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6px;border-radius:4px;font-size:11px;font-weight:800;background:var(--primary-light);color:var(--primary);flex-shrink:0}.mc-preview-options{display:flex;flex-wrap:wrap;gap:6px}.mc-preview-option{padding:3px 8px;border-radius:6px;font-size:12px;font-weight:500;background:var(--border-light);color:var(--text-secondary)}.mc-preview-option.correct{background:var(--success-light);color:var(--success);font-weight:700}.math-container{padding-top:4px}.math-top-bar{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.math-streak{display:flex;align-items:center;gap:4px;font-size:18px;font-weight:800;color:var(--text);letter-spacing:-.02em}.math-streak-fire{font-size:20px}.math-explain-badge{text-align:center;margin-bottom:12px;padding:6px 14px;background:var(--warning-light);color:var(--warning);border-radius:var(--radius-full);font-size:13px;font-weight:800;text-transform:uppercase;letter-spacing:.04em;display:inline-block;width:100%}.math-level-cards{display:flex;flex-direction:column;gap:12px;margin-top:16px}.math-level-card{display:flex;align-items:center;gap:14px;padding:18px 16px;background:var(--surface);border:1.5px solid var(--border-light);border-radius:var(--radius-lg);cursor:pointer;transition:all .25s cubic-bezier(.4,0,.2,1);box-shadow:var(--shadow-sm);animation:fadeIn .35s ease both}.math-level-card:nth-child(2){animation-delay:.06s}.math-level-card:active{transform:scale(.98)}.math-level-icon{font-size:32px;flex-shrink:0}.math-level-info{flex:1;min-width:0}.math-level-title{font-size:16px;font-weight:800;letter-spacing:-.01em;margin-bottom:2px}.math-level-desc{font-size:13px;color:var(--text-secondary);font-weight:500}.math-question-card{background:var(--surface);border-radius:var(--radius-xl);padding:32px 24px;margin-bottom:24px;text-align:center;box-shadow:var(--shadow);border:2px solid var(--border-light);transition:all .3s ease}.math-question-card.math-correct{border-color:var(--success);animation:correctPulse .6s ease}.math-question-card.math-wrong{border-color:var(--error);animation:wrongShake .4s ease}.math-question-text{font-size:22px;font-weight:800;letter-spacing:-.02em;margin-bottom:20px;line-height:1.3;color:var(--text)}.math-answer-display{font-size:48px;font-weight:900;letter-spacing:-.03em;color:var(--primary);min-height:64px;display:flex;align-items:center;justify-content:center;transition:color .2s ease}.math-answer-display.math-answer-correct{color:var(--success)}.math-answer-display.math-answer-wrong{color:var(--error)}.math-answer-placeholder{color:var(--text-muted);opacity:.3}.math-correct-answer{color:var(--success);animation:slideUp .3s ease}.math-numpad{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;max-width:320px;margin:0 auto}.math-numpad-btn{padding:18px 8px;border-radius:var(--radius);border:2px solid var(--border);background:var(--surface);font-size:24px;font-weight:700;color:var(--text);cursor:pointer;transition:all .15s ease;user-select:none;-webkit-tap-highlight-color:transparent;-webkit-user-select:none}.math-numpad-btn:active:not(:disabled){transform:scale(.93);background:var(--primary-light);border-color:var(--primary)}.math-numpad-btn:disabled{opacity:.4;cursor:not-allowed}.math-numpad-delete{font-size:22px;color:var(--text-secondary)}.math-numpad-submit{background:var(--gradient-primary);color:#fff;border-color:transparent;font-size:16px;font-weight:800;box-shadow:var(--shadow-primary)}.math-numpad-submit:active:not(:disabled){transform:scale(.93)}.math-numpad-submit:disabled{background:var(--border);box-shadow:none;color:var(--text-muted);border-color:transparent}.math-breakdown{background:var(--error-light);border:1px solid rgba(244,63,94,.2);border-radius:var(--radius-lg);padding:16px 20px;margin-bottom:20px;animation:slideUp .3s ease}.math-breakdown-title{font-size:14px;font-weight:800;color:var(--error);margin-bottom:10px;text-transform:uppercase;letter-spacing:.04em}.math-breakdown-step{display:flex;justify-content:space-between;align-items:center;padding:6px 0;font-size:18px;font-weight:600;color:var(--text)}.math-breakdown-step+.math-breakdown-step{border-top:1px solid rgba(244,63,94,.1)}.math-breakdown-label{color:var(--text-secondary)}.math-breakdown-value{font-weight:800;color:var(--text)}.math-breakdown-total{margin-top:4px;padding-top:10px;border-top:2px solid rgba(244,63,94,.25)!important}.math-breakdown-total .math-breakdown-value{color:var(--success);font-size:22px}