:root{
  --primary:#dc2626;
  --secondary:#2563eb;
  --accent:#22c55e;
  --neon:#38bdf8;
  --bg:#070b14;
  --bg2:#0f172a;
  --panel:rgba(15,23,42,.72);
  --border:rgba(255,255,255,.09);
  --text:#f8fafc;
  --muted:#94a3b8;
  --radius:18px;
  --shadow:0 18px 45px rgba(0,0,0,.55);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  background:
    radial-gradient(1100px 700px at 78% -8%, rgba(220,38,38,.20), transparent 60%),
    radial-gradient(900px 620px at 12% 108%, rgba(37,99,235,.22), transparent 60%),
    linear-gradient(160deg,#070b14 0%,#0b1120 55%,#070b14 100%);
  color:var(--text);
  font-family:'Cairo',system-ui,'Segoe UI',sans-serif;
  overflow:hidden;
  -webkit-tap-highlight-color:transparent;
  touch-action:manipulation;
  user-select:none;
}
#app{
  height:100dvh;width:100%;
  display:grid;place-items:center;
  padding:10px;
}
#stage{
  position:relative;
  touch-action:none;
  height:min(100dvh - 20px, (100vw - 20px) * 960 / 540);
  width:auto;
  aspect-ratio:540/960;
  border-radius:22px;
  overflow:hidden;
  background:#05070d;
  border:1px solid rgba(255,255,255,.10);
  box-shadow:0 0 0 1px rgba(220,38,38,.16), 0 26px 70px rgba(0,0,0,.65), 0 0 90px rgba(37,99,235,.14);
}
#game{display:block;width:100%;height:100%}
.crt{
  position:absolute;inset:0;pointer-events:none;opacity:.16;
  background:repeating-linear-gradient(0deg, rgba(255,255,255,.08) 0 1px, transparent 1px 3px);
  mix-blend-mode:overlay;
}
.hitflash{
  position:absolute;inset:0;pointer-events:none;opacity:0;
  background:radial-gradient(circle at 50% 60%, rgba(255,60,60,.55), rgba(120,0,0,.15) 60%, transparent 78%);
  transition:opacity .18s ease-out;
}
.hitflash.on{opacity:1}
.hidden{display:none !important}

/* ---------- HUD ---------- */
.hud{position:absolute;inset:0;pointer-events:none;font-size:13px}
.hud-top{
  position:absolute;top:14px;inset-inline:14px;
  display:flex;gap:8px;align-items:center;
}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 12px;border-radius:999px;
  background:var(--panel);backdrop-filter:blur(10px);
  border:1px solid var(--border);
  font-weight:700;letter-spacing:.2px;
  box-shadow:0 6px 18px rgba(0,0,0,.35);
}
.chip svg{color:var(--neon);flex:none}
.chip.score{margin-inline-start:auto;color:#eafff2}
.chip.score svg{color:var(--accent)}
.chip b,.chip span{font-variant-numeric:tabular-nums}

.lives{
  position:absolute;top:60px;inset-inline-end:16px;
  display:flex;gap:6px;align-items:center;
}
.lives svg{width:22px;height:22px;color:var(--primary);filter:drop-shadow(0 0 6px rgba(220,38,38,.55));transition:opacity .25s,transform .25s}
.lives svg.lost{opacity:.2;filter:none;transform:scale(.86)}

.hud-actions{
  position:absolute;top:60px;inset-inline-start:16px;
  display:flex;gap:8px;pointer-events:auto;
}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;
  border-radius:12px;cursor:pointer;
  background:var(--panel);backdrop-filter:blur(10px);
  border:1px solid var(--border);color:var(--text);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.icon-btn:hover{transform:translateY(-2px);border-color:rgba(56,189,248,.5);box-shadow:0 10px 24px rgba(56,189,248,.18)}
.icon-btn:active{transform:scale(.95)}
.icon-btn.off{color:var(--muted)}

.speedo{
  position:absolute;bottom:18px;inset-inline-end:16px;
  text-align:end;
  padding:12px 14px 10px;border-radius:16px;
  background:var(--panel);backdrop-filter:blur(10px);
  border:1px solid var(--border);min-width:150px;
}
.speedo-num{
  font-family:'Press Start 2P',monospace;font-size:26px;line-height:1.1;
  color:#fff;text-shadow:0 0 14px rgba(56,189,248,.75),0 0 34px rgba(37,99,235,.45);
  font-variant-numeric:tabular-nums;
}
.speedo.red .speedo-num{text-shadow:0 0 16px rgba(220,38,38,.85),0 0 38px rgba(220,38,38,.5)}
.speedo-unit{font-size:11px;color:var(--muted);font-weight:700;margin-top:2px}
.speedo-bar,.nitro-bar{
  height:7px;border-radius:999px;margin-top:8px;overflow:hidden;
  background:rgba(255,255,255,.10);
}
.speedo-bar span{
  display:block;height:100%;width:0%;border-radius:999px;
  background:linear-gradient(90deg,var(--neon),#818cf8 55%,var(--primary));
  transition:width .12s linear;
}
.nitro{
  position:absolute;bottom:18px;inset-inline-start:16px;
  width:150px;padding:12px 14px 10px;border-radius:16px;
  background:var(--panel);backdrop-filter:blur(10px);
  border:1px solid var(--border);
}
.nitro-head{display:flex;justify-content:space-between;align-items:center;font-size:11px;font-weight:700;color:var(--muted)}
.nitro-head b{color:var(--accent);font-variant-numeric:tabular-nums}
.nitro-bar span{
  display:block;height:100%;width:100%;border-radius:999px;
  background:linear-gradient(90deg,var(--accent),#06b6d4);
  transition:width .12s linear;
}
.touch-controls{
  position:absolute;bottom:104px;inset-inline-start:16px;
  display:flex;gap:10px;pointer-events:auto;
}
.ctl{
  width:56px;height:56px;border-radius:18px;display:grid;place-items:center;
  background:rgba(15,23,42,.66);backdrop-filter:blur(10px);
  border:1px solid var(--border);color:var(--text);cursor:pointer;
  transition:transform .15s ease,border-color .15s ease,background .15s ease;
}
.ctl:active{transform:scale(.93);border-color:var(--neon)}
.ctl.nitro-ctl{color:#fdba74;border-color:rgba(249,115,22,.35)}
@media (hover:hover) and (pointer:fine){ .touch-controls{display:none} }

