/* ── C05 · neon theme (shared with Clipper/Shifter/Splicer) ─────────────── */

:root {
  --bg: #0a0e17;
  --bg-2: #0d1322;
  --cyan: #00f0ff;
  --magenta: #ff2d95;
  --violet: #7b5cff;
  --ink: #e8f4ff;
  --ink-dim: #7d8aa5;
  --card-bg: rgba(255, 255, 255, 0.03);
  --card-border: rgba(0, 240, 255, 0.16);
  --glow-cyan: 0 0 12px rgba(0, 240, 255, 0.45);
  --glow-magenta: 0 0 12px rgba(255, 45, 149, 0.45);
  --glow-violet: 0 0 12px rgba(123, 92, 255, 0.5);
  --font: "SF Mono", "Cascadia Code", ui-monospace, "Segoe UI Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  overscroll-behavior-y: none;
}

body {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
  background:
    radial-gradient(1200px 500px at 50% -10%, rgba(123, 92, 255, 0.14), transparent 60%),
    radial-gradient(900px 400px at 85% 110%, rgba(255, 45, 149, 0.10), transparent 60%),
    radial-gradient(900px 400px at 10% 100%, rgba(0, 240, 255, 0.08), transparent 60%),
    var(--bg);
}

.bg-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 240, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 30%, transparent 100%);
}

/* ── Header ── */

.app-header {
  text-align: center;
  padding: 26px 16px 8px;
  position: relative;
}

.logo {
  width: 44px;
  height: 44px;
  filter: drop-shadow(0 0 6px rgba(0, 240, 255, 0.6));
}

.app-header h1 {
  margin: 6px 0 2px;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.55em;
  text-indent: 0.55em; /* recenters letter-spaced text */
  color: var(--ink);
  text-shadow: 0 0 14px rgba(0, 240, 255, 0.55), 0 0 40px rgba(0, 240, 255, 0.2);
}

.tagline {
  margin: 0;
  font-size: 10px;
  letter-spacing: 0.4em;
  text-indent: 0.4em;
  color: var(--ink-dim);
}

/* ── Layout ── */

main {
  flex: 1;
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
  padding: 14px 14px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 16px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.25), 0 10px 30px rgba(0, 0, 0, 0.35);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.card-title {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.3em;
  text-indent: 0.3em;
  color: var(--ink-dim);
}

[hidden] { display: none !important; }

/* ── Buttons ── */

.btn {
  font-family: inherit;
  font-size: 13px;
  letter-spacing: 0.25em;
  text-indent: 0.25em;
  padding: 13px 18px;
  border-radius: 12px;
  cursor: pointer;
  transition: box-shadow 0.2s, background 0.2s, transform 0.1s, opacity 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.45; pointer-events: none; }

.btn-outline {
  background: rgba(0, 240, 255, 0.06);
  border: 1px solid rgba(0, 240, 255, 0.45);
  color: var(--cyan);
  text-shadow: 0 0 8px rgba(0, 240, 255, 0.5);
}

.btn-outline:hover { box-shadow: var(--glow-cyan); }

.btn-primary {
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.9), rgba(123, 92, 255, 0.9) 55%, rgba(255, 45, 149, 0.9));
  border: none;
  color: #04070d;
  font-weight: 700;
  width: 100%;
  box-shadow: 0 0 18px rgba(0, 240, 255, 0.35), 0 0 34px rgba(255, 45, 149, 0.2);
}

.btn-primary:hover {
  box-shadow: 0 0 26px rgba(0, 240, 255, 0.55), 0 0 48px rgba(255, 45, 149, 0.35);
}

.btn-play-icon {
  width: 0;
  height: 0;
  border-left: 9px solid currentColor;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  filter: drop-shadow(0 0 4px rgba(0, 240, 255, 0.7));
}

/* ── Switch ── */

.switch {
  position: relative;
  display: flex;
  align-items: center;
  gap: 9px;
  cursor: pointer;
  flex-shrink: 0;
}

