/* Eye Chase — minimal, punchy, readable */

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Helvetica, Arial, sans-serif;
  color: rgba(255,255,255,0.92);
  background:
    radial-gradient(1200px 700px at 70% 20%, rgba(255,255,255,0.10), transparent 55%),
    radial-gradient(900px 700px at 20% 80%, rgba(255,80,160,0.10), transparent 60%),
    linear-gradient(180deg, #0b0c10, #07070a);
  overflow: hidden;
}

#game {
  height: 100%;
  width: 100%;
  position: relative;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none; /* allow drag movement */
}

.hud {
  position: absolute;
  top: 16px;
  left: 16px;
  right: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  z-index: 5;
  pointer-events: none;
}

.hud__left, .hud__right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.hud__right { pointer-events: auto; }

.badge {
  pointer-events: none;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.35);
  font-variant-numeric: tabular-nums;
}

.badge__label {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.78;
}

.btn {
  pointer-events: auto;
  appearance: none;
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(255,255,255,0.10);
  color: rgba(255,255,255,0.92);
  padding: 10px 12px;
  border-radius: 12px;
  font-weight: 650;
  letter-spacing: -0.01em;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease;
}

.btn:hover { transform: translateY(-1px); background: rgba(255,255,255,0.14); border-color: rgba(255,255,255,0.26); }
.btn:active { transform: translateY(0px); }
.btn:focus { outline: 2px solid rgba(255,80,160,0.8); outline-offset: 2px; }

.btn--ghost {
  background: rgba(255,255,255,0.06);
}

.btn--primary {
  background: linear-gradient(135deg, rgba(255,80,160,0.95), rgba(120,110,255,0.95));
  border-color: rgba(255,255,255,0.20);
}

.overlay {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: grid;
  place-items: center;
  padding: 24px;
  background: radial-gradient(900px 600px at 50% 25%, rgba(255,255,255,0.10), rgba(0,0,0,0.65) 60%, rgba(0,0,0,0.82));
}

.overlay.hidden { display: none; }

.card {
  width: min(560px, 100%);
  border-radius: 22px;
  padding: 22px 20px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 30px 80px rgba(0,0,0,0.55);
}

.title {
  font-size: 28px;
  font-weight: 820;
  letter-spacing: -0.03em;
  margin-bottom: 6px;
}

.subtitle {
  margin: 0 0 14px 0;
  opacity: 0.82;
  line-height: 1.45;
}

.result {
  margin: 10px 0 14px;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(0,0,0,0.30);
  font-variant-numeric: tabular-nums;
}

.result.hidden { display: none; }

.rules {
  margin: 14px 0 18px;
  padding: 14px 14px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(0,0,0,0.22);
}

.rules__row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 10px;
  padding: 8px 4px;
}

.rules__row + .rules__row { border-top: 1px solid rgba(255,255,255,0.08); }

.rules__k {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.78;
}

.rules__v { opacity: 0.92; }

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.small {
  margin-top: 12px;
  opacity: 0.70;
  font-size: 12px;
  line-height: 1.5;
}

kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.95em;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.16);
  padding: 2px 6px;
  border-radius: 8px;
}

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