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#0000001a}.question-text{font-size:1.5rem;margin-bottom:2rem;color:var(--text);text-align:center}.audio-button{display:block;margin:0 auto 2rem;padding:.75rem 1.5rem;background:var(--secondary);color:#fff;border:none;border-radius:.5rem;font-weight:500;cursor:pointer;transition:background .2s}.audio-button:hover{background:#7c3aed}.options-grid{display:grid;gap:1rem;margin-bottom:2rem}.option-button{padding:1.25rem;background:var(--bg);border:2px solid var(--border);border-radius:.75rem;font-size:1rem;text-align:left;cursor:pointer;transition:all 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h1{font-size:2.5rem;margin-bottom:2rem;color:var(--text)}.score-display{margin-bottom:2rem}.score-circle{display:inline-flex;align-items:baseline;justify-content:center;font-size:3rem;font-weight:700;color:var(--primary);margin-bottom:.5rem}.score-number{font-size:4rem}.score-total{font-size:2rem;color:var(--text-light)}.score-percentage{font-size:1.2rem;color:var(--text-light)}.completion-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.completion-actions .action-button{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.5rem;border:none;border-radius:.75rem;font-size:1rem;font-weight:600;text-decoration:none;transition:all .2s}.completion-actions .action-button.primary{background:var(--primary);color:#fff}.completion-actions .action-button.primary:hover{background:var(--primary-dark);transform:translateY(-2px)}.completion-actions .action-button.secondary{background:var(--bg);color:var(--text);border:2px solid var(--border)}.completion-actions .action-button.secondary:hover{border-color:var(--primary)}.exercise-not-found{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem}.exercise-not-found a{color:var(--primary);text-decoration:none;font-weight:500}@media (max-width: 768px){.exercise-header{padding:1.5rem 1rem}.exercise-content{padding:0 1rem}.question-card{padding:1.5rem}.question-text{font-size:1.2rem}.completion-content{padding:2rem 1.5rem}.completion-content h1{font-size:2rem}.score-number{font-size:3rem}}.app-container{min-height:100vh;display:flex;flex-direction:column}*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #2563eb;--primary-dark: #1e40af;--secondary: #8b5cf6;--success: #10b981;--warning: #f59e0b;--error: #ef4444;--bg: #f8fafc;--card-bg: #ffffff;--text: #1e293b;--text-light: #64748b;--border: #e2e8f0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica 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