.back-button-container[data-v-f370a829]{left:1rem;position:absolute;top:1rem;z-index:10}.back-button[data-v-f370a829]{align-items:center;background:linear-gradient(135deg,#3b82f6,#1d4ed8);border-radius:8px;box-shadow:0 2px 4px #3b82f633;color:#fff;display:inline-flex;font-size:.9rem;font-weight:500;gap:.5rem;padding:.75rem 1rem;text-decoration:none;transition:all .2s ease}.back-button[data-v-f370a829]:hover{background:linear-gradient(135deg,#1d4ed8,#1e40af);box-shadow:0 4px 8px #3b82f64d;transform:translateY(-1px)}.back-button[data-v-f370a829]:active{transform:translateY(0)}.back-arrow[data-v-f370a829]{font-size:1.1rem;font-weight:700}.quiz-container .quiz-exercise[data-v-f370a829]{margin:0 auto;max-width:600px;padding:2rem}@media(max-width:768px){.quiz-container .quiz-exercise[data-v-f370a829]{padding:1rem}}.quiz-container .progress-bar[data-v-f370a829]{margin-bottom:2rem}.quiz-container .progress-bar .progress-text[data-v-f370a829]{color:#666;font-weight:500;margin-bottom:.5rem;text-align:center}.quiz-container .progress-bar .progress-visual[data-v-f370a829]{background-color:#e0e0e0;border-radius:4px;height:8px;overflow:hidden}.quiz-container .progress-bar .progress-visual .progress-fill[data-v-f370a829]{background:linear-gradient(90deg,#4ade80,#22c55e);height:100%;transition:width .3s ease}.quiz-container .progress-bar .retry-indicator[data-v-f370a829]{text-align:center}.quiz-container .progress-bar .retry-indicator .retry-counter[data-v-f370a829]{background-color:#fef2f2;border-left:4px solid #dc2626;border-radius:6px;color:#dc2626;font-weight:500;padding:.5rem 1rem}.quiz-container .exercise-content[data-v-f370a829]{text-align:center}.quiz-container .exercise-content .instructions[data-v-f370a829]{color:#374151;font-size:1.2rem;margin-bottom:1.5rem}.quiz-container .exercise-content .question-display[data-v-f370a829]{background-color:#f8fafc;border-left:4px solid #3b82f6;border-radius:12px;color:#1f2937;font-size:2rem;font-weight:600;margin-bottom:2rem;padding:1.5rem}@media(max-width:768px){.quiz-container .exercise-content .question-display[data-v-f370a829]{font-size:1.5rem}}.quiz-container .exercise-content .input-section[data-v-f370a829]{margin-bottom:1.5rem}.quiz-container .exercise-content .input-section .answer-input[data-v-f370a829]{border:2px solid #d1d5db;border-radius:8px;font-size:1.1rem;max-width:400px;padding:1rem;text-align:center;transition:border-color .2s ease;width:100%}.quiz-container .exercise-content .input-section .answer-input[data-v-f370a829]:focus{border-color:#3b82f6;outline:none}.quiz-container .exercise-content .input-section .answer-input[data-v-f370a829]:disabled{background-color:#f3f4f6;cursor:not-allowed}.quiz-container .exercise-content .result-section[data-v-f370a829]{margin:1.5rem 0}.quiz-container .exercise-content .result-section .correct-result[data-v-f370a829]{background-color:#dcfce7;border-left:4px solid #16a34a;color:#16a34a}.quiz-container .exercise-content .result-section .correct-result[data-v-f370a829],.quiz-container .exercise-content .result-section .incorrect-result[data-v-f370a829]{border-radius:8px;font-size:1.1rem;font-weight:600;padding:1rem}.quiz-container .exercise-content .result-section .incorrect-result[data-v-f370a829]{background-color:#fef2f2;border-left:4px solid #dc2626;color:#dc2626}.quiz-container .exercise-content .result-section .answer-reveal[data-v-f370a829]{background-color:#f3e8ff;border-left:4px solid #7c3aed;border-radius:8px;color:#7c3aed;font-size:1.1rem;font-weight:500;margin-top:1rem;padding:1rem}.quiz-container .exercise-content .result-section .answer-reveal strong[data-v-f370a829]{display:block;font-size:1.2rem;margin-top:.5rem}.quiz-container .exercise-content .action-buttons[data-v-f370a829]{margin-top:2rem}.quiz-container .exercise-content .action-buttons button[data-v-f370a829]{min-width:140px}.quiz-container .quiz-start[data-v-f370a829]{margin:0 auto;max-width:500px;padding:3rem 2rem;text-align:center}.quiz-container .quiz-start h2[data-v-f370a829]{color:#1f2937;font-size:2rem;margin-bottom:1rem}.quiz-container .quiz-start p[data-v-f370a829]{color:#6b7280;font-size:1.1rem;line-height:1.6;margin-bottom:2rem}.quiz-container .quiz-start .set-selector[data-v-f370a829]{margin:2rem 0}.quiz-container .quiz-start .set-selector label[data-v-f370a829]{color:#374151;display:block;font-weight:600;margin-bottom:.5rem}.quiz-container .quiz-start .set-selector .set-select[data-v-f370a829]{background-color:#fff;border:2px solid #e5e7eb;border-radius:8px;color:#374151;cursor:pointer;font-size:1rem;padding:.75rem 1rem;transition:border-color .2s ease;width:100%}.quiz-container .quiz-start .set-selector .set-select[data-v-f370a829]:focus{border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f61a;outline:none}.quiz-container .quiz-start .set-selector .set-select[data-v-f370a829]:hover{border-color:#d1d5db}.quiz-container .quiz-start .set-selector .random-set-button[data-v-f370a829]{margin-top:1rem}.quiz-container .quiz-start .set-selector .random-set-button button[data-v-f370a829]{font-size:.9rem;min-width:auto;padding:.5rem 1rem}.quiz-container .quiz-completed[data-v-f370a829]{margin:0 auto;max-width:500px;padding:3rem 2rem;text-align:center}.quiz-container .quiz-completed h2[data-v-f370a829]{color:#16a34a;font-size:2.5rem}.quiz-container .quiz-completed .final-score[data-v-f370a829],.quiz-container .quiz-completed h2[data-v-f370a829]{margin-bottom:1rem}.quiz-container .quiz-completed .final-score[data-v-f370a829]{color:#374151;font-size:1.3rem;font-weight:500}.quiz-container .quiz-completed .result-message[data-v-f370a829]{color:#6b7280;font-size:1.1rem;margin-bottom:2rem;white-space:pre-line}.quiz-container .quiz-completed .completion-actions[data-v-f370a829]{display:flex;flex-wrap:wrap;gap:1rem;justify-content:center}.quiz-container .quiz-completed .completion-actions a[data-v-f370a829],.quiz-container .quiz-completed .completion-actions button[data-v-f370a829]{min-width:160px}