:root{color-scheme:dark;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100vh;background:#0a0a0a;color:#fafafa}.game-shell{min-height:100vh;display:grid;place-items:center;padding:1rem;background:radial-gradient(ellipse at 50% 30%,#1a1a2e,#0a0a0a 70%)}.game-container{display:flex;flex-direction:column;align-items:center;gap:.75rem}.game-title{font-size:1.8rem;font-weight:700;letter-spacing:-.03em;background:linear-gradient(135deg,#e74c3c,#3498db,#2ecc71);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hud{display:flex;gap:2rem}.hud-item{display:flex;flex-direction:column;align-items:center}.hud-label{font-size:.65rem;letter-spacing:.15em;text-transform:uppercase;color:#fff6}.hud-value{font-size:1.6rem;font-weight:700;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:#fafafa}.hud-high{color:#f1c40f}.canvas-wrap{position:relative;border:2px solid rgba(255,255,255,.1);border-radius:12px;overflow:hidden;box-shadow:0 0 40px #00000080,0 0 120px #3498db0f}canvas{display:block;background:#111}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;background:#000000bf;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:10}.overlay-box{text-align:center;padding:2rem;max-width:300px}.overlay-box h2{font-size:1.8rem;font-weight:700;margin-bottom:.5rem}.overlay-box p{color:#ffffffb3;font-size:.9rem;margin-bottom:.75rem}.color-legend{text-align:left;display:inline-block;font-size:.85rem;color:#ffffffbf;line-height:2}.color-legend span{display:inline-block;width:14px;height:14px;border-radius:3px;vertical-align:middle;margin-right:4px}.color-legend kbd{background:#ffffff1a;border:1px solid rgba(255,255,255,.15);border-radius:3px;padding:1px 6px;font-size:.75rem;font-family:ui-monospace,monospace}.controls-hint{font-size:.8rem;color:#ffffff73;line-height:1.8}.controls-hint kbd{background:#ffffff1a;border:1px solid rgba(255,255,255,.15);border-radius:3px;padding:1px 6px;font-size:.75rem;font-family:ui-monospace,monospace}.btn-start{margin-top:1rem;padding:.6rem 2rem;font-size:1rem;font-weight:600;border:none;border-radius:8px;cursor:pointer;background:linear-gradient(135deg,#e74c3c,#3498db);color:#fff;transition:transform .1s,box-shadow .2s}.btn-start:hover{transform:translateY(-1px);box-shadow:0 4px 20px #3498db4d}.btn-start:active{transform:translateY(0)}.final-score strong{font-size:2rem;color:#fafafa;font-family:ui-monospace,monospace}.final-high strong{font-size:1.2rem;color:#f1c40f;font-family:ui-monospace,monospace}.restart-hint{font-size:.75rem;color:#ffffff4d;margin-top:.5rem}.mobile-controls{display:none;width:100%;max-width:400px;justify-content:space-between;align-items:center;padding:.5rem 0}.mobile-colors{display:flex;gap:8px}.mobile-color-btn{width:36px;height:36px;border-radius:8px;border:2px solid rgba(255,255,255,.2);cursor:pointer;transition:transform .1s}.mobile-color-btn:active{transform:scale(.9)}.mobile-arrows{display:flex;gap:8px}.mobile-arrow{width:48px;height:48px;font-size:1.4rem;border-radius:10px;border:1px solid rgba(255,255,255,.15);background:#ffffff0f;color:#fafafa;cursor:pointer;user-select:none;-webkit-user-select:none;touch-action:manipulation}.mobile-arrow:active{background:#ffffff26}@media(max-width:500px){.mobile-controls{display:flex}canvas{width:100%;height:auto}.canvas-wrap{width:100%;max-width:400px}}