* {
  box-sizing: border-box;
}

:root {
  color-scheme: dark;
  --bg: #101114;
  --panel: #181a1f;
  --panel-2: #20242b;
  --text: #f4f5f7;
  --muted: #a5adba;
  --line: #30343d;
  --accent: #63c9ad;
  --accent-2: #8ab4ff;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  background: rgba(16, 17, 20, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

h1, h2, h3, p {
  margin-top: 0;
}

.topbar h1 {
  margin: 0;
  font-size: 20px;
}

.topbar p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.watch-link {
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
}

.topbar-button {
  flex: 0 0 auto;
  padding: 8px 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(99, 201, 173, 0.1);
  color: var(--text);
  font: inherit;
  cursor: pointer;
  white-space: nowrap;
}

.topbar-button:hover {
  border-color: var(--accent);
}

.detail-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.copy-link {
  padding: 8px 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(99, 201, 173, 0.1);
  color: var(--text);
  font: inherit;
  cursor: pointer;
  white-space: nowrap;
}

.copy-link:hover {
  border-color: var(--accent);
}

.layout {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  min-height: calc(100vh - 68px);
}

body.sidebar-hidden .layout {
  grid-template-columns: minmax(0, 1fr);
}

.sidebar {
  border-right: 1px solid var(--line);
  background: var(--panel);
}

body.sidebar-hidden .sidebar {
  display: none;
}

.filters {
  position: sticky;
  top: 69px;
  z-index: 1;
  display: grid;
  gap: 8px;
  padding: 12px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

input,
select {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-2);
  color: var(--text);
  font: inherit;
}

.video-list {
  padding: 8px;
}

.video-card {
  width: 100%;
  display: block;
  padding: 12px;
  margin-bottom: 8px;
  text-align: left;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-2);
  color: var(--text);
  cursor: pointer;
}

.video-card.active {
  border-color: var(--accent);
}

.card-title {
  display: block;
  font-weight: 650;
  line-height: 1.35;
}

.card-meta {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

.viewer {
  min-width: 0;
  padding: 18px;
}

.empty,
.detail {
  max-width: 980px;
  margin: 0 auto;
}

.hidden {
  display: none;
}

.detail-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.detail-head h2 {
  margin: 6px 0;
  font-size: 25px;
  line-height: 1.25;
}

.meta-line,
.subtitle,
.muted {
  color: var(--muted);
}

.tabs {
  position: sticky;
  top: 69px;
  z-index: 1;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 12px 0;
  background: var(--bg);
}

.tabs button {
  flex: 0 0 auto;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--muted);
  font: inherit;
}

.tabs button.active {
  color: var(--text);
  border-color: var(--accent);
  background: rgba(99, 201, 173, 0.14);
}

.content {
  padding: 10px 0 60px;
  line-height: 1.72;
  overflow-wrap: anywhere;
}

.content h1,
.content h2,
.content h3 {
  margin: 1.25em 0 0.45em;
  line-height: 1.3;
}

.content p,
.content ul {
  margin-bottom: 1em;
}

.content li {
  margin-bottom: 0.35em;
}

.content a {
  color: var(--accent-2);
}

.content strong {
  color: var(--text);
}

.content code {
  padding: 2px 5px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--panel-2);
  color: #d9fff4;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.92em;
}

.content pre {
  overflow-x: auto;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0b0c0f;
}

.content pre code {
  padding: 0;
  border: 0;
  background: transparent;
}

.content blockquote {
  margin: 1em 0;
  padding: 10px 14px;
  border-left: 3px solid var(--accent);
  background: rgba(99, 201, 173, 0.08);
  color: var(--muted);
}

.content hr {
  margin: 24px 0;
  border: 0;
  border-top: 1px solid var(--line);
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 16px 0 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.content table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  background: var(--panel);
  font-size: 14px;
  line-height: 1.45;
}

.content th,
.content td {
  padding: 9px 11px;
  border: 1px solid var(--line);
  vertical-align: top;
}

.content th {
  background: rgba(99, 201, 173, 0.13);
  color: var(--text);
  font-weight: 650;
}

.content tbody tr:nth-child(even) td {
  background: rgba(255, 255, 255, 0.025);
}

.empty-list {
  padding: 12px;
  color: var(--muted);
}

@media (max-width: 760px) {
  .topbar {
    align-items: flex-start;
  }

  .topbar-button {
    margin-top: 1px;
  }

  .layout {
    display: block;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .filters {
    top: 69px;
  }

  .video-list {
    max-height: 44vh;
    overflow-y: auto;
  }

  .viewer {
    padding: 14px;
  }

  .detail-head {
    display: block;
  }

  .detail-head h2 {
    font-size: 21px;
  }
}