:root{
  --pink:#ff2d55; --cyan:#16e0ff; --violet:#b16cff; --gold:#ffd24a;
  --text:#f2f3ff; --muted:#9aa0c4; --safe-bottom:env(safe-area-inset-bottom,0px);
  --safe-top:env(safe-area-inset-top,0px);
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%;overflow:hidden;background:#040209;color:var(--text);
  font-family:'Segoe UI',system-ui,-apple-system,sans-serif;overscroll-behavior:none;}
button{font-family:inherit;color:inherit;cursor:pointer}

.game-shell{width:100%;height:100%;display:flex;flex-direction:column;
  background:radial-gradient(circle at 50% 12%,#1a0b3a 0%,#0a0518 45%,#020108 100%);}

.game-bar{height:52px;flex-shrink:0;display:flex;align-items:center;gap:.6rem;
  padding:max(6px,var(--safe-top)) 12px 6px;background:rgba(8,6,22,.72);
  border-bottom:1px solid rgba(255,255,255,.08);backdrop-filter:blur(12px);z-index:30;}
.back-link{display:inline-flex;align-items:center;gap:.3rem;text-decoration:none;color:var(--muted);
  font-weight:800;font-size:.82rem;letter-spacing:.02em}
.back-link:hover{color:var(--text)}
.game-bar-title{flex:1;font-weight:900;letter-spacing:.1em;text-transform:uppercase;font-size:.86rem;
  background:linear-gradient(90deg,var(--pink),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent;}
.player-pill{font-size:.72rem;font-weight:700;color:var(--muted);background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.1);padding:.25rem .6rem;border-radius:999px;max-width:110px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.icon-btn{width:36px;height:36px;border:1px solid rgba(255,255,255,.12);border-radius:10px;
  background:rgba(255,255,255,.05);font-size:1rem;display:grid;place-items:center}
.icon-btn:active{transform:scale(.94)}

.game-wrap{flex:1;position:relative;overflow:hidden;display:grid;place-items:start center;background:#000;touch-action:none}
#game-canvas{display:block;touch-action:none}

/* HUD */
.hud{position:absolute;inset:0;z-index:12;pointer-events:none;display:flex;flex-direction:column;
  padding:10px 12px;gap:8px}
.hud.hidden{display:none}
.hud-top{display:flex;align-items:center;gap:8px}
.hud-chip{display:flex;flex-direction:column;align-items:flex-start;line-height:1;background:rgba(6,7,20,.55);
  border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:.35rem .6rem;backdrop-filter:blur(10px)}
.hud-chip span{font-size:.58rem;letter-spacing:.14em;color:var(--muted);font-weight:800}
.hud-chip b{font-size:1rem;font-weight:900}
.hud-btn{pointer-events:all;margin-left:auto;width:38px;height:38px;border-radius:11px;
  border:1px solid rgba(255,255,255,.14);background:rgba(6,7,20,.6);font-weight:900;font-size:1rem}
.hud-bars{display:flex;gap:8px;max-width:340px}
.bar{position:relative;flex:1;height:16px;border-radius:8px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.1);overflow:hidden}
.bar span{position:absolute;inset:0;display:grid;place-items:center;font-size:.56rem;font-weight:900;
  letter-spacing:.1em;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.6);z-index:2}
.fill{position:absolute;left:0;top:0;bottom:0;width:100%;transition:width .15s linear}
.fill.health{background:linear-gradient(90deg,#ff4d6d,#ff9a3d)}
.fill.fuel{background:linear-gradient(90deg,#ffd24a,#9cff5a)}
.fill.boost{background:linear-gradient(90deg,#16e0ff,#7c5cff)}
.hud-zone{align-self:flex-start;font-size:.7rem;font-weight:900;letter-spacing:.16em;text-transform:uppercase;
  color:var(--cyan);text-shadow:0 0 14px rgba(22,224,255,.6)}
.hud-combo{align-self:center;margin-top:auto;font-size:1.4rem;font-weight:1000;color:var(--gold);
  text-shadow:0 0 18px rgba(255,210,74,.7);opacity:0;transition:opacity .15s;letter-spacing:.02em}
.hud-combo.show{opacity:1}

