:root {
  --ink: #e8eefc;
  --dim: #8fa2c8;
  --accent: #6fd8ff;
  --hot: #ff6b81;
  --gold: #ffd166;
  --panel: rgba(8, 12, 26, 0.86);
  --chrome: 76px; /* footer + stage padding, reserved from the viewport height */
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  background:
    radial-gradient(1200px 700px at 50% -10%, #17224d 0%, #080b18 55%, #04050c 100%);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  overflow: hidden;
  -webkit-text-size-adjust: 100%;
}

.frame {
  position: fixed;
  inset: 0;
  display: grid;
  grid-template-rows: 1fr auto;
  padding-bottom: env(safe-area-inset-bottom);
}

.stagewrap {
  display: grid;
  place-items: center;
  min-height: 0;
  padding: 10px;
}

/*
 * The stage keeps a fixed 2:3 field. Width is the definite axis and the height
 * comes from aspect-ratio, so the ratio actually applies — a stretched item
 * (flex-grow, or align stretch) has two definite axes and ignores it.
 */
.stage {
  position: relative;
  width: min(100%, calc((100vh - var(--chrome)) * 2 / 3));
  width: min(100%, calc((100dvh - var(--chrome)) * 2 / 3));
  aspect-ratio: 2 / 3;
  container-type: size;
  border-radius: 14px;
  overflow: hidden;
  background: #05060f;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.07),
    0 30px 80px rgba(0, 0, 0, 0.6),
    0 0 70px rgba(64, 128, 255, 0.12);
}

canvas#game {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: crosshair;
}

/* [hidden] is only a UA rule, so state it explicitly next to the display rule. */
.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 4cqw;
  background: rgba(4, 6, 16, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.overlay[hidden] { display: none; }

/*
 * Overlay chrome is sized in container units so it tracks the letterboxed
 * stage rather than the viewport, which can be a very different shape.
 */
.panel {
  width: min(86cqw, 420px);
  padding: clamp(18px, 6cqh, 34px) clamp(16px, 6cqw, 30px);
  text-align: center;
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
  animation: rise 0.22s ease-out;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(10px) scale(0.98); }
  to { opacity: 1; transform: none; }
}

.panel h1 {
  margin: 0 0 6px;
  font-size: clamp(24px, 8.6cqw, 44px);
  letter-spacing: 0.04em;
  background: linear-gradient(180deg, #ffffff, var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.panel h2 {
  margin: 0 0 8px;
  font-size: clamp(20px, 6.6cqw, 32px);
  letter-spacing: 0.06em;
  color: var(--hot);
}

.panel h2.calm { color: var(--accent); }

/* Only worth saying where there is no keyboard. */
.touch { display: none; }
@media (pointer: coarse) {
  .touch {
    display: block;
    margin: 0 0 clamp(12px, 2.6cqh, 18px);
    color: var(--accent);
    font-size: clamp(11px, 3.2cqw, 14px);
  }
}

.tag {
  margin: 0 0 clamp(10px, 2.4cqh, 18px);
  color: var(--dim);
  font-size: clamp(12px, 3.4cqw, 15px);
}

.score {
  margin: 2px 0 10px;
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: clamp(30px, 11cqw, 52px);
  font-weight: 700;
  color: var(--gold);
}

.keys {
  display: grid;
  grid-template-columns: auto auto;
  gap: 4px 14px;
  justify-content: center;
  margin: 0 0 clamp(14px, 3cqh, 22px);
  font-size: clamp(11px, 3.2cqw, 14px);
}
.keys dt { color: var(--dim); text-align: right; }
.keys dd { margin: 0; text-align: left; font-weight: 600; }

.cta {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: clamp(10px, 2.6cqh, 15px) clamp(22px, 8cqw, 40px);
  font: inherit;
  font-weight: 700;
  font-size: clamp(14px, 4cqw, 18px);
  letter-spacing: 0.03em;
  color: #04121c;
  background: linear-gradient(180deg, #a8ecff, var(--accent));
  cursor: pointer;
  box-shadow: 0 10px 26px rgba(111, 216, 255, 0.28);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.cta:hover { transform: translateY(-1px); }
.cta:active { transform: translateY(1px); box-shadow: 0 4px 14px rgba(111, 216, 255, 0.24); }
.cta:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }

.best {
  margin: clamp(10px, 2.4cqh, 16px) 0 0;
  color: var(--dim);
  font-size: clamp(11px, 3.2cqw, 14px);
  letter-spacing: 0.04em;
}

.record {
  margin: clamp(10px, 2.4cqh, 16px) 0 0;
  color: var(--gold);
  font-weight: 700;
  font-size: clamp(12px, 3.6cqw, 15px);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.bar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 16px 10px;
  height: 44px;
  font-size: 12px;
  color: var(--dim);
}

.brand {
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
}

.hint {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ghost {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.04);
  color: var(--ink);
  border-radius: 999px;
  padding: 6px 14px;
  font: inherit;
  font-size: 12px;
  cursor: pointer;
  white-space: nowrap;
}
.ghost:hover { background: rgba(255, 255, 255, 0.1); }
.ghost:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

@media (max-width: 560px) {
  .hint { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .panel { animation: none; }
  .cta { transition: none; }
}