recency-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  padding: 0 8px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.recency-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.recency-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.recency-btn.active {
  background: var(--accent-indigo);
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(99, 102, 241, 0.3);
}

/* Header Right Buttons */
.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--spectra-gradient);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
}

.btn-glass {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(8px);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.18);
  transform: translateY(-1px);
}

.btn-glass.icon-only {
  padding: 8px;
}

.btn-danger {
  background: rgba(244, 63, 94, 0.15);
  color: #fb7185;
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.btn-danger:hover {
  background: rgba(244, 63, 94, 0.25);
  color: #ffffff;
}

.kbd-shortcut {
  background: rgba(0, 0, 0, 0.3);
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.count-badge {
  background: #6366f1;
  color: #ffffff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: var(--radius-full);
}

/* Topics Ribbon */
.topics-ribbon {
  display: flex;
  align-items: center;
  padding: 10px 28px;
  background: rgba(11, 15, 25, 0.85);
  border-bottom: 1px solid var(--border-subtle);
  gap: 12px;
  position: relative;
  z-index: 40;
}

.ribbon-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.topics-scroll {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding-right: 8px;
}

.topics-scroll::-webkit-scrollbar {
  display: none;
}

.topic-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.topic-chip:hover {
  background: rgba(255, 255, 255, 0.09);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.16);
}

.topic-chip.active {
  background: rgba(99, 102, 241, 0.18);
  border-color: var(--accent-indigo);
  color: #c7d2fe;
  font-weight: 600;
}

.topic-chip.person-chip.active {
  background: rgba(6, 182, 212, 0.18);
  border-color: var(--accent-cyan);
  color: #a5f3fc;
}

.btn-add-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  background: transparent;
  border: 1px dashed rgba(255, 255, 255, 0.18);
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.76rem;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-add-chip:hover {
  border-color: var(--accent-indigo);
  color: var(--text-primary);
  background: rgba(99, 102, 241, 0.08);
}

/* Main Content */
.main-content {
  max-width: 1560px;
  margin: 0 auto;
  padding: 24px 28px 60px;
  position: relative;
  z-index: 10;
}

.feed-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 22px;
  gap: 16px;
}

.feed-title-wrap h2 {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.feed-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
  display: block;
  margin-top: 3px;
}

.feed-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 4px 10px;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}

.btn-text-action {
  background: none;
  border: none;
  color: var(--accent-cyan);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
}

.btn-text-action:hover {
  text-decoration: underline;
}

/* Video Grid */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 22px;
}

/* Video Card */
.video-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-smooth);
  position: relative;
  box-shadow: var(--shadow-card);
}

.video-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(99, 102, 241, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 12px 36px 0 rgba(0, 0, 0, 0.5), var(--shadow-glow);
}

/* Thumbnail Wrap */
.card-thumbnail-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: #0b0f19;
  cursor: pointer;
  overflow: hidden;
}

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

.video-card:hover .card-thumbnail {
  transform: scale(1.04);
}

.card-play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.35);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.video-card:hover .card-play-overlay {
  opacity: 1;
}

.play-circle {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--spectra-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
  transform: scale(0.9);
  transition: transform var(--transition-fast);
}

.video-card:hover .play-circle {
  transform: scale(1);
}

.pill-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0, 0, 0, 0.85);
  color: #f1f5f9;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.pill-timing {
  position: absolute;
  top: 8px;
  left: 8px;
  background: rgba(15, 23, 42, 0.9);
  color: #38bdf8;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(56, 189, 248, 0.3);
  backdrop-filter: blur(4px);
}

/* Card Body */
.card-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 10px;
}

.card-why-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.68rem;
  font-weight: 600;
  color: #c7d2fe;
  background: rgba(99, 102, 241, 0.12);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  width: fit-content;
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-title {
  font-size: 0.94rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  cursor: pointer;
}

.card-title:hover {
  color: #a5b4fc;
}

.card-creator-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.card-creator-name {
  font-weight: 600;
  color: #e2e8f0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 170px;
}

.card-views {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* Card Toolbar */
.card-toolbar {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.toolbar-left {
  display: flex;
  align-items: center;
  gap: 6px;
}

.toolbar-right {
  display: flex;
  align-items: center;
  gap: 4px;
}

.card-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 5px 8px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.card-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-primary);
}

.btn-watchlist.saved {
  background: rgba(99, 102, 241, 0.2);
  border-color: var(--accent-indigo);
  color: #a5b4fc;
}

.btn-thumb-up:hover, .btn-thumb-up.active {
  background: rgba(16, 185, 129, 0.2);
  border-color: var(--accent-emerald);
  color: #34d399;
}

.btn-thumb-down:hover, .btn-thumb-down.active {
  background: rgba(245, 158, 11, 0.2);
  border-color: var(--accent-amber);
  color: #fbbf24;
}

.btn-nope {
  color: #f87171;
  background: rgba(244, 63, 94, 0.08);
  border-color: rgba(244, 63, 94, 0.2);
}

.btn-nope:hover {
  background: rgba(244, 63, 94, 0.25);
  border-color: var(--accent-rose);
  color: #ffffff;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px dashed var(--border-subtle);
  max-width: 580px;
  margin: 40px auto;
}

