.exam-container {
    max-width: 900px;
    margin: 0 auto;
}

.exam-header {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: calc(var(--header-height) + 16px);
    z-index: 50;
}

.exam-info {
    display: flex;
    align-items: center;
    gap: 24px;
}

.exam-title {
    font-size: 18px;
    font-weight: 600;
}

.exam-timer {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: 600;
    color: var(--primary);
    font-family: var(--font-mono);
}

.exam-timer.warning {
    color: var(--warning);
}

.exam-timer.danger {
    color: var(--danger);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.exam-progress-info {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 14px;
    color: var(--text-secondary);
}

.exam-progress-bar {
    width: 120px;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.exam-progress-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.exam-actions {
    display: flex;
    gap: 8px;
}

.question-nav {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
    gap: 8px;
    margin-bottom: 24px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.question-nav-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border: 2px solid transparent;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
}

.question-nav-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.question-nav-btn.current {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.question-nav-btn.answered {
    background: var(--primary-50);
    border-color: var(--primary-200);
    color: var(--primary);
}

.question-nav-btn.flagged {
    position: relative;
}

.question-nav-btn.flagged::after {
    content: '';
    position: absolute;
    top: 2px;
    right: 2px;
    width: 8px;
    height: 8px;
    background: var(--warning);
    border-radius: 50%;
}

.exam-question {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 32px;
    margin-bottom: 24px;
}

.exam-question-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.exam-question-number {
    font-size: 15px;
    font-weight: 600;
    color: var(--primary);
}

.exam-question-type {
    font-size: 13px;
    color: var(--text-muted);
}

.exam-question-score {
    font-size: 13px;
    color: var(--text-muted);
}

.flag-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
}

.flag-btn:hover {
    border-color: var(--warning);
    color: var(--warning);
}

.flag-btn.flagged {
    background: var(--warning-light);
    border-color: var(--warning);
    color: var(--warning);
}

.exam-question-text {
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 24px;
}

.exam-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.exam-option {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 16px;
    background: var(--bg-secondary);
    border: 2px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
}

.exam-option:hover {
    background: var(--primary-50);
    border-color: var(--primary-200);
}

.exam-option.selected {
    background: var(--primary-50);
    border-color: var(--primary);
}

.exam-option-letter {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    border: 2px solid var(--border);
    border-radius: 50%;
    font-size: 14px;
    font-weight: 600;
    flex-shrink: 0;
    transition: all var(--transition);
}

.exam-option.selected .exam-option-letter {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.exam-option-text {
    flex: 1;
    font-size: 14px;
    line-height: 1.6;
    padding-top: 4px;
}

.exam-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.exam-nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    background: var(--bg-secondary);
    border: none;
    border-radius: var(--radius);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
}

.exam-nav-btn:hover {
    background: var(--bg-tertiary);
}

.exam-nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.exam-submit-btn {
    background: var(--primary);
    color: white;
}

.exam-submit-btn:hover {
    background: var(--primary-dark);
}

.exam-result {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 40px;
    text-align: center;
}

.exam-result-score {
    font-size: 64px;
    font-weight: 700;
    color: var(--primary);
    margin: 16px 0;
}

.exam-result-label {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.exam-result-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 32px;
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.exam-result-stat {
    text-align: center;
}

.exam-result-stat-value {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 4px;
}

.exam-result-stat-label {
    font-size: 13px;
    color: var(--text-muted);
}

.exam-result-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.exam-answers {
    margin-top: 32px;
    text-align: left;
}

.exam-answer-item {
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 16px;
}

.exam-answer-item.correct {
    border-color: var(--success);
    background: var(--success-light);
}

.exam-answer-item.wrong {
    border-color: var(--danger);
    background: var(--danger-light);
}

.exam-answer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.exam-answer-number {
    font-weight: 600;
}

.exam-answer-result {
    font-size: 14px;
    font-weight: 500;
}

.exam-answer-text {
    font-size: 14px;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.exam-answer-correct {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
}

.exam-answer-explanation {
    font-size: 13px;
    color: var(--text-muted);
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.daily-container {
    max-width: 800px;
    margin: 0 auto;
}

.daily-header {
    text-align: center;
    padding: 40px 0;
}

.daily-date {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.daily-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 12px;
}

.daily-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
}

.daily-streak {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--warning-light);
    border-radius: var(--radius-xl);
    font-size: 14px;
    font-weight: 500;
    color: var(--warning);
    margin-top: 16px;
}

.daily-calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
    margin-bottom: 32px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.daily-calendar-header {
    display: contents;
}

.daily-calendar-day {
    text-align: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    padding: 8px;
}

.daily-calendar-date {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    border-radius: var(--radius);
    color: var(--text-secondary);
}

.daily-calendar-date.today {
    background: var(--primary);
    color: white;
    font-weight: 600;
}

.daily-calendar-date.completed {
    background: var(--success-light);
    color: var(--success);
}

.daily-calendar-date.missed {
    background: var(--danger-light);
    color: var(--danger);
}

.daily-questions {
    margin-top: 24px;
}

.daily-footer {
    text-align: center;
    padding: 32px;
    margin-top: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.daily-complete-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.daily-complete-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.daily-complete-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.daily-score {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.daily-score-label {
    font-size: 14px;
    color: var(--text-muted);
}

@media (max-width: 768px) {
    .exam-header {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
    }

    .exam-info {
        flex-wrap: wrap;
    }

    .question-nav {
        grid-template-columns: repeat(auto-fill, minmax(36px, 1fr));
    }

    .question-nav-btn {
        width: 36px;
        height: 36px;
        font-size: 12px;
    }

    .exam-question {
        padding: 20px;
    }

    .exam-result-stats {
        grid-template-columns: 1fr;
    }

    .daily-calendar {
        font-size: 12px;
    }
}