:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}*{margin:0;padding:0;box-sizing:border-box}body{background:linear-gradient(135deg,#1a1a2e,#16213e);min-height:100vh;display:flex;justify-content:center;align-items:center;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}.tetris-container{display:flex;flex-direction:column;align-items:center;padding:20px}h1{color:#00d4ff;font-size:3rem;margin-bottom:20px;text-shadow:0 0 10px #00d4ff,0 0 20px #00d4ff;letter-spacing:10px}.game-wrapper{display:flex;gap:20px}.board{border:4px solid #00d4ff;border-radius:4px;box-shadow:0 0 20px #00d4ff80;background:#0f0f23}.row{display:flex}.cell{width:28px;height:28px;border:1px solid #2a2a4a;transition:background-color .1s}.cell.small{width:20px;height:20px}.sidebar{display:flex;flex-direction:column;gap:15px;min-width:140px}.info-box{background:#00000080;border:2px solid #00d4ff;border-radius:8px;padding:12px;text-align:center}.info-box h3{color:#00d4ff;font-size:.9rem;margin-bottom:8px;letter-spacing:2px}.info-box p{color:#fff;font-size:1.5rem;font-weight:700}.next-piece{display:flex;flex-direction:column;align-items:center;padding:5px}.controls{background:#00000080;border:2px solid #444;border-radius:8px;padding:12px}.controls p{color:#aaa;font-size:.75rem;margin:4px 0}.overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#000c;display:flex;justify-content:center;align-items:center;z-index:100}.overlay-content{text-align:center;color:#fff}.overlay-content h2{font-size:3rem;color:#00d4ff;margin-bottom:20px;text-shadow:0 0 10px #00d4ff}.overlay-content p{font-size:1.2rem;margin-bottom:20px}.overlay-content button{background:#00d4ff;color:#1a1a2e;border:none;padding:12px 30px;font-size:1.2rem;font-weight:700;border-radius:8px;cursor:pointer;transition:all .3s}.overlay-content button:hover{background:#fff;transform:scale(1.05)}.game-controls{display:flex;flex-direction:column;gap:10px;margin-top:20px;padding:15px;background:#00000080;border-radius:12px}.control-row{display:flex;justify-content:center;gap:10px}.control-btn{width:60px;height:60px;font-size:24px;border:2px solid #00d4ff;background:#00d4ff33;color:#00d4ff;border-radius:12px;cursor:pointer;user-select:none;-webkit-user-select:none;touch-action:manipulation;display:flex;align-items:center;justify-content:center;transition:all .15s ease}.control-btn:hover{background:#00d4ff66;border-color:#fff}.control-btn:active{background:#00d4ff99;transform:scale(.95)}.control-btn.rotate-btn,.control-btn.hard-drop-btn{width:80px;height:50px;font-size:20px}.control-btn.small-btn{width:50px;height:40px;font-size:18px}.control-actions{margin-top:5px}@media(max-width:600px){.desktop-only{display:none}h1{font-size:2rem;letter-spacing:5px;margin-bottom:10px}.game-wrapper{flex-direction:column;align-items:center;gap:10px}.cell{width:18px;height:18px}.cell.small{width:14px;height:14px}.sidebar{flex-direction:row;flex-wrap:wrap;justify-content:center;min-width:auto;gap:10px}.info-box{padding:8px 12px;min-width:70px}.info-box h3{font-size:.7rem;margin-bottom:4px}.info-box p{font-size:1.1rem}.next-piece{padding:2px}.tetris-container{padding:10px}.overlay-content h2{font-size:2rem}.overlay-content p{font-size:1rem}}