*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow:hidden;font-family:"Segoe UI",system-ui,-apple-system,Arial,sans-serif;background:#0b1020;color:#fff}
#app{position:fixed;inset:0}
/* cinematic grade: soft vignette + fine film grain */
#app::before{content:'';position:absolute;inset:0;pointer-events:none;z-index:3;
  background:radial-gradient(ellipse at 50% 44%,rgba(0,0,0,0) 54%,rgba(16,10,4,.30) 100%)}
#app::after{content:'';position:absolute;inset:-40%;pointer-events:none;z-index:3;opacity:.05;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/></filter><rect width='160' height='160' filter='url(%23n)'/></svg>");
  animation:grain 1.1s steps(5) infinite}
@keyframes grain{0%{transform:translate(0,0)}20%{transform:translate(-3%,2%)}40%{transform:translate(2%,-3%)}60%{transform:translate(-2%,-2%)}80%{transform:translate(3%,1%)}100%{transform:translate(0,0)}}
@media (prefers-reduced-motion:reduce){#app::after{animation:none}}
#scene{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none}
.hidden{display:none!important}
#hud{position:absolute;top:0;left:0;right:0;pointer-events:none;padding:10px}
.hud-top{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.hud-item{background:rgba(10,10,20,.65);border:1px solid rgba(255,255,255,.25);border-radius:12px;padding:8px 14px;font-weight:700;font-size:15px;backdrop-filter:blur(4px)}
.hud-item.stamina{display:flex;align-items:center;gap:8px}
#stamina-bar{width:110px;height:12px;background:#333;border-radius:8px;overflow:hidden}
#stamina-fill{height:100%;width:100%;background:linear-gradient(90deg,#22c55e,#eab308,#ef4444);transition:width .15s}
#racers{display:flex;gap:8px;justify-content:center;margin-top:8px;flex-wrap:wrap}
.racer{background:rgba(10,10,20,.6);border-radius:10px;padding:6px 10px;font-size:13px;border:1px solid rgba(255,255,255,.2)}
.racer .bar{width:110px;height:8px;background:#333;border-radius:6px;overflow:hidden;margin-top:4px}
.racer .bar i{display:block;height:100%;background:#fbbf24}
.racer.me{border-color:#22c55e}
#hint{position:absolute;bottom:118px;left:50%;transform:translateX(-50%);text-align:center;font-size:13px;background:rgba(0,0,0,.55);padding:8px 14px;border-radius:10px;max-width:92vw;pointer-events:none}
#touch-controls{position:absolute;bottom:14px;left:0;right:0;display:flex;justify-content:space-between;align-items:flex-end;padding:0 16px}
#swing-pad{display:flex;gap:12px}
#btn-left,#btn-right{width:64px;height:64px;font-size:24px;border-radius:50%;border:2px solid #fff;background:rgba(255,255,255,.15);color:#fff}
#btn-bite{width:110px;height:110px;border-radius:50%;border:3px solid #fff;background:radial-gradient(circle,#ef4444,#b91c1c);color:#fff;font-weight:900;font-size:15px;box-shadow:0 6px 24px rgba(239,68,68,.5)}
#btn-bite:active{transform:scale(.93)}
#overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(5,8,20,.72);backdrop-filter:blur(6px);z-index:10;padding:16px}
.card{background:linear-gradient(180deg,#b91c1c,#7f1d1d 60%,#1e293b);border:3px solid #fff;border-radius:20px;padding:26px 28px;max-width:520px;width:100%;text-align:center;box-shadow:0 20px 60px rgba(0,0,0,.6);max-height:92vh;overflow:auto}
.flags{font-size:28px}
h1{font-size:30px;margin:6px 0;text-shadow:0 3px 0 rgba(0,0,0,.4)}
.sub{color:#fecaca;font-weight:700;margin-bottom:10px}
.desc{font-size:14px;line-height:1.5;margin-bottom:12px}
.rules{font-size:13px;background:rgba(255,255,255,.12);border-radius:10px;padding:10px;margin-bottom:14px}
kbd{background:#fff;color:#111;border-radius:6px;padding:1px 8px;font-weight:800}
#btn-start{font-size:20px;font-weight:900;padding:12px 34px;border-radius:14px;border:none;background:linear-gradient(180deg,#fff,#fecaca);color:#b91c1c;cursor:pointer}
#btn-start:hover{transform:scale(1.03)}
.ghost{margin-top:8px;background:transparent;border:1px solid #fff;color:#fff;border-radius:10px;padding:6px 12px;cursor:pointer}
#result{font-size:20px;font-weight:900;margin-top:12px;min-height:28px}
#results-table{margin-top:10px;text-align:left;font-size:14px;background:rgba(0,0,0,.35);border-radius:10px;padding:10px}
#results-table div{display:flex;justify-content:space-between;padding:4px 6px;border-bottom:1px dashed rgba(255,255,255,.25)}
@media(max-width:640px){h1{font-size:24px}#hint{bottom:150px;font-size:12px}}