:root{--bg-color: #1a1a2e;--bg-secondary: #16213e;--bg-tertiary: #0f3460;--glass-bg: rgba(255, 255, 255, .04);--glass-border: rgba(255, 255, 255, .1);--glass-hover: rgba(255, 255, 255, .08);--text-primary: #e8e8f0;--text-secondary: #9090b0;--text-muted: #5a5a7a;--accent-1: #2d6a4f;--accent-2: #1b4332;--accent-glow: rgba(45, 106, 79, .25);--success: #00d68f;--warning: #ffaa00;--danger: #ff4466;--gold: #ffd700;--radius: 12px;--radius-sm: 8px;--shadow: 0 8px 32px rgba(0, 0, 0, .4);--shadow-lg: 0 16px 64px rgba(0, 0, 0, .6);--transition: .2s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{width:100%;height:100%;overflow:hidden}body{font-family:Segoe UI,system-ui,-apple-system,sans-serif;color:var(--text-primary);background:var(--bg-color);line-height:1.5;-webkit-font-smoothing:antialiased}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--glass-border);border-radius:2px}.app{display:flex;flex-direction:column;width:100%;height:100%;background:var(--bg-color);position:relative;overflow:hidden}.bg-layer{position:fixed;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse at 20% 20%,rgba(124,58,237,.15) 0%,transparent 50%),radial-gradient(ellipse at 80% 80%,rgba(79,70,229,.12) 0%,transparent 50%),radial-gradient(ellipse at 50% 50%,rgba(0,0,0,.3) 0%,transparent 100%);pointer-events:none;z-index:0}.app-header{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;border-bottom:1px solid var(--glass-border);background:#0000004d;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:10;flex-shrink:0}.header-logo{display:flex;align-items:center;gap:10px}.logo-cube{font-size:1.4rem;filter:drop-shadow(0 0 8px var(--accent-glow))}.header-title{font-size:1.1rem;font-weight:700;letter-spacing:.2em;color:#c8cdd4;text-shadow:none}.header-theme-badge{display:flex;align-items:center;gap:8px;padding:6px 12px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:20px}.theme-swatches-mini{display:flex;gap:3px}.swatch-mini{display:block;width:10px;height:10px;border-radius:2px;border:1px solid rgba(255,255,255,.15)}.theme-name-badge{font-size:.75rem;color:var(--text-secondary);font-weight:500;letter-spacing:.05em}.header-author{display:flex;align-items:center;gap:10px}.author-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--accent-1),var(--accent-2));display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:800;color:#fff;letter-spacing:.05em;flex-shrink:0;box-shadow:0 0 12px var(--accent-glow)}.author-info{display:flex;flex-direction:column;gap:4px}.author-name{font-size:.82rem;font-weight:700;color:#c8cdd4;letter-spacing:.04em;white-space:nowrap}.author-stack{display:flex;gap:4px;flex-wrap:wrap}.tech-pill{font-size:.62rem;font-weight:600;padding:1px 7px;border-radius:20px;letter-spacing:.04em;white-space:nowrap;border:1px solid transparent}.tech-pill:nth-child(1){background:#10b98126;color:#34d399;border-color:#34d3994d}.tech-pill:nth-child(2){background:#3b82f626;color:#60a5fa;border-color:#60a5fa4d}.tech-pill:nth-child(3){background:#fbbf2426;color:#fbbf24;border-color:#fbbf244d}.tech-pill:nth-child(4){background:#ef444426;color:#f87171;border-color:#f871714d}.tech-pill:nth-child(5){background:#a78bfa26;color:#a78bfa;border-color:#a78bfa4d}.game-layout{display:grid;grid-template-columns:220px 1fr 220px;flex:1;min-height:0;position:relative;z-index:1}.sidebar{display:flex;flex-direction:column;gap:12px;padding:16px;overflow-y:auto;overflow-x:hidden}.sidebar-left{border-right:1px solid var(--glass-border);background:#0003}.sidebar-right{border-left:1px solid var(--glass-border);background:#0003}.stat-card{display:flex;align-items:center;gap:12px;padding:12px 14px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:border-color