.empty-icon-wrap {
  display: inline-flex;
  padding: 16px;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.1);
  color: var(--accent-indigo);
  margin-bottom: 16px;
}

.empty-state h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.empty-state p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.empty-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
}

/* Drawers */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 100;
  display: flex;
  justify-content: flex-end;
  transition: opacity var(--transition-smooth);
}

.drawer-panel {
  width: 100%;
  max-width: 500px;
  height: 100%;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.5);
  animation: slideDrawer 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideDrawer {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

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

.drawer-title-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.drawer-title-wrap h3 {
  font-size: 1.15rem;
  font-weight: 700;
}

.preserved-tag {
  font-size: 0.68rem;
  background: rgba(99, 102, 241, 0.15);
  color: #a5b4fc;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.btn-close-drawer {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  display: flex;
}

.btn-close-drawer:hover {
  color: var(--text-primary);
}

/* Watchlist Tabs & List */
.drawer-tabs {
  display: flex;
  padding: 10px 24px;
  gap: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.drawer-tab {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
}

.drawer-tab.active {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}

.watchlist-items-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 16px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.wl-item {
  display: flex;
  gap: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 10px;
  position: relative;
  transition: all var(--transition-fast);
}

.wl-item:hover {
  border-color: rgba(99, 102, 241, 0.3);
}

.wl-item.watched {
  opacity: 0.6;
}

.wl-thumb-wrap {
  width: 100px;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-sm);
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
  cursor: pointer;
}

.wl-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.wl-info {
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 4px;
  min-width: 0;
}

.wl-title {
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  cursor: pointer;
}

.wl-title:hover {
  color: #a5b4fc;
}

.wl-meta {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.wl-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
}

.btn-toggle-watched {
  background: none;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.7rem;
  padding: 3px 8px;
  cursor: pointer;
}

.btn-toggle-watched.watched-true {
  background: rgba(16, 185, 129, 0.15);
  border-color: var(--accent-emerald);
  color: #34d399;
}

.btn-wl-remove {
  background: none;
  border: none;
  color: #f87171;
  font-size: 0.7rem;
  cursor: pointer;
}

/* Tuning Content */
.tuning-content {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.telemetry-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  flex-direction: column;
}

.telemetry-val {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: #38bdf8;
}

.telemetry-key {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.tuning-section h4 {
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.section-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin-bottom: 12px;
}

.tuning-topics-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.topic-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  gap: 12px;
}

.topic-info-left {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}

.topic-row-title {
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topic-row-weight {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: #a5b4fc;
}

.topic-toggle-btn {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #34d399;
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 4px 10px;
  cursor: pointer;
}

.topic-toggle-btn.inactive {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-subtle);
  color: var(--text-muted);
}

.nopes-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.nope-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(244, 63, 94, 0.06);
  border: 1px solid rgba(244, 63, 94, 0.18);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  font-size: 0.78rem;
}

.btn-unblock {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-secondary);
  font-size: 0.7rem;
  border-radius: var(--radius-sm);
  padding: 3px 8px;
  cursor: pointer;
}

.btn-unblock:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

/* Modal Dialog */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 150;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-dialog {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 480px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.7);
  overflow: hidden;
  animation: modalPop 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalPop {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-header {
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
}

.modal-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
}

.btn-close-modal {
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--text-muted);
  cursor: pointer;
}

.modal-body {
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-group input, .form-group select {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 9px 12px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
}

.form-group input:focus, .form-group select:focus {
  outline: none;
  border-color: var(--accent-indigo);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.form-group small {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 10px;
}

/* Video Player Modal */
.player-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.player-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 960px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.8);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.player-header {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
}

.player-title-info h4 {
  font-size: 0.96rem;
  font-weight: 700;
}

.player-title-info span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.player-header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-icon-link {
  color: var(--text-secondary);
  display: flex;
  padding: 4px;
}

.btn-icon-link:hover {
  color: #38bdf8;
}

.btn-close-player {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  padding: 4px;
}

.btn-close-player:hover {
  color: var(--text-primary);
}

.player-video-wrap {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000000;
}

.player-video-wrap iframe {
  width: 100%;
  height: 100%;
  display: block;
}

.player-footer {
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
}

.player-footer-right {
  display: flex;
  gap: 8px;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  background: var(--bg-card-hover);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-primary);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  pointer-events: auto;
  animation: toastIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes toastIn {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.toast-btn-undo {
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: var(--radius-sm);
  color: #a5b4fc;
  font-weight: 700;
  font-size: 0.72rem;
  padding: 3px 8px;
  cursor: pointer;
}

.hidden {
  display: none !important;
}

/* Mobile Responsiveness */
@media (max-width: 900px) {
  .app-header {
    flex-wrap: wrap;
    padding: 12px 16px;
  }
  .header-center {
    order: 3;
    width: 100%;
    justify-content: center;
    margin-top: 6px;
  }
  .topics-ribbon {
    padding: 10px 16px;
  }
  .main-content {
    padding: 16px 16px 40px;
  }
  .video-grid {
    grid-template-columns: 1fr;
  }
}