/* 페이지 헤더 */
.page-header {
    background: linear-gradient(135deg, #002147, #003366);
    color: white;
    padding: 120px 0 80px;
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.breadcrumb-custom {
    background: transparent;
    padding: 0;
    margin: 0;
}

.breadcrumb-custom .breadcrumb-item a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.breadcrumb-custom .breadcrumb-item.active {
    color: #66ccff;
}

/* 제품 개요 */
.product-overview {
    background: white;
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    padding: 3rem;
    margin: -60px auto 4rem;
    position: relative;
    z-index: 2;
}

.overview-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: center;
}

.product-image-main {
    width: 100%;
    height: 400px;
    background: #f8f9fa;
    border: 2px dashed #dee2e6;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6c757d;
    font-size: 1.2rem;
}
.product-image-main img {
    width: 80%;
}

.product-info h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: #002147;
    margin-bottom: 1rem;
}

.product-subtitle {
    font-size: 1.3rem;
    color: #0066cc;
    margin-bottom: 2rem;
    font-weight: 500;
}

.key-features {
    list-style: none;
    padding: 0;
    margin-bottom: 2rem;
}

.key-features li {
    padding: 0.8rem 0;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    align-items: center;
    font-size: 1.1rem;
}

.key-features li::before {
    content: '✓';
    color: #0066cc;
    font-weight: bold;
    margin-right: 1rem;
    font-size: 1.3rem;
}

.key-features li:last-child {
    border-bottom: none;
}

/* 제품 상세 섹션 */
.product-detail-section {
    margin: 4rem 0;
}

.detail-card {
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    padding: 3rem;
    margin-bottom: 3rem;
}

.section-header {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #0066cc;
}

.section-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #0066cc, #004499);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1.5rem;
    color: white;
    font-size: 1.8rem;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: #002147;
    margin: 0;
}

/* 스펙 테이블 */
.spec-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1.5rem;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.spec-table th,
.spec-table td {
    padding: 1.2rem;
    text-align: left;
    border-bottom: 1px solid #e9ecef;
}

.spec-table th {
    background: linear-gradient(135deg, #0066cc, #004499);
    color: white;
    font-weight: 600;
    font-size: 1rem;
}

.spec-table tr:nth-child(even) {
    background: #f8f9fa;
}

.spec-table tr:hover {
    background: #e3f2fd;
}

.spec-table td {
    font-weight: 500;
}

/* 기능 설명 */
.function-description {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: 15px;
    padding: 2rem;
    margin: 2rem 0;
}

.function-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: #002147;
    margin-bottom: 1rem;
}

.function-content {
    color: #555;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.function-list {
    list-style: none;
    padding: 0;
}

.function-list li {
    padding: 0.5rem 0;
    display: flex;
    align-items: flex-start;
}

.function-list li::before {
    content: '▪';
    color: #0066cc;
    font-weight: bold;
    margin-right: 0.8rem;
    margin-top: 0.2rem;
    flex-shrink: 0;
}

/* 제품 갤러리 */
.product-gallery {
    margin: 3rem 0;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.gallery-item {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.gallery-image {
    /*width: 100%;*/
    height: 250px;
    background: #f8f9fa;
    border-bottom: 2px dashed #dee2e6;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6c757d;
    font-weight: 500;
}

.gallery-caption {
    padding: 1rem;
    text-align: center;
}

.gallery-title {
    font-weight: 600;
    color: #002147;
    margin-bottom: 0.5rem;
}

.gallery-description {
    color: #6c757d;
    font-size: 0.9rem;
}

/* 특징 하이라이트 */
.feature-highlight {
    background: linear-gradient(135deg, #e3f2fd, #f3e5f5);
    border-left: 5px solid #0066cc;
    border-radius: 0 15px 15px 0;
    padding: 2rem;
    margin: 2rem 0;
}

.highlight-header {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.highlight-icon {
    width: 40px;
    height: 40px;
    background: #0066cc;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    color: white;
    font-size: 1.2rem;
}

.highlight-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: #0066cc;
    margin: 0;
}

.highlight-content {
    color: #333;
    line-height: 1.6;
    font-size: 1.05rem;
}

/* 기술적 장점 */
.technical-advantages {
    background: #002147;
    color: white;
    border-radius: 20px;
    padding: 3rem;
    margin: 3rem 0;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.advantage-item {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
}

.advantage-icon {
    width: 70px;
    height: 70px;
    background: rgba(102, 204, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: #66ccff;
    font-size: 2rem;
}

.advantage-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #66ccff;
}

.advantage-description {
    line-height: 1.6;
    opacity: 0.9;
}

/* 관련 제품 */
.related-products {
    background: #f8f9fa;
    border-radius: 20px;
    padding: 3rem;
    margin: 3rem 0;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.related-item {
    background: white;
    border-radius: 15px;
    padding: 1.5rem;
    text-align: center;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.related-item:hover {
    transform: translateY(-5px);
    color: inherit;
    text-decoration: none;
}

.related-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #0066cc, #004499);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: white;
    font-size: 1.3rem;
}

.related-name {
    font-weight: 600;
    color: #002147;
    margin-bottom: 0.5rem;
}

.related-description {
    color: #6c757d;
    font-size: 0.9rem;
}

/* 소재별 특성 */
.material-card .material-body {
    padding: 10px;
}

/* 반응형 */
@media (max-width: 768px) {
    .page-header h1 {
        font-size: 2.2rem;
    }

    .product-overview {
        margin: -40px 1rem 2rem;
        padding: 2rem;
    }

    .overview-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .product-image-main {
        height: 250px;
    }

    .detail-card {
        padding: 2rem;
    }

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

    .section-icon {
        margin: 0 0 1rem 0;
    }

    .spec-table {
        font-size: 0.9rem;
    }

    .spec-table th,
    .spec-table td {
        padding: 0.8rem;
    }

    .advantages-grid,
    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .technical-advantages {
        padding: 2rem;
    }

    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}