:root {
  --bg: #0b0f17;
  --card: #121826;
  --line: #232c40;
  --text: #dbe4f5;
  --muted: #77839c;
  --accent: #4f8cff;
  --good: #35d49a;
  --bad: #ff6b6b;
  --amber: #ffc266;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
header { padding: 20px 24px 8px; }
h1 { margin: 0; font-size: 22px; letter-spacing: .3px; }
.tagline { color: var(--muted); margin: 6px 0 10px; }
.badge {
  display: inline-block; padding: 2px 10px; border-radius: 999px;
  background: #1b2436; border: 1px solid var(--line); color: var(--accent);
  font-size: 12px; font-weight: 600;
}
main { padding: 0 24px 12px; max-width: 1020px; margin: 0 auto; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 14px 16px; margin-bottom: 14px;
}
.row { display: flex; gap: 14px; flex-wrap: wrap; align-items: stretch; }
.row > .card { margin-bottom: 14px; }
.row { margin-bottom: 0; }
.panel { flex: 2 1 420px; min-width: 300px; }
.panel.narrow { flex: 1 1 220px; }
h2 { font-size: 13px; text-transform: uppercase; letter-spacing: .8px; color: var(--muted); margin: 0 0 8px; }
h2 .hint { text-transform: none; letter-spacing: 0; font-weight: 400; font-size: 11px; }
canvas { width: 100%; height: auto; display: block; background: #0d1320; border: 1px solid var(--line); border-radius: 8px; }
button {
  background: #1b2436; color: var(--text); border: 1px solid var(--line);
  border-radius: 8px; padding: 9px 18px; font-size: 14px; cursor: pointer;
}
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
button:disabled { opacity: .45; cursor: not-allowed; }
.sliders { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 12px; }
.sliders label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--muted); min-width: 180px; flex: 1; }
.sliders output { color: var(--text); font-weight: 600; font-variant-numeric: tabular-nums; }
input[type=range] { width: 100%; accent-color: var(--accent); }
#probBarWrap { position: relative; height: 18px; background: #0d1320; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
#probFill { height: 100%; width: 0%; background: linear-gradient(90deg, #2b5fd9, var(--accent)); transition: width 60ms linear; }
#probMark { position: absolute; top: -3px; bottom: -3px; width: 2px; background: var(--amber); left: 50%; }
#probNum { font-size: 22px; font-weight: 700; font-variant-numeric: tabular-nums; margin-top: 8px; }
#stateChip {
  display: inline-block; margin-top: 8px; padding: 3px 12px; border-radius: 999px;
  font-size: 12px; font-weight: 700; letter-spacing: 1px;
  background: #1b2436; color: var(--muted); border: 1px solid var(--line);
}
#stateChip.speech { background: rgba(53,212,154,.15); color: var(--good); border-color: var(--good); }
#stateChip.silence { background: rgba(255,194,102,.12); color: var(--amber); border-color: var(--amber); }
#stats { width: 100%; border-collapse: collapse; }
#stats td { padding: 6px 4px; border-bottom: 1px solid var(--line); font-variant-numeric: tabular-nums; }
#stats td:first-child { color: var(--muted); }
#stats td:last-child { text-align: right; font-weight: 600; }
#log { list-style: none; margin: 0; padding: 0; max-height: 220px; overflow-y: auto; font-size: 13px; font-variant-numeric: tabular-nums; }
#log li { padding: 4px 2px; border-bottom: 1px solid var(--line); }
#log li .t { color: var(--muted); margin-right: 8px; }
#log li.start .ev { color: var(--good); font-weight: 600; }
#log li.end .ev { color: var(--accent); font-weight: 600; }
#log li .meta { color: var(--muted); }
.muted { color: var(--muted); }
footer { padding: 8px 24px 28px; color: var(--muted); font-size: 12.5px; max-width: 1020px; margin: 0 auto; }
footer a { color: var(--accent); }
footer code { background: #1b2436; padding: 1px 5px; border-radius: 4px; font-size: 11.5px; }
#loadOverlay {
  position: fixed; inset: 0; background: rgba(5,8,14,.82); display: flex;
  align-items: center; justify-content: center; z-index: 10; backdrop-filter: blur(3px);
}
#loadOverlay > div { text-align: center; }
#loadOverlay progress { width: 260px; height: 10px; accent-color: var(--accent); }
#loadFile { font-size: 12px; margin-top: 6px; max-width: 320px; overflow: hidden; text-overflow: ellipsis; }
.hidden { display: none !important; }
@media (max-width: 700px) { header, main, footer { padding-left: 14px; padding-right: 14px; } }