:root {
  color-scheme: dark;
  --bg: #0b1020;
  --panel: #121932;
  --panel-2: #1a2447;
  --text: #edf2ff;
  --muted: #a5b4d4;
  --primary: #5eead4;
  --primary-2: #2dd4bf;
  --danger: #fb7185;
  --border: rgba(255,255,255,0.08);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  background: radial-gradient(circle at top, #18244b 0%, var(--bg) 45%);
  color: var(--text);
}

.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

header h1 { margin: 0 0 8px; font-size: 2rem; }
.sub { margin: 0 0 24px; color: var(--muted); }
.card {
  background: rgba(18, 25, 50, 0.9);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}
.controls { margin-bottom: 20px; }
.mode-switch {
  display: inline-grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 16px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  padding: 6px;
  border-radius: 14px;
}
.mode-btn {
  background: transparent;
}
.mode-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #06231f;
  border: none;
}
.mode-help {
  margin: 14px 0 0;
  color: var(--muted);
}
.ptt-panel {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.ptt-panel.hidden {
  display: none;
}
.ptt-title {
  margin: 0 0 10px;
  font-weight: 700;
}
.ptt-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.ptt-buttons button.active {
  outline: 2px solid var(--primary);
  background: rgba(94,234,212,0.12);
}
.ptt-buttons button.pressing {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #06231f;
  border: none;
  transform: translateY(1px);
}
.field-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}
label span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.95rem;
}
select, button {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  padding: 12px 14px;
  font-size: 1rem;
}
.buttons {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}
button {
  cursor: pointer;
  font-weight: 700;
}
button.primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #06231f;
  border: none;
}
button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.status {
  margin: 14px 0 0;
  color: var(--primary);
}
.columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.transcript {
  min-height: 280px;
  white-space: pre-wrap;
  line-height: 1.55;
  color: var(--text);
}
.transcript .muted {
  color: var(--muted);
}
.tips { margin-top: 20px; }
ul { margin-bottom: 0; color: var(--muted); }

@media (max-width: 800px) {
  .columns { grid-template-columns: 1fr; }
}