*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;-webkit-font-smoothing:antialiased}
body{font-family:'Inter',-apple-system,system-ui,sans-serif;background:#080810;color:#E2E8F0;min-height:100vh;overflow:hidden}
#app{width:100vw;height:100vh;position:relative}
.screen{position:absolute;inset:0;display:none;flex-direction:column;align-items:center;justify-content:center;padding:20px}
.screen.active{display:flex}

.title{font-size:2rem;font-weight:700;text-align:center;background:linear-gradient(135deg,#EF4444,#F59E0B);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:4px}
.subtitle{font-size:.85rem;color:#64748B;margin-bottom:20px}
.btn-start{padding:12px 28px;border:1px solid rgba(239,68,68,0.2);border-radius:8px;background:rgba(239,68,68,0.08);color:#F87171;font-family:inherit;font-size:.9rem;font-weight:700;cursor:pointer;transition:all .25s ease;margin:4px}
.btn-start:hover{background:rgba(239,68,68,0.16);transform:translateY(-2px);box-shadow:0 4px 16px rgba(239,68,68,0.15)}
.btn-start.secondary{color:#94A3B8;border-color:rgba(100,116,139,0.2);background:transparent}
.hs-mini{margin-top:16px;font-size:.72rem;color:#64748B;font-family:'JetBrains Mono',monospace}

.level-title{font-size:1.2rem;color:#F87171;margin-bottom:16px}
.level-grid{display:grid;grid-template-columns:repeat(6,48px);gap:8px}
.lvl-btn{width:48px;height:48px;border:1px solid rgba(239,68,68,0.15);border-radius:6px;background:rgba(239,68,68,0.04);color:#94A3B8;font-family:'JetBrains Mono',monospace;font-size:.85rem;font-weight:700;cursor:pointer;transition:all .2s ease}
.lvl-btn:hover{background:rgba(239,68,68,0.12);color:#F87171}
.lvl-btn.cleared{color:#10B981;border-color:rgba(16,185,129,0.2)}
.lvl-btn.boss{color:#F59E0B;border-color:rgba(245,158,11,0.3)}

#gameScreen{padding:0}
canvas{display:block;width:100vw;height:100vh}
.game-hud{position:absolute;top:0;left:0;right:0;display:flex;justify-content:space-between;padding:10px 16px;pointer-events:none}
.hud-val{font-family:'JetBrains Mono',monospace;font-size:.85rem;font-weight:700;color:#F87171}
.hud-status{padding:2px 10px;border-radius:4px;font-size:.7rem;font-weight:700;letter-spacing:.06em}
.hud-status.frozen{color:#06B6D4;background:rgba(6,182,212,0.1)}
.hud-status.moving{color:#F59E0B;background:rgba(245,158,11,0.1)}

.over-title{font-size:1.6rem;color:#F87171;margin-bottom:8px}
.stars{font-size:2rem;margin-bottom:8px}
.final-score{font-family:'JetBrains Mono',monospace;font-size:1.6rem;font-weight:700;color:#F59E0B;margin-bottom:16px}

@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-4px)}50%{transform:translateX(4px)}75%{transform:translateX(-2px)}}
.shake{animation:shake .3s ease}

@media(max-width:640px){.level-grid{grid-template-columns:repeat(5,40px)}.lvl-btn{width:40px;height:40px}}