/* Screens */
.screen{position:absolute;inset:0;z-index:20;display:none;align-items:center;justify-content:center;padding:18px;
  background:radial-gradient(circle at 50% 25%,rgba(177,108,255,.18),rgba(3,3,10,.66) 52%,rgba(0,0,0,.78));
  backdrop-filter:blur(5px)}
.screen-active{display:flex}
.panel{width:min(460px,calc(100vw - 26px));max-height:calc(100% - 26px);overflow:auto;padding:clamp(20px,4vw,32px);
  border-radius:26px;background:linear-gradient(180deg,rgba(16,12,36,.9),rgba(8,6,20,.82));
  border:1px solid rgba(255,255,255,.14);box-shadow:0 24px 90px rgba(0,0,0,.6),0 0 50px rgba(177,108,255,.16);text-align:center}
.panel-sm{width:min(380px,calc(100vw - 26px))}
.eyebrow{color:var(--cyan);font-weight:900;font-size:.72rem;letter-spacing:.26em;text-transform:uppercase;margin-bottom:10px}
.panel h1{font-size:clamp(2.6rem,11vw,4.6rem);line-height:.86;letter-spacing:-.06em;
  background:linear-gradient(135deg,var(--pink),var(--violet),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.panel h1 span{display:block}
.panel h2{font-size:clamp(1.7rem,7vw,2.6rem);letter-spacing:-.04em;margin-bottom:8px}
.panel h3{margin:16px 0 8px;color:var(--muted);font-size:.82rem;text-transform:uppercase;letter-spacing:.16em}
.subtitle,.panel p{color:var(--muted);line-height:1.5}
.logo-orb{width:64px;height:64px;margin:0 auto 16px;border-radius:18px;
  background:linear-gradient(135deg,var(--pink),var(--violet));box-shadow:0 0 40px rgba(255,45,85,.6);
  animation:pulse 1.6s ease-in-out infinite}
@keyframes pulse{50%{transform:scale(1.08);filter:brightness(1.25)}}
.stat-strip{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin:16px 0}
.stat-strip span{padding:.5rem .75rem;border-radius:999px;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.1);color:var(--muted);font-size:.82rem}
.stat-strip b{color:var(--gold)}
.garage{display:flex;justify-content:center;gap:14px;margin:6px 0 4px}
.car-swatch{width:42px;height:42px;border-radius:50%;border:2px solid rgba(255,255,255,.2);
  background:radial-gradient(circle at 35% 30%,#fff5,transparent 45%),var(--c);box-shadow:0 0 18px var(--c)}
.car-swatch.is-active{outline:3px solid #fff;outline-offset:2px;transform:scale(1.08)}
.car-swatch.locked{filter:grayscale(.85) brightness(.6);position:relative}
.menu-actions{display:grid;gap:11px;margin-top:18px}
.menu-actions.compact{grid-template-columns:repeat(auto-fit,minmax(120px,1fr))}
.menu-actions button{min-height:48px;border:1px solid rgba(255,255,255,.14);border-radius:14px;
  background:rgba(255,255,255,.07);font-weight:900;letter-spacing:.02em}
.menu-actions button:hover{background:rgba(255,255,255,.12);transform:translateY(-1px)}
.menu-actions .primary{border:none;background:linear-gradient(135deg,var(--pink),var(--violet));
  box-shadow:0 14px 36px rgba(255,45,85,.3)}
.readable{text-align:left}.readable h2,.readable .eyebrow{text-align:center}
.how-grid{display:grid;gap:10px;margin-top:16px}
.how-grid div{padding:12px 14px;border-radius:14px;border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.05)}
.how-grid b{display:block;color:var(--text);margin-bottom:4px}
.how-grid span{color:var(--muted);line-height:1.45;font-size:.9rem}
.final-score{font-size:clamp(2.6rem,13vw,4.6rem);font-weight:1000;letter-spacing:-.05em;margin:4px 0 12px;
  background:linear-gradient(135deg,var(--gold),var(--pink),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent}
.summary-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
.summary-grid div{padding:10px 12px;border:1px solid rgba(255,255,255,.1);border-radius:14px;background:rgba(255,255,255,.055)}
.summary-grid b{color:var(--text);display:block;font-size:1.05rem}
.summary-grid span{color:var(--muted);font-size:.72rem;text-transform:uppercase;letter-spacing:.1em}
.leaderboard-list{display:grid;gap:7px}.leaderboard-list .muted{color:var(--muted);font-size:.85rem}
.lb-row{display:grid;grid-template-columns:30px 1fr auto;gap:8px;align-items:center;text-align:left;
  padding:8px 11px;border:1px solid rgba(255,255,255,.1);border-radius:12px;background:rgba(255,255,255,.05)}
.lb-row .rk{font-weight:1000;color:var(--cyan)}.lb-row .nm{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lb-row .sc{color:var(--gold);font-weight:1000}

