/* YouTube-Style Design System & Tokens */
:root {
  --yt-bg: #0f0f0f;
  --yt-surface: #181818;
  --yt-card-bg: #212121;
  --yt-card-hover: #2a2a2a;
  --yt-card-focus: #383838;
  --yt-border: #303030;
  --yt-red: #ff0000;
  --yt-red-hover: #cc0000;
  --yt-text-primary: #f1f1f1;
  --yt-text-secondary: #aaaaaa;
  --yt-radius: 8px;
  --yt-focus-ring: #3ea6ff;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html, body {
  background-color: var(--yt-bg);
  color: var(--yt-text-primary);
  font-family: var(--font-family);
  min-height: 100vh;
  width: 100%;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.skip-link {
  position: absolute;
  top: -60px;
  left: 1rem;
  background: var(--yt-red);
  color: #fff;
  padding: 8px 16px;
  border-radius: var(--yt-radius);
  z-index: 1000;
  font-weight: 700;
  text-decoration: none;
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 1rem;
}

/* YouTube Top Header */
.yt-header {
  position: sticky;
  top: 0;
  height: 64px;
  background: var(--yt-surface);
  border-bottom: 1px solid var(--yt-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  z-index: 200;
}

.yt-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.yt-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}

.yt-logo-badge {
  background: var(--yt-red);
  color: #fff;
  border-radius: 6px;
  width: 34px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.yt-brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.yt-brand-sub {
  background: rgba(255, 255, 255, 0.1);
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--yt-text-secondary);
}

.yt-header-center {
  flex: 1;
  max-width: 580px;
  margin: 0 1.5rem;
}

.yt-search-box {
  position: relative;
  width: 100%;
  display: flex;
  align-items: center;
}

.yt-search-box input {
  width: 100%;
  background: #121212;
  border: 1px solid var(--yt-border);
  border-radius: 20px;
  padding: 8px 36px 8px 16px;
  color: var(--yt-text-primary);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.yt-search-box input:focus {
  border-color: var(--yt-focus-ring);
  box-shadow: 0 0 0 2px rgba(62, 166, 255, 0.2);
}

.yt-search-clear {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  color: var(--yt-text-secondary);
  font-size: 1rem;
  cursor: pointer;
}

.yt-header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.yt-status-badge {
  font-size: 0.85rem;
  color: var(--yt-text-secondary);
  background: rgba(255, 255, 255, 0.06);
  padding: 4px 10px;
  border-radius: 12px;
}

.yt-icon-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid transparent;
  color: var(--yt-text-primary);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s ease;
}
.yt-icon-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Main Layout */
.yt-main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Video Player Theater Section */
.yt-player-section {
  background: var(--yt-surface);
  border: 1px solid var(--yt-border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.yt-player-container {
  position: relative;
  width: 100%;
  background: #000;
  aspect-ratio: 16 / 9;
  max-height: 70vh;
}

/* Video.js Override Theme */
.video-js.vjs-theme-yt {
  width: 100% !important;
  height: 100% !important;
  font-family: inherit;
}
.video-js.vjs-theme-yt .vjs-big-play-button {
  background-color: rgba(255, 0, 0, 0.85) !important;
  border-color: transparent !important;
  border-radius: 16px !important;
  width: 68px !important;
  height: 48px !important;
  line-height: 48px !important;
}
.video-js.vjs-theme-yt .vjs-control-bar {
  background: linear-gradient(0deg, rgba(0, 0, 0, 0.9) 0%, transparent 100%) !important;
  height: 48px !important;
}
.video-js.vjs-theme-yt .vjs-play-progress {
  background-color: var(--yt-red) !important;
}

/* Details Under Player */
.yt-player-details {
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.yt-details-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.yt-video-title {
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.3;
}

.yt-video-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.yt-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 18px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
}

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

.yt-btn-secondary {
  background: rgba(255, 255, 255, 0.12);
  color: var(--yt-text-primary);
}
.yt-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.22);
}

.yt-meta-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.yt-meta-pill {
  background: rgba(255, 255, 255, 0.08);
  color: var(--yt-text-secondary);
  font-size: 0.8rem;
  padding: 3px 10px;
  border-radius: 4px;
}

.yt-badge-red {
  background: var(--yt-red);
  color: #fff;
  font-weight: 700;
}

.yt-stream-source {
  font-size: 0.8rem;
  color: #46d369;
  margin-left: auto;
}

