:root {
  --bg: #14151a;
  --panel: #1e2027;
  --panel-2: #282b35;
  --line: #363a47;
  --text: #f1f2f5;
  --muted: #9aa0ae;
  --accent: #ffb020;
  --accent-text: #1a1300;
  --danger: #ff5d5d;
  --ok: #4cd08a;
  --radius: 14px;
  --tap: 52px;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 17px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
a { color: var(--accent); text-decoration: none; }
h1 { font-size: 24px; margin: 0 0 12px; }
h2 { font-size: 19px; margin: 24px 0 10px; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.error { color: var(--danger); }
.ok { color: var(--ok); }
.hidden { display: none !important; }

#topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: calc(8px + env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) 8px max(16px, env(safe-area-inset-left));
  border-bottom: 1px solid var(--line);
}
#topbar .brand { font-weight: 700; font-size: 20px; color: var(--text); padding: 8px 0; }
#topbar nav a { display: inline-block; padding: 10px 14px; color: var(--muted); }
body.immersive #topbar { display: none; }

main {
  padding: 16px max(16px, env(safe-area-inset-right)) calc(24px + env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
  max-width: 1200px; margin: 0 auto;
}
body.immersive main { max-width: none; padding: 0; }

button, .btn, input, select { font: inherit; color: inherit; }
button, .btn {
  min-height: var(--tap); min-width: var(--tap);
  padding: 0 18px;
  background: var(--panel-2); border: 1px solid var(--line); border-radius: var(--radius);
  cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  user-select: none; -webkit-user-select: none;
}
button:active, .btn:active { filter: brightness(1.25); }
button:disabled { opacity: .45; cursor: default; }
button.primary, .btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 650; }
button.danger { color: var(--danger); }
button.on { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
button.ghost { background: transparent; }
button.compact { min-height: 44px; min-width: 44px; padding: 0 12px; font-size: 15px; }

input[type=text], input[type=url], input[type=password], input[type=number], select {
  min-height: var(--tap); padding: 0 14px; width: 100%;
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
}
input[type=range] { width: 100%; height: 44px; accent-color: var(--accent); margin: 0; }
label { display: block; }

.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row.nowrap { flex-wrap: nowrap; }
.grow { flex: 1 1 0; min-width: 0; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.stack > * + * { margin-top: 12px; }

/* Library */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; color: var(--text); }
.card .thumb { aspect-ratio: 16 / 9; background: #000 center / cover no-repeat; display: flex; align-items: center; justify-content: center; color: var(--muted); }
.card .body { padding: 12px; flex: 1; }
.card .title { font-weight: 600; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.card .actions { padding: 0 12px 12px; }
.bar { height: 8px; background: var(--panel-2); border-radius: 4px; overflow: hidden; margin-top: 8px; }
.bar > div { height: 100%; background: var(--accent); transition: width .5s; }

/* Reference + sections */
.player { width: 100%; max-height: 52vh; background: #000; border-radius: var(--radius); display: block; }
.timebox { font-variant-numeric: tabular-nums; font-size: 20px; min-width: 5.5em; text-align: center; }
.section-item { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; padding: 10px 0; border-top: 1px solid var(--line); }
.section-item:first-child { border-top: 0; }
.track { position: relative; height: 14px; background: var(--panel-2); border-radius: 7px; }
.track .band { position: absolute; top: 0; bottom: 0; background: var(--accent); opacity: .55; border-radius: 7px; }
.track .head { position: absolute; top: -4px; bottom: -4px; width: 3px; background: #fff; border-radius: 2px; }

/* Login */
.login { max-width: 360px; margin: 12vh auto 0; }

/* Toast */
#toast {
  position: fixed; left: 50%; bottom: calc(24px + env(safe-area-inset-bottom)); transform: translateX(-50%);
  background: #000d; border: 1px solid var(--line); padding: 12px 18px; border-radius: var(--radius);
  max-width: 90vw; opacity: 0; pointer-events: none; transition: opacity .2s; z-index: 50;
}
#toast.show { opacity: 1; }

/* Record */
.record { position: fixed; inset: 0; background: #000; }
.record video.preview { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; transform: scaleX(-1); }
.record video.ref {
  position: absolute; right: max(12px, env(safe-area-inset-right)); top: calc(12px + env(safe-area-inset-top));
  width: 30vw; max-width: 360px; max-height: 40vh; border-radius: 10px; border: 2px solid #fff5; background: #000;
}
.record .count {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-size: 40vh; font-weight: 800; color: #fff; text-shadow: 0 0 40px #000; pointer-events: none;
}
.record .hud {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 14px max(16px, env(safe-area-inset-right)) calc(14px + env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
  background: linear-gradient(transparent, #000c);
}
.record .hud .panel { background: #1e2027e6; }
.record .status { position: absolute; left: max(16px, env(safe-area-inset-left)); top: calc(16px + env(safe-area-inset-top)); background: #000a; padding: 8px 14px; border-radius: 10px; }
.rec-dot { display: inline-block; width: 12px; height: 12px; border-radius: 50%; background: var(--danger); margin-right: 8px; animation: blink 1s infinite; }
@keyframes blink { 50% { opacity: .2; } }
button.rec { background: var(--danger); border-color: var(--danger); color: #fff; font-weight: 700; min-height: 64px; padding: 0 32px; font-size: 20px; }

/* Compare */
.compare { display: flex; flex-direction: column; height: 100dvh; background: #000; }
.compare .videos { flex: 1 1 0; min-height: 0; display: flex; gap: 2px; }
.compare .pane { flex: 1 1 0; min-width: 0; min-height: 0; position: relative; background: #000; }
.compare .pane video { width: 100%; height: 100%; object-fit: contain; display: block; }
.compare .pane video.mirror { transform: scaleX(-1); }
.compare .pane .tag { position: absolute; left: 8px; top: 8px; background: #000a; padding: 4px 10px; border-radius: 8px; font-size: 14px; }
.compare .pane .mirror-btn { position: absolute; right: 8px; top: 8px; background: #000a; }
.compare .pane .mirror-btn.on { background: var(--accent); }
.compare .controls {
  background: var(--panel); border-top: 1px solid var(--line);
  padding: 8px max(12px, env(safe-area-inset-right)) calc(8px + env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
}
.compare .controls .row { margin-top: 6px; }
.compare .controls label.inline { display: flex; align-items: center; gap: 8px; flex: 1 1 220px; min-width: 0; }
.compare .controls label.inline span { white-space: nowrap; font-variant-numeric: tabular-nums; flex: none; min-width: 8.2em; }
@media (orientation: portrait) {
  .compare .videos { flex-direction: column; }
}
.sheet { position: fixed; inset: 0; background: #000a; z-index: 40; display: flex; align-items: flex-end; justify-content: center; }
.sheet > .panel { width: min(640px, 100%); max-height: 80dvh; overflow: auto; border-radius: var(--radius) var(--radius) 0 0; padding-bottom: calc(14px + env(safe-area-inset-bottom)); }
.take-item { display: flex; gap: 10px; align-items: center; padding: 8px 0; border-top: 1px solid var(--line); }
.take-item:first-of-type { border-top: 0; }