:root{color-scheme:light;font-family:Fredoka,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.4}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);color:#2d3748}.app{min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:1.5rem 1rem 3rem}.header{text-align:center;margin-bottom:1.5rem}.header h1{font-size:2.4rem;font-weight:700;color:#fff;text-shadow:0 2px 8px rgba(0,0,0,.18);letter-spacing:-.02em}.header .subtitle{font-size:1rem;color:#ffffffd9;margin-top:.25rem}.tabs{display:flex;gap:.5rem;margin-bottom:1.5rem}.tab-btn{border:none;padding:.6rem 1.6rem;border-radius:2rem;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s;background:#fff3;color:#fff}.tab-btn:hover{background:#ffffff59}.tab-btn.active{background:#fff;color:#5a67d8;box-shadow:0 4px 14px #00000026}.letter-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(72px,1fr));gap:.75rem;max-width:640px;width:100%}.letter-card{aspect-ratio:1;border:none;border-radius:1rem;font-size:1.8rem;font-weight:700;cursor:pointer;transition:transform .15s,box-shadow .15s;color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px #0000001f;user-select:none;-webkit-user-select:none}.letter-card:hover{transform:scale(1.08);box-shadow:0 6px 20px #0003}.letter-card:active{transform:scale(.95)}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;align-items:center;justify-content:center;z-index:100;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.detail-card{background:#fff;border-radius:1.5rem;padding:2rem 2.5rem;text-align:center;max-width:340px;width:90%;box-shadow:0 20px 60px #0000004d;animation:popIn .25s ease;position:relative}@keyframes popIn{0%{transform:scale(.8);opacity:0}to{transform:scale(1);opacity:1}}.detail-card .close-btn{position:absolute;top:.75rem;right:1rem;background:none;border:none;font-size:1.6rem;cursor:pointer;color:#a0aec0;line-height:1}.detail-card .close-btn:hover{color:#4a5568}.detail-letter{font-size:6rem;font-weight:800;line-height:1;margin-bottom:.25rem}.detail-emoji{font-size:4rem;margin:.5rem 0}.detail-word{font-size:1.5rem;font-weight:600;color:#4a5568;margin-bottom:.5rem}.detail-sound{font-size:1rem;color:#718096;margin-bottom:1rem}.speak-btn{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:.7rem 1.8rem;border-radius:2rem;font-size:1.1rem;font-weight:600;cursor:pointer;transition:transform .15s}.speak-btn:hover{transform:scale(1.05)}.speak-btn:active{transform:scale(.95)}.game-area{max-width:500px;width:100%}.game-instructions{text-align:center;color:#ffffffe6;font-size:1.1rem;margin-bottom:1.25rem;font-weight:500}.game-score{text-align:center;color:#fff;font-size:1rem;margin-bottom:1rem;font-weight:600}.game-row{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.game-letter-btn,.game-emoji-btn{border:3px solid rgba(255,255,255,.4);border-radius:1rem;padding:1rem;min-width:90px;min-height:90px;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;transition:all .2s;font-weight:700;background:#ffffff26;color:#fff;user-select:none;-webkit-user-select:none}.game-letter-btn{font-size:2rem}.game-emoji-btn{font-size:2.4rem}.game-letter-btn:hover,.game-emoji-btn:hover{transform:scale(1.08);background:#ffffff4d}.game-letter-btn.selected{background:#fff;color:#5a67d8;border-color:#fff;box-shadow:0 4px 14px #0003}.game-emoji-btn.selected{background:#fff;border-color:#fff;box-shadow:0 4px 14px #0003}.game-letter-btn.matched,.game-emoji-btn.matched{background:#48bb784d;border-color:#48bb78;opacity:.6;pointer-events:none}.game-letter-btn.wrong,.game-emoji-btn.wrong{animation:shake .4s ease;border-color:#fc8181}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-6px)}75%{transform:translate(6px)}}.game-btn{display:block;margin:1.5rem auto 0;background:#fff;color:#5a67d8;border:none;padding:.7rem 2rem;border-radius:2rem;font-size:1.1rem;font-weight:700;cursor:pointer;transition:transform .15s;box-shadow:0 4px 14px #00000026}.game-btn:hover{transform:scale(1.05)}.game-complete{text-align:center;color:#fff;padding:2rem}.game-complete h2{font-size:2rem;margin-bottom:.5rem}.game-complete p{font-size:1.2rem;color:#ffffffd9;margin-bottom:1.5rem}.confetti-piece{position:fixed;width:10px;height:10px;border-radius:2px;z-index:200;pointer-events:none;animation:confettiFall 1.5s ease-out forwards}@keyframes confettiFall{0%{opacity:1;transform:translateY(0) rotate(0)}to{opacity:0;transform:translateY(100vh) rotate(720deg)}}