:root{--bg-dark:#050505;--panel-bg:#10141ee6;--neon-blue:#00f3ff;--neon-pink:#bc12ff;--neon-orange:#f90;--neon-green:#39ff14;--font-title:Orbitron,sans-serif;--font-body:'Roboto Mono',monospace}body{font-family:var(--font-body);background-color:var(--bg-dark);color:#fff;display:flex;justify-content:center;align-items:center;min-height:100vh;margin:0;padding:20px;box-sizing:border-box;overflow-x:hidden}.cyber-grid-bg{position:fixed;top:0;left:0;width:100%;height:100%;background-image:linear-gradient(#00f3ff08 1px,transparent 1px),linear-gradient(90deg,#00f3ff08 1px,transparent 1px);background-size:40px 40px;z-index:-2}.scanline{width:100%;height:200px;z-index:-1;background:linear-gradient(to bottom,#00f3ff00 0%,/* Arriba: Totalmente invisible (cola) */ #00f3ff80 80%,/* Cuerpo: Semitransparente */ #00f3ffff 100% /* Abajo: 100% Alpha (cabeza del escáner) */);position:fixed;left:0;animation:scan 8s linear infinite;pointer-events:none}@keyframes scan{0%{top:-200px}100%{top:100%}}.cyber-container{background:var(--panel-bg);padding:20px;border-radius:15px;border:1px solid #00f3ff4d;box-shadow:0 0 30px #00f3ff26;width:100%;max-width:1200px;backdrop-filter:blur(10px);display:block}.split-layout{display:flex;flex-direction:column;gap:20px}@media (max-width: 900px){body{display:block;padding:0;height:auto;overflow-x:hidden}.cyber-container{width:100%;min-height:100vh;border-radius:0;border:none;padding:15px;box-sizing:border-box}.left-panel,.right-panel{display:contents}.split-layout{display:flex;flex-direction:column}.main-header{order:1;margin-top:10px}.fun-logos-container{order:2;width:100%;max-width:60%!important;gap:1px;margin:5px auto}.instructions{order:3}.cyber-palette{order:4}.drawing-area{order:5}.button-group{order:6;flex-wrap:wrap}.navigation-controls{order:7;margin-bottom:20px}}.left-panel{width:100%}.right-panel{width:100%}.fun-logos-container{display:flex;justify-content:space-between;gap:15px;margin-bottom:20px}.cyber-logo-slot{flex:1;height:100px;border:1px dashed var(--neon-blue);border-radius:10px;display:flex;justify-content:center;align-items:center;background:#0006;overflow:hidden;position:relative;padding:5px}.cyber-img-responsive{width:100%;height:100%;object-fit:cover}.glow-box::after{content:'';position:absolute;top:0;left:0;right:0;bottom:0;box-shadow:inset 0 0 15px #00f3ff1a;pointer-events:none}.cyber-title{font-family:var(--font-title);font-size:1.8rem;margin:0 0 15px;text-align:center;color:#fff;text-shadow:0 0 5px var(--neon-blue)}.btc-glow{color:var(--neon-orange);text-shadow:0 0 15px var(--neon-orange)}.instructions{color:#aaa;font-size:.9rem}.blink{color:var(--neon-green);animation:blinking 1s infinite}@keyframes blinking{50%{opacity:0}}.cyber-palette{display:flex;justify-content:center;flex-wrap:wrap;gap:6px;padding:10px;background:#0000004d;border-radius:12px}.color-box{width:40px;height:40px;border-radius:50%;cursor:pointer;border:2px solid #fff3;transition:transform .2s}.color-box:hover{transform:scale(1.15)}.color-box.active{transform:scale(1.3);border-color:#fff;box-shadow:0 0 15px currentColor}.cyber-frame{border:2px solid var(--neon-pink);box-shadow:0 0 20px #bc12ff33;border-radius:12px;background-color:#fff;overflow:hidden;line-height:0;touch-action:none;margin-bottom:15px}.cyber-frame canvas{width:100%;height:auto;display:block;cursor:crosshair}.nav-btn{width:100%;padding:15px!important;font-size:1rem!important;background:#00f3ff1a!important;border:1px dashed var(--neon-blue)!important;text-shadow:0 0 5px var(--neon-blue);margin-top:15px;border-radius:5px;color:var(--neon-blue);cursor:pointer;text-transform:uppercase;font-family:var(--font-title);transition:.3s}.nav-btn:hover{background:var(--neon-blue)!important;color:#000!important;box-shadow:0 0 15px var(--neon-blue)}.button-group{display:flex;gap:15px;width:100%;margin-top:10px}.cyber-button{flex:1;background:transparent;border:1px solid var(--neon-blue);color:var(--neon-blue);font-family:var(--font-title);padding:15px;font-size:.9rem;text-transform:uppercase;cursor:pointer;border-radius:5px;transition:.3s}.cyber-button:hover:not(:disabled){background:var(--neon-blue);color:#000;box-shadow:0 0 20px var(--neon-blue)}.cyber-button:disabled{border-color:#444;color:#555;cursor:not-allowed}.btn-download{border-color:var(--neon-green);color:var(--neon-green)}.btn-download:hover{background:var(--neon-green);color:#000;box-shadow:0 0 20px var(--neon-green)}@media (min-width: 901px){.split-layout{flex-direction:row;align-items:flex-start}.left-panel{flex:1.8;width:auto}.right-panel{flex:1;width:auto;position:sticky;top:20px;display:flex;flex-direction:column;justify-content:center}.main-header{order:1;margin-top:5px;margin-bottom:5px}.instructions{order:3;text-align:left;width:100%;margin-bottom:15px;padding-left:5px}.cyber-palette{order:4;margin-bottom:15px;justify-content:center;gap:10px}.color-box{width:40px;height:40px}.drawing-area{order:5;margin-bottom:15px}.button-group{order:6}.navigation-controls{order:7;margin-top:10px}.cyber-title{font-size:1.5rem}.cyber-container{padding:10px}.cyber-button,.nav-btn{padding:12px!important;font-size:.9rem!important}.fun-logos-container{order:2;width:100%;max-width:100%;margin:5px auto}.cyber-logo-slot{height:85px!important}.fun-logos-container{gap:8px}}@media (max-width: 900px){.fun-logos-container{max-width:400px!important;width:100%;gap:10px}}@media (max-width: 500px){.fun-logos-container{max-width:99%!important}.cyber-logo-slot{height:80px!important}.cyber-palette{gap:px!important;padding:5px!important}.color-box{width:30px;height:30px}.instructions{color:#aaa;font-size:.88rem;margin:0!important;padding:0!important;line-height:1.2}}::-webkit-scrollbar{width:0;height:0;background:transparent}::-webkit-scrollbar-track{background:#050505}::-webkit-scrollbar-thumb{background:#333;border-radius:4px;border:1px solid #00f3ff}::-webkit-scrollbar-thumb:hover{background:#00f3ff;box-shadow:0 0 10px #00f3ff}