:root {
  color-scheme: dark;
  --page-bg: #060606;
  --panel-bg: #111111;
  --panel-border: #202020;
  --text: #f3f3f3;
  --muted: #a8a8a8;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: radial-gradient(circle at top, #1b1b1b 0%, var(--page-bg) 55%);
  color: var(--text);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

body {
  min-height: 100vh;
}

.player-shell {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto auto auto;
}

.player-topbar,
.player-shell-error {
  padding: 5px 18px 0;
}

.player-topbar {
  display: flex;
  align-items: center;
  gap: 9px;
}

.player-topbar h1,
.player-error-box h1 {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
}

.back-link {
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--panel-border);
  background: rgba(255, 255, 255, 0.04);
  border-radius: 999px;
  padding: 6px 10px;
}

.player-frame-shell {
  padding: 8px 18px 18px;
}

.player-frame {
  width: 100%;
  height: 90vh;
  border: 0;
  border-radius: 20px;
  background: #000;
}

.related-videos-shell {
  padding: 0 18px 24px;
}

.related-videos-header {
  margin-bottom: 12px;
}

.related-videos-header h2 {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 700;
}

.related-videos-arrow {
  color: var(--muted);
  font-size: 0.9em;
  line-height: 1;
}

.related-videos-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.related-videos-grid .video-link {
  position: relative;
  display: block;
  color: inherit;
  text-decoration: none;
}

.related-videos-grid .media-shell {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 14px;
  background: #121212;
}

.related-videos-grid .video-thumb-media,
.related-videos-grid .media-fallback {
  width: 100%;
  height: 100%;
}

.related-videos-grid .video-thumb-media {
  display: block;
  object-fit: cover;
}

.related-videos-grid .media-fallback {
  background:
    radial-gradient(circle at top right, rgba(43, 124, 238, 0.2), transparent 30%),
    linear-gradient(135deg, #1f2937, #111827);
}

.related-videos-grid .duration-badge {
  position: absolute;
  right: 10px;
  bottom: 10px;
  border-radius: 6px;
  padding: 4px 6px;
  background: rgba(0, 0, 0, 0.8);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
}

.related-videos-grid .video-tooltip {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 10px;
  border-radius: 10px;
  padding: 8px 10px;
  background: rgba(7, 12, 18, 0.92);
  color: var(--text);
  font-size: 0.8rem;
  line-height: 1.35;
  opacity: 0;
  transform: translateY(6px);
  pointer-events: none;
  transition: opacity 140ms ease, transform 140ms ease;
}

.related-videos-grid .video-link:hover .video-tooltip,
.related-videos-grid .video-link:focus-visible .video-tooltip,
.related-videos-grid .video-link:focus-within .video-tooltip {
  opacity: 1;
  transform: translateY(0);
}

.player-shell-error {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.player-error-box {
  max-width: 760px;
  border: 1px solid var(--panel-border);
  background: var(--panel-bg);
  border-radius: 20px;
  padding: 20px;
}

.player-error-box p {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.5;
}

@media (max-width: 720px) {
  .player-topbar,
  .player-shell-error,
  .player-frame-shell {
    padding-left: 10px;
    padding-right: 10px;
  }

  .player-frame {
    height: 90vh;
    border-radius: 14px;
  }
}

@media (min-width: 720px) {
  .related-videos-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .related-videos-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}