:root {
  --bg: #0f0f0f;
  --surface: #181818;
  --surface-2: #212121;
  --surface-3: #272727;
  --border: #303030;
  --text: #f1f1f1;
  --text-dim: #aaaaaa;
  --text-faint: #717171;
  --red: #ff0000;
  --red-dark: #cc0000;
  --ok: #2ba640;
  --warn: #f0a500;
  --error: #e5484d;
  --accent: #3ea6ff;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: "Roboto", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 14px;
}

.app { display: flex; flex-direction: column; height: 100vh; }

/* ---------- Top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 56px;
  padding: 0 16px;
  background: var(--bg);
  border-bottom: 1px solid transparent;
  position: sticky;
  top: 0;
  z-index: 30;
}
.icon-btn {
  background: none;
  border: none;
  color: var(--text);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 0.15s ease;
}
.icon-btn:hover { background: var(--surface-2); }
.icon-btn svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 16px; white-space: nowrap; }
.brand-mark { color: var(--red); font-size: 18px; }
.searchbar { flex: 1; display: flex; justify-content: center; }
.searchbar input {
  width: min(560px, 100%);
  height: 40px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 0 16px;
  outline: none;
}
.topbar-right { display: flex; align-items: center; gap: 10px; }
.live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--red); box-shadow: 0 0 8px var(--red); }
.avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: linear-gradient(135deg, #7c3aed, #db2777);
  display: grid; place-items: center; font-weight: 600; cursor: pointer;
}

/* ---------- Body layout ---------- */
.body { display: flex; flex: 1; min-height: 0; }

/* ---------- Sidebar ---------- */
.sidebar {
  width: 220px;
  background: var(--bg);
  padding: 12px 0;
  overflow-y: auto;
  border-right: 1px solid transparent;
  transition: width 0.2s ease, transform 0.2s ease;
  display: flex;
  flex-direction: column;
}
.sidebar.collapsed { width: 72px; }
.nav { flex: 1; }
.nav-section { padding: 8px 24px 6px; font-size: 12px; font-weight: 600; color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.4px; }
.nav-item {
  display: flex; align-items: center; gap: 16px;
  padding: 9px 24px; color: var(--text); text-decoration: none; cursor: pointer;
  border-radius: 10px; margin: 0 8px;
  transition: background 0.15s ease;
}
.nav-item:hover { background: var(--surface-2); }
.nav-item.active { background: var(--surface-2); font-weight: 600; }
.nav-item svg { width: 20px; height: 20px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 1.8; }
.nav-item .dot { margin-left: auto; font-size: 9px; color: var(--ok); }
.sidebar.collapsed .nav-item span, .sidebar.collapsed .nav-section, .sidebar.collapsed .sidebar-footer { display: none; }
.sidebar-footer { padding: 12px 24px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--surface-2); border: 1px solid var(--border);
  padding: 4px 10px; border-radius: 14px; font-size: 12px; color: var(--text-dim);
  font-family: var(--mono);
}

/* ---------- Content ---------- */
.content { flex: 1; min-width: 0; overflow-y: auto; }
.view { padding: 16px 20px; }
.view.hidden { display: none; }

/* ---------- Streaming view (YouTube layout) ---------- */
.stream-grid { display: grid; grid-template-columns: 1fr 360px; gap: 20px; }
#view-live-stream { display: grid; grid-template-columns: 1fr 360px; gap: 20px; max-width: 1500px; margin: 0 auto; }
#view-live-stream.hidden { display: none; }
.player-col { min-width: 0; }

.player {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(0,0,0,0.5);
}
.player-vignette {
  position: absolute; inset: 0; pointer-events: none; z-index: 2;
  background: radial-gradient(ellipse at center, transparent 55%, rgba(0,0,0,0.55) 100%);
}
.live-badge {
  position: absolute; top: 12px; left: 12px; z-index: 5;
  display: flex; align-items: center; gap: 6px;
  background: rgba(0,0,0,0.65); color: #fff; font-size: 11px; font-weight: 700;
  letter-spacing: 1px; padding: 4px 8px; border-radius: 4px;
}
.live-pulse {
  width: 7px; height: 7px; border-radius: 50%; background: var(--red);
  animation: livePulse 1.6s ease-in-out infinite;
}
@keyframes livePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255,0,0,0.7); }
  50% { box-shadow: 0 0 0 6px rgba(255,0,0,0); }
}

