/* ========================================
   수소수 × 황칠 시너지 효과 섹션 스타일
   ======================================== */

/* 배경 그라데이션 */
.bg-gradient {
    background: linear-gradient(135deg, #f5f7fa 0%, #e0f7fa 100%);
}

/* 시너지 요약 */
.synergy-summary {
    margin: 3rem 0;
}

.synergy-equation {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    padding: 2rem;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.synergy-item {
    flex: 1;
    min-width: 200px;
    text-align: center;
    padding: 1.5rem;
    border-radius: 15px;
    background: #f8f9fa;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.synergy-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.synergy-item i {
    margin-bottom: 1rem;
}

.synergy-item h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 1rem 0;
    color: #333;
}

.synergy-item p {
    font-size: 1rem;
    color: #666;
    margin-bottom: 1rem;
}

.synergy-plus,
.synergy-equals {
    font-size: 3rem;
    font-weight: 900;
    color: #7c4dff;
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    color: white;
}

.badge-blue {
    background: linear-gradient(135deg, #2196f3 0%, #1976d2 100%);
}

.badge-green {
    background: linear-gradient(135deg, #4caf50 0%, #388e3c 100%);
}

.badge-red {
    background: linear-gradient(135deg, #f44336 0%, #d32f2f 100%);
}

/* 질병 통계 */
.disease-analysis {
    margin: 4rem 0;
}

.disease-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin: 2rem 0;
}

.stat-card {
    flex: 1;
    min-width: 150px;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    border: 3px solid #e0e0e0;
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.stat-card.highlight {
    border-color: #ff9800;
    background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 100%);
}

.stat-card.success {
    border-color: #4caf50;
    background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
}

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    color: #7c4dff;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    color: #666;
    font-weight: 600;
}

.stat-arrow {
    font-size: 2rem;
    color: #7c4dff;
}

/* 질병 카테고리 */
.disease-categories {
    margin: 4rem 0;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.category-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border-top: 5px solid #7c4dff;
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.category-icon {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 1rem;
}

.category-card h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 0.5rem;
}

.category-count {
    font-size: 1rem;
    color: #7c4dff;
    font-weight: 600;
    margin-bottom: 1rem;
}

.category-card ul {
    list-style: none;
    padding: 0;
    margin: 1rem 0;
}

.category-card ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: #666;
}

.category-card ul li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: #7c4dff;
    font-weight: 900;
}

.synergy-effect {
    margin-top: 1rem;
    padding: 1rem;
    background: linear-gradient(135deg, #f3e5f5 0%, #e1bee7 100%);
    border-radius: 10px;
    font-size: 0.9rem;
    color: #4a148c;
}

.synergy-effect strong {
    color: #6a1b9a;
}

/* 메커니즘 비교 */
.mechanism-comparison {
    margin: 4rem 0;
}

.comparison-table-wrapper {
    overflow-x: auto;
    margin-top: 2rem;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.comparison-table thead {
    background: linear-gradient(135deg, #7c4dff 0%, #651fff 100%);
    color: white;
}

.comparison-table th,
.comparison-table td {
    padding: 1.5rem;
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

.comparison-table th {
    font-weight: 700;
    font-size: 1.1rem;
}

.comparison-table tbody tr:hover {
    background: #f5f5f5;
}

.comparison-table tbody tr:last-child td {
    border-bottom: none;
}

/* 하이드리온 소개 */
.hydrogen-intro {
    margin: 4rem 0;
}

.hydrogen-card {
    background: white;
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border: 3px solid #2196f3;
}

.hydrogen-header {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 3px solid #e3f2fd;
}

.hydrogen-logo {
    flex-shrink: 0;
}

.hydrogen-title h4 {
    font-size: 2rem;
    font-weight: 900;
    color: #1976d2;
    margin-bottom: 0.5rem;
}

.hydrogen-subtitle {
    font-size: 1.1rem;
    color: #666;
}

.hydrogen-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.feature-item i {
    font-size: 2rem;
    margin-top: 0.2rem;
}

.feature-item h5 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 0.3rem;
}

.feature-item p {
    font-size: 0.9rem;
    color: #666;
}

.hydrogen-models {
    margin: 2rem 0;
}

.hydrogen-models h5 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 1rem;
}

.model-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.model-card {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    padding: 1.5rem;
    border-radius: 15px;
    border: 2px solid #2196f3;
}

.model-card h6 {
    font-size: 1.2rem;
    font-weight: 700;
    color: #1976d2;
    margin-bottom: 1rem;
}

.model-card p {
    margin: 0.5rem 0;
    color: #555;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.model-card i {
    color: #2196f3;
}

.hydrogen-link {
    margin-top: 2rem;
    text-align: center;
}

.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.btn-primary {
    background: linear-gradient(135deg, #7c4dff 0%, #651fff 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(124, 77, 255, 0.3);
}

.btn-secondary {
    background: linear-gradient(135deg, #2196f3 0%, #1976d2 100%);
    color: white;
}

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(33, 150, 243, 0.3);
}

/* 프로토콜 테이블 */
.protocol-section {
    margin: 4rem 0;
}

.protocol-table-wrapper {
    overflow-x: auto;
    margin-top: 2rem;
}

.protocol-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.protocol-table thead {
    background: linear-gradient(135deg, #4caf50 0%, #388e3c 100%);
    color: white;
}

.protocol-table th,
.protocol-table td {
    padding: 1.2rem;
    text-align: center;
    border-bottom: 1px solid #e0e0e0;
}

.protocol-table th {
    font-weight: 700;
    font-size: 1.1rem;
}

.protocol-table tbody tr:hover {
    background: #f1f8e9;
}

.protocol-table .total-row {
    background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
    font-weight: 700;
}

