:root{--font-main: "Outfit", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", monospace;--bg-dark: #090b10;--panel-bg: rgba(18, 22, 34, .75);--panel-border: rgba(255, 255, 255, .12);--accent-primary: #3b82f6;--accent-primary-hover: #2563eb;--accent-purple: #8b5cf6;--accent-pink: #ec4899;--text-main: #f3f4f6;--text-muted: #9ca3af;--shadow-glow: 0 8px 32px 0 rgba(0, 0, 0, .45);--radius-lg: 16px;--radius-md: 10px;--radius-sm: 6px}*{box-sizing:border-box;margin:0;padding:0;user-select:none}html,body,#app{width:100%;height:100%;overflow:hidden;background-color:var(--bg-dark);font-family:var(--font-main);color:var(--text-main)}#sim-canvas{position:absolute;top:0;left:0;width:100%;height:100%;display:block;z-index:1}.glass{background:var(--panel-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--panel-border);box-shadow:var(--shadow-glow)}.top-bar{position:absolute;top:16px;left:16px;z-index:10;display:flex;align-items:center;justify-content:space-between;padding:10px 20px;border-radius:var(--radius-lg);gap:24px}.brand{display:flex;align-items:center;gap:12px}.logo-icon{font-size:24px}.brand-text h1{font-size:16px;font-weight:700;letter-spacing:-.02em;background:linear-gradient(135deg,#60a5fa,#c084fc);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.brand-text .subtitle{font-size:11px;color:var(--text-muted);font-weight:400;display:block}.header-status{display:flex;align-items:center;gap:12px}.badge{padding:4px 10px;font-size:11px;font-weight:600;border-radius:20px;letter-spacing:.03em;text-transform:uppercase}.badge.webgpu{background:#3b82f633;color:#60a5fa;border:1px solid rgba(96,165,250,.4)}.badge.webgl{background:#f59e0b33;color:#fbbf24;border:1px solid rgba(251,191,36,.4)}.github-link{color:var(--text-muted);transition:color .2s ease;display:flex;align-items:center}.github-link:hover{color:var(--text-main)}.control-panel{position:absolute;top:80px;left:16px;width:320px;max-height:calc(100vh - 140px);z-index:10;border-radius:var(--radius-lg);display:flex;flex-direction:column;transition:transform .3s cubic-bezier(.16,1,.3,1),opacity .3s ease}.control-panel.collapsed .panel-body{display:none}.panel-header{padding:14px 18px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(255,255,255,.08)}.panel-header h2{font-size:14px;font-weight:600;color:var(--text-main)}.icon-btn{background:transparent;border:none;color:var(--text-muted);cursor:pointer;padding:4px;border-radius:var(--radius-sm);transition:all .2s ease}.icon-btn:hover{color:var(--text-main);background:#ffffff1a}.panel-body{padding:16px 18px;overflow-y:auto;display:flex;flex-direction:column;gap:18px}.panel-body::-webkit-scrollbar{width:5px}.panel-body::-webkit-scrollbar-thumb{background:#fff3;border-radius:10px}.control-group{display:flex;flex-direction:column;gap:10px}.group-title{font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.preset-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.preset-btn{background:#ffffff0d;border:1px solid rgba(255,255,255,.1);color:var(--text-main);padding:8px 10px;font-size:12px;font-weight:500;border-radius:var(--radius-md);cursor:pointer;transition:all .2s ease}.preset-btn:hover{background:#ffffff1f}.preset-btn.active{background:linear-gradient(135deg,var(--accent-primary),var(--accent-purple));border-color:transparent;box-shadow:0 4px 12px #3b82f659}.styled-select{background:#ffffff0f;border:1px solid rgba(255,255,255,.12);color:var(--text-main);padding:8px 12px;font-size:13px;border-radius:var(--radius-md);outline:none;cursor:pointer}.styled-select option{background:#111420;color:#fff}.slider-row{display:flex;flex-direction:column;gap:4px}.slider-label{display:flex;justify-content:space-between;font-size:12px;color:var(--text-main)}.val-text{font-family:var(--font-mono);font-size:11px;color:var(--accent-primary)}input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:5px;border-radius:3px;background:#ffffff26;outline:none}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:14px;height:14px;border-radius:50%;background:var(--accent-primary);cursor:pointer;box-shadow:0 0 8px #3b82f699;transition:transform .1s ease}input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.2)}.toggle-row{display:flex;align-items:center;justify-content:space-between;font-size:12px}.switch{position:relative;display:inline-block;width:36px;height:20px}.switch input{opacity:0;width:0;height:0}.slider-switch{position:absolute;cursor:pointer;inset:0;background-color:#fff3;transition:.3s;border-radius:20px}.slider-switch:before{position:absolute;content:"";height:14px;width:14px;left:3px;bottom:3px;background-color:#fff;transition:.3s;border-radius:50%}input:checked+.slider-switch{background-color:var(--accent-primary)}input:checked+.slider-switch:before{transform:translate(16px)}.action-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.action-btn{padding:9px 12px;font-size:12px;font-weight:600;border-radius:var(--radius-md);border:none;cursor:pointer;transition:all .2s ease}.action-btn.full-width{width:100%;margin-bottom:4px;background:linear-gradient(135deg,var(--accent-pink),var(--accent-purple));color:#fff;box-shadow:0 4px 14px #ec489959}.action-btn.full-width:hover{opacity:.92;transform:translateY(-1px)}.action-btn.primary{background:var(--accent-primary);color:#fff}.action-btn.primary:hover{background:var(--accent-primary-hover);box-shadow:0 4px 12px #3b82f666}.action-btn.secondary{background:#ffffff1a;color:var(--text-main);border:1px solid rgba(255,255,255,.15)}.action-btn.secondary:hover{background:#ffffff2e}.stats-hud{position:absolute;bottom:16px;left:16px;z-index:10;display:flex;align-items:center;gap:14px;padding:8px 18px;border-radius:var(--radius-lg)}.stat-item{display:flex;flex-direction:column;align-items:center}.stat-value{font-family:var(--font-mono);font-size:14px;font-weight:700;color:#60a5fa}.stat-label{font-size:10px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.stat-divider{width:1px;height:24px;background:#ffffff1f}.interaction-hint{position:absolute;bottom:16px;right:16px;z-index:10;display:flex;align-items:center;gap:8px;padding:8px 16px;border-radius:var(--radius-lg);font-size:12px;color:var(--text-muted)}.hint-icon{font-size:14px}@media (max-width: 768px){.control-panel{width:calc(100vw - 32px);top:auto;bottom:70px;max-height:50vh}.interaction-hint{display:none}}.bunny-status{margin-top:8px;padding:6px 10px;border-radius:var(--radius-sm);background:#3b82f61f;border:1px solid rgba(59,130,246,.3);color:var(--accent-primary);font-size:11px;font-family:var(--font-mono);display:flex;align-items:center;gap:6px;animation:pulse-glow 1.5s ease-in-out infinite}@keyframes pulse-glow{0%,to{opacity:1}50%{opacity:.6}}