.switch input {
  position: absolute;
  width: 38px;
  height: 22px;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.switch-track {
  pointer-events: none;
  width: 38px;
  height: 22px;
  border-radius: 999px;
  border: 1px solid rgba(125, 138, 165, 0.5);
  background: rgba(0, 0, 0, 0.4);
  position: relative;
  transition: border-color 0.2s, box-shadow 0.2s;
  flex-shrink: 0;
}

.switch-track::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink-dim);
  transition: transform 0.2s, background 0.2s, box-shadow 0.2s;
}

.switch input:focus-visible + .switch-track {
  box-shadow: var(--glow-cyan);
}

.switch input:checked + .switch-track {
  border-color: var(--cyan);
  box-shadow: inset 0 0 8px rgba(0, 240, 255, 0.25);
}

.switch input:checked + .switch-track::after {
  transform: translateX(16px);
  background: var(--cyan);
  box-shadow: 0 0 8px rgba(0, 240, 255, 0.8);
}

.switch-label {
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--ink);
}

.control-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

/* ── Wheel card ── */

.wheel-wrap {
  width: 100%;
  max-width: 380px;
  margin: 0 auto;
}

#wheel { width: 100%; height: auto; display: block; overflow: visible; }

.wedge { cursor: pointer; outline: none; }

.major-slice,
.minor-slice {
  fill: rgba(255, 255, 255, 0.035);
  stroke: rgba(0, 240, 255, 0.14);
  stroke-width: 1;
  transition: fill 0.2s, stroke 0.2s, filter 0.2s;
}

.minor-slice { fill: rgba(255, 255, 255, 0.02); }

.wedge:hover .major-slice,
.wedge:focus-visible .major-slice {
  stroke: rgba(0, 240, 255, 0.5);
}

.major-label {
  font-family: var(--font);
  font-size: 13px;
  font-weight: 700;
  fill: var(--ink);
  letter-spacing: 0.02em;
  pointer-events: none;
  transition: fill 0.2s, filter 0.2s;
}

.minor-label {
  font-family: var(--font);
  font-size: 10px;
  fill: var(--ink-dim);
  pointer-events: none;
  transition: fill 0.2s, filter 0.2s;
}

.wedge.selected .major-slice {
  fill: rgba(0, 240, 255, 0.22);
  stroke: var(--cyan);
  filter: drop-shadow(0 0 6px rgba(0, 240, 255, 0.65));
}

.wedge.selected .minor-slice {
  fill: rgba(0, 240, 255, 0.12);
  stroke: rgba(0, 240, 255, 0.55);
}

.wedge.selected .major-label { fill: var(--cyan); filter: drop-shadow(0 0 4px rgba(0, 240, 255, 0.8)); }
.wedge.selected .minor-label { fill: var(--cyan); }

.wedge.dominant .major-slice {
  stroke: var(--magenta);
  stroke-width: 2;
  filter: drop-shadow(0 0 6px rgba(255, 45, 149, 0.6));
}

.wedge.dominant .major-label { fill: var(--magenta); }

.wedge.subdominant .major-slice {
  stroke: var(--violet);
  stroke-width: 2;
  filter: drop-shadow(0 0 6px rgba(123, 92, 255, 0.6));
}

.wedge.subdominant .major-label { fill: var(--violet); }

.wheel-center-name {
  font-family: var(--font);
  font-size: 28px;
  font-weight: 700;
  fill: var(--ink);
  text-shadow: none;
  filter: drop-shadow(0 0 10px rgba(0, 240, 255, 0.5));
  pointer-events: none;
}

.wheel-center-sub {
  font-family: var(--font);
  font-size: 10px;
  letter-spacing: 0.3em;
  fill: var(--ink-dim);
  pointer-events: none;
}

.wheel-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 16px;
  font-size: 9px;
  letter-spacing: 0.12em;
  color: var(--ink-dim);
}

