/* ===========================
   Product Detail Page Styles
   =========================== */

/* Product Hero */
.product-hero {
    padding: 120px 0 40px;
    background: var(--bg-light);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-light);
}

.breadcrumb a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--primary-color);
}

.breadcrumb i {
    font-size: 10px;
}

.breadcrumb span {
    color: var(--text-dark);
    font-weight: 600;
}

/* Product Detail */
.product-detail {
    padding: 60px 0;
}

.product-detail-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

/* Product Gallery */
.product-gallery {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.main-image {
    width: 100%;
    aspect-ratio: 1;
    background: var(--white);
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow-md);
    margin-bottom: 20px;
    overflow: hidden;
}

.product-image-wrapper {
    width: 100%;
    height: 100%;
    position: relative;
}

.product-main-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 15px;
    display: none;
}

.product-main-img.loaded {
    display: block;
}

.main-image .image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    border-radius: 15px;
}

.main-image i {
    font-size: 120px;
    color: var(--white);
}

.product-brand-badge {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 25px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: var(--shadow-md);
}

.product-brand-badge .brand-logo {
    height: 40px;
    width: auto;
    filter: brightness(0) invert(1);
}

.product-brand-badge .brand-text {
    color: var(--white);
    font-size: 16px;
    font-weight: 600;
    margin: 0;
}

/* Product Info */
.product-detail-info {
    padding-top: 20px;
}

.product-category {
    display: inline-block;
    padding: 8px 20px;
    background: var(--gradient-2);
    color: var(--white);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.product-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.product-subtitle {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 25px;
    line-height: 1.6;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid #e0e0e0;
}

.stars {
    display: flex;
    gap: 5px;
}

.stars i {
    color: #ffc107;
    font-size: 18px;
}

.rating-text {
    color: var(--text-light);
    font-size: 14px;
}

/* Product Specs */
.product-specs {
    background: var(--bg-light);
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 30px;
}

.product-specs h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.product-specs ul {
    list-style: none;
}

.product-specs li {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid #e0e0e0;
}

.product-specs li:last-child {
    border-bottom: none;
}

.spec-label {
    color: var(--text-light);
    font-weight: 500;
}

.spec-value {
    color: var(--text-dark);
    font-weight: 600;
}

/* Features Box */
.product-features-box {
    margin-bottom: 40px;
}

.product-features-box h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.feature-box {
    background: var(--white);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.feature-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.feature-box i {
    font-size: 32px;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
}

.feature-box h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.feature-box p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.5;
}

/* Product Actions */
.product-actions {
    display: flex;
    gap: 15px;
    margin-top: 40px;
}

.btn-large {
    padding: 18px 40px;
    font-size: 16px;
    flex: 1;
}

/* Product Tabs */
.product-tabs {
    padding: 80px 0;
    background: var(--bg-light);
}

.tabs-header {
    display: flex;
    gap: 10px;
    margin-bottom: 40px;
    border-bottom: 2px solid #e0e0e0;
    overflow-x: auto;
}

.tab-btn {
    padding: 15px 30px;
    background: transparent;
    border: none;
    font-size: 16px;
    font-weight: 500;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    white-space: nowrap;
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-2);
    transition: var(--transition);
}

.tab-btn.active {
    color: var(--primary-color);
    font-weight: 600;
}

.tab-btn.active::after {
    width: 100%;
}

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

.tabs-content {
    background: var(--white);
    padding: 50px;
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tab-panel h2 {
    font-size: 28px;
    margin-bottom: 25px;
    color: var(--text-dark);
}

.tab-panel h3 {
    font-size: 22px;
    margin: 30px 0 15px;
    color: var(--text-dark);
}

.tab-panel p {
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 15px;
}

.tab-panel ul {
    margin-left: 20px;
    margin-bottom: 20px;
}

.tab-panel ul li {
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 10px;
}

/* Specs Table */
.specs-table {
    margin-top: 30px;
}

.specs-table table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table th,
.specs-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

.specs-table th {
    background: var(--bg-light);
    font-weight: 600;
    color: var(--text-dark);
}

