:root {
  color-scheme: dark;
  --bg: #0b0f17;
  --panel: #121826;
  --line: #1f2937;
  --text: #e6edf6;
  --muted: #8a97ab;
  --accent: #4cc9f0;
  --accent-ink: #04202b;
  --mini: 22px;
  --gap: 14px;
  /* largeur du plateau = moitié de la hauteur utile (ratio 1:2) */
  --stage-w: calc((100vh - 2 * var(--gap)) / 2);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: radial-gradient(1200px 700px at 50% -10%, #17203a 0%, var(--bg) 60%);
  color: var(--text);
  overscroll-behavior: none;
  -webkit-tap-highlight-color: transparent;
  user-select: none; -webkit-user-select: none;
}
.sr-only { position: absolute; top: 0; left: 0; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
h1, h2, dl, dd, p { margin: 0; }

/* ---------- Layout bureau ---------- */
@supports (height: 100dvh) { :root { --stage-w: calc((100dvh - 2 * var(--gap)) / 2); } }
html, body { overflow: hidden; }
.app {
  height: 100vh; height: 100dvh;
  padding: max(var(--gap), env(safe-area-inset-top)) max(var(--gap), env(safe-area-inset-right)) max(var(--gap), env(safe-area-inset-bottom)) max(var(--gap), env(safe-area-inset-left));
  display: grid;
  grid-template-columns: minmax(0, 11rem) minmax(0, var(--stage-w)) minmax(0, 11rem);
  grid-template-rows: minmax(0, 1fr);
  grid-template-areas: "left stage right";
  justify-content: center;
  column-gap: calc(var(--gap) * 2);
}
.side { display: flex; flex-direction: column; gap: var(--gap); align-self: start; width: 100%; max-width: 11rem; }
.side.left { grid-area: left; justify-self: end; }
.side.right { grid-area: right; justify-self: start; }
.aside { display: grid; gap: 1rem; }
.stage { grid-area: stage; min-width: 0; min-height: 0; display: grid; place-items: center; }
.touch { display: none; grid-area: touch; }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 10px 12px 12px; }
.panel h2, .stat dt { font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.panel canvas { display: block; margin: 8px auto 0; }

.stats { display: grid; gap: 10px; }
.hold { grid-area: hold; align-self: start; }
.next { grid-area: next; align-self: start; }
.stats { grid-area: stats; }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 10px 14px; }
.stat dd { font: 700 1.5rem/1.2 ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-variant-numeric: tabular-nums; margin-top: 2px; }
.stat.score dd { font-size: 1.9rem; color: var(--accent); }
.stat.best dd { color: var(--muted); font-size: 1.1rem; }

.frame { position: relative; border-radius: 10px; overflow: hidden; background: #0e1422; box-shadow: 0 0 0 1px var(--line), 0 24px 60px rgba(0, 0, 0, .55); }
.frame canvas { display: block; }

.overlay { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .9rem; padding: 1.25rem; text-align: center; background: rgba(8, 11, 18, .86); backdrop-filter: blur(3px); }
.overlay[hidden] { display: none; }
.overlay h1 { font-size: clamp(1.8rem, 6vw, 2.6rem); letter-spacing: .08em; text-transform: uppercase; font-weight: 800; }
.overlay p { color: var(--muted); font-size: .95rem; max-width: 18rem; }
.ov-score { color: var(--text) !important; font: 700 1.3rem ui-monospace, Menlo, Consolas, monospace !important; }

.btn { font: 600 .95rem/1 inherit; font-family: inherit; color: var(--text); background: #1a2233; border: 1px solid #2a3550; border-radius: 12px; padding: .85rem 1.2rem; min-height: 44px; cursor: pointer; touch-action: manipulation; }
.btn:hover { background: #222c44; }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 700; min-width: 11rem; }
.btn.primary:hover { background: #7ad8f5; }
.btn.ghost { background: transparent; }
.btn:focus-visible { outline: 3px solid #fff; outline-offset: 2px; }

.keys { display: grid; gap: 6px; color: var(--muted); font-size: .8rem; }
kbd { display: inline-block; min-width: 1.6em; padding: .1em .4em; margin-right: .25em; text-align: center; font: 600 .75rem ui-monospace, Menlo, Consolas, monospace; color: var(--text); background: #1a2233; border: 1px solid #2a3550; border-bottom-width: 2px; border-radius: 6px; }

/* ---------- Layout mobile / tactile ---------- */
@media (max-width: 760px), (pointer: coarse) {
  :root { --mini: 15px; --gap: 10px; }
  .app {
    grid-template-columns: auto minmax(0, 1fr) auto;
    grid-template-rows: auto minmax(0, 1fr) auto;
    grid-template-areas:
      "hold  stats next"
      "stage stage stage"
      "touch touch touch";
    column-gap: var(--gap);
    row-gap: var(--gap);
  }
  .side { display: contents; }
  .hold, .next { padding: 6px 8px 8px; align-self: stretch; }
  .hold h2, .next h2 { text-align: center; }
  .stats { grid-template-columns: 1fr 1fr; gap: 6px; }
  .stat { padding: 6px 10px; }
  .stat dd { font-size: 1.05rem; }
  .stat.score { grid-column: 1 / -1; display: flex; justify-content: space-between; align-items: baseline; }
  .stat.score dd { font-size: 1.4rem; }
  .stat.best { display: none; }
  .aside { display: none; }
  .touch { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
  .btn.t { min-height: 54px; padding: .5rem; font-size: 1.25rem; border-radius: 14px; }
  .btn.t[data-act="hold"], .btn.t[data-act="pause"] { font-size: .85rem; }
  .btn.t.accent { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
}
/* Écran large avec souris : jamais de commandes tactiles */
@media (min-width: 761px) and (hover: hover) and (pointer: fine) {
  .touch { display: none; }
}
/* Fenêtre desktop peu haute : colonnes latérales compactes */
@media (min-width: 761px) and (max-height: 640px) {
  :root { --mini: 16px; --gap: 10px; }
  .keys, .stat.best { display: none; }
  .stats { gap: 6px; }
  .stat { padding: 6px 12px; }
  .stat dd, .stat.score dd { font-size: 1.1rem; }
  .aside { gap: .5rem; }
}
/* Paysage bas (téléphone couché) : panneaux latéraux compacts */
@media (max-height: 480px) and (min-width: 561px) and (pointer: coarse) {
  .app { grid-template-columns: auto minmax(0, 1fr) auto auto; grid-template-rows: minmax(0, 1fr); grid-template-areas: "hold stage next touch"; }
  .hold, .next { align-self: start; }
  .stats { display: none; }
  .touch { grid-template-columns: repeat(2, 1fr); align-self: center; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  .btn:active { transform: none; }
}