.wheel-legend span { display: inline-flex; align-items: center; gap: 5px; }

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.legend-dot.tonic { background: var(--cyan); box-shadow: 0 0 6px rgba(0, 240, 255, 0.8); }
.legend-dot.dominant { background: var(--magenta); box-shadow: 0 0 6px rgba(255, 45, 149, 0.8); }
.legend-dot.subdominant { background: var(--violet); box-shadow: 0 0 6px rgba(123, 92, 255, 0.8); }

/* ── Key info panel ── */

.key-facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 12px;
}

.key-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.key-fact.wide { grid-column: 1 / -1; }

.key-fact-label {
  font-size: 9px;
  letter-spacing: 0.25em;
  text-indent: 0.25em;
  color: var(--ink-dim);
}

.key-fact-value {
  font-size: 15px;
  color: var(--ink);
}

.key-fact-value.accent-cyan { color: var(--cyan); text-shadow: 0 0 8px rgba(0, 240, 255, 0.5); }
.key-fact-value.accent-magenta { color: var(--magenta); text-shadow: 0 0 8px rgba(255, 45, 149, 0.5); }
.key-fact-value.accent-violet { color: var(--violet); text-shadow: 0 0 8px rgba(123, 92, 255, 0.5); }

/* ── Scale header / mode select ── */

.scale-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.mode-select {
  font-family: inherit;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-indent: 0.2em;
  color: var(--cyan);
  text-shadow: 0 0 8px rgba(0, 240, 255, 0.5);
  background: rgba(0, 240, 255, 0.06);
  border: 1px solid rgba(0, 240, 255, 0.4);
  border-radius: 9px;
  padding: 7px 28px 7px 12px;
  cursor: pointer;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2300f0ff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  background-size: 14px;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.mode-select:hover,
.mode-select:focus-visible {
  box-shadow: var(--glow-cyan);
  border-color: var(--cyan);
}

.mode-select option {
  background: var(--bg-2);
  color: var(--ink);
}

/* ── Scale table ── */

.scale-table {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.scale-row {
  display: grid;
  grid-template-columns: 28px 44px 1fr;
  align-items: center;
  gap: 10px;
  padding: 9px 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  background: transparent;
  border-left: none;
  border-right: none;
  border-top: none;
  font-family: inherit;
  color: var(--ink);
  cursor: pointer;
  text-align: left;
  transition: background 0.15s;
}

.scale-row:last-child { border-bottom: none; }
.scale-row:hover, .scale-row:focus-visible { background: rgba(0, 240, 255, 0.06); outline: none; }
.scale-row:active { background: rgba(0, 240, 255, 0.14); }

.scale-degree-num {
  font-size: 13px;
  color: var(--ink-dim);
  font-variant-numeric: tabular-nums;
}

.scale-note {
  font-size: 17px;
  font-weight: 700;
}

.scale-degree-name {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-dim);
}

.scale-row.deg-1 .scale-note { color: var(--cyan); text-shadow: 0 0 8px rgba(0, 240, 255, 0.6); }
.scale-row.deg-1 .scale-degree-num { color: var(--cyan); }
.scale-row.deg-3 .scale-note { color: var(--violet); text-shadow: 0 0 8px rgba(123, 92, 255, 0.6); }
.scale-row.deg-3 .scale-degree-num { color: var(--violet); }
.scale-row.deg-5 .scale-note { color: var(--magenta); text-shadow: 0 0 8px rgba(255, 45, 149, 0.6); }
.scale-row.deg-5 .scale-degree-num { color: var(--magenta); }

/* ── Footer ── */

.app-footer {
  text-align: center;
  padding: 10px 16px 18px;
  font-size: 10px;
  letter-spacing: 0.15em;
  color: rgba(125, 138, 165, 0.6);
}

@media (min-width: 480px) {
  .key-fact-value { font-size: 16px; }
}