:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --border: #2a2d3a;
  --text: #e2e8f0;
  --text-dim: #64748b;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --accent: #10b981;
  --accent-hover: #059669;
  --rec: #ef4444;
  --rec-hover: #dc2626;
  --cyan: #22d3ee;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
}

/* ---- Header ---- */
header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

h1 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--border);
  color: var(--text-dim);
}

.badge.active {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent);
}

.badge.recording {
  background: rgba(239, 68, 68, 0.15);
  color: var(--rec);
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ---- Main Layout ---- */
main {
  flex: 1;
  display: flex;
  gap: 0;
  min-height: 0;
}

/* ---- Left Panel ---- */
.panel {
  width: 280px;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
}

.card h2 {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 8px;
}

/* ---- Source Chips ---- */
.radio-group {
  display: flex;
  gap: 6px;
  margin-bottom: 8px;
}

.chip {
  cursor: pointer;
  font-size: 0.8rem;
}

.chip input {
  display: none;
}

.chip span {
  display: block;
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  transition: all 0.15s;
}

.chip input:checked + span {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(59, 130, 246, 0.1);
}

.chip input:disabled + span {
  opacity: 0.35;
  cursor: not-allowed;
}

/* ---- Volume ---- */
.volume-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.volume-row input[type="range"] {
  flex: 1;
  accent-color: var(--primary);
  height: 4px;
}

.volume-row span {
  font-size: 0.75rem;
  font-family: monospace;
  color: var(--text-dim);
  min-width: 2.5em;
  text-align: right;
}

/* ---- Buttons ---- */
.btn-row {
  display: flex;
  gap: 6px;
}

.btn {
  flex: 1;
  padding: 6px 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  background: transparent;
  color: var(--text-dim);
  transition: all 0.15s;
}

.btn:hover:not(:disabled) {
  border-color: var(--text-dim);
  color: var(--text);
}

.btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.btn-primary {
  border-color: var(--primary);
  color: var(--primary);
}
.btn-primary:hover:not(:disabled) {
  background: var(--primary);
  color: #fff;
}

.btn-accent {
  border-color: var(--accent);
  color: var(--accent);
}
.btn-accent:hover:not(:disabled) {
  background: var(--accent);
  color: #fff;
}

.btn-rec {
  border-color: var(--rec);
  color: var(--rec);
}
.btn-rec:hover:not(:disabled) {
  background: var(--rec);
  color: #fff;
}

.btn-sm {
  flex: none;
  padding: 4px 12px;
  font-size: 0.7rem;
}

/* ---- Toggle Switches ---- */
.toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  margin-bottom: 6px;
  font-size: 0.8rem;
}

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

.toggle-label {
  font-family: "SF Mono", "Fira Code", monospace;
  color: var(--text-dim);
  font-size: 0.75rem;
}

.toggle input:checked ~ .toggle-label {
  color: var(--accent);
}

.toggle input:disabled ~ .toggle-label {
  opacity: 0.35;
  cursor: not-allowed;
}

.toggle:has(input:disabled) {
  cursor: not-allowed;
}

/* ---- Details / Info ---- */
.card-details {
  font-size: 0.75rem;
}

.card-details summary {
  cursor: pointer;
  color: var(--text-dim);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.card-details pre {
  background: var(--bg);
  color: var(--text-dim);
  padding: 8px;
  border-radius: 6px;
  font-size: 0.65rem;
  margin-top: 8px;
  overflow-x: auto;
  line-height: 1.4;
  max-height: 120px;
  overflow-y: auto;
}

/* ---- Recordings ---- */
#recordings {
  margin-top: 8px;
}

.recording-entry {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
  padding: 6px 8px;
  background: var(--bg);
  border-radius: 6px;
  font-size: 0.7rem;
  color: var(--text-dim);
}

.recording-entry audio {
  height: 28px;
  flex: 1;
}

.recording-entry a {
  color: var(--primary);
  text-decoration: none;
  white-space: nowrap;
}

/* ---- Right: Visualizers ---- */
.viz {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0;
  min-width: 0;
  padding: 12px;
  overflow-y: auto;
}

.viz-block {
  margin-bottom: 12px;
}

.viz-block:last-child {
  margin-bottom: 0;
}

.viz-block:not(:has(canvas)) {
  min-height: auto;
}

.viz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.viz-title {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}

.viz-meter {
  font-family: "SF Mono", "Fira Code", monospace;
  font-size: 0.75rem;
  color: var(--cyan);
}

.viz-sub {
  font-size: 0.6rem;
  font-weight: 400;
  color: #475569;
  margin-left: 4px;
}

.tooltip-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid var(--text-dim);
  font-size: 0.55rem;
  color: var(--text-dim);
  cursor: help;
  margin-left: 4px;
  vertical-align: middle;
}

.tooltip {
  display: none;
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  width: 260px;
  padding: 8px 10px;
  background: #1e293b;
  color: #e2e8f0;
  font-size: 0.7rem;
  font-weight: 400;
  line-height: 1.5;
  border-radius: 6px;
  border: 1px solid var(--border);
  z-index: 10;
  text-transform: none;
  letter-spacing: normal;
}

.tooltip-wrap:hover .tooltip {
  display: block;
}

canvas {
  width: 100%;
  height: 120px;
  background: var(--surface);
  border-radius: 8px;
  border: 1px solid var(--border);
}

/* ---- OpenAI Realtime ---- */
.text-input {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.8rem;
  font-family: monospace;
}

.text-input:focus {
  outline: none;
  border-color: var(--primary);
}

.btn-openai {
  border-color: #a855f7;
  color: #a855f7;
}

.btn-openai:hover:not(:disabled) {
  background: #a855f7;
  color: #fff;
}

.rt-status {
  margin-top: 6px;
  font-size: 0.7rem;
  color: var(--text-dim);
  font-family: monospace;
}

.rt-status.connected {
  color: var(--accent);
}

.rt-status.error {
  color: var(--rec);
}

/* ---- Mobile ---- */
@media (max-width: 768px) {
  html, body {
    overflow: auto;
  }

  main {
    flex-direction: column;
  }

  .panel {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .viz {
    min-height: 50vh;
  }
}