:root {
  --bg: #0b0d12;
  --panel: #151923;
  --panel-2: #1b2130;
  --text: #f4f6fb;
  --muted: #a9b1c3;
  --accent: #7c9cff;
  --accent-2: #9fb3ff;
  --border: #2b3344;
  --danger: #ff8b8b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(124,156,255,.16), transparent 32rem),
    var(--bg);
  color: var(--text);
}

button, input, select { font: inherit; }

.app {
  width: min(1100px, calc(100% - 28px));
  margin: 0 auto;
  padding: 36px 0 60px;
}

.hero { margin-bottom: 24px; }

.eyebrow {
  color: var(--accent-2);
  letter-spacing: .16em;
  font-size: .78rem;
  font-weight: 700;
}

h1 {
  margin: 6px 0 8px;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1;
}

.lead {
  color: var(--muted);
  max-width: 700px;
  line-height: 1.6;
}

.panel {
  background: rgba(21, 25, 35, .92);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 16px 50px rgba(0,0,0,.22);
}

.controls label {
  display: grid;
  gap: 8px;
  color: var(--muted);
}

input, select {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  border-radius: 12px;
  padding: 12px 14px;
  outline: none;
}

input:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(124,156,255,.14);
}

.row, .grid {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}

.row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

button, .file-btn {
  border: 0;
  border-radius: 12px;
  padding: 12px 16px;
  cursor: pointer;
  font-weight: 700;
  text-align: center;
}

button {
  background: var(--accent);
  color: #081022;
}

button.secondary, .file-btn {
  background: #252c3c;
  color: var(--text);
  border: 1px solid var(--border);
}

button.primary {
  width: 100%;
  margin-top: 16px;
}

button.ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 8px 12px;
}

.file-btn input { display: none; }

.divider {
  height: 1px;
  background: var(--border);
  margin: 18px 0;
}

.status {
  margin: 12px 0 0;
  color: var(--muted);
  min-height: 1.4em;
}

.player-wrap { margin: 22px 0; }

.video-shell {
  position: relative;
  overflow: hidden;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: #000;
  aspect-ratio: 16 / 9;
}

video {
  width: 100%;
  height: 100%;
  display: block;
  background: #000;
}

.subtitle-overlay {
  position: absolute;
  left: 8%;
  right: 8%;
  bottom: 8%;
  text-align: center;
  font-size: clamp(1rem, 2.2vw, 1.8rem);
  line-height: 1.35;
  font-weight: 700;
  color: #fff;
  text-shadow:
    0 2px 2px #000,
    0 0 6px #000,
    0 0 14px #000;
  pointer-events: none;
}

.transcript-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.subtitle-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
  max-height: 420px;
  overflow: auto;
}

.cue {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 12px;
  padding: 12px;
  border-radius: 12px;
  background: var(--panel-2);
  border: 1px solid transparent;
  cursor: pointer;
}

.cue:hover, .cue.active { border-color: var(--accent); }
.cue-time { color: var(--accent-2); font-variant-numeric: tabular-nums; }
.cue-text { line-height: 1.45; }
.empty { color: var(--muted); }

@media (max-width: 680px) {
  .row, .grid { grid-template-columns: 1fr; }
  .cue { grid-template-columns: 72px 1fr; }
  .app { width: min(100% - 18px, 1100px); padding-top: 22px; }
}