:root{--nyan-pink:#ff66b2;--nyan-yellow:#fc0;--nyan-blue:#00f2ff;--bg-dark:#120520;--glass:#0009;--glass-border:#fff3}*{box-sizing:border-box;-webkit-user-select:none;user-select:none;touch-action:none;margin:0;padding:0}body{background-color:var(--bg-dark);color:#fff;justify-content:center;align-items:center;width:100vw;height:100vh;font-family:"M PLUS Rounded 1c",sans-serif;display:flex;overflow:hidden}#app{background:url(/bg.png) 50%/cover no-repeat;flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:relative}#app:after{content:"";background:#0000004d;width:100%;height:100%;position:absolute;top:0;left:0}#game-container{z-index:10;border:4px solid var(--nyan-pink);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#000000b3;border-radius:20px;position:relative;box-shadow:0 0 50px #ff66b24d}canvas#gameCanvas{border-radius:16px;display:block}#ui-layer{pointer-events:none;z-index:100;width:100%;height:100%;position:absolute;top:0;left:0}.overlay{-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:4px solid var(--nyan-yellow);text-align:center;pointer-events:auto;background:#1a0a2ef2;border-radius:30px;width:85%;max-width:380px;padding:40px 30px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 20px 60px #000c}.hidden{opacity:0;pointer-events:none;transform:translate(-50%,-40%)scale(.9)}.logo{color:var(--nyan-yellow);text-shadow:0 0 20px #ffcc0080;margin-bottom:20px;font-size:3rem;font-weight:900}button{background:var(--nyan-pink);color:#fff;cursor:pointer;border:none;border-radius:50px;width:100%;margin-top:15px;padding:15px 30px;font-size:1.1rem;font-weight:800;box-shadow:0 5px 15px #ff66b266}#hud{z-index:50;justify-content:space-between;align-items:flex-start;width:100%;padding:0 20px;display:flex;position:absolute;top:20px}.hud-item label{color:var(--nyan-yellow);font-size:.7rem}.hud-item span{font-size:1.5rem;font-weight:900}#next-piece-box{background:var(--glass);border:1px solid var(--glass-border);border-radius:20px;padding:10px}#controls{z-index:100;gap:10px;display:flex;position:absolute;bottom:20px}#controls button{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--glass-border);background:#ffffff1a;border-radius:50%;width:60px;height:60px;padding:0}.back-link{z-index:200;color:#fff;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#00000080;border:1px solid #fff3;border-radius:20px;padding:8px 15px;font-size:.8rem;font-weight:800;text-decoration:none;position:absolute;top:15px;left:15px}