.specs-table td {
    color: var(--text-light);
}

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

/* Applications Grid */
.applications-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 30px;
}

.application-card {
    background: var(--bg-light);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
}

.application-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.application-card i {
    font-size: 48px;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
}

.application-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.application-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

/* Applications List */
.applications-list {
    list-style: none;
    padding: 0;
    margin-top: 30px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.applications-list li {
    display: flex;
    align-items: center;
    padding: 15px;
    background: var(--bg-light);
    border-radius: 10px;
    font-size: 16px;
    color: var(--text-dark);
    transition: var(--transition);
}

.applications-list li:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    transform: translateX(5px);
}

.applications-list li i {
    margin-right: 12px;
    color: var(--primary-color);
    font-size: 18px;
}

.applications-list li:hover i {
    color: white;
}

/* Certifications */
.certifications-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin: 30px 0;
}

.cert-card {
    background: var(--bg-light);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
}

.cert-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.cert-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.cert-icon i {
    font-size: 36px;
    color: var(--white);
}

.cert-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.cert-card p {
    font-size: 14px;
    color: var(--text-light);
}

.quality-info {
    background: var(--bg-light);
    padding: 30px;
    border-radius: 15px;
    margin-top: 30px;
}

.quality-info h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.quality-info ul {
    margin-left: 20px;
}

.quality-info li {
    line-height: 2;
    color: var(--text-light);
}

/* Related Products */
.related-products {
    padding: 80px 0;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.products-grid .product-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.products-grid .product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

/* Inquiry Section */
.inquiry-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.inquiry-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    background: var(--white);
    padding: 60px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.inquiry-info h2 {
    font-size: 36px;
    margin-bottom: 20px;
    font-weight: 700;
}

.inquiry-info p {
    color: var(--text-light);
    margin-bottom: 40px;
    line-height: 1.7;
}

.inquiry-benefits {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: var(--bg-light);
    border-radius: 12px;
}

.benefit-item i {
    width: 50px;
    height: 50px;
    background: var(--gradient-2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 20px;
    flex-shrink: 0;
}

.benefit-item span {
    font-weight: 500;
    color: var(--text-dark);
}

.inquiry-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-dark);
}

/* Responsive */
@media (max-width: 1024px) {
    .product-detail-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .product-gallery {
        position: relative;
        top: 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .applications-grid,
    .certifications-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .applications-list {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .inquiry-wrapper {
        grid-template-columns: 1fr;
        padding: 40px;
    }
}

@media (max-width: 768px) {
    /* 컨테이너 여백 */
    .container {
        padding: 0 24px;
    }
    
    /* 히어로 섹션 */
    .product-hero {
        padding: 100px 0 40px;
    }
    
    .product-title {
        font-size: 32px;
        line-height: 1.3;
        margin-bottom: 16px;
    }
    
    .product-category {
        font-size: 15px;
        padding: 8px 18px;
    }
    
    .product-subtitle {
        font-size: 17px;
        line-height: 1.6;
    }
    
    .product-price {
        font-size: 32px;
    }
    
    /* 버튼 터치 영역 확대 */
    .product-actions {
        flex-direction: column;
        gap: 12px;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        min-height: 52px;
        font-size: 16px;
        padding: 15px 32px;
    }
    
    /* 탭 버튼 */
    .tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        gap: 8px;
        padding-bottom: 10px;
        -webkit-overflow-scrolling: touch;
    }
    
    .tab-btn {
        padding: 12px 24px;
        min-height: 48px;
        font-size: 15px;
        white-space: nowrap;
        flex-shrink: 0;
    }
    
    /* 탭 컨텐츠 */
    .tabs-content {
        padding: 30px 20px;
    }
    
    /* 스펙 테이블 */
    .specs-table {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        display: block;
    }
    
    .specs-table table {
        min-width: 500px; /* 가로 스크롤 허용 */
    }
    
    .specs-table td,
    .specs-table th {
        font-size: 14px;
        padding: 14px 12px;
    }
    
