* { box-sizing: border-box; }

body {
  margin: 0;
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: #1a1a1a;
  background: #faf6ee;
  padding: 24px;
}

header {
  max-width: 880px;
  margin: 0 auto 24px;
  text-align: center;
}

h1 {
  margin: 0 0 8px;
  font-size: 2rem;
  letter-spacing: -0.02em;
}

.subtitle {
  margin: 0 auto;
  max-width: 640px;
  color: #555;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 32px;
  align-items: start;
}

@media (max-width: 760px) {
  main { grid-template-columns: 1fr; }
}

/* Phone breakpoint — keep the layout breathable down to 320px. */
@media (max-width: 480px) {
  body { padding: 12px; }
  h1 { font-size: 1.5rem; }
  header { margin-bottom: 16px; }
  main { gap: 20px; }
}

.stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

#wheel {
  width: 100%;
  max-width: 560px;
  aspect-ratio: 1;
  cursor: grab;
  user-select: none;
  touch-action: none;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

#wheel.dragging { cursor: grabbing; }

#inner-disc {
  transition: transform 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
}

#inner-disc.dragging { transition: none; }

.note-item {
  transition: transform 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
}

#inner-disc.dragging .note-item { transition: none; }

.role-segment {
  cursor: default;
  stroke: #1a1a1a;
  stroke-width: 1;
}

.role-glyph {
  font-size: 26px;
  font-weight: 700;
  text-anchor: middle;
  dominant-baseline: central;
  pointer-events: none;
}

.note-label {
  font-size: 17px;
  font-weight: 600;
  text-anchor: middle;
  dominant-baseline: central;
  cursor: pointer;
  fill: #111;
}

.note-label:hover { fill: #c0392b; }

.note-disc {
  fill: #faf6ee;
  stroke: #1a1a1a;
  stroke-width: 1;
  cursor: pointer;
}

.note-disc:hover { fill: #ffeec7; }

.tonic-readout {
  margin: 0;
  font-size: 1.15rem;
}

.tonic-readout strong {
  font-size: 1.4rem;
  color: #c0392b;
}

.tonic-mode { color: #555; font-weight: 400; }

.step-controls {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
}

.step-controls button {
  appearance: none;
  border: 1px solid #1a1a1a;
  background: #fff;
  border-radius: 6px;
  padding: 6px 14px;
  font: inherit;
  cursor: pointer;
  min-width: 44px;
}

.step-controls button:hover { background: #1a1a1a; color: #fff; }

#step-back, #step-fwd {
  font-size: 1.1rem;
  line-height: 1;
}

aside.readout h2 {
  margin: 0 0 12px;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #555;
}

#bindings {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

#bindings th, #bindings td {
  padding: 6px 10px;
  text-align: left;
  border-bottom: 1px solid #eee;
}

#bindings th {
  background: #f0ece2;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #555;
}

#bindings .glyph-cell {
  font-size: 18px;
  text-align: center;
  width: 36px;
}

#bindings .swatch {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 2px;
  margin-right: 6px;
  vertical-align: middle;
  border: 1px solid rgba(0, 0, 0, 0.2);
}

.instruments {
  max-width: 1100px;
  margin: 32px auto 0;
}

.palette-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #555;
  margin-bottom: 12px;
}

.palette-toggle button {
  appearance: none;
  border: 1px solid #1a1a1a;
  background: #fff;
  border-radius: 6px;
  padding: 4px 10px;
  font: inherit;
  cursor: pointer;
}

.palette-toggle button.active {
  background: #1a1a1a;
  color: #fff;
}

.step-controls-footer {
  margin-top: 20px;
}

.step-controls.step-controls-footer button {
  padding: 10px 20px;
  font-size: 1rem;
}

.instruments h2 {
  margin: 24px 0 4px;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #555;
}

.instruments .caption {
  margin: 0 0 12px;
  color: #555;
  font-size: 14px;
}

#piano, #fretboard {
  width: 100%;
  height: auto;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

footer {
  max-width: 880px;
  margin: 32px auto 0;
  text-align: center;
  color: #888;
  font-size: 13px;
}

kbd {
  display: inline-block;
  padding: 1px 6px;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 11px;
  line-height: 1.2;
  border: 1px solid #b8b1a3;
  border-radius: 4px;
  background: #fff;
  box-shadow: inset 0 -1px 0 #d9d2c3;
  color: #1a1a1a;
}

#octave-readout {
  margin-left: 6px;
  padding: 1px 6px;
  border-radius: 4px;
  background: #f0e9d8;
}

/* --- Geometry overlay layer --- */

.geom-heptagon, .geom-pentagram {
  fill: rgba(255, 250, 234, 0.18);
  stroke: #1a1a1a;
  stroke-width: 2;
  stroke-linejoin: round;
  pointer-events: none;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.35));
}

.geom-heptagon {
  stroke: #2BA39A;        /* teal — the A Eólico hue */
  stroke-width: 2.5;
}

.geom-pentagram {
  stroke: #B687C6;        /* violet — the F# Penta-III hue (casa de Gátople) */
  stroke-width: 2;
  fill: rgba(182, 135, 198, 0.12);
}

.zona-arc {
  fill: none;
  stroke-width: 8;
  stroke-linecap: round;
  opacity: 0.35;
  pointer-events: none;
}

.geometry-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid #e6dfd0;
}

.geometry-controls button {
  appearance: none;
  border: 1px solid #1a1a1a;
  border-radius: 6px;
  padding: 6px 12px;
  font: 13px/1 inherit;
  background: #fff;
  cursor: pointer;
}

.geometry-controls button.active,
.geometry-controls button[aria-pressed="true"] {
  background: #1a1a1a;
  color: #fff;
}

/* Penta-BW sliding animation: when the tonic changes, the role bound to
   each fixed sticker changes, and the carta_color/fill swaps. A short
   transition makes the ★ pattern visibly slide across the neck. */
.piano-tint, .fret-tint {
  transition: fill 200ms ease-out;
}

/* --- Carta card (hover the wheel segments to reveal the painted carta) --- */

.carta-card {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 220px;
  background: #fffaf1;
  border: 1px solid rgba(23, 22, 21, 0.16);
  border-radius: 10px;
  box-shadow: 0 18px 44px rgba(42, 32, 20, 0.18);
  padding: 10px;
  z-index: 30;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 180ms ease-out, transform 180ms ease-out;
  pointer-events: none;
}

.carta-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.carta-card img {
  display: block;
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 6px;
  background: #f0ece2;
  margin-bottom: 8px;
}

.carta-card-meta h3 {
  margin: 0 0 2px;
  font-size: 0.95rem;
  font-weight: 700;
  color: #1a1a1a;
}

.carta-card-meta p {
  margin: 0;
  font-size: 0.8rem;
  color: #555;
}

@media (max-width: 760px) {
  .carta-card {
    position: static;
    width: 100%;
    margin: 16px 0;
    transform: none;
    opacity: 1;
  }
}

.page-tabs {
  margin: 4px 0 12px;
  font-size: 14px;
  color: #555;
}
.page-tabs a {
  color: #c0392b;
  text-decoration: none;
  border-bottom: 1px solid #c0392b;
  margin-left: 6px;
}
.page-tabs a:hover { color: #1a1a1a; border-color: #1a1a1a; }