var(--transition)}.stat-card:hover{border-color:#7c3aed66}.stat-icon{font-size:1.4rem;line-height:1}.stat-content{flex:1}.stat-label{font-size:.65rem;font-weight:700;letter-spacing:.15em;color:var(--text-muted);text-transform:uppercase;margin-bottom:2px}.stat-value{font-size:1.5rem;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text-primary);line-height:1}.timer-display.running{color:#d4cfc8}@keyframes pop{0%{transform:scale(1)}40%{transform:scale(1.25);color:#a78bfa}to{transform:scale(1)}}.stat-value.pop{animation:pop .25s ease}.game-controls{display:flex;flex-direction:column;gap:12px}.solved-banner{display:flex;align-items:center;justify-content:center;gap:8px;padding:10px;background:linear-gradient(135deg,#00d68f33,#00d68f1a);border:1px solid rgba(0,214,143,.5);border-radius:var(--radius);font-weight:700;letter-spacing:.1em;color:#00d68f;animation:pulse-success 1.5s ease-in-out infinite}@keyframes pulse-success{0%,to{box-shadow:0 0 8px #00d68f4d}50%{box-shadow:0 0 20px #00d68f99}}.solved-icon{font-size:1.1rem}button{cursor:pointer;border:none;outline:none;font-family:inherit;transition:all var(--transition)}.btn-primary{width:100%;padding:11px 16px;background:linear-gradient(135deg,var(--accent-1),var(--accent-2));color:#fff;font-weight:700;font-size:.82rem;letter-spacing:.08em;border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.15);box-shadow:0 4px 16px var(--accent-glow);position:relative;overflow:hidden}.btn-primary:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(135deg,rgba(255,255,255,.15),transparent);opacity:0;transition:opacity var(--transition)}.btn-primary:hover:before{opacity:1}.btn-primary:hover{box-shadow:0 6px 20px var(--accent-glow),0 0 0 1px #2d6a4f66;transform:translateY(-1px)}.btn-primary:active{transform:translateY(0)}.btn-start{font-size:.85rem;letter-spacing:.1em;padding:12px 16px}.btn-secondary{width:100%;padding:9px 16px;background:var(--glass-bg);color:var(--text-secondary);font-weight:600;font-size:.8rem;letter-spacing:.06em;border-radius:var(--radius-sm);border:1px solid var(--glass-border)}.btn-secondary:hover{background:var(--glass-hover);color:var(--text-primary);border-color:#fff3}.action-buttons{display:flex;flex-direction:column;gap:8px}.moves-section{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius);padding:12px}.moves-title{font-size:.65rem;font-weight:700;letter-spacing:.15em;color:var(--text-muted);text-transform:uppercase;margin-bottom:10px;text-align:center}.moves-grid{display:flex;flex-direction:column;gap:6px}.move-pair{display:grid;grid-template-columns:20px 1fr 1fr;align-items:center;gap:6px}.move-label{font-size:.7rem;font-weight:700;color:var(--text-muted);text-align:right}.btn-move{padding:6px 4px;background:#ffffff0d;color:var(--text-primary);font-size:.75rem;font-weight:600;border-radius:6px;border:1px solid var(--glass-border);letter-spacing:.03em}.btn-move:hover:not(:disabled){background:#7c3aed40;border-color:#7c3aed80;color:#c4b5fd;box-shadow:0 0 8px #7c3aed4d}.btn-move-ccw:hover:not(:disabled){background:#4f46e540;border-color:#4f46e580;color:#a5b4fc}.btn-move:active:not(:disabled){transform:scale(.96)}.btn-move:disabled{opacity:.3;cursor:not-allowed}.panel-toggles{display:flex;gap:8px}.btn-toggle{flex:1;padding:8px;background:var(--glass-bg);color:var(--text-secondary);font-size:.72rem;font-weight:600;border-radius:var(--radius-sm);border:1px solid var(--glass-border);letter-spacing:.03em}.btn-toggle:hover{background:var(--glass-hover);color:var(--text-primary);border-color:#fff3}.cube-viewport{position:relative;min-height:0;display:flex;flex-direction:column}.cube-viewport