    /* 특징 카드 */
    .feature-card {
        padding: 24px 20px;
    }
    
    .feature-card i {
        width: 50px;
        height: 50px;
        font-size: 22px;
    }
    
    .feature-card h4 {
        font-size: 17px;
    }
    
    .feature-card p {
        font-size: 14px;
        line-height: 1.6;
    }
    
    /* 애플리케이션 & 인증 그리드 */
    .applications-grid,
    .certifications-grid,
    .products-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .application-card,
    .cert-card {
        padding: 24px 20px;
    }
    
    .application-card i,
    .cert-card i {
        width: 50px;
        height: 50px;
        font-size: 22px;
    }
    
    .application-card h4,
    .cert-card h4 {
        font-size: 17px;
    }
    
    /* 문의 폼 */
    .inquiry-wrapper {
        padding: 30px 24px;
        gap: 40px;
    }
    
    .inquiry-info h2 {
        font-size: 28px;
        line-height: 1.3;
    }
    
    .inquiry-info p {
        font-size: 15px;
        line-height: 1.7;
    }
    
    .benefit-item {
        padding: 16px;
    }
    
    .benefit-item i {
        width: 44px;
        height: 44px;
        font-size: 18px;
    }
    
    .benefit-item span {
        font-size: 14px;
    }
    
    /* 폼 입력 필드 - iOS 자동 확대 방지 */
    .inquiry-form input[type="text"],
    .inquiry-form input[type="email"],
    .inquiry-form input[type="tel"],
    .inquiry-form input[type="number"],
    .inquiry-form textarea {
        font-size: 16px; /* 16px 이상 필수 */
        min-height: 52px;
        padding: 14px 16px;
    }
    
    .inquiry-form textarea {
        min-height: 140px;
    }
    
    .inquiry-form label {
        font-size: 15px;
        margin-bottom: 10px;
    }
    
    /* 체크박스 */
    .form-check input[type="checkbox"] {
        width: 22px;
        height: 22px;
        min-width: 22px;
    }
    
    .form-check label {
        font-size: 14px;
        line-height: 1.6;
    }
    
    /* 제출 버튼 */
    .btn-block {
        min-height: 52px;
        font-size: 16px;
        padding: 15px;
    }
}

@media (max-width: 480px) {
    /* 작은 모바일 최적화 */
    .container {
        padding: 0 20px;
    }
    
    .product-title {
        font-size: 28px;
    }
    
    .product-subtitle {
        font-size: 15px;
    }
    
    .product-price {
        font-size: 28px;
    }
    
    .product-category {
        font-size: 14px;
        padding: 6px 14px;
    }
    
    /* 버튼 */
    .btn-primary,
    .btn-secondary {
        min-height: 50px;
        font-size: 15px;
        padding: 14px 28px;
    }
    
    /* 탭 */
    .tab-btn {
        padding: 12px 20px;
        min-height: 46px;
        font-size: 14px;
    }
    
    .tabs-content {
        padding: 24px 16px;
    }
    
    /* 특징 카드 */
    .feature-card {
        padding: 20px 16px;
    }
    
    .feature-card h4 {
        font-size: 16px;
    }
    
    .feature-card p {
        font-size: 13px;
    }
    
    /* 문의 섹션 */
    .inquiry-wrapper {
        padding: 24px 20px;
    }
    
    .inquiry-info h2 {
        font-size: 24px;
    }
    
    .inquiry-info p {
        font-size: 14px;
    }
    
    .benefit-item {
        padding: 14px;
    }
    
    .benefit-item span {
        font-size: 13px;
    }
    
    /* 폼 */
    .inquiry-form input[type="text"],
    .inquiry-form input[type="email"],
    .inquiry-form input[type="tel"],
    .inquiry-form input[type="number"],
    .inquiry-form textarea {
        font-size: 16px; /* 16px 유지 */
        min-height: 50px;
    }
    
    .inquiry-form label {
        font-size: 14px;
    }
    
    .btn-block {
        min-height: 50px;
        font-size: 15px;
    }
}