*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);height:100vh;color:#333;overflow:hidden}.container{max-width:800px;margin:0 auto;padding:15px;height:100vh;display:flex;flex-direction:column;overflow:hidden}.game-header{text-align:center;margin-bottom:20px;background:#fffffff2;padding:15px;border-radius:12px;box-shadow:0 4px 16px #0000001a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);flex-shrink:0}.game-header h1{font-size:1.8rem;margin-bottom:12px;background:linear-gradient(45deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.stats{display:flex;justify-content:center;gap:30px;margin-bottom:12px}.stat-item{display:flex;flex-direction:column;align-items:center}.stat-label{font-size:.8rem;color:#666;margin-bottom:3px}.stat-value{font-size:1.2rem;font-weight:700;color:#333}.stat-total{color:#999;font-size:.9rem}.reset-btn{background:linear-gradient(45deg,#667eea,#764ba2);color:#fff;border:none;padding:8px 16px;border-radius:20px;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 2px 8px #667eea4d}.reset-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px #667eea66}.game-board{flex:1;display:flex;justify-content:center;align-items:center;overflow:hidden}.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;max-width:450px;width:100%;max-height:100%}.card{aspect-ratio:1;perspective:1000px;cursor:pointer}.card-inner{position:relative;width:100%;height:100%;text-align:center;transition:transform .6s;transform-style:preserve-3d}.card.flipped .card-inner,.card.matched .card-inner{transform:rotateY(180deg)}.card.matched{cursor:default}.card-front,.card-back{position:absolute;width:100%;height:100%;backface-visibility:hidden;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:5rem;box-shadow:0 3px 10px #0000001a;transition:all .3s ease}.card-front{background:linear-gradient(135deg,#f093fb,#f5576c);color:#fff;font-weight:700;font-size:1rem}.card-back{background:linear-gradient(135deg,#4facfe,#00f2fe);transform:rotateY(180deg);color:#fff;font-size:5rem}.card:hover:not(.flipped):not(.matched) .card-front{transform:scale(1.05);box-shadow:0 4px 15px #00000026}.card.matched .card-back{background:linear-gradient(135deg,#a8edea,#fed6e3);animation:matchPulse .6s ease-in-out}@keyframes matchPulse{0%,to{transform:rotateY(180deg) scale(1)}50%{transform:rotateY(180deg) scale(1.1)}}.modal{position:fixed;top:0;left:0;width:100%;height:100%;background:#000c;display:flex;justify-content:center;align-items:center;z-index:1000}.modal.hidden{display:none}.modal-content{background:#fff;padding:30px;border-radius:16px;text-align:center;box-shadow:0 15px 40px #0000004d;animation:modalSlideIn .5s ease-out;max-width:90vw;max-height:90vh;overflow-y:auto}@keyframes modalSlideIn{0%{opacity:0;transform:translateY(-50px) scale(.9)}to{opacity:1;transform:translateY(0) scale(1)}}.modal-content h2{font-size:1.8rem;margin-bottom:20px;background:linear-gradient(45deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.modal-content p{font-size:1.1rem;margin-bottom:20px;color:#666}.play-again-btn{background:linear-gradient(45deg,#667eea,#764ba2);color:#fff;border:none;padding:12px 24px;border-radius:20px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 3px 10px #667eea4d}.play-again-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px #667eea66}.theme-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:15px;margin-top:20px}.theme-btn{background:linear-gradient(135deg,#f093fb,#f5576c);color:#fff;border:none;padding:15px;border-radius:12px;cursor:pointer;transition:all .3s ease;display:flex;flex-direction:column;align-items:center;gap:8px;box-shadow:0 4px 12px #f093fb4d}.theme-btn:hover{transform:translateY(-2px);box-shadow:0 6px 16px #f093fb66}.theme-emoji{font-size:2rem}.theme-name{font-size:.9rem;font-weight:600}@media (max-width: 600px){.container{padding:10px}.game-header{padding:12px;margin-bottom:15px}.game-header h1{font-size:1.5rem;margin-bottom:8px}.stats{gap:20px;margin-bottom:8px}.stat-label{font-size:.7rem}.stat-value{font-size:1rem}.card-grid{gap:8px;max-width:320px}.card-front{font-size:.8rem}.card-back{font-size:3.5rem}.theme-options{grid-template-columns:repeat(2,1fr);gap:10px}.theme-btn{padding:12px}.theme-emoji{font-size:1.5rem}.theme-name{font-size:.8rem}}