*{margin:0;padding:0;box-sizing:border-box}body{background:#0a0a1a;color:#eee;font-family:system-ui,-apple-system,sans-serif;display:flex;justify-content:center;min-height:100vh;-webkit-user-select:none;user-select:none}#app{max-width:480px;width:100%;padding:16px;display:flex;flex-direction:column;align-items:center;gap:12px}#loading{margin-top:40vh;font-size:1.2rem;color:#7b68ae}.hud{width:100%;display:flex;justify-content:space-between;align-items:center;padding:8px 4px}.score{font-size:1.3rem;font-weight:600;color:#ffdd91}.drowsiness-container{display:flex;align-items:center;gap:4px}.drowsiness-bar{width:120px;height:16px;background:#1a1a3e;border-radius:8px;overflow:hidden;border:1px solid #2d2d6b}.drowsiness-fill{height:100%;width:100%;background:linear-gradient(90deg,#4a3f8f,#a89cc8);border-radius:8px;transition:width .4s ease}.board{display:grid;gap:2px;width:100%;aspect-ratio:1;background:#1a1a3e;border-radius:12px;padding:4px;border:2px solid #2d2d6b;box-shadow:0 0 24px #4a3f8f4d}.cell{display:flex;align-items:center;justify-content:center;background:#16213e;border-radius:4px;cursor:pointer;transition:transform .15s,border-color .15s,opacity .3s,background .15s;border:2px solid transparent;aspect-ratio:1;overflow:hidden}.cell img{width:100%;height:100%;object-fit:contain;image-rendering:pixelated;pointer-events:none;transition:transform .15s ease}.cell:hover{background:#1e2d50}.cell.selected{border-color:#ffdd91;transform:scale(1.08);z-index:1;background:#1e2d50}.cell.selected img{transform:scale(1.05)}.cell.matched img{animation:match-pulse .4s ease-in-out}.cell.clearing{opacity:0;transform:scale(.3)}.cell.clearing img{animation:none}.cell.filling img{animation:drop-in .25s ease-out}@keyframes match-pulse{0%,to{transform:scale(1)}50%{transform:scale(1.3) rotate(5deg)}}@keyframes drop-in{0%{opacity:0;transform:translateY(-12px) scale(.6)}to{opacity:1;transform:translateY(0) scale(1)}}.message{height:24px;font-size:.9rem;color:#ff9b6a;opacity:0;transition:opacity .3s}.message.visible{opacity:1}.game-over-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0a0a1ad9;display:flex;align-items:center;justify-content:center;z-index:10}.game-over-content{background:#1a1a3e;border:2px solid #4a3f8f;border-radius:16px;padding:32px 48px;text-align:center;display:flex;flex-direction:column;gap:16px;box-shadow:0 0 32px #4a3f8f66}.game-over-content h2{font-size:1.8rem;color:#a89cc8}.game-over-content p{color:#ffdd91;font-size:1.2rem}.restart-btn{padding:10px 24px;font-size:1rem;background:#4a3f8f;color:#fff;border:none;border-radius:8px;cursor:pointer;transition:background .2s}.restart-btn:hover{background:#6366f1}