:root { color-scheme: dark; --cyan: #63e1dc; --pink: #ed5be8; --text: #edf5ff; --muted: #98a7b8; }
* { box-sizing: border-box; }
body { min-height: 100vh; margin: 0; padding: 25px 16px; display: grid; place-items: center; color: var(--text); background: radial-gradient(ellipse at 50% 0, rgba(99,225,220,.11), transparent 55%), #090a0d; font-family: "Courier New", monospace; }
button { font: inherit; }
.game-page { width: min(100%, 760px); }
.intro { margin-bottom: 18px; text-align: center; }
.eyebrow { margin: 0 0 8px; color: var(--cyan); font-size: 11px; letter-spacing: 3px; }
h1 { margin: 0; color: #fff; font: 700 clamp(36px, 8vw, 52px)/1 Arial, sans-serif; letter-spacing: 4px; text-shadow: 3px 0 var(--pink), 0 0 22px rgba(99,225,220,.25); }
.description { margin: 10px 0 0; color: var(--muted); font-size: 12px; line-height: 1.6; }
.game-card { padding: 0; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
.hud { display: flex; align-items: end; justify-content: center; gap: 38px; max-width: 500px; margin: 0 auto 10px; }
.hud div { display: grid; gap: 4px; text-align: center; }
.hud-label { color: var(--muted); font-size: 10px; letter-spacing: 2px; }
.hud strong { color: var(--cyan); font-size: 22px; }
.versus { padding-bottom: 3px; color: var(--pink); }
.board-wrap { position: relative; width: 100%; overflow: hidden; background: #080d12; }
canvas { display: block; width: 100%; height: auto; aspect-ratio: 5 / 3; touch-action: none; }
.overlay { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 9px; padding: 20px; background: rgba(5,8,12,.78); text-align: center; }
.overlay[hidden] { display: none; }
.overlay strong { color: #fff; font: 700 clamp(18px, 4vw, 24px) Arial, sans-serif; }
.overlay span { color: var(--muted); font-size: 12px; line-height: 1.6; }
.actions { display: flex; justify-content: center; gap: 10px; margin: 14px 0 5px; }
.actions button, .mobile-controls button { min-height: 42px; border: 1px solid rgba(99,225,220,.35); border-radius: 6px; color: var(--text); background: #111722; cursor: pointer; }
.actions button { min-width: 106px; padding: 8px 14px; }
.actions button:hover:not(:disabled), .mobile-controls button:hover { border-color: var(--cyan); box-shadow: 0 0 14px rgba(99,225,220,.15); }
.actions button.primary { color: #081012; border-color: var(--cyan); background: var(--cyan); font-weight: 700; }
.actions button:disabled { cursor: not-allowed; opacity: .45; }
.mobile-controls { display: none; justify-content: center; gap: 10px; margin-top: 12px; }
.mobile-controls button { min-width: 108px; padding: 8px; touch-action: none; user-select: none; }
.help { margin: 12px 0 0; color: var(--muted); font-size: 10px; line-height: 1.7; text-align: center; }
footer { margin-top: 15px; color: #687585; font-size: 10px; text-align: center; }
@media (max-width: 600px) { body { padding: 18px 12px; } .mobile-controls { display: flex; } }