.theme-tieu-hoc{background:linear-gradient(135deg,#e3f2fd 0%,#bbdefb 100%)}.theme-tieu-hoc .game-header h1{color:#1565c0}
.hint-area{text-align:center;padding:16px;margin-bottom:14px;background:#fff;border-radius:16px;box-shadow:0 2px 12px rgba(0,0,0,.06)}
.hint-emoji{font-size:3rem;margin-bottom:6px}.hint-text{font-size:1rem;font-weight:700;color:#555}
.answer-slots{display:flex;justify-content:center;gap:6px;margin-bottom:16px;flex-wrap:wrap}
.slot{width:42px;height:48px;border:3px dashed #bbb;border-radius:12px;display:flex;align-items:center;justify-content:center;font-family:'Baloo 2',cursive;font-size:1.5rem;font-weight:800;color:#1565c0;background:#f5f5f5;transition:all .15s}
.slot.filled{border-style:solid;border-color:#1565c0;background:#e3f2fd}
.letter-pool{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.pool-btn{width:48px;height:48px;border:3px solid #e0e0e0;border-radius:14px;background:#fff;font-family:'Baloo 2',cursive;font-size:1.5rem;font-weight:800;color:#333;cursor:pointer;transition:all .15s;box-shadow:0 3px 0 #e0e0e0;display:flex;align-items:center;justify-content:center}
.pool-btn:hover{transform:translateY(-2px);box-shadow:0 5px 0 #e0e0e0}.pool-btn.used{opacity:.3;pointer-events:none}
.btn-clear{display:block;margin:0 auto;padding:10px 24px;border:none;border-radius:12px;background:#ef5350;color:#fff;font-family:'Baloo 2',cursive;font-size:1rem;font-weight:700;cursor:pointer;box-shadow:0 3px 0 #c62828}
.btn-clear:hover{transform:translateY(-1px)}.correct-flash{animation:bounceIn .4s}.wrong-flash .slot{border-color:#f44336;background:#ffebee}
@keyframes bounceIn{0%{transform:scale(.8)}50%{transform:scale(1.15)}100%{transform:scale(1)}}