.protocol-note {
    margin-top: 1rem;
    padding: 1rem;
    background: #fff3e0;
    border-left: 5px solid #ff9800;
    border-radius: 5px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.protocol-note i {
    color: #ff9800;
    font-size: 1.2rem;
}

/* CTA */
.synergy-cta {
    margin: 4rem 0;
    padding: 3rem;
    background: linear-gradient(135deg, #7c4dff 0%, #651fff 100%);
    border-radius: 20px;
    text-align: center;
    color: white;
    box-shadow: 0 15px 50px rgba(124, 77, 255, 0.3);
}

.synergy-cta h3 {
    font-size: 2rem;
    font-weight: 900;
    margin-bottom: 1rem;
}

.synergy-cta p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* 문서 링크 */
.synergy-doc-link {
    margin-top: 2rem;
    padding: 1.5rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    text-align: center;
}

.synergy-doc-link i {
    color: #7c4dff;
    margin-right: 0.5rem;
}

.synergy-doc-link a {
    color: #7c4dff;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.synergy-doc-link a:hover {
    color: #651fff;
    text-decoration: underline;
}

/* 서브섹션 타이틀 */
.subsection-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid #7c4dff;
    display: inline-block;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .synergy-equation {
        flex-direction: column;
        gap: 1rem;
    }

    .synergy-plus,
    .synergy-equals {
        transform: rotate(90deg);
    }

    .disease-stats {
        flex-direction: column;
    }

    .stat-arrow {
        transform: rotate(90deg);
    }

    .hydrogen-header {
        flex-direction: column;
        text-align: center;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
    }
}

/* 애니메이션 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.synergy-item,
.category-card,
.stat-card {
    animation: fadeInUp 0.6s ease-out;
}

.category-card:nth-child(1) { animation-delay: 0.1s; }
.category-card:nth-child(2) { animation-delay: 0.2s; }
.category-card:nth-child(3) { animation-delay: 0.3s; }
.category-card:nth-child(4) { animation-delay: 0.4s; }
.category-card:nth-child(5) { animation-delay: 0.5s; }
.category-card:nth-child(6) { animation-delay: 0.6s; }
.category-card:nth-child(7) { animation-delay: 0.7s; }
.category-card:nth-child(8) { animation-delay: 0.8s; }

/* ========================================
   수소수 × 황칠 안전 주의사항 스타일
   ======================================== */

.synergy-safety-notice {
    margin-top: 4rem;
    padding: 3rem;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border: 3px solid #ffc107;
}

.synergy-safety-notice h3 {
    font-size: 1.8rem;
    font-weight: 900;
    color: #856404;
    margin-bottom: 2rem;
    text-align: center;
    padding-bottom: 1rem;
    border-bottom: 3px solid #ffc107;
}

.safety-notice-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.notice-item {
    display: flex;
    gap: 1.5rem;
    padding: 2rem;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.notice-item:hover {
    transform: translateX(10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.notice-item.safe {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    border-left: 6px solid #28a745;
}

.notice-item.warning {
    background: linear-gradient(135deg, #fff3cd 0%, #ffe8a1 100%);
    border-left: 6px solid #ffc107;
}

.notice-item.danger {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    border-left: 6px solid #dc3545;
}

.notice-icon {
    font-size: 3rem;
    flex-shrink: 0;
    line-height: 1;
}

.notice-text h4 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
    color: #333;
}

.notice-text p {
    font-size: 1.05rem;
    line-height: 1.7;
    color: #555;
    margin-bottom: 0.5rem;
}

.notice-text .sub-text {
    font-size: 0.95rem;
    color: #666;
    font-style: italic;
}

.notice-text ul {
    list-style: none;
    padding: 0;
    margin: 1rem 0;
}

.notice-text ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: #555;
}

.notice-text ul li:before {
    content: "▪";
    position: absolute;
    left: 0;
    color: #dc3545;
    font-weight: 900;
    font-size: 1.2rem;
}

.notice-contact {
    margin-top: 2rem;
    padding: 2rem;
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    border-radius: 15px;
    border: 3px solid #2196f3;
}

.contact-header {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 1.3rem;
    font-weight: 700;
    color: #1976d2;
    margin-bottom: 1rem;
}

.contact-header i {
    font-size: 1.5rem;
}

.notice-contact p {
    font-size: 1.05rem;
    color: #555;
    margin-bottom: 1rem;
}

.contact-info {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin: 1.5rem 0;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    background: white;
    border: 2px solid #2196f3;
    border-radius: 50px;
    color: #1976d2;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.contact-link:hover {
    background: #2196f3;
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(33, 150, 243, 0.3);
}

.contact-link i {
    font-size: 1.1rem;
}

.contact-note {
    font-size: 0.95rem;
    color: #666;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    padding: 1rem;
    background: white;
    border-radius: 10px;
    border-left: 4px solid #2196f3;
}

.contact-note i {
    color: #2196f3;
    font-size: 1.2rem;
}

/* 반응형 디자인 - 안전 주의사항 */
@media (max-width: 768px) {
    .synergy-safety-notice {
        padding: 2rem 1.5rem;
    }

    .synergy-safety-notice h3 {
        font-size: 1.4rem;
    }

    .notice-item {
        flex-direction: column;
        gap: 1rem;
        padding: 1.5rem;
    }

    .notice-icon {
        font-size: 2.5rem;
        text-align: center;
    }

    .notice-text h4 {
        font-size: 1.1rem;
    }

    .notice-text p {
        font-size: 1rem;
    }

    .contact-info {
        flex-direction: column;
    }

    .contact-link {
        width: 100%;
        justify-content: center;
    }
}