*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0f0f0f;--surface: #1a1a2e;--primary: #6c63ff;--text: #e0e0e0;--text-muted: #888;--border: #2a2a3e;--danger: #ff4d4d;--success: #4caf50;--tile-green: #00c853;--tile-red: #ff1744;--tile-yellow: #ffd600;--tile-blue: #2979ff}body{background-color:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Helvetica Neue,sans-serif;font-size:1rem;line-height:1.6;min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@keyframes pageFadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes shake{0%,to{transform:translate(0)}16.67%{transform:translate(4px)}33.33%{transform:translate(-4px)}50%{transform:translate(4px)}66.67%{transform:translate(-4px)}83.33%{transform:translate(4px)}}.page-transition{animation:pageFadeIn .25s ease-out}.navbar{position:fixed;top:0;left:0;width:100%;height:56px;display:flex;align-items:center;justify-content:center;background-color:var(--surface);border-bottom:1px solid var(--border);z-index:100}.navbar .brand{font-size:1.25rem;font-weight:700;color:var(--primary)}.start-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;z-index:10}.start-button{min-width:44px;min-height:44px;padding:14px 40px;background-color:var(--primary);color:#fff;font-size:1.25rem;font-weight:700;border:none;border-radius:8px;cursor:pointer;transition:opacity .15s ease}.start-button:hover{opacity:.9}.start-button:active{opacity:.8}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.game-over-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#0f0f0fd9;animation:fadeIn .2s ease-out forwards;z-index:50}.game-over-content{display:flex;flex-direction:column;align-items:center;gap:1rem;text-align:center}.game-over-title{font-size:2rem;font-weight:700;color:var(--danger)}.game-over-level{font-size:1.25rem;color:var(--text-muted)}.play-again-btn{min-width:44px;min-height:44px;padding:.75rem 2rem;font-size:1.1rem;font-weight:600;color:var(--text);background-color:var(--primary);border:none;border-radius:8px;cursor:pointer;transition:opacity .15s ease}.play-again-btn:hover{opacity:.85}.play-again-btn:active{opacity:.7}.game-board{display:grid;grid-template-columns:1fr 1fr;gap:6px;width:fit-content;margin:auto;touch-action:none;place-items:center}@keyframes scalePop{0%{transform:scale(1)}50%{transform:scale(1.2);text-shadow:0 0 8px var(--primary)}to{transform:scale(1);text-shadow:none}}.score-display{text-align:center;font-variant-numeric:tabular-nums;padding:.75rem 0}.score-display__level{font-size:1.5rem;font-weight:700;color:var(--text)}.score-display__level--pop{animation:scalePop .2s ease-out}.score-display__best{font-size:.9rem;color:var(--text-muted);margin-top:.25rem}.score-display__high-score{font-size:1.25rem;font-weight:600;color:var(--text)}.score-display__daily{display:flex;align-items:center;justify-content:center;gap:.5rem;margin-top:.5rem}.score-display__daily-text{font-size:.85rem;color:var(--text-muted)}.score-display__checkmark{color:var(--success);font-size:1.1rem;font-weight:700}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:0ms!important;animation-delay:0ms!important;transition-duration:0ms!important;transition-delay:0ms!important}}