:root{
  --ink:#eef2f8;
  --muted:#99a2b5;
  --panel:rgba(16,19,28,.92);
  --panel-line:#2b3242;
  --accent:#ff8a1f;
  --accent-2:#2fd4c4;
  --danger:#ff5f6b;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;overflow:hidden;background:#05070d;color:var(--ink);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-user-select:none;user-select:none}
canvas#scene{position:fixed;inset:0;width:100%;height:100%;display:block}
.hidden{display:none !important}

/* ---------- menus ---------- */
#overlay{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;pointer-events:none}
.screen{display:none;flex-direction:column;align-items:center;gap:18px;width:min(520px,92vw);
  max-height:92vh;overflow-y:auto;pointer-events:auto;padding:8px}
.screen.active{display:flex}
#overlay::before{content:"";position:fixed;inset:0;background:
  radial-gradient(ellipse at 50% 0%, rgba(255,138,31,.16), transparent 55%),
  linear-gradient(rgba(5,7,13,.86), rgba(5,7,13,.94));opacity:0;transition:opacity .25s;pointer-events:none}
#overlay.show-bg::before{opacity:1}

.logo{text-align:center;margin-bottom:6px}
.logo h1{margin:0;font-size:clamp(2.6rem,9vw,4.2rem);letter-spacing:-.03em;font-weight:900;line-height:.92}
.logo h1 span{display:block;color:var(--accent);
  text-shadow:0 0 28px rgba(255,138,31,.45)}
.logo .sub{margin:10px 0 0;color:var(--muted);font-size:.9rem}

h2{margin:0;font-size:1.7rem;font-weight:800;letter-spacing:-.01em}
h3{margin:14px 0 8px;font-size:.78rem;text-transform:uppercase;letter-spacing:.14em;color:var(--muted)}

.menu{display:flex;flex-direction:column;gap:10px;width:100%}
.btn{width:100%;padding:13px 18px;border-radius:11px;border:1px solid var(--panel-line);
  background:#1a1f2b;color:var(--ink);font:inherit;font-weight:700;font-size:1rem;cursor:pointer;
  transition:transform .08s,border-color .15s,background .15s}
.btn:hover{border-color:#49536b;background:#222837}
.btn:active{transform:translateY(2px)}
.btn.big{padding:17px 18px;font-size:1.1rem}
.btn.primary{background:linear-gradient(180deg,#ff9a34,#f07209);border-color:#ffab54;color:#160d02;
  box-shadow:0 6px 0 #8a4204,0 10px 24px rgba(255,138,31,.3)}
.btn.primary:hover{background:linear-gradient(180deg,#ffad5c,#ff8a1f)}
.btn.primary:active{box-shadow:0 3px 0 #8a4204}
.btn.ghost{background:transparent;color:var(--muted)}
.btn.ghost:hover{color:var(--ink)}
.btn.small{width:auto;padding:7px 14px;font-size:.85rem}

.panel{width:100%;background:var(--panel);border:1px solid var(--panel-line);border-radius:16px;
  padding:20px;backdrop-filter:blur(8px)}
.note{color:var(--muted);font-size:.85rem;line-height:1.5;margin:0 0 14px}
.err{color:var(--danger);font-size:.85rem;min-height:1.2em;margin:10px 0 0}
.foot{color:var(--muted);font-size:.78rem;margin:4px 0 0;text-align:center}

.row{display:flex;gap:10px;align-items:center}
.row label{color:var(--muted);font-size:.9rem}
input,select{font:inherit;padding:12px 14px;border-radius:10px;border:1px solid var(--panel-line);
  background:#11151e;color:var(--ink);width:100%}
input:focus,select:focus{outline:2px solid var(--accent);outline-offset:-1px}
#joinCode{text-align:center;letter-spacing:.4em;font-weight:800;font-size:1.3rem;text-transform:uppercase}

.divider{display:flex;align-items:center;gap:12px;margin:18px 0;color:var(--muted);font-size:.78rem}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--panel-line)}

.field{display:flex;flex-direction:column;gap:7px;margin-bottom:16px}
.field > span{font-size:.85rem;color:var(--muted);font-weight:600}
.field small{font-weight:400;opacity:.75}

.swatches{display:flex;gap:9px;flex-wrap:wrap}
.swatch{width:38px;height:38px;border-radius:10px;border:3px solid transparent;cursor:pointer;padding:0}
.swatch.sel{border-color:#fff;transform:scale(1.08)}

.codebox{text-align:center;padding:14px;background:#11151e;border-radius:12px;border:1px dashed var(--panel-line)}
.code{font-size:2.4rem;font-weight:900;letter-spacing:.3em;color:var(--accent-2);margin:6px 0 10px}

.players{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.players li{display:flex;align-items:center;gap:11px;padding:10px 12px;background:#151a24;border-radius:10px;font-weight:600}
.players .dot{width:15px;height:15px;border-radius:50%;flex:none;box-shadow:0 0 0 2px rgba(255,255,255,.12)}
.players .tag{margin-left:auto;font-size:.7rem;color:var(--muted);text-transform:uppercase;letter-spacing:.1em}

