:root {
  --bg: #fafafa;
  --card: #ffffff;
  --text: #1c1c1c;
  --muted: #666666;
  --accent: #0d7a5f;
  --accent-soft: rgba(13, 122, 95, 0.18);
  --border: #e0e0e0;
  --wave: #37474f;
  --event: rgba(13, 122, 95, 0.25);
  --event-border: rgba(13, 122, 95, 0.8);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181a;
    --card: #1f2225;
    --text: #e8e8e8;
    --muted: #9a9a9a;
    --accent: #35c39e;
    --accent-soft: rgba(53, 195, 158, 0.2);
    --border: #33383c;
    --wave: #b0bec5;
    --event: rgba(53, 195, 158, 0.22);
    --event-border: rgba(53, 195, 158, 0.85);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0 auto;
  max-width: 900px;
  padding: 1.5rem 1rem 3rem;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

header h1 {
  margin: 0;
  font-size: 2.2rem;
}

.accent { color: var(--accent); }

.tagline {
  margin-top: 0.3rem;
  color: var(--muted);
  max-width: 42rem;
}

a { color: var(--accent); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.2rem;
  margin: 1rem 0;
}

#dropzone {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 1.4rem;
  text-align: center;
  transition: border-color 0.15s, background 0.15s;
}

#dropzone.dragover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

#dropzone p { margin: 0.4rem 0; }

#file-input { display: none; }

.button {
  display: inline-block;
  border: 1px solid var(--accent);
  color: var(--accent);
  background: transparent;
  border-radius: 6px;
  padding: 0.25rem 0.7rem;
  font: inherit;
  font-size: 0.92rem;
  cursor: pointer;
}

.button:hover { background: var(--accent-soft); }

.button.recording {
  color: #d33;
  border-color: #d33;
  animation: pulse 1.2s infinite;
}

@keyframes pulse {
  50% { opacity: 0.55; }
}

#status { color: var(--muted); margin: 0.6rem 0 0; }
#status.error { color: #d33; }

.io-options {
  font-size: 0.88rem;
  color: var(--muted);
}

.io-options select {
  font: inherit;
  padding: 0.15rem;
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
}

#live-meter {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-top: 0.7rem;
  font-variant-numeric: tabular-nums;
}

#live-meter[hidden] { display: none; }

#live-time { color: var(--muted); min-width: 4rem; }

#live-track {
  flex: 1;
  height: 10px;
  border: 1px solid var(--border);
  border-radius: 5px;
  overflow: hidden;
  background: var(--bg);
}

#live-bar {
  height: 100%;
  width: 0%;
  background: var(--muted);
  transition: width 0.06s linear;
}

#live-meter.valid #live-bar { background: var(--accent); }

#live-flag {
  font-size: 0.85rem;
  color: var(--muted);
  opacity: 0.35;
  transition: opacity 0.1s;
}

#live-meter.valid #live-flag {
  color: var(--accent);
  opacity: 1;
  font-weight: 600;
}

#controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.8rem 1.4rem;
}

.control label {
  display: block;
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 0.15rem;
}

.control output { color: var(--text); font-weight: 600; }

.control input[type="range"], .control select {
  width: 100%;
  accent-color: var(--accent);
}

.control select {
  font: inherit;
  padding: 0.2rem;
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
}

#detection-summary {
  margin: 0.8rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

#waveform {
  width: 100%;
  display: block;
  cursor: pointer;
}

.hint {
  margin: 0.5rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

#events-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

#events-header h2 { margin: 0 0 0.5rem; font-size: 1.1rem; }

#events-table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

#events-table th, #events-table td {
  text-align: right;
  padding: 0.25rem 0.6rem;
  border-bottom: 1px solid var(--border);
}

#events-table th:first-child, #events-table td:first-child {
  text-align: left;
  width: 2rem;
}

#events-table tbody tr { cursor: pointer; }
#events-table tbody tr:hover { background: var(--accent-soft); }
#events-table tbody tr.playing { background: var(--accent-soft); }

footer {
  margin-top: 2rem;
  font-size: 0.85rem;
  color: var(--muted);
}