/* ---------- Overlays ---------- */
.overlay{
  position:absolute;inset:0;z-index:5;
  display:grid;place-items:center;padding:22px;
  background:radial-gradient(circle at 50% 35%, rgba(37,99,235,.20), rgba(3,7,18,.86) 70%);
  backdrop-filter:blur(7px);
  animation:fadeIn .28s ease both;
}
.panel{
  width:100%;max-width:400px;padding:26px 22px;border-radius:22px;text-align:center;
  background:linear-gradient(165deg, rgba(20,30,52,.92), rgba(9,14,26,.92));
  border:1px solid var(--border);
  box-shadow:var(--shadow), inset 0 1px 0 rgba(255,255,255,.06);
  animation:fadeUp .45s cubic-bezier(.2,.7,.3,1) both;
}
.panel.small{max-width:340px}
.badge{
  display:inline-block;padding:5px 12px;border-radius:999px;font-size:11px;font-weight:700;
  background:rgba(56,189,248,.12);color:var(--neon);border:1px solid rgba(56,189,248,.28);
}
.badge.danger{background:rgba(220,38,38,.14);color:#fca5a5;border-color:rgba(220,38,38,.35)}
.title{
  font-size:clamp(30px,9vw,44px);font-weight:900;line-height:1.25;margin:12px 0 2px;
  background:linear-gradient(100deg,#fff 10%,#fca5a5 45%,var(--primary) 95%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 4px 22px rgba(220,38,38,.35));
}
.title em{font-style:normal;background:linear-gradient(100deg,var(--neon),#818cf8);-webkit-background-clip:text;background-clip:text;color:transparent}
.latin{
  font-family:'Press Start 2P',monospace;font-size:10px;letter-spacing:3px;color:var(--muted);margin-bottom:14px;
}
h2{font-size:22px;margin:10px 0 6px;font-weight:900}
.lead{font-size:13.5px;line-height:1.85;color:#cbd5e1;margin-bottom:16px}
.best{font-size:13px;color:var(--muted);margin:14px 0 6px}
.best b{color:#fff;font-size:16px;font-variant-numeric:tabular-nums}

.seg{display:flex;justify-content:center;gap:6px;margin:6px 0 4px}
.seg button{
  flex:1;padding:9px 6px;border-radius:12px;cursor:pointer;font-family:inherit;
  font-size:12.5px;font-weight:700;color:var(--muted);
  background:rgba(255,255,255,.04);border:1px solid var(--border);
  transition:all .2s ease;
}
.seg button:hover{color:#fff;border-color:rgba(255,255,255,.22)}
.seg button.active{
  color:#fff;background:linear-gradient(120deg,rgba(37,99,235,.5),rgba(220,38,38,.45));
  border-color:rgba(255,255,255,.3);box-shadow:0 8px 22px rgba(37,99,235,.28);
}

.btn{
  width:100%;display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 18px;border-radius:14px;border:none;cursor:pointer;
  font-family:inherit;font-size:15px;font-weight:700;color:#fff;
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease;
}
.btn.primary{background:linear-gradient(120deg,var(--primary),#b91c1c 55%,#1d4ed8);box-shadow:0 12px 30px rgba(220,38,38,.32)}
.btn.primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px rgba(220,38,38,.42);filter:brightness(1.06)}
.btn.ghost{background:rgba(255,255,255,.05);border:1px solid var(--border);color:#e2e8f0}
.btn.ghost:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.26)}
.btn:active{transform:scale(.975)}
.row{display:flex;gap:10px;margin-top:16px}

.results{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin:16px 0 4px}
.results div{
  padding:11px 12px;border-radius:14px;text-align:start;
  background:rgba(255,255,255,.045);border:1px solid var(--border);
}
.results span{display:block;font-size:11px;color:var(--muted);font-weight:700}
.results b{font-size:17px;font-variant-numeric:tabular-nums}
.newbest{
  margin:12px 0 0;padding:9px;border-radius:12px;font-weight:700;font-size:13px;
  background:rgba(34,197,94,.13);color:#86efac;border:1px solid rgba(34,197,94,.3);
  animation:pulse 1.6s ease-in-out infinite;
}
.keys{list-style:none;margin-top:16px;display:grid;gap:7px;font-size:12px;color:var(--muted);line-height:1.7}
kbd{
  display:inline-block;min-width:22px;padding:2px 7px;margin:0 1px;border-radius:6px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
  font-family:'Press Start 2P',monospace;font-size:9px;color:#e2e8f0;
}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.6}}
@media (max-height:700px){
  .panel{padding:20px 18px}
  .lead{font-size:12.5px;line-height:1.7;margin-bottom:12px}
  .keys{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}