:root{--color-bg:#0a0a0a;--color-text:#fff;--color-accent:gold;--color-danger:#ff4d4d;--font-main:"Inter", system-ui, -apple-system, sans-serif}*{box-sizing:border-box;-webkit-user-select:none;user-select:none;margin:0;padding:0}body,html{background-color:var(--color-bg);width:100%;height:100%;color:var(--color-text);font-family:var(--font-main);overflow:hidden}#app{justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:relative}#gameCanvas{image-rendering:pixelated;image-rendering:crisp-edges;display:block}#ui-layer{pointer-events:none;flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:absolute;top:0;left:0}.screen{pointer-events:auto;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);text-align:center;z-index:10;background:#000000d9;flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%;padding:2rem;transition:opacity .3s;display:flex}.hidden{opacity:0;display:none!important}.header h1{letter-spacing:-2px;background:linear-gradient(#fff,#888);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin:1rem 0;font-size:4rem;font-weight:800}.header p{color:#aaa;margin-bottom:2rem;font-size:1.1rem}.main-icon{color:var(--color-accent);font-size:5rem}.stats-preview{margin-bottom:3rem}.stat{flex-direction:column;gap:.25rem;display:flex}.stat .label{color:#666;letter-spacing:2px;font-size:.8rem;font-weight:700}.stat span:not(.label){font-size:2rem;font-weight:800}button{color:#000;cursor:pointer;background:#fff;border:none;border-radius:4px;padding:1.25rem 3rem;font-size:1.2rem;font-weight:800;transition:transform .1s,background .2s}button:active{transform:scale(.95)}button:hover{background:var(--color-accent)}#hud{pointer-events:none;justify-content:space-between;align-items:flex-start;width:100%;padding:2rem;display:flex;position:absolute;top:0;left:0}.score-container{flex-direction:column;align-items:flex-start;display:flex}#score{font-size:3.5rem;font-weight:900;line-height:1}#combo-badge{background:var(--color-accent);color:#000;border-radius:20px;margin-top:.5rem;padding:.25rem .75rem;font-size:.9rem;font-weight:800}.height-info{text-align:right}#floor-count{color:#888;font-size:1.2rem;font-weight:700}#game-over-screen h2{color:var(--color-danger);margin-bottom:2rem;font-size:3rem}.final-stats{gap:4rem;margin-bottom:3rem;display:flex}#new-high-score{color:var(--color-accent);margin-bottom:1rem;font-weight:800;animation:1s infinite alternate pulse}@keyframes pulse{0%{transform:scale(1)}to{transform:scale(1.1)}}