:root{--game-bg-primary:#f8fafc;--game-bg-secondary:#f1f5f9;--game-bg-tertiary:#e2e8f0;--game-bg-card:#fffffff2;--game-bg-glass:#fffc;--game-text-primary:#0f172a;--game-text-secondary:#475569;--game-text-muted:#94a3b8;--game-border-primary:#0000001a;--game-border-secondary:#0000000d;--game-accent-purple:#8b5cf6;--game-accent-blue:#3b82f6;--game-accent-cyan:#06b6d4;--game-accent-green:#10b981;--game-accent-amber:#f59e0b;--game-accent-orange:#f97316;--game-accent-pink:#ec4899;--game-accent-red:#ef4444;--game-canvas-bg:#fff;--game-canvas-grid:#0000000d;--game-canvas-node:#6366f1;--game-canvas-edge:#94a3b8;--game-shadow-sm:0 1px 2px #0000000d;--game-shadow-md:0 4px 6px #0000001a;--game-shadow-lg:0 10px 15px #0000001a;--game-shadow-glow:0 0 20px #6366f14d;--game-gradient-primary:linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);--game-gradient-success:linear-gradient(135deg, #10b981 0%, #059669 100%);--game-gradient-warning:linear-gradient(135deg, #f59e0b 0%, #d97706 100%);--game-gradient-danger:linear-gradient(135deg, #ef4444 0%, #dc2626 100%);--game-gradient-card:linear-gradient(145deg, #ffffffe6, #f1f5f9e6)}.dark,:root.dark,[data-theme=dark]{--game-bg-primary:#0a0a0f;--game-bg-secondary:#12121a;--game-bg-tertiary:#1a1a2e;--game-bg-card:#1a1a2ef2;--game-bg-glass:#0a0a0fcc;--game-text-primary:#f8fafc;--game-text-secondary:#94a3b8;--game-text-muted:#64748b;--game-border-primary:#ffffff1a;--game-border-secondary:#ffffff0d;--game-canvas-bg:#0a0a1a;--game-canvas-grid:#ffffff08;--game-canvas-node:#6366f1;--game-canvas-edge:#64748b;--game-shadow-sm:0 1px 2px #0000004d;--game-shadow-md:0 4px 6px #0006;--game-shadow-lg:0 10px 15px #00000080;--game-shadow-glow:0 0 20px #6366f180;--game-gradient-card:linear-gradient(145deg, #1a1a2ee6, #0a0a14e6)}.mega-game-container{background:var(--game-bg-primary);min-height:100vh;color:var(--game-text-primary);transition:background-color .3s,color .3s}.game-card{background:var(--game-bg-card);border:1px solid var(--game-border-primary);box-shadow:var(--game-shadow-md);border-radius:16px;transition:all .3s}.game-card:hover{box-shadow:var(--game-shadow-lg);transform:translateY(-2px)}.game-card-glass{background:var(--game-bg-glass);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--game-border-primary);border-radius:16px;transition:all .3s}.game-canvas{background:var(--game-canvas-bg);border:2px solid var(--game-border-primary);border-radius:12px}:root:not(.dark) .game-canvas,:root:not([data-theme=dark]) .game-canvas{background:#fff;box-shadow:inset 0 0 20px #0000000d}.dark .game-canvas,[data-theme=dark] .game-canvas{background:#0a0a1a;box-shadow:inset 0 0 20px #6366f10d}.graph-canvas{background:var(--game-canvas-bg);border-radius:12px}.game-text-primary{color:var(--game-text-primary)}.game-text-secondary{color:var(--game-text-secondary)}.game-text-muted{color:var(--game-text-muted)}.game-gradient-text{background:linear-gradient(135deg, var(--game-accent-purple) 0%, var(--game-accent-pink) 50%, var(--game-accent-orange) 100%);color:#0000;-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.game-btn{cursor:pointer;border:none;border-radius:.5rem;padding:.75rem 1.5rem;font-weight:600;transition:all .3s}.game-btn-primary{background:var(--game-gradient-primary);color:#fff;box-shadow:var(--game-shadow-glow)}.game-btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 30px #6366f199}.game-btn-secondary{border:2px solid var(--game-accent-purple);color:var(--game-accent-purple);background:0 0}.game-btn-secondary:hover{background:#6366f11a}.game-btn-ghost{background:var(--game-bg-tertiary);color:var(--game-text-primary);border:1px solid var(--game-border-primary)}.game-btn-ghost:hover{background:var(--game-bg-secondary)}.game-input{background:var(--game-bg-secondary);border:2px solid var(--game-border-primary);color:var(--game-text-primary);border-radius:.5rem;padding:.75rem 1rem;transition:all .3s}.game-input:focus{border-color:var(--game-accent-purple);outline:none;box-shadow:0 0 0 3px #6366f133}.game-progress-bar{background:var(--game-bg-tertiary);border-radius:4px;height:8px;overflow:hidden}.game-progress-fill{background:var(--game-gradient-primary);border-radius:4px;height:100%;transition:width .5s}.game-xp-bar{background:var(--game-bg-tertiary);border:1px solid