.math-quiz-container{font-family:'Noto Sans Sinhala','Iskoola Pota',sans-serif;max-width:100%;margin:30px 0;padding:0}.quiz-box{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border-radius:12px;padding:25px;box-shadow:0 4px 15px rgba(0,0,0,.1);color:#fff;text-align:center}.quiz-title{font-size:1.4em;margin:0 0 20px;font-weight:700;text-shadow:1px 1px 2px rgba(0,0,0,.2);line-height:1.4}.quiz-question{background:rgba(255,255,255,.2);padding:20px;border-radius:8px;margin-bottom:20px;font-size:1.8em;font-weight:700}.math-problem{display:inline-block;letter-spacing:2px}.quiz-input-area{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:15px;align-items:center}.answer-input{padding:12px 15px;border:none;border-radius:6px;font-size:1.1em;width:150px;text-align:center;font-family:inherit}.submit-btn{padding:12px 20px;background:#ff6b6b;color:#fff;border:none;border-radius:6px;font-size:1em;cursor:pointer;font-weight:700;transition:all .2s;font-family:inherit;display:flex;align-items:center;gap:8px}.submit-btn:hover{transform:translateY(-2px);background:#ff5252;box-shadow:0 4px 12px rgba(255,107,107,.4)}.btn-icon{font-size:1.2em;transition:transform .2s}.submit-btn:hover .btn-icon{transform:translateX(3px)}.error-message{background:rgba(255,0,0,.3);border:1px solid rgba(255,255,255,.5);padding:12px;border-radius:6px;margin-top:15px;display:flex;align-items:center;justify-content:center;gap:8px;animation:shake .5s}.error-icon{font-size:1.2em}.error-text{font-size:.95em}@keyframes shake{0%,100%{transform:translateX(0)}10%,30%,50%,70%,90%{transform:translateX(-5px)}20%,40%,60%,80%{transform:translateX(5px)}}.loading-spinner{text-align:center;padding:20px}.spinner{border:4px solid rgba(255,255,255,.3);border-top:4px solid #fff;border-radius:50%;width:40px;height:40px;animation:spin 1s linear infinite;margin:0 auto 10px}@keyframes spin{0%{transform:rotate(0deg)}100%{transform:rotate(360deg)}}.hidden{display:none !important}.result-message{background:rgba(255,255,255,.25);padding:15px;border-radius:8px;margin-top:15px;animation:fadeIn .5s}.success-text{margin:5px 0;font-size:1em;line-height:1.4}.winner-code-section{margin-top:20px;padding:20px;background:rgba(0,0,0,.2);border-radius:8px;animation:slideUp .5s}.code-display{background:#fff;color:#333;padding:20px;border-radius:6px;margin-bottom:15px;font-size:2.2em;font-weight:700;letter-spacing:4px;font-family:'Courier New',monospace;text-align:center}.winner-code{display:inline-block;padding:5px 10px}.copy-btn{padding:12px 25px;background:#4ecdc4;color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:1em;font-family:inherit;transition:background .3s;font-weight:700}.copy-btn:hover{background:#45b7b8}.copy-feedback{display:none;margin-left:10px;color:#4ecdc4;font-weight:700}@keyframes fadeIn{from{opacity:0}to{opacity:1}}@keyframes slideUp{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}@media (max-width:480px){.quiz-box{padding:20px}.quiz-title{font-size:1.2em}.quiz-question{font-size:1.5em}.answer-input{width:120px}.submit-btn{padding:10px 15px}}