/* Guest nudge */
.nn-score-nudge{margin:14px 0 4px;padding:14px;border-radius:16px;border:1px solid rgba(124,92,255,.4);
  background:rgba(124,92,255,.12)}
.nn-score-nudge p{color:var(--text);margin-bottom:10px;font-weight:700}
.nn-nudge-btns{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.nn-nudge-signup{background:linear-gradient(135deg,var(--pink),var(--violet));color:#fff;font-weight:800;
  padding:.6rem 1.1rem;border-radius:12px;text-decoration:none}
.nn-nudge-later{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:12px;padding:.6rem 1.1rem;font-weight:700}

/* Countdown */
.countdown{position:absolute;inset:0;z-index:24;display:none;align-items:center;justify-content:center;
  pointer-events:none;font-size:clamp(5rem,28vw,12rem);font-weight:1000;color:#fff;
  text-shadow:0 0 40px rgba(22,224,255,.8),0 0 80px rgba(255,45,85,.5)}
.countdown.show{display:flex;animation:cd .9s ease-out}
@keyframes cd{0%{transform:scale(2.2);opacity:0}30%{opacity:1}100%{transform:scale(.6);opacity:0}}

/* Touch controls */
#td-controls{position:absolute;left:0;right:0;bottom:max(20px,calc(16px + var(--safe-bottom)));
  z-index:14;display:none;justify-content:space-between;align-items:flex-end;padding:0 16px;pointer-events:none}
.td-steer{display:flex;gap:12px;pointer-events:none}
.td-right-cluster{display:flex;gap:12px;align-items:flex-end;pointer-events:none}
.td-btn{pointer-events:all;touch-action:none;width:66px;height:66px;border-radius:50%;
  border:2px solid rgba(255,255,255,.16);color:var(--text);background:rgba(8,9,26,.55);
  backdrop-filter:blur(10px);box-shadow:0 0 26px rgba(255,45,85,.16),inset 0 1px rgba(255,255,255,.1);
  font-weight:1000;font-size:1.4rem;display:grid;place-items:center}
.td-btn.active,.td-btn:active{transform:scale(.95);background:rgba(255,45,85,.26);border-color:rgba(255,45,85,.55)}
.td-boost{width:78px;height:78px;border-color:rgba(22,224,255,.5);color:var(--cyan);font-size:1.7rem}
.td-brake{border-color:rgba(255,210,74,.5);color:var(--gold)}
@media (hover:none),(pointer:coarse){#td-controls.playing{display:flex}}

.toast{position:absolute;left:50%;top:120px;transform:translateX(-50%);z-index:13;pointer-events:none;
  color:var(--cyan);font-weight:1000;font-size:1.1rem;text-shadow:0 0 16px rgba(22,224,255,.8);opacity:0;
  transition:opacity .2s,transform .2s;white-space:nowrap}
.toast.show{opacity:1;transform:translateX(-50%) translateY(-6px)}

@media (max-width:560px){
  .game-bar-title{font-size:.78rem}
  .player-pill{display:none}
  .hud-chip b{font-size:.9rem}
}