var(--game-border-secondary);border-radius:6px;height:12px;overflow:hidden}.game-xp-fill{background:linear-gradient(90deg, var(--game-accent-purple), var(--game-accent-cyan), var(--game-accent-pink));background-size:200% 100%;border-radius:6px;height:100%;animation:2s linear infinite xp-shimmer}@keyframes xp-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.game-badge{border-radius:9999px;align-items:center;padding:.25rem .75rem;font-size:.75rem;font-weight:600;display:inline-flex}.game-badge-success{color:var(--game-accent-green);background:#10b9811a;border:1px solid #10b9814d}.game-badge-warning{color:var(--game-accent-amber);background:#f59e0b1a;border:1px solid #f59e0b4d}.game-badge-danger{color:var(--game-accent-red);background:#ef44441a;border:1px solid #ef44444d}.game-badge-purple{color:var(--game-accent-purple);background:#8b5cf61a;border:1px solid #8b5cf64d}.game-modal-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:1000;background:#000000b3;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.game-modal-content{background:var(--game-bg-card);border:1px solid var(--game-border-primary);border-radius:20px;width:90%;max-width:600px;max-height:80vh;padding:2rem;overflow-y:auto}.mega-game-container ::-webkit-scrollbar{width:8px;height:8px}.mega-game-container ::-webkit-scrollbar-track{background:var(--game-bg-secondary)}.mega-game-container ::-webkit-scrollbar-thumb{background:var(--game-accent-purple);border-radius:4px}.mega-game-container ::-webkit-scrollbar-thumb:hover{background:var(--game-accent-pink)}@keyframes game-float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes game-pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.8;transform:scale(1.05)}}@keyframes game-glow{0%,to{box-shadow:0 0 10px #6366f180}50%{box-shadow:0 0 30px #6366f1cc}}@keyframes game-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.game-animate-float{animation:3s ease-in-out infinite game-float}.game-animate-pulse{animation:2s ease-in-out infinite game-pulse}.game-animate-glow{animation:2s ease-in-out infinite game-glow}.game-animate-spin{animation:1s linear infinite game-spin}.game-stars-bg{pointer-events:none;z-index:0;width:100%;height:100%;position:fixed;top:0;left:0;overflow:hidden}.game-star{border-radius:50%;width:2px;height:2px;animation:3s infinite game-twinkle;position:absolute}.dark .game-star,[data-theme=dark] .game-star{background:#fff}:root:not(.dark) .game-star,:root:not([data-theme=dark]) .game-star{background:var(--game-accent-purple);opacity:.2}@keyframes game-twinkle{0%,to{opacity:.3;transform:scale(1)}50%{opacity:1;transform:scale(1.2)}}.game-grid-pattern{background-image:linear-gradient(var(--game-canvas-grid) 1px, transparent 1px), linear-gradient(90deg, var(--game-canvas-grid) 1px, transparent 1px);background-size:20px 20px}.game-particles{pointer-events:none;z-index:0;width:100%;height:100%;position:fixed;top:0;left:0;overflow:hidden}.game-particle{background:var(--game-accent-purple);opacity:.5;border-radius:50%;width:4px;height:4px;animation:15s infinite game-particle-float;position:absolute}@keyframes game-particle-float{0%,to{opacity:0;transform:translateY(100vh)rotate(0)}10%{opacity:.5}90%{opacity:.5}to{opacity:0;transform:translateY(-10vh)rotate(720deg)}}.game-level-card{background:var(--game-bg-card);border:2px solid var(--game-border-primary);cursor:pointer;border-radius:16px;padding:1.5rem;transition:all .3s}.game-level-card:hover:not(.locked){border-color:var(--game-accent-purple);box-shadow:var(--game-shadow-glow);transform:translateY(-4px)}.game-level-card.locked{opacity:.5;cursor:not-allowed}.game-level-card.completed{border-color:var(--game-accent-green)}.game-heap-node{border:2px solid #fff3;border-radius:50%;justify-content:center;align-items:center;font-weight:700;transition:all .3s;display:flex}.game-difficulty-easy{color:#ecfdf5;background:linear-gradient(135deg,#047857,#065f46)}.game-difficulty-medium{color:#fffbeb;background:linear-gradient(135deg,#b45309,#92400e)}.game-difficulty-hard{color:#fef2f2;background:linear-gradient(135deg,#b91c1c,#991b1b)}.game-difficulty-expert{color:#f5f3ff;background:linear-gradient(135deg,#6d28d9,#5b21b6)}.game-spinner{border:4px solid var(--game-bg-tertiary);border-top-color:var(--game-accent-purple);border-radius:50%;width:40px;height:40px;animation:1s linear infinite game-spin}