:root {
  --bg: #0f172a;
  --card: #111827;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --accent: #22c55e;
  --danger: #ef4444;
  --border: #1f2937;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px;
}

h1 { margin: 10px 0 6px; }
.subhead { color: var(--muted); margin: 0 0 14px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
}

.label {
  display: block;
  margin: 10px 0 6px;
  color: var(--muted);
  font-size: 14px;
}

.input, .textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: #0b1220;
  color: var(--text);
  padding: 12px;
  border-radius: 10px;
  outline: none;
}

.textarea { resize: vertical; }

.row {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 12px;
}

.record, .stop, .submit {
  border: 0;
  border-radius: 12px;
  padding: 12px 14px;
  color: #0b1220;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  justify-content: center;
  align-items: center;
}

.record {
  flex: 1;
  background: var(--accent);
  font-size: 18px;
  padding: 16px 14px;
}

.stop {
  width: 120px;
  background: #f59e0b;
}

.submit {
  flex: 1;
  background: #60a5fa;
}

.record:disabled, .stop:disabled, .submit:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.toggleRow {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 12px;
  color: var(--muted);
}

.dateRow { margin-top: 8px; }

.hidden { display: none; }

.status {
  flex: 2;
  color: var(--muted);
  font-size: 14px;
}

.status.ok { color: var(--muted); }
.status.error { color: #fecaca; }

.hint {
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
}

.footer {
  margin-top: 14px;
  color: var(--muted);
  font-size: 14px;
}
.footer a { color: #93c5fd; }