:root{color-scheme:dark;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5;--bg: #0f0f1a;--surface: #1a1a2e;--surface2: #222240;--accent: #e94560;--accent2: #0f3460;--gold: #f5c518;--text: #eee;--text-dim: #888;--tile-bg: #16213e;--tile-flip: #1a1a2e;--matched-bg: #0a3d2a}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100vh;background:var(--bg);color:var(--text)}.app{min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:1rem;max-width:700px;margin:0 auto;position:relative}.header{width:100%;display:flex;justify-content:space-between;align-items:center;padding:.75rem 0;flex-wrap:wrap;gap:.75rem}.logo{display:flex;align-items:center;gap:.5rem}.logo-icon{font-size:1.75rem}.logo h1{font-size:1.4rem;font-weight:700;background:linear-gradient(135deg,var(--accent),#ff8a80);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.02em}.stats{display:flex;gap:1rem}.stat{display:flex;flex-direction:column;align-items:center;min-width:50px}.stat-label{font-size:.65rem;text-transform:uppercase;letter-spacing:.1em;color:var(--text-dim)}.stat-value{font-size:1.1rem;font-weight:700;font-variant-numeric:tabular-nums}.progress-bar{width:100%;height:4px;background:var(--surface);border-radius:2px;overflow:hidden;margin-bottom:.75rem}.progress-fill{height:100%;background:linear-gradient(90deg,var(--accent),#ff8a80);border-radius:2px;transition:width .4s ease}.combo-popup{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);font-size:2rem;font-weight:800;color:var(--gold);text-shadow:0 0 20px rgba(245,197,24,.6);animation:comboPop 1s ease forwards;z-index:100;pointer-events:none}@keyframes comboPop{0%{opacity:0;transform:translate(-50%,-50%) scale(.5)}20%{opacity:1;transform:translate(-50%,-50%) scale(1.3)}to{opacity:0;transform:translate(-50%,-60%) scale(1)}}.level-bar{display:flex;gap:.5rem;margin-bottom:1rem;flex-wrap:wrap;justify-content:center}.level-btn{background:var(--surface);border:1px solid rgba(255,255,255,.08);color:var(--text-dim);padding:.4rem .85rem;border-radius:.5rem;font-size:.8rem;cursor:pointer;transition:all .2s;display:flex;flex-direction:column;align-items:center;gap:.15rem;font-family:inherit}.level-btn:hover{background:var(--surface2);color:var(--text)}.level-btn.active{background:var(--accent2);border-color:var(--accent);color:var(--text)}.level-btn.restart{color:var(--accent);border-color:#e945604d}.level-btn.restart:hover{background:#e9456026}.best{font-size:.65rem;color:var(--gold)}.board{display:grid;gap:10px;padding:1rem;width:100%;justify-content:center}.tile{aspect-ratio:1;perspective:600px;cursor:pointer;background:none;border:none;padding:0;font-family:inherit}.tile:disabled{cursor:default}.tile-inner{position:relative;width:100%;height:100%;transition:transform .5s cubic-bezier(.4,0,.2,1);transform-style:preserve-3d}.tile.flipped .tile-inner{transform:rotateY(180deg)}.tile-front,.tile-back{position:absolute;top:0;right:0;bottom:0;left:0;backface-visibility:hidden;border-radius:.75rem;display:grid;place-items:center;border:2px solid rgba(255,255,255,.06)}.tile-front{background:linear-gradient(145deg,#1e2a4a,#16213e);box-shadow:0 4px 12px #0000004d,inset 0 1px #ffffff0d}.tile-front:hover{border-color:#e9456066;box-shadow:0 4px 16px #e9456026,inset 0 1px #ffffff0d}.tile-question{font-size:1.5rem;color:#fff3;font-weight:700}.tile-back{background:var(--tile-flip);transform:rotateY(180deg);border-color:#e945604d}.tile-symbol{font-size:2rem}.tile.matched .tile-inner{transform:rotateY(180deg)}.tile.matched .tile-back{background:var(--matched-bg);border-color:#4caf5066;box-shadow:0 0 12px #4caf5033}.tile.matched .tile-symbol{animation:matchBounce .5s ease}@keyframes matchBounce{0%{transform:scale(1)}30%{transform:scale(1.35)}60%{transform:scale(.9)}to{transform:scale(1)}}.win-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:grid;place-items:center;z-index:50;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.win-card{background:var(--surface);border:1px solid rgba(255,255,255,.1);border-radius:1.25rem;padding:2.5rem 2rem;text-align:center;max-width:340px;width:90%;animation:slideUp .4s ease}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.win-trophy{font-size:4rem;margin-bottom:.5rem;animation:trophySpin 1s ease}@keyframes trophySpin{0%{transform:rotate(-15deg) scale(.5);opacity:0}50%{transform:rotate(10deg) scale(1.1)}to{transform:rotate(0) scale(1);opacity:1}}.win-card h2{font-size:1.5rem;margin-bottom:1.25rem;background:linear-gradient(135deg,var(--gold),#ffcc02);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.win-stats{display:flex;justify-content:center;gap:2rem;margin-bottom:1.5rem}.win-stat{display:flex;flex-direction:column;align-items:center}.win-stat-label{font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;color:var(--text-dim)}.win-stat-value{font-size:1.5rem;font-weight:700}.new-record{width:100%;color:var(--gold);font-weight:700;font-size:.9rem;margin-top:.5rem;animation:recordPulse 1.5s ease infinite}@keyframes recordPulse{0%,to{opacity:1}50%{opacity:.6}}.win-actions{display:flex;gap:.75rem;justify-content:center}.btn{padding:.65rem 1.5rem;border-radius:.6rem;font-size:.9rem;font-weight:600;cursor:pointer;border:none;transition:all .2s;font-family:inherit}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:#d63a52;transform:translateY(-1px)}.btn-secondary{background:var(--surface2);color:var(--text);border:1px solid rgba(255,255,255,.1)}.btn-secondary:hover{background:#2d2d55;transform:translateY(-1px)}@media(max-width:500px){.header{justify-content:center}.tile-symbol{font-size:1.5rem}.tile-question{font-size:1.2rem}.board{gap:6px;padding:.5rem}.level-btn{padding:.3rem .6rem;font-size:.7rem}}