:root{color-scheme:dark;--ink:#F2F6FA;--muted:#9FB0C2;--plume:#F2A93B;--bad:#FF5A47;--good:#5BE0A0;--panel:rgba(14,22,32,.72);
  box-sizing:border-box}
*{box-sizing:border-box}
html,body{height:100%;margin:0;background:#141C26;color:var(--ink);font:16px/1.4 "IBM Plex Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;overflow:hidden;touch-action:none;-webkit-user-select:none;user-select:none}
#game{position:fixed;inset:0}
canvas{display:block;width:100%;height:100%}
.hud{position:fixed;left:14px;top:calc(12px + env(safe-area-inset-top,0px));display:flex;flex-direction:column;gap:8px;pointer-events:none;z-index:2}
.bar{width:200px;height:12px;background:rgba(255,255,255,.12);border-radius:6px;overflow:hidden}
.bar i{display:block;height:100%;width:100%;border-radius:6px;transition:width .08s linear}
#gasBar i{background:var(--plume)} #hpBar i{background:var(--good)}
.lbl{font-size:.72rem;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;font-weight:600;margin-bottom:2px}
#score{position:fixed;right:14px;top:calc(12px + env(safe-area-inset-top,0px));text-align:right;pointer-events:none;z-index:2}
#score .v{font-size:2rem;font-weight:700;font-variant-numeric:tabular-nums;line-height:1}
#speed{position:fixed;right:14px;bottom:calc(14px + env(safe-area-inset-bottom,0px));text-align:right;pointer-events:none;z-index:2}
#speed .v{font-size:2.4rem;font-weight:700;font-variant-numeric:tabular-nums;line-height:1}
#speed .v small{font-size:.9rem;color:var(--muted);font-weight:600}
#pops{position:fixed;inset:0;pointer-events:none;z-index:3;overflow:hidden}
.pop{position:absolute;left:50%;top:38%;transform:translate(-50%,-50%) scale(.6);font-weight:700;font-size:2rem;text-shadow:0 2px 12px rgba(0,0,0,.6);animation:pop 1.3s cubic-bezier(.2,1.4,.4,1) forwards;white-space:nowrap}
.pop.big{font-size:3.2rem;color:var(--plume)} .pop.good{color:var(--good)} .pop.bad{color:var(--bad)} .pop.small{font-size:1.3rem;top:46%}
@keyframes pop{0%{opacity:0;transform:translate(-50%,-50%) scale(.5)}15%{opacity:1;transform:translate(-50%,-50%) scale(1.15)}30%{transform:translate(-50%,-50%) scale(1)}80%{opacity:1}100%{opacity:0;transform:translate(-50%,-120%) scale(.9)}}
#flash{position:fixed;inset:0;pointer-events:none;z-index:1;opacity:0;background:#fff}
.overlay{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(10,16,24,.78);z-index:5;padding:20px}
.card{background:#1A2430;border:1px solid #2E3A48;border-radius:14px;padding:26px 28px;max-width:520px;width:100%}
.card h1{margin:0 0 6px;font-size:1.8rem;font-weight:700;letter-spacing:-.01em}
.card p{margin:0 0 12px;color:var(--muted)}
.keys{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;font-size:.92rem;margin:14px 0 18px}
kbd{font:inherit;font-size:.82rem;background:#0F161F;border:1px solid #3A4858;border-bottom-width:2px;border-radius:5px;padding:1px 7px;white-space:nowrap}
button{font:inherit;font-weight:600;border:0;background:var(--plume);color:#1A1200;padding:11px 22px;border-radius:8px;cursor:pointer;font-size:1.05rem}
#touch{position:fixed;left:0;right:0;bottom:calc(14px + env(safe-area-inset-bottom,0px));display:none;justify-content:space-between;padding:0 14px;z-index:4;pointer-events:none}
#touch div{display:flex;gap:10px;pointer-events:auto}
.tb{width:74px;height:74px;border-radius:50%;background:var(--panel);border:2px solid rgba(255,255,255,.25);color:var(--ink);font-weight:700;font-size:.8rem;display:flex;align-items:center;justify-content:center;text-align:center;line-height:1.1}
.tb.on{background:var(--plume);color:#1A1200}
@media (pointer:coarse){#touch{display:flex}}
#gear{position:fixed;right:14px;top:calc(72px + env(safe-area-inset-top,0px));z-index:4;width:40px;height:40px;padding:0;border-radius:50%;background:var(--panel);color:var(--ink);font-size:1.3rem;border:1px solid rgba(255,255,255,.2)}
.card.wide{max-width:760px;max-height:calc(100vh - 40px - env(safe-area-inset-top,0px) - env(safe-area-inset-bottom,0px));overflow:auto}
#sgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:8px 16px}
#sgrid h3{grid-column:1/-1;margin:10px 0 0;font-size:.78rem;color:var(--plume);letter-spacing:.06em;text-transform:uppercase}
.sf{display:flex;flex-direction:column;gap:2px;font-size:.85rem}
.sf span{color:var(--muted)} .sf .u{font-size:.75rem}
.sf input{font:inherit;width:100%;background:#0F161F;border:1px solid #3A4858;border-radius:6px;color:var(--ink);padding:5px 8px}
.sf input:invalid{border-color:var(--bad)}
.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
button.ghost{background:transparent;color:var(--ink);border:1px solid #3A4858}
#msg{position:fixed;left:50%;bottom:calc(100px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);color:var(--muted);font-size:.85rem;pointer-events:none;z-index:2;text-align:center}