.stream-log {
  position: absolute; inset: 0; z-index: 1;
  padding: 18px 16px 18px 18px;
  overflow-y: hidden;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.55;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.log-line {
  display: flex; gap: 8px; align-items: baseline;
  opacity: 0; transform: translateY(8px);
  animation: lineIn 0.28s ease forwards;
  white-space: nowrap;
}
.log-line .t { color: #4a9eff; flex-shrink: 0; }
.log-line .src { color: #b48ead; flex-shrink: 0; min-width: 90px; text-align: right; }
.log-line .msg { color: #d4d4d4; white-space: nowrap; }
.log-line.warn .msg { color: #e8c24a; }
.log-line.error .msg { color: #ff6b6b; }
.log-line .src, .log-line .t { font-size: 11px; }
@keyframes lineIn { to { opacity: 1; transform: translateY(0); } }

.captions {
  position: absolute; bottom: 16px; left: 0; right: 0; text-align: center; z-index: 4;
  color: #fff; font-size: 13px; text-shadow: 0 1px 3px rgba(0,0,0,0.8);
  pointer-events: none;
  transition: opacity 0.3s ease;
}

/* --- Player meta + actions --- */
.stream-title { font-size: 18px; font-weight: 600; margin: 14px 0 6px; }
.stream-stats { color: var(--text-dim); font-size: 13px; display: flex; gap: 12px; }
.viewers .eye { filter: grayscale(1); }
.player-actions { display: flex; gap: 8px; margin: 12px 0 4px; }
.action-btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--surface-2); color: var(--text); border: none;
  padding: 8px 14px; border-radius: 18px; cursor: pointer; font-size: 13px;
  transition: background 0.15s ease, transform 0.1s ease;
}
.action-btn:hover { background: var(--surface-3); }
.action-btn:active { transform: scale(0.96); }

/* --- Progress bar (YouTube red, draggable) --- */
.progress-wrap { display: flex; align-items: center; gap: 10px; margin-top: 6px; }
.timecode { font-family: var(--mono); font-size: 12px; color: var(--text-dim); min-width: 46px; }
.timecode:last-child { text-align: right; }
.progress-bar {
  position: relative; flex: 1; height: 18px; cursor: pointer;
  display: flex; align-items: center;
}
.progress-track { position: absolute; left: 0; right: 0; height: 4px; background: var(--surface-3); border-radius: 2px; }
.progress-buffered { position: absolute; left: 0; height: 4px; background: var(--surface-2); border-radius: 2px; width: 0; }
.progress-elapsed { position: absolute; left: 0; height: 4px; background: var(--red); border-radius: 2px; width: 0; transition: width 0.5s linear; }
.event-marks { position: absolute; left: 0; right: 0; height: 4px; }
.event-mark {
  position: absolute; top: 50%; width: 3px; height: 7px;
  transform: translate(-50%, -50%); border-radius: 2px;
}
.event-mark.info { background: #4a9eff; }
.event-mark.warn { background: var(--warn); }
.event-mark.error { background: var(--error); }
.scrubber {
  position: absolute; left: 0; top: 50%;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--red); transform: translate(-50%, -50%) scale(0);
  box-shadow: 0 0 0 4px rgba(255,0,0,0.25);
  transition: transform 0.12s ease;
  pointer-events: none;
}
.progress-bar:hover .scrubber, .progress-bar.scrubbing .scrubber { transform: translate(-50%, -50%) scale(1); }
.selection {
  position: absolute; left: 0; height: 4px; border-radius: 2px;
  background: rgba(62,166,255,0.5); display: none; top: 7px;
}
.progress-tools { display: flex; align-items: center; gap: 12px; margin: 8px 0 0 56px; }
.progress-tools .hint { color: var(--text-faint); font-size: 12px; }

