: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:#0f172a;color:#e2e8f0}.game-container{min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:1.5rem 1rem;gap:1.5rem}.game-header{text-align:center}.game-title{font-size:2rem;font-weight:800;letter-spacing:-.03em;background:linear-gradient(135deg,#60a5fa,#a78bfa,#f472b6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.game-stats{display:flex;gap:1.5rem;justify-content:center;margin-top:.5rem}.stat{font-size:.85rem;color:#94a3b8;font-weight:500}.level-select{display:flex;gap:.5rem;flex-wrap:wrap;justify-content:center}.level-btn{padding:.4rem 1rem;border-radius:9999px;border:1px solid #334155;background:#1e293b;color:#94a3b8;font-size:.8rem;font-weight:600;cursor:pointer;transition:all .15s ease}.level-btn:hover{background:#334155;color:#e2e8f0}.level-btn.active{background:#6366f1;border-color:#6366f1;color:#fff}.tubes-area{display:flex;flex-wrap:wrap;justify-content:center;gap:.75rem;max-width:800px;padding:1rem}.tube-wrapper{display:flex;flex-direction:column;align-items:center;cursor:pointer;transition:transform .15s ease;-webkit-user-select:none;user-select:none}.tube-wrapper:hover{transform:translateY(-4px)}.tube-wrapper.selected{transform:translateY(-12px)}.tube-wrapper.selected .tube{box-shadow:0 0 20px #6366f180,0 0 40px #6366f133;border-color:#818cf8}.tube{width:52px;height:160px;border:2.5px solid #475569;border-top:none;border-radius:0 0 12px 12px;display:flex;flex-direction:column;overflow:hidden;background:#0f172a99;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);transition:box-shadow .2s ease,border-color .2s ease;position:relative}.tube:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:#64748b;border-radius:0 0 2px 2px}.segment{flex:1;border-bottom:1px solid rgba(0,0,0,.15);transition:background-color .2s ease}.segment:last-child{border-bottom:none}.segment.empty{background:transparent;border-bottom:1px solid rgba(71,85,105,.15)}.segment.empty:last-child{border-bottom:none}.tube-base{width:60px;height:6px;background:#475569;border-radius:0 0 6px 6px;margin-top:-1px}.controls{display:flex;gap:.75rem}.btn-primary{padding:.6rem 1.5rem;border-radius:10px;border:none;background:#6366f1;color:#fff;font-size:.9rem;font-weight:600;cursor:pointer;transition:background .15s ease}.btn-primary:hover{background:#4f46e5}.btn-secondary{padding:.6rem 1.5rem;border-radius:10px;border:1px solid #334155;background:#1e293b;color:#94a3b8;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .15s ease}.btn-secondary:hover{background:#334155;color:#e2e8f0}.win-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;display:grid;place-items:center;z-index:100;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);animation:fadeIn .3s ease}.win-card{background:#1e293b;border:1px solid #334155;border-radius:1rem;padding:2.5rem;text-align:center;display:flex;flex-direction:column;gap:1rem;animation:scaleIn .3s ease}.win-card h2{font-size:1.75rem;font-weight:800;background:linear-gradient(135deg,#fbbf24,#f59e0b);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.win-card p{color:#94a3b8;font-size:.95rem}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes scaleIn{0%{transform:scale(.9);opacity:0}to{transform:scale(1);opacity:1}}