canvas{flex:1;min-height:0;display:block}.viewport-hint{position:absolute;bottom:12px;left:50%;transform:translate(-50%);font-size:.7rem;color:var(--text-muted);background:#0006;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);padding:4px 12px;border-radius:20px;border:1px solid var(--glass-border);white-space:nowrap;pointer-events:none}.glass-panel{background:#0f0f23d9;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--glass-border);border-radius:var(--radius);box-shadow:var(--shadow-lg)}.settings-panel{display:flex;flex-direction:column;gap:0;padding:0;overflow:hidden;border-radius:var(--radius);max-height:calc(100vh - 80px)}.panel-header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--glass-border)}.panel-header h2{font-size:.9rem;font-weight:700;letter-spacing:.08em;color:var(--text-primary)}.btn-close{width:26px;height:26px;display:flex;align-items:center;justify-content:center;background:#ffffff0d;color:var(--text-muted);font-size:.8rem;border-radius:6px;border:1px solid var(--glass-border)}.btn-close:hover{background:#ff3c3c33;color:#ff6680;border-color:#ff3c3c66}.settings-tabs{display:flex;border-bottom:1px solid var(--glass-border)}.tab-btn{flex:1;padding:8px 6px;background:transparent;color:var(--text-muted);font-size:.72rem;font-weight:600;letter-spacing:.06em;border-radius:0;border-bottom:2px solid transparent;transition:all var(--transition)}.tab-btn:hover{color:var(--text-primary);background:var(--glass-bg)}.tab-btn.active{color:#a78bfa;border-bottom-color:#a78bfa;background:#a78bfa14}.settings-section{padding:12px;overflow-y:auto;flex:1}.loading-text,.empty-text{text-align:center;color:var(--text-muted);font-size:.8rem;padding:20px}.warning-text{font-size:.72rem;color:var(--warning);background:#ffaa001a;border:1px solid rgba(255,170,0,.3);border-radius:var(--radius-sm);padding:8px;margin-bottom:10px}.themes-list{display:flex;flex-direction:column;gap:8px}.theme-card{display:flex;align-items:center;gap:10px;padding:10px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition);position:relative}.theme-card:hover{background:var(--glass-hover);border-color:#a78bfa66}.theme-card.selected{border-color:#a78bfa;background:#a78bfa1f}.theme-swatches{display:flex;gap:3px;flex-wrap:wrap;width:48px}.swatch{width:14px;height:14px;border-radius:3px;border:1px solid rgba(255,255,255,.15);flex-shrink:0}.theme-name{flex:1;font-size:.8rem;font-weight:600;color:var(--text-primary)}.check{color:#a78bfa;font-size:.9rem;font-weight:700}.difficulty-list{display:flex;flex-direction:column;gap:8px}.difficulty-card{display:flex;align-items:center;gap:12px;padding:12px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition)}.difficulty-card:hover{background:var(--glass-hover);border-color:var(--diff-color, rgba(255,255,255,.2))}.difficulty-card.selected{border-color:var(--diff-color, #a78bfa);background:color-mix(in srgb,var(--diff-color, #a78bfa) 15%,transparent)}.difficulty-card input[type=radio]{accent-color:var(--diff-color, #a78bfa)}.diff-content{display:flex;flex-direction:column;gap:2px}.diff-label{font-size:.82rem;font-weight:700}.diff-desc{font-size:.7rem;color:var(--text-muted)}.section-hint{font-size:.75rem;color:var(--text-muted);margin-bottom:10px}.custom-colors{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}.color-row{display:flex;align-items:center;justify-content:space-between}.color-label{font-size:.75rem;color:var(--text-secondary);font-weight:500}.color-input-wrap{display:flex;align-items:center;gap:8px}input[type=color]{width:32px;height:24px;border:1px solid var(--glass-border);border-radius:4px;background:none;cursor:pointer;padding:1px}.color-hex{font-size:.7rem;color:var(--text-muted);font-family:Courier