/* Parts Picker */
.yt-parts-picker {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 6px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.yt-part-chip {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--yt-text-primary);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}
.yt-part-chip:hover {
  background: rgba(255, 255, 255, 0.25);
}
.yt-part-chip.active {
  background: var(--yt-red);
  border-color: var(--yt-red);
  color: #fff;
}
.yt-part-chip:focus-visible {
  outline: 2px solid var(--yt-focus-ring);
}

/* Episode List Section */
.yt-list-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

.yt-section-title {
  font-size: 1.25rem;
  font-weight: 700;
}

.yt-item-count {
  font-size: 0.85rem;
  color: var(--yt-text-secondary);
}

.yt-episodes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

/* Episode Card (YouTube Style) */
.yt-card {
  background: var(--yt-card-bg);
  border: 1px solid var(--yt-border);
  border-radius: var(--yt-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.yt-card:hover {
  transform: translateY(-4px);
  background: var(--yt-card-hover);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  border-color: rgba(255, 255, 255, 0.3);
}

.yt-card.active-episode {
  border-color: var(--yt-red);
  box-shadow: 0 0 12px rgba(255, 0, 0, 0.4);
}

.yt-card:focus-visible, .yt-card.tv-focused {
  outline: 3px solid var(--yt-focus-ring);
  box-shadow: 0 0 16px rgba(62, 166, 255, 0.6);
  transform: scale(1.02);
}

.yt-thumb-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #111;
  overflow: hidden;
}

.yt-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.yt-card:hover .yt-thumb-img {
  transform: scale(1.04);
}

.yt-thumb-badge {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0, 0, 0, 0.85);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
}

.yt-card-body {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.yt-card-title {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: var(--yt-text-primary);
}

.yt-card-meta {
  font-size: 0.8rem;
  color: var(--yt-text-secondary);
}

.yt-card-parts {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  padding-top: 6px;
}

.yt-card-part-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--yt-text-primary);
  padding: 4px 10px;
  border-radius: 14px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}
.yt-card-part-btn:hover {
  background: var(--yt-red);
  border-color: var(--yt-red);
  color: #fff;
}
.yt-card-part-btn:focus-visible {
  outline: 2px solid var(--yt-focus-ring);
}

/* Pagination / Load More Bar */
.yt-pagination-bar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  margin-top: 2rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--yt-border);
}

.yt-btn-load-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--yt-surface-hover);
  color: var(--yt-text);
  border: 1px solid var(--yt-border);
  padding: 10px 24px;
  border-radius: 20px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.yt-btn-load-more:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.yt-btn-load-more:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.yt-pagination-info {
  font-size: 0.85rem;
  color: var(--yt-text-secondary);
}

/* Resume Progress Bar & Badges */
.yt-thumb-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 4px;
  background: var(--yt-red);
  box-shadow: 0 0 6px rgba(255, 0, 0, 0.8);
  transition: width 0.3s ease;
  z-index: 5;
}

.yt-card-resume-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  margin-top: 2px;
}

.yt-card-resume-text {
  font-size: 0.75rem;
  color: #ff4e45;
  font-weight: 600;
}

.yt-card-watched-badge {
  background: rgba(70, 211, 105, 0.2);
  color: #46d369;
  border: 1px solid rgba(70, 211, 105, 0.4);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 4px;
}

/* Resume Toast under Video Player */
.yt-resume-toast {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: rgba(255, 0, 0, 0.15);
  border: 1px solid rgba(255, 0, 0, 0.35);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  margin-top: 6px;
  animation: fadeInToast 0.3s ease;
}

.yt-resume-toast button {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: background 0.2s ease;
}
.yt-resume-toast button:hover {
  background: rgba(255, 255, 255, 0.3);
}

@keyframes fadeInToast {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Footer */
.yt-footer {
  text-align: center;
  padding: 2rem 1.5rem;
  border-top: 1px solid var(--yt-border);
  color: var(--yt-text-secondary);
  font-size: 0.85rem;
}
.yt-footer code {
  background: rgba(255, 255, 255, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
  color: #fff;
}

/* Responsive Breakpoints */
@media (max-width: 768px) {
  .yt-header {
    padding: 0 1rem;
    height: 56px;
  }
  .yt-brand-sub {
    display: none;
  }
  .yt-main {
    padding: 1rem;
    gap: 1.5rem;
  }
  .yt-episodes-grid {
    grid-template-columns: 1fr;
  }
}