:root {
  --bg: #0f1320;
  --card: #1a1f33;
  --accent: #6c8eff;
  --accent-hover: #5478ff;
  --text: #e7eaf6;
  --muted: #8a91a8;
  --good: #4ade80;
  --warn: #f59e0b;
  --bar: #2a3050;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: linear-gradient(140deg, #0c0f1c 0%, #1a1230 100%);
  color: var(--text);
  min-height: 100vh;
}

a { color: #fff; }

main.card {
  max-width: 720px;
  margin: 40px auto;
  background: var(--card);
  padding: 32px;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.top {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 16px;
}

h1 {
  margin: 0;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
}

.controls {
  display: flex;
  gap: 10px;
  margin: 0 0 14px;
}

.controls button { flex: 1 1 auto; }
.controls button.primary { flex: 2 1 auto; }

.audio-source {
  background: #1f243d;
  border: 1px solid #2a3050;
  border-radius: 10px;
  margin: 0 0 14px;
  overflow: hidden;
}

.audio-source > summary {
  list-style: none;
  cursor: pointer;
  padding: 10px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  user-select: none;
}

.audio-source > summary::-webkit-details-marker { display: none; }

.audio-source > summary::after {
  content: "▾";
  color: var(--muted);
  font-size: 0.75rem;
  transition: transform 0.15s;
}

.audio-source[open] > summary::after { transform: rotate(180deg); }

.summary-title { font-weight: 600; color: var(--text); }
.summary-meta {
  color: var(--muted);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
}

.source-body {
  padding: 4px 14px 14px;
  border-top: 1px solid #2a3050;
}

.source-hint {
  margin: 10px 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.mode-toggle {
  display: flex;
  gap: 8px;
  margin: 0 0 12px;
}

.mode-toggle .mode-btn { flex: 1 1 0; }

.mode-btn {
  background: #232842;
  color: var(--text);
  padding: 6px 14px;
  font-size: 0.85rem;
  border-radius: 6px;
  border: 1px solid #2f3656;
}

.mode-btn:hover:not(.active) {
  background: #2a3050;
}

.mode-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.gain-wrap { margin: 0; }

.gain-label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 6px;
}

#gainReadout {
  color: var(--text);
  font-weight: 600;
}

#gainSlider {
  width: 100%;
  accent-color: var(--accent);
}

.meter-sub {
  float: right;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  font-weight: 600;
}

button {
  background: var(--accent);
  color: white;
  border: none;
  padding: 12px 22px;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.15s;
}

button:hover:not(:disabled) { background: var(--accent-hover); }

button:disabled {
  background: #3a3f55;
  cursor: not-allowed;
  opacity: 0.6;
}

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

.results {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

.result-box {
  background: #232842;
  padding: 20px;
  border-radius: 10px;
  text-align: center;
}

.result-label {
  font-size: 0.85rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.result-value {
  font-size: 2.2rem;
  font-weight: 600;
  margin-top: 6px;
  color: var(--text);
}

.result-sub {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 4px;
  min-height: 1em;
}

.camelot-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  background: #818cf8;
  color: #1e0a5c;
  transition: background 0.2s;
}

.camelot-badge[data-mode="A"] {
  background: #a78bfa;
}

.camelot-badge[data-mode="B"] {
  background: #818cf8;
}

.camelot-code {
  font-weight: 700;
  letter-spacing: 0.02em;
}

.camelot-trad {
  font-weight: 400;
  opacity: 0.75;
  font-size: 0.85em;
}

.meter-wrap { margin: 12px 0 18px; }

.meter-label {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 6px;
}

.meter {
  height: 8px;
  background: var(--bar);
  border-radius: 4px;
  overflow: hidden;
}

.level-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--good), var(--warn));
  transition: width 0.08s linear;
}

canvas {
  width: 100%;
  height: 120px;
  background: #131829;
  border-radius: 8px;
  display: block;
}

.caption {
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
  margin-top: 6px;
}

.about {
  margin-top: 24px;
  font-size: 0.9rem;
  color: var(--muted);
}

.about summary {
  cursor: pointer;
  color: var(--accent);
}

.about ul { padding-left: 20px; }

.about li { margin: 6px 0; }

@media (max-width: 560px) {
  main.card {
    margin: 0;
    padding: 18px 16px 24px;
    border-radius: 0;
    box-shadow: none;
    min-height: 100vh;
  }
  h1 { font-size: 1.25rem; }
  .controls { gap: 8px; }
  button { padding: 11px 14px; font-size: 0.95rem; }
  .results { grid-template-columns: 1fr; gap: 12px; }
  .result-value { font-size: 1.9rem; }
  .summary-meta { font-size: 0.8rem; }
}

footer {
  margin-top: 22px;
  font-size: 0.75rem;
  color: var(--muted);
  text-align: center;
}
	  
.socials {
  margin-top: 22px;
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.social {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
  display: grid;
  place-items: center;
  font-size: 1.2rem;
  text-decoration: none;
  color: var(--text);
  transition: transform .12s ease, border-color .12s ease, background .12s ease;
}

.social:hover {
  transform: translateY(-1px);
  border-color: rgba(56,189,248,0.5);
  background: rgba(56,189,248,0.12);
}