/* --- Description --- */
.description {
  margin-top: 14px; background: var(--surface-2); border-radius: 12px; padding: 14px 16px;
  transition: background 0.2s ease;
}
.desc-header { font-weight: 600; margin-bottom: 8px; }
.description p { color: var(--text-dim); margin: 0; line-height: 1.5; }

/* --- Recommended sidebar --- */
.rec-col { min-width: 0; }
.rec-header { font-weight: 600; margin-bottom: 12px; }
.rec-cards { display: flex; flex-direction: column; gap: 10px; }
.rec-card {
  display: flex; gap: 10px; cursor: pointer;
  transition: opacity 0.15s ease;
}
.rec-card:hover { opacity: 0.8; }
.rec-thumb {
  width: 160px; aspect-ratio: 16/9; border-radius: 8px; flex-shrink: 0;
  background: linear-gradient(135deg, #1f2937, #111827);
  display: grid; place-items: center; color: var(--text-faint); font-size: 12px;
}
.rec-thumb.t1 { background: linear-gradient(135deg, #312e81, #111827); }
.rec-thumb.t2 { background: linear-gradient(135deg, #14532d, #111827); }
.rec-thumb.t3 { background: linear-gradient(135deg, #7c2d12, #111827); }
.rec-thumb.t4 { background: linear-gradient(135deg, #581c87, #111827); }
.rec-meta { min-width: 0; }
.rec-title { font-size: 13px; font-weight: 500; margin-bottom: 4px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.rec-sub { font-size: 12px; color: var(--text-faint); }

/* ---------- Panel detail view ---------- */
.panel-view { max-width: 900px; margin: 0 auto; }
.panel-header { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.panel-header h1 { font-size: 22px; margin: 0; }
.panel-header p { color: var(--text-dim); margin: 4px 0 0; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.card .label { color: var(--text-faint); font-size: 12px; text-transform: uppercase; letter-spacing: 0.4px; margin-bottom: 8px; }
.card .value { font-size: 18px; font-weight: 600; }
.card .value.tone-ok { color: var(--ok); }
.card .value.tone-error { color: var(--error); }
.card .value.tone-warn { color: var(--warn); }
.settings-list { display: flex; flex-direction: column; gap: 10px; margin-top: 16px; }
.setting-row { display: flex; align-items: center; gap: 12px; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; }
.setting-row label { flex: 1; }
.setting-row input, .setting-row select { background: var(--surface-2); color: var(--text); border: 1px solid var(--border); border-radius: 6px; padding: 6px 8px; }
.setting-row input[type="checkbox"] { width: 18px; height: 18px; }
table.data-table { width: 100%; border-collapse: collapse; margin-top: 16px; }
.data-table th, .data-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 13px; }
.data-table th { color: var(--text-faint); font-size: 12px; text-transform: uppercase; letter-spacing: 0.4px; }
.data-table td.mono { font-family: var(--mono); }

/* ---------- Tooltip (timeline hover) ---------- */
.tooltip {
  position: fixed; z-index: 100; pointer-events: none;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 10px; max-width: 340px;
  font-family: var(--mono); font-size: 11.5px; line-height: 1.5;
  display: none; box-shadow: 0 6px 24px rgba(0,0,0,0.5);
}
.tooltip .tt-time { color: var(--accent); margin-bottom: 4px; }
.tooltip .tt-line { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tooltip .tt-line.warn { color: #e8c24a; }
.tooltip .tt-line.error { color: #ff6b6b; }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  #view-live-stream { grid-template-columns: 1fr; }
  .rec-col { display: none; }
}
@media (max-width: 720px) {
  .sidebar { position: fixed; z-index: 40; height: 100%; transform: translateX(-100%); width: 220px; }
  .sidebar.open { transform: translateX(0); }
  .sidebar.collapsed { width: 220px; }
  .sidebar.collapsed .nav-item span, .sidebar.collapsed .nav-section { display: inline; }
}