:root{--bg-dark: #050508;--primary: #6366f1;--secondary: #ec4899;--accent: #00f3ff;--text-main: #f3f4f6;--text-muted: #9ca3af;--glass-bg: rgba(20, 20, 30, .4);--glass-border: rgba(255, 255, 255, .08);--neon-glow: 0 0 20px rgba(99, 102, 241, .4)}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-dark);color:var(--text-main);font-family:Outfit,sans-serif;min-height:100vh;overflow-x:hidden;position:relative}#bg-canvas{position:fixed;top:0;left:0;width:100%;height:100%;z-index:0;opacity:.6}.vignette{position:fixed;top:0;left:0;width:100%;height:100%;background:radial-gradient(circle at center,transparent 0%,#000 120%);z-index:1;pointer-events:none}.container{position:relative;z-index:10;max-width:1600px;margin:0 auto;padding:3rem 2rem}.header{text-align:center;margin-bottom:3rem;animation:fadeInDown 1s ease}h1{font-size:4.5rem;line-height:1;font-weight:800;background:linear-gradient(135deg,#fff 0%,#a5b4fc 50%,var(--accent) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:1rem;filter:drop-shadow(0 0 30px rgba(99,102,241,.3))}.subtitle{font-size:1.3rem;color:var(--text-muted);font-weight:300}.playground-layout{display:grid;grid-template-columns:1fr 400px;gap:2rem;min-height:70vh}.grid-display{background:var(--glass-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--glass-border);border-top:1px solid rgba(255,255,255,.2);border-radius:24px;padding:3rem;box-shadow:0 20px 50px #0000004d,inset 0 0 0 1px #ffffff0d;position:relative;overflow:hidden}.grid-display:before{content:"Grid Container";position:absolute;top:1.5rem;left:2rem;font-size:.9rem;font-weight:600;color:var(--accent);text-transform:uppercase;letter-spacing:2px}.grid-container{width:100%;height:100%;min-height:500px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding:3rem 0 0;transition:all .5s cubic-bezier(.4,0,.2,1)}.grid-item{background:linear-gradient(135deg,#6366f14d,#ec48994d);border:2px solid rgba(255,255,255,.1);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:2rem;font-weight:700;color:#fff;text-shadow:0 2px 10px rgba(0,0,0,.5);min-height:120px;transition:all .5s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden;animation:fadeIn .3s ease forwards}.grid-item:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s}.grid-item:hover:before{left:100%}.grid-item:hover{transform:scale(1.05);box-shadow:0 10px 30px #6366f180;border-color:var(--accent)}.control-panel{background:var(--glass-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--glass-border);border-top:1px solid rgba(255,255,255,.2);border-radius:24px;padding:2rem;box-shadow:0 20px 50px #0000004d,inset 0 0 0 1px #ffffff0d;max-height:85vh;overflow-y:auto}.control-panel h2{font-size:1.8rem;margin-bottom:1.5rem;color:var(--accent);text-transform:uppercase;letter-spacing:1px}.control-section{margin-bottom:2rem}.control-section h3{font-size:1.1rem;color:var(--text-main);margin-bottom:1rem;font-weight:600;text-transform:uppercase;letter-spacing:1px}.input-group{margin-top:1rem}.input-group label{display:block;font-size:.9rem;color:var(--text-muted);margin-bottom:.5rem;font-weight:500}.input-field{width:100%;background:#0a0a0f99;border:1px solid var(--glass-border);border-radius:8px;padding:.8rem 1rem;color:var(--text-main);font-family:Space Mono,monospace;font-size:.9rem;transition:all .3s ease}.input-field:focus{outline:none;border-color:var(--accent);box-shadow:0 0 10px #00f3ff4d}.input-with-btn{display:flex;gap:.5rem}.input-with-btn .input-field{flex:1}.range-slider{width:calc(100% - 60px);height:6px;background:#ffffff1a;border-radius:3px;outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none}.range-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:18px;height:18px;background:linear-gradient(135deg,var(--primary),var(--secondary));border-radius:50%;cursor:pointer;box-shadow:0 0 10px #6366f180;transition:all .3s ease}.range-slider::-webkit-slider-thumb:hover{transform:scale(1.2);box-shadow:0 0 15px #6366f1cc}.range-slider::-moz-range-thumb{width:18px;height:18px;background:linear-gradient(135deg,var(--primary),var(--secondary));border-radius:50%;cursor:pointer;box-shadow:0 0 10px #6366f180;border:none}.range-value{display:inline-block;min-width:50px;text-align:center;color:var(--accent);font-family:Space Mono,monospace;font-size:.9rem;margin-left:.5rem}.btn-group{display:flex;flex-direction:column;gap:.8rem}.btn{background:linear-gradient(135deg,#6366f133,#ec489933);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:1rem 1.5rem;color:var(--text-main);font-family:Outfit,sans-serif;font-size:.95rem;font-weight:500;cursor:pointer;transition:all .3s ease;position:relative;overflow:hidden;text-align:left}.btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.1),transparent);transition:left .3s}.btn:hover:before{left:100%}.btn:hover{background:linear-gradient(135deg,#6366f166,#ec489966);border-color:var(--accent);transform:translate(5px);box-shadow:0 5px 20px #6366f14d}.btn:active{transform:translate(5px) scale(.98)}.btn.active{background:linear-gradient(135deg,var(--primary),var(--secondary));border-color:var(--accent);box-shadow:0 0 20px #6366f180}.btn-label{display:block;font-size:.75rem;color:var(--text-muted);margin-top:.3rem;font-family:Space Mono,monospace}.btn-small{background:linear-gradient(135deg,#6366f14d,#ec48994d);border:1px solid rgba(255,255,255,.1);border-radius:8px;padding:.8rem 1.2rem;color:var(--text-main);font-family:Outfit,sans-serif;font-size:.85rem;font-weight:500;cursor:pointer;transition:all .3s ease;white-space:nowrap}.btn-small:hover{background:linear-gradient(135deg,var(--primary),var(--secondary));border-color:var(--accent);box-shadow:0 5px 15px #6366f166}.code-display{background:#0a0a0fcc;border:1px solid var(--glass-border);border-radius:12px;padding:1.5rem;margin-top:2rem;font-family:Space Mono,monospace;font-size:.85rem;color:var(--accent);overflow-x:auto;position:relative}.code-display:before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--primary),var(--secondary),var(--accent))}.code-line{color:#a5b4fc;margin:.3rem 0}.code-property{color:#ec4899}.code-value{color:#00f3ff}.control-panel::-webkit-scrollbar{width:8px}.control-panel::-webkit-scrollbar-track{background:transparent}.control-panel::-webkit-scrollbar-thumb{background:var(--glass-border);border-radius:4px}.control-panel::-webkit-scrollbar-thumb:hover{background:#fff3}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-30px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}.playground-layout{animation:fadeInUp 1s ease .2s both}@media (max-width: 1200px){.playground-layout{grid-template-columns:1fr}.control-panel{max-height:none}h1{font-size:3rem}}.current-code{margin-top:30px}