/* 고졸 검정고시 PDF 페이지 - 그린 테마 */
:root {
    --ged-primary: #22c55e;
    --ged-primary-dark: #16a34a;
    --ged-primary-light: #4ade80;
    --ged-gradient: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    --ged-gradient-light: linear-gradient(135deg, rgba(34, 197, 94, 0.1) 0%, rgba(22, 163, 74, 0.1) 100%);
    --ged-text-dark: #14532d;
}

/* page-header는 cert-list.css의 기본 스타일 사용 */

.page-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.page-stats .stat {
    text-align: center;
}

.page-stats .stat-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--ged-primary);
}

.page-stats .stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Section Styles */
.exam-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

/* Year Tabs */
.year-tabs {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
    border-bottom: 2px solid var(--border-color);
}

.year-tab {
    padding: var(--space-md) var(--space-xl);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    top: 2px;
}

.year-tab:hover {
    color: var(--ged-primary);
}

.year-tab.active {
    color: var(--ged-primary);
    border-bottom-color: var(--ged-primary);
}

/* Exam Tabs */
.exam-tabs {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
    border-bottom: 2px solid var(--border-color);
}

.exam-tab {
    padding: var(--space-md) var(--space-xl);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    top: 2px;
}

.exam-tab:hover {
    color: var(--ged-primary);
}

.exam-tab.active {
    color: var(--ged-primary);
    border-bottom-color: var(--ged-primary);
}

.exam-content {
    display: none;
}

.exam-content.active {
    display: block;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-header.elective-header {
    margin-top: var(--space-2xl);
    padding-top: var(--space-xl);
    border-top: 2px dashed var(--border-color);
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.section-desc {
    color: var(--text-secondary);
}

/* Subject Grid */
.subject-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.subject-grid.required-subjects {
    margin-bottom: var(--space-xl);
}

.subject-grid.elective-subjects {
    margin-bottom: var(--space-xl);
}

/* Exam Card */
.exam-card {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.exam-card:hover {
    border-color: var(--ged-primary);
    box-shadow: 0 8px 25px rgba(34, 197, 94, 0.15);
    transform: translateY(-3px);
}

.exam-card-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.exam-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.exam-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    flex: 1;
}

.subject-badge {
    font-size: 0.7rem;
    padding: 2px 8px;
    background: #fef3c7;
    color: #92400e;
    border-radius: var(--radius-full);
    font-weight: 600;
}

.exam-card-body {
    flex: 1;
    margin-bottom: var(--space-lg);
}

.exam-desc {
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    font-size: 0.9rem;
}

.exam-meta {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.meta-item {
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.exam-card-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.action-btn {
    flex: 1;
    min-width: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border: 2px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    font-size: 0.9rem;
}

.action-btn:hover {
    border-color: var(--ged-primary);
    color: var(--ged-primary);
    transform: translateY(-2px);
}

.action-btn.view-pdf {
    background: var(--ged-gradient);
    border-color: transparent;
    color: white;
}

.action-btn.view-pdf:hover {
    background: var(--ged-primary-dark);
    color: white;
}

.action-btn.download {
    border-color: var(--ged-primary);
    color: var(--ged-primary);
}

.action-btn.download:hover {
    background: var(--ged-primary);
    color: white;
}

.btn-icon {
    font-size: 1.1rem;
}

/* Answer Card */
.answer-card {
    background: linear-gradient(135deg, var(--ged-gradient-light) 0%, white 100%);
    border: 2px solid var(--ged-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-top: var(--space-xl);
}

.answer-card-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.answer-icon {
    font-size: 2rem;
}

.answer-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.answer-card-body {
    margin-bottom: var(--space-lg);
}

.answer-desc {
    color: var(--text-secondary);
}

.answer-card-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

/* PDF Modal */
.pdf-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.pdf-modal.active {
    display: flex;
}

.pdf-modal-content {
    width: 90%;
    max-width: 1200px;
    height: 90%;
    background: white;
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.pdf-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
    background: var(--ged-gradient);
    color: white;
}

