:root {
  --bg: #0b1220;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --block: #38bdf8;
  --block-2: #0ea5e9;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 50% 0%, rgba(56, 189, 248, 0.2), transparent 45%),
    linear-gradient(180deg, #0b1220, #111827 70%, #1a2338);
}

body[data-theme="ciment"] {
  --accent: #94a3b8;
  --block: #94a3b8;
  --block-2: #64748b;
}

body[data-theme="neona"] {
  --accent: #22d3ee;
  --block: #22d3ee;
  --block-2: #a855f7;
  background:
    radial-gradient(circle at 70% 10%, rgba(34, 211, 238, 0.35), transparent 40%),
    radial-gradient(circle at 20% 80%, rgba(168, 85, 247, 0.25), transparent 40%),
    linear-gradient(180deg, #020617, #0f172a);
}

body[data-theme="or"] {
  --accent: #fbbf24;
  --block: #fbbf24;
  --block-2: #f59e0b;
  background:
    radial-gradient(circle at 30% 0%, rgba(251, 191, 36, 0.35), transparent 45%),
    linear-gradient(180deg, #1c1405, #0f172a);
}

body[data-theme="cristal"] {
  --accent: #67e8f9;
  --block: #a5f3fc;
  --block-2: #e0f2fe;
  background:
    radial-gradient(circle at 50% 0%, rgba(165, 243, 252, 0.35), transparent 45%),
    radial-gradient(circle at 80% 60%, rgba(224, 242, 254, 0.2), transparent 40%),
    linear-gradient(180deg, #0c4a6e, #0f172a);
}

.header {
  text-align: center;
  padding: 1.25rem 1rem 0.35rem;
}

.header h1 {
  margin: 0.3rem 0;
}

.header p {
  margin: 0;
  color: var(--muted);
}

.back {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
}

.back:hover {
  color: var(--text);
}

.hud {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin: 0.6rem 0;
  font-size: 0.95rem;
  color: var(--muted);
}

.hud strong {
  color: var(--text);
}

.stage {
  position: relative;
  width: min(92vw, 360px);
  margin: 0 auto;
}

#game {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.25);
  background: #0f172a;
  touch-action: none;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 0.6rem;
  text-align: center;
  padding: 1.2rem;
  background: rgba(15, 23, 42, 0.82);
  border-radius: 14px;
}

.overlay.hidden {
  display: none;
}

#overlay-title {
  margin: 0;
  font-size: 1.35rem;
}

.hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.4;
}

#start {
  border: 0;
  border-radius: 8px;
  padding: 0.7rem 1.3rem;
  background: var(--accent);
  color: #0f172a;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

#start:hover {
  filter: brightness(1.06);
}

.controls {
  text-align: center;
  color: var(--muted);
  font-size: 0.88rem;
  margin: 0.85rem 1rem 0;
}