New,monospace}.btn-apply{width:100%;margin-top:4px}.sidebar-placeholder{display:flex;flex-direction:column;gap:16px;padding:4px}.face-preview{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.face-preview-item{display:flex;flex-direction:column;align-items:center;gap:4px}.face-preview-swatch{width:32px;height:32px;border-radius:6px;border:1px solid rgba(255,255,255,.15);box-shadow:0 2px 8px #0000004d}.face-preview-label{font-size:.65rem;font-weight:700;color:var(--text-muted);letter-spacing:.1em}.help-text{font-size:.75rem;color:var(--text-muted);line-height:1.5}.move-legend{display:flex;flex-direction:column;gap:4px;padding:12px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-sm)}.move-legend p{font-size:.72rem;color:var(--text-secondary)}.move-legend strong{color:#a78bfa}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}.scoreboard-modal{width:100%;max-width:520px;max-height:80vh;display:flex;flex-direction:column;overflow:hidden}.scores-container{overflow-y:auto;padding:12px;flex:1}.scores-table{width:100%;border-collapse:collapse;font-size:.82rem}.scores-table th{text-align:left;padding:8px 10px;font-size:.65rem;letter-spacing:.12em;text-transform:uppercase;color:var(--text-muted);border-bottom:1px solid var(--glass-border)}.scores-table td{padding:10px;border-bottom:1px solid rgba(255,255,255,.04);color:var(--text-secondary)}.scores-table tr:hover td{background:var(--glass-bg)}.scores-table tr.rank-1 td{color:var(--gold)}.scores-table tr.rank-2 td{color:silver}.scores-table tr.rank-3 td{color:#cd7f32}.rank-cell{font-size:1rem;text-align:center}.num-cell{font-family:Courier New,monospace;font-weight:600}.theme-cell{font-size:.72rem;color:var(--text-muted)}.solved-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000c;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;z-index:200;padding:20px}.solved-modal{width:100%;max-width:380px;padding:32px;display:flex;flex-direction:column;align-items:center;gap:20px;text-align:center;animation:solved-in .5s cubic-bezier(.34,1.56,.64,1)}@keyframes solved-in{0%{opacity:0;transform:scale(.7) translateY(30px)}to{opacity:1;transform:scale(1) translateY(0)}}.solved-emoji{font-size:3.5rem;animation:bounce-emoji .8s ease .2s infinite alternate}@keyframes bounce-emoji{0%{transform:translateY(0) scale(1)}to{transform:translateY(-8px) scale(1.05)}}.solved-title{font-size:2rem;font-weight:900;letter-spacing:.2em;background:linear-gradient(135deg,#a78bfa,#60d9fa,#00d68f);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.solved-stats{display:flex;gap:32px}.solved-stat{display:flex;flex-direction:column;align-items:center;gap:4px}.solved-stat-label{font-size:.65rem;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--text-muted)}.solved-stat-value{font-size:1.8rem;font-weight:700;color:var(--text-primary);font-variant-numeric:tabular-nums}.submit-score{display:flex;flex-direction:column;gap:10px;width:100%}.name-input{width:100%;padding:10px 14px;background:#ffffff12;border:1px solid var(--glass-border);border-radius:var(--radius-sm);color:var(--text-primary);font-size:.9rem;font-family:inherit;text-align:center;outline:none;transition:border-color var(--transition)}.name-input:focus{border-color:#a78bfa;box-shadow:0 0 0 2px #a78bfa33}.score-saved{font-size:.9rem;color:var(--success);font-weight:600}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}@media (max-width: 900px){.game-layout{grid-template-columns:180px 1fr 180px}}@media (max-width: 700px){.game-layout{grid-template-columns:1fr;grid-template-rows:auto 1fr auto}.sidebar{flex-direction:row;flex-wrap:wrap;max-height:none;overflow-x:auto;border:none;border-top:1px solid var(--glass-border);padding:10px}.sidebar-right{display:none}.sidebar-left{order:2}.cube-viewport{order:1;min-height:300px}.game-layout>.sidebar-right{order:3}}