:root{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color-scheme:dark}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;width:100%;height:100%;overflow:hidden;background:#1a1209}.game-shell{position:relative;width:100vw;height:100vh;overflow:hidden}.game-canvas{position:absolute;top:0;right:0;bottom:0;left:0;cursor:crosshair;z-index:1}.hud{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;display:flex;flex-direction:column;align-items:center;font-family:Trebuchet MS,system-ui,sans-serif;color:#fff;text-shadow:0 2px 6px rgba(0,0,0,.8);-webkit-user-select:none;user-select:none;z-index:10}.scoreboard{margin-top:24px;display:flex;align-items:center;gap:32px;background:#00000080;padding:16px 36px;border-radius:14px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.14);box-shadow:0 8px 24px #00000059}.score{display:flex;flex-direction:column;align-items:center;min-width:96px;padding:4px 8px;border-radius:8px;transition:transform .18s ease,background .18s ease}.score.flash{animation:score-flash .6s ease-out}@keyframes score-flash{0%{transform:scale(1);background:transparent}30%{transform:scale(1.18);background:#ffffff2e}to{transform:scale(1);background:transparent}}.score-label{font-size:14px;letter-spacing:2px;text-transform:uppercase;opacity:.8}.score-value{font-size:56px;font-weight:800;line-height:1;margin-top:6px;font-variant-numeric:tabular-nums}.score-value.player{color:#ff6b6b}.score-value.ai{color:#6be36b}.score-divider{display:flex;flex-direction:column;align-items:center;height:56px;justify-content:center;position:relative;padding:0 4px}.score-divider:before{content:"";position:absolute;top:8px;bottom:8px;left:50%;width:1px;background:linear-gradient(to bottom,transparent,rgba(255,255,255,.22),transparent)}.score-target{font-size:11px;letter-spacing:2px;text-transform:uppercase;opacity:.6;white-space:nowrap}.mute-btn{position:absolute;top:24px;right:24px;pointer-events:auto;background:#00000073;color:#fff;border:1px solid rgba(255,255,255,.18);border-radius:8px;padding:8px 14px;font-size:13px;letter-spacing:1px;cursor:pointer;font-family:inherit;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.mute-btn:hover{background:#000000a6}.center-message{margin-top:auto;margin-bottom:18%;font-size:28px;font-weight:600;letter-spacing:1px;text-align:center;pointer-events:none}.center-message .hint{display:block;font-size:16px;font-weight:400;opacity:.85;margin-top:8px}.game-over-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#0000008c;pointer-events:auto}.game-over-overlay h1{font-size:64px;margin:0 0 16px}.game-over-overlay button{margin-top:24px;padding:12px 32px;font-size:18px;border:0;border-radius:8px;background:#ff6b6b;color:#fff;cursor:pointer;font-weight:600;letter-spacing:1px}.game-over-overlay button:hover{background:#ff5151}