/* ==========================================================================
   Enhanced Product Detail Page Styles
   Modern, responsive, and accessible design for product pages
   ========================================================================== */

/* ==========================================================================
   CSS Custom Properties (Enhanced Variables)
   ========================================================================== */

:root {
    /* Enhanced Colors */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #64748b;
    --accent-color: #06b6d4;
    --accent-dark: #0891b2;
    --success-color: #059669;
    --warning-color: #d97706;
    --error-color: #dc2626;
    --info-color: #0284c7;
    --gold-color: #f59e0b;
    
    /* Enhanced Neutral Colors */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Enhanced Text Colors */
    --text-primary: #1e293b;
    --text-secondary: #000;
    --text-muted: #94a3b8;
    --text-light: #cbd5e1;
    --text-inverse: #ffffff;
    
    /* Enhanced Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-elevated: #ffffff;
    --bg-overlay: rgba(15, 23, 42, 0.8);
    
    /* Enhanced Border Colors */
    --border-light: #e2e8f0;
    --border-medium: #cbd5e1;
    --border-dark: #94a3b8;
    --border-subtle: #f1f5f9;
    
    /* Enhanced Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-soft: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-strong: 0 8px 16px rgba(0, 0, 0, 0.15);
    
    /* Enhanced Border Radius */
    --radius-sm: 0.125rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-3xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Enhanced Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Enhanced Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;
}

/* ==========================================================================
   Enhanced Breadcrumb Styles
   ========================================================================== */

.enhanced-breadcrumb {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-light);
    padding: 1rem 0;
    position: relative;
}

.enhanced-breadcrumb::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-light), transparent);
}

.breadcrumb {
    margin: 0;
    background: transparent;
    padding: 0;
    font-size: 0.875rem;
}

.breadcrumb-item {
    font-weight: 500;
    transition: var(--transition-smooth);
}

.breadcrumb-item + .breadcrumb-item::before {
    content: ">";
    color: var(--text-muted);
    font-weight: 600;
    padding: 0 0.5rem;
}

.breadcrumb-item a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.breadcrumb-item a:hover {
    color: var(--primary-color);
    text-decoration: none;
}

.breadcrumb-item.active {
    color: var(--text-primary);
    font-weight: 600;
}

/* ==========================================================================
   Enhanced Product Hero Styles
   ========================================================================== */

.product-hero {
    background: var(--bg-primary);
    padding: 2rem 0;
    margin-bottom: 2rem;
    position: relative;
}

.product-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at top, rgba(37, 99, 235, 0.02) 0%, transparent 70%);
    pointer-events: none;
}

/* Enhanced Product Gallery */
.product-gallery {
    position: sticky;
    top: 2rem;
    z-index: 10;
}

.main-image-container {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    background: var(--bg-tertiary);
    aspect-ratio: 1.6;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-smooth);
}

.main-image-container:hover {
    box-shadow: var(--shadow-xl);
}

.main-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.zoom-overlay {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
}

.main-image-container:hover .zoom-overlay {
    opacity: 1;
    transform: scale(1.05);
}

.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.375rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 3;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: badge-glow 2s ease-in-out infinite alternate;
}

@keyframes badge-glow {
    0% { box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3); }
    100% { box-shadow: 0 6px 20px rgba(245, 158, 11, 0.5); }
}

.product-badge.featured {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
}

.product-country-flag {
    position: absolute;
    top: 1rem;
    right: 4.5rem;
    width: 2rem;
    height: 1.5rem;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(255, 255, 255, 0.5);
    z-index: 3;
}

.country-flag-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.security-indicators {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    display: flex;
    gap: 0.25rem;
    z-index: 3;
}

.security-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #10b981;
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
    animation: security-pulse 2s infinite;
    cursor: pointer;
}

.security-dot:nth-child(2) { animation-delay: 0.5s; }
.security-dot:nth-child(3) { animation-delay: 1s; }
.security-dot:nth-child(4) { animation-delay: 1.5s; }

@keyframes security-pulse {
    0%, 100% { 
        transform: scale(1); 
        opacity: 1; 
    }
    50% { 
        transform: scale(1.2); 
        opacity: 0.8; 
    }
}

/* Image Loading Overlay */
.image