.keys{width:100%;border-collapse:collapse;font-size:.92rem}
.keys td{padding:9px 4px;border-bottom:1px solid var(--panel-line)}
.keys td:last-child{color:var(--muted);text-align:right}
kbd{display:inline-block;padding:3px 8px;border-radius:6px;background:#242b3a;border:1px solid #39425a;
  border-bottom-width:3px;font-family:inherit;font-size:.82rem;font-weight:700}

.results{list-style:none;counter-reset:pos;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.results li{counter-increment:pos;display:flex;align-items:center;gap:12px;padding:12px 14px;
  background:#151a24;border-radius:10px;font-weight:700}
.results li::before{content:counter(pos);width:26px;height:26px;border-radius:50%;background:#2a3140;
  display:grid;place-items:center;font-size:.85rem;flex:none}
.results li:first-child::before{background:var(--accent);color:#160d02}
.results li .t{margin-left:auto;font-variant-numeric:tabular-nums;color:var(--accent-2)}
.results li .me{color:var(--accent)}

.spinner{width:42px;height:42px;border:4px solid #222a38;border-top-color:var(--accent);
  border-radius:50%;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
#loading{color:var(--muted)}

/* ---------- HUD ---------- */
#hud{position:fixed;inset:0;pointer-events:none;font-variant-numeric:tabular-nums}
.hud-left{position:absolute;top:18px;left:18px;display:flex;gap:10px}
.hud-box{background:rgba(10,13,20,.72);border:1px solid rgba(255,255,255,.08);border-radius:12px;
  padding:9px 15px;backdrop-filter:blur(6px)}
.hud-label{display:block;font-size:.62rem;text-transform:uppercase;letter-spacing:.14em;color:var(--muted)}
.hud-value b{font-size:1.5rem;font-weight:900}
.hud-value small{color:var(--muted);font-size:.9rem;font-weight:700}

.hud-times{position:absolute;top:18px;left:50%;transform:translateX(-50%);
  background:rgba(10,13,20,.72);border:1px solid rgba(255,255,255,.08);border-radius:12px;
  padding:9px 16px;backdrop-filter:blur(6px);min-width:180px}
.time-row{display:flex;justify-content:space-between;gap:16px;font-size:.84rem}
.time-row span{color:var(--muted)}
.time-row b{font-weight:800}
.time-row:first-child b{color:var(--accent-2)}

#minimap{position:absolute;top:18px;right:18px;background:rgba(10,13,20,.72);
  border:1px solid rgba(255,255,255,.08);border-radius:14px;backdrop-filter:blur(6px)}

#speedo{position:absolute;right:22px;bottom:22px;text-align:right}
#speedNum{font-size:4.2rem;font-weight:900;line-height:.85;text-shadow:0 3px 18px rgba(0,0,0,.6)}
#speedUnit{font-size:.72rem;letter-spacing:.2em;color:var(--muted);text-transform:uppercase;margin-top:2px}
#speedBarWrap{width:170px;height:7px;background:rgba(255,255,255,.14);border-radius:4px;margin-top:10px;overflow:hidden}
#speedBar{height:100%;width:0;border-radius:4px;background:linear-gradient(90deg,var(--accent-2),var(--accent),#ff4040);
  transition:width .08s linear}

#countdown{position:absolute;inset:0;display:grid;place-items:center;font-size:clamp(5rem,22vw,13rem);
  font-weight:900;color:#fff;text-shadow:0 0 50px rgba(255,138,31,.75)}
#countdown.go{color:var(--accent-2)}

#toast{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);
  background:rgba(10,13,20,.92);border:1px solid var(--panel-line);border-radius:14px;
  padding:16px 28px;font-size:1.15rem;font-weight:800;text-align:center;
  z-index:50;pointer-events:none;color:var(--ink)}

#tPause{position:absolute;top:92px;left:18px;width:52px;height:52px;border-radius:50%;
  pointer-events:auto;border:2px solid rgba(255,255,255,.25);background:rgba(20,25,35,.72);
  color:#fff;font-size:1rem;font-weight:800;letter-spacing:.1em;backdrop-filter:blur(4px)}

/* touch */
#touchControls{position:absolute;inset:auto 0 0 0;height:180px;pointer-events:none}
.tbtn{position:absolute;bottom:24px;width:88px;height:88px;border-radius:50%;pointer-events:auto;
  border:2px solid rgba(255,255,255,.25);background:rgba(20,25,35,.72);color:#fff;
  font-size:1.5rem;font-weight:800;backdrop-filter:blur(4px)}
#tLeft{left:22px}
#tRight{left:124px}
#tGas{right:22px;background:rgba(255,138,31,.82);color:#160d02;font-size:.95rem}
#tBrake{right:124px;background:rgba(255,95,107,.75);font-size:.8rem}

@media (max-width:620px){
  .hud-times{min-width:150px;padding:7px 12px;font-size:.8rem}
  #minimap{width:120px;height:120px}
  #speedNum{font-size:3rem}
  #speedBarWrap{width:120px}
  .panel{padding:16px}
}