.pdf-modal-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
}

.pdf-modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

.pdf-modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

.pdf-modal-body {
    flex: 1;
    overflow: hidden;
}

#pdf-frame {
    width: 100%;
    height: 100%;
    border: none;
}

/* Article Section */
.article-section {
    margin-bottom: var(--space-2xl);
}

.article-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* Info Card Grid */
.info-card-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.info-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    transition: all 0.3s ease;
}

.info-card:hover {
    border-color: var(--ged-primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(34, 197, 94, 0.15);
}

.info-card .info-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
    display: block;
}

.info-card .info-label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.info-card .info-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.5;
}

/* Subject Table */
.subject-table {
    width: 100%;
    border-collapse: collapse;
}

.subject-table th,
.subject-table td {
    padding: var(--space-md) var(--space-lg);
    border: 1px solid var(--border-color);
    text-align: left;
}

.subject-table th {
    background: var(--ged-gradient-light);
    font-weight: 600;
    color: var(--text-primary);
}

.subject-table td {
    color: var(--text-secondary);
}

.subject-table tr:hover td {
    background: rgba(34, 197, 94, 0.05);
}

.subject-table .category-cell {
    background: var(--ged-gradient-light);
    font-weight: 600;
    color: var(--ged-text-dark);
    text-align: center;
    vertical-align: middle;
}

.subject-table .category-cell.elective {
    background: #fef3c7;
    color: #92400e;
}

/* FAQ Section */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.faq-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: var(--ged-primary);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.faq-question:hover {
    color: var(--ged-primary);
}

.faq-icon {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--ged-primary);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--space-lg) var(--space-lg);
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Related Content */
.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.related-card {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all 0.3s ease;
}

.related-card:hover {
    border-color: var(--ged-primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(34, 197, 94, 0.15);
}

.related-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.related-info h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.related-info p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Container and Grid Alignment */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    width: 100%;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .info-card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .subject-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .year-tabs,
    .exam-tabs {
        flex-wrap: wrap;
        gap: var(--space-sm);
    }
    
    .year-tab,
    .exam-tab {
        padding: var(--space-sm) var(--space-lg);
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .page-header {
        padding: var(--space-xl);
    }

    .page-stats {
        gap: var(--space-lg);
        flex-wrap: wrap;
    }

    .exam-section {
        padding: var(--space-lg);
    }
    
    .year-tabs,
    .exam-tabs {
        gap: var(--space-xs);
    }
    
    .year-tab,
    .exam-tab {
        padding: var(--space-sm) var(--space-md);
        font-size: 0.875rem;
        flex: 1;
        min-width: 0;
    }

    .subject-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .info-card-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }

    .info-card {
        padding: var(--space-lg);
    }

    .related-grid {
        grid-template-columns: 1fr;
    }
    
    .subject-table {
        font-size: 0.9rem;
    }
    
    .subject-table th,
    .subject-table td {
        padding: var(--space-sm);
    }

    .pdf-modal-content {
        width: 95%;
        height: 95%;
    }
}

@media (max-width: 480px) {
    .page-title {
        font-size: 1.5rem;
    }

    .action-btn {
        min-width: 100%;
    }

    .exam-card-actions {
        flex-direction: column;
    }

    .info-card-grid {
        gap: var(--space-sm);
    }

    .info-card {
        padding: var(--space-md);
    }

    .info-card .info-icon {
        font-size: 1.5rem;
        margin-bottom: var(--space-sm);
    }
}

/* Loading and Error States */
.loading-state,
.error-state,
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--space-3xl);
    color: var(--text-secondary);
}

.loading-state {
    font-size: 1.1rem;
}

.error-icon,
.empty-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    display: block;
}

.error-message,
.empty-message {
    font-size: 1rem;
    line-height: 1.6;
}

/* SEO 컨텐츠 - 화면에 표시되지 않지만 검색엔진은 읽을 수 있도록 */
.seo-content {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
}