:root {
  --bg: #fff;
  --ink: #0f0f0f;
  --muted: #606060;
  --subtle: #f2f2f2;
  --line: #e6e6e6;
  --chip: #f8f8f8;
  --accent: #ff0033;
  --ok: #168a46;
  --bad: #d93025;
  --idle: #7a7a7a;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.10);
  --radius: 12px;
  --max: 1720px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Inter", ui-sans-serif, system-ui, -apple-system, Segoe UI, sans-serif;
  font-size: 16px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

.boot {
  min-height: 80vh;
  display: grid;
  place-items: center;
  color: var(--muted);
}

.channel-top {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 64px;
  padding: 0 28px;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 260px minmax(220px, 620px);
  gap: 24px;
  align-items: center;
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 750;
  letter-spacing: 0;
}

.brand-logo {
  width: 32px;
  height: 32px;
  display: block;
  object-fit: contain;
}

.search-shell {
  position: relative;
}

.search-shell input {
  width: 100%;
  height: 42px;
  padding: 0 18px;
  border: 1px solid #cfcfcf;
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
  outline: none;
}

.search-shell input:focus {
  border-color: #111;
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.08);
}

.channel,
.watch {
  max-width: var(--max);
  margin: 0 auto;
  padding: 26px 28px 90px;
}

.channel-hero {
  display: grid;
  grid-template-columns: 104px 1fr;
  gap: 22px;
  align-items: center;
  padding: 12px 0 22px;
  border-bottom: 1px solid var(--line);
}

.avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #101010;
  color: #fff;
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -0.08em;
}

.eyebrow {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--muted);
  font-weight: 700;
}

h1 {
  margin: 4px 0 2px;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.04;
  letter-spacing: -0.045em;
}

p {
  margin: 0;
  color: var(--muted);
}

.tabs {
  height: 52px;
  display: flex;
  align-items: flex-end;
  gap: 24px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 26px;
}

.tabs a {
  padding: 0 0 13px;
  color: var(--muted);
  font-weight: 650;
}

.tabs a.active {
  color: var(--ink);
  border-bottom: 3px solid var(--ink);
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 42px 24px;
}

.video-card[hidden] {
  display: none;
}

.no-results {
  min-height: 240px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 6px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  color: var(--muted);
}

.no-results[hidden] {
  display: none;
}

.no-results h2 {
  margin: 0;
  color: var(--ink);
  font-size: 24px;
  letter-spacing: 0;
}

.thumb-link,
.thumb {
  display: block;
}

.thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #080808;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}

.thumb video,
.thumb img,
.main-player video,
.queue-thumb video,
.queue-thumb img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  background: #000;
}

.thumb-sheen {
  position: absolute;
  inset: auto 0 0;
  height: 26%;
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.45));
  pointer-events: none;
}

.duration {
  position: absolute;
  right: 8px;
  bottom: 8px;
  padding: 3px 6px;
  border-radius: 5px;
  background: rgba(0, 0, 0, 0.82);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
  background: var(--idle);
}

.thumb .status-dot {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 4px;
  border-radius: 0;
}

.status-dot.built {
  background: var(--accent);
}

.status-dot.failed {
  background: var(--bad);
}

.status-dot.unchanged {
  background: var(--idle);
}

.thumb.no-video {
  display: grid;
  place-items: center;
  color: #fff;
}

.card-row {
  display: grid;
  grid-template-columns: 1fr 34px;
  gap: 10px;
  margin-top: 12px;
}

.video-title {
  font-size: 19px;
  line-height: 1.25;
  font-weight: 760;
  letter-spacing: -0.025em;
}

.video-title:hover,
.related-title:hover,
.queue-title:hover {
  text-decoration: underline;
}

.icon-button {
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  padding: 0;
  background: #fff;
  color: #111;
  cursor: pointer;
  border-radius: 50%;
  display: grid;
  place-items: center;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.icon-button svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-button:hover {
  background: var(--subtle);
  border-color: #d0d0d0;
}

.icon-button:active {
  transform: scale(0.96);
}

.icon-button.copied {
  background: #111;
  border-color: #111;
  color: #fff;
}

.video-meta,
.video-submeta,
.queue-meta,
.related-meta {
  color: var(--muted);
  font-size: 14px;
}

.video-meta {
  margin-top: 4px;
}

.warn {
  color: var(--bad);
}

.debug-index {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.section-title,
.label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--muted);
  font-weight: 800;
}

.debug-table {
  margin-top: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.debug-row {
  display: grid;
  grid-template-columns: 12px 1.1fr 140px 100px 1.2fr;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.debug-row:first-child {
  border-top: 0;
}

.debug-row span {
  color: var(--muted);
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.watch {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 430px;
  gap: 26px;
}

.watch-player-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  margin-bottom: 12px;
}

.main-player {
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.main-player video {
  object-fit: contain;
}

.player-placeholder {
  height: 100%;
  display: grid;
  place-items: center;
  color: #fff;
}

.watch-title-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 18px;
  padding: 20px 0 18px;
  border-bottom: 1px solid var(--line);
}

.watch-actions {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 4px;
}

.back-link {
  display: inline-block;
  color: var(--muted);
  font-weight: 650;
}

.mode-switch {
  display: inline-flex;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--chip);
}

.mode-switch a,
.mode-switch span {
  min-width: 104px;
  padding: 7px 13px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  text-align: center;
}

.mode-switch a.active {
  background: #111;
  color: #fff;
  box-shadow: 0 5px 14px rgba(0, 0, 0, 0.14);
}

.mode-switch .disabled {
  opacity: 0.45;
}

.watch-title-row h1 {
  font-size: clamp(26px, 3vw, 38px);
}

.watch-side {
  display: grid;
  gap: 18px;
  align-content: start;
}

.side-card,
.debug-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  background: #fff;
}

.queue {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.queue-item {
  display: grid;
  grid-template-columns: 28px 132px 1fr;
  gap: 10px;
  align-items: center;
  padding: 8px;
  border-radius: 10px;
}

.queue-item:hover,
.queue-item.active {
  background: var(--subtle);
}

.queue-item.active {
  box-shadow: inset 4px 0 0 #111;
}

.queue-item.disabled {
  cursor: not-allowed;
  opacity: 0.52;
}

.queue-item.disabled:hover {
  background: transparent;
}

.queue-index {
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

.queue-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 8px;
  background: #111;
}

.queue-thumb span {
  position: absolute;
  right: 5px;
  bottom: 4px;
  padding: 2px 5px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.78);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
}

.queue-copy {
  min-width: 0;
}

.queue-title {
  font-weight: 720;
  line-height: 1.22;
}

.debug-panel {
  margin-top: 18px;
}

.debug-panel summary {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
  cursor: pointer;
  list-style: none;
}

.debug-panel summary::-webkit-details-marker {
  display: none;
}

.debug-panel summary::after {
  content: "Show details";
  flex: 0 0 auto;
  align-self: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--chip);
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.debug-panel[open] summary {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.debug-panel[open] summary::after {
  content: "Hide details";
}

.panel-kicker {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 11px;
  font-weight: 800;
}

.panel-head h2 {
  margin: 4px 0 0;
  font-size: 22px;
  letter-spacing: -0.02em;
}

.segment-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 7px;
}

.badge,
.pill {
  padding: 4px 8px;
  border-radius: 7px;
  background: var(--chip);
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.badge.built {
  color: var(--ok);
  background: #e9f6ee;
}

.badge.failed {
  color: var(--bad);
  background: #fcebea;
}

.badge.unchanged {
  color: var(--idle);
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  text-transform: none;
}

.debug-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.8fr);
  gap: 18px;
  padding-top: 16px;
}

.debug-panel:not([open]) .debug-grid {
  display: none;
}

.script-box p {
  white-space: pre-wrap;
  color: var(--ink);
  margin-top: 8px;
}

.artifact-box {
  display: grid;
  gap: 8px;
  align-content: start;
}

.artifact {
  display: grid;
  gap: 3px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--chip);
}

.artifact:hover {
  border-color: #111;
}

.artifact span {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  font-weight: 800;
}

.artifact b {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 13px;
}

.artifact.missing {
  opacity: 0.58;
}

.related-list {
  display: grid;
  gap: 14px;
  margin-top: 12px;
}

.related {
  display: grid;
  grid-template-columns: 142px 1fr;
  gap: 11px;
  align-items: start;
}

.related .thumb {
  border-radius: 9px;
}

.related .duration {
  font-size: 11px;
}

.related-title {
  font-weight: 730;
  line-height: 1.25;
}

@media (max-width: 1180px) {
  .video-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .watch {
    grid-template-columns: 1fr;
  }
  .watch-side {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .channel-top {
    height: auto;
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 14px 16px;
  }
  .channel,
  .watch {
    padding: 18px 14px 70px;
  }
  .channel-hero {
    grid-template-columns: 72px 1fr;
  }
  .avatar {
    width: 68px;
    height: 68px;
    font-size: 34px;
  }
  .video-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .debug-row {
    grid-template-columns: 12px 1fr;
  }
  .debug-row span:nth-last-child(-n + 3) {
    display: none;
  }
  .watch-title-row,
  .watch-player-head,
  .debug-panel summary {
    display: block;
  }
  .watch-actions {
    margin-top: 14px;
    padding-top: 0;
  }
  .mode-switch {
    margin-top: 12px;
    width: 100%;
  }
  .mode-switch a,
  .mode-switch span {
    flex: 1;
    min-width: 0;
  }
  .debug-panel summary::after {
    display: inline-block;
    margin-top: 12px;
  }
  .queue-item {
    grid-template-columns: 24px 120px 1fr;
  }
  .debug-grid {
    grid-template-columns: 1fr;
  }
  .related {
    grid-template-columns: 120px 1fr;
  }
}