:root{--bg-color: #0c0e14;--glass-bg: rgba(255, 255, 255, .05);--glass-border: rgba(255, 255, 255, .1);--primary: #8b5cf6;--primary-glow: rgba(139, 92, 246, .5);--secondary: #06b6d4;--text: #f8fafc;--text-dim: #94a3b8;--danger: #ef4444}body{margin:0;padding:0;font-family:Outfit,Inter,system-ui,sans-serif;background-color:var(--bg-color);color:var(--text);overflow-x:hidden;height:100vh;display:flex;justify-content:center;align-items:center}#app{width:100%;max-width:1000px;padding:2rem;display:flex;flex-direction:column;gap:2rem;min-height:100vh;justify-content:center}.screen{display:flex;flex-direction:column;gap:2rem;transition:opacity .3s ease,transform .3s ease}.screen.hidden{display:none;opacity:0;transform:translateY(20px)}header{text-align:center;padding:1.5rem;background:var(--glass-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:24px;border:1px solid var(--glass-border);box-shadow:0 8px 32px #0000005e}h1{font-size:3rem;margin:0;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-1px}.status-bar{margin-top:.5rem;font-size:1.2rem;color:var(--text-dim)}.options-panel{background:var(--glass-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:2rem;border-radius:32px;border:1px solid var(--glass-border);display:flex;flex-direction:column;gap:1.5rem;max-width:500px;margin:0 auto;width:100%}.options-group{display:flex;flex-direction:column;gap:.5rem}.options-group label{font-weight:600;font-size:.9rem;color:var(--text-dim)}.config-input{background:#0000004d;border:1px solid var(--glass-border);color:#fff;padding:.8rem;border-radius:12px;font-family:inherit;font-size:1.1rem;text-align:center}.how-to-play{background:var(--glass-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:1.5rem 2rem;border-radius:24px;border:1px solid var(--glass-border);max-width:500px;margin:0 auto;width:100%;font-size:.95rem;line-height:1.6;color:var(--text-dim)}.how-to-play strong{color:var(--secondary)}.radio-group{display:flex;gap:2rem;justify-content:center;padding:.5rem}.radio-label{cursor:pointer;display:flex;align-items:center;gap:.5rem;font-size:1.1rem}.game-board{display:flex;justify-content:space-around;align-items:flex-end;min-height:350px;gap:1.5rem}.pile{display:flex;flex-direction:column-reverse;align-items:stretch;gap:6px;padding:10px;border-radius:16px;transition:all .2s ease;cursor:pointer;flex:1;max-width:180px;border:1px solid transparent}.pile:hover{background:var(--glass-bg);border-color:var(--glass-border)}.pile.active{background:#8b5cf61a;border-color:var(--primary)}.item{height:20px;background:linear-gradient(90deg,var(--primary),var(--secondary));border-radius:4px;box-shadow:0 0 10px var(--primary-glow);transition:transform .2s,opacity .3s,background .2s;pointer-events:none}.item.selected{transform:scale(1.05);background:#fff;box-shadow:0 0 15px #fffc}.controls{display:flex;flex-direction:column;align-items:center;gap:1.5rem}.secondary-controls{display:flex;gap:1rem}button{padding:1rem 2rem;font-size:1.1rem;font-weight:600;border-radius:12px;border:none;cursor:pointer;transition:all .2s ease}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 15px var(--primary-glow)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px var(--primary-glow)}.btn-primary:disabled{background:#4a4a4a;box-shadow:none;cursor:not-allowed;opacity:.5}.btn-outline{background:transparent;border:1px solid var(--glass-border);color:var(--text)}.btn-outline:hover{background:var(--glass-bg)}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.app-container{animation:fadeIn .8s ease-out}.overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#000c;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);display:none;justify-content:center;align-items:center;z-index:100}.overlay.show{display:flex}.modal{background:var(--bg-color);padding:3rem;border-radius:32px;border:1px solid var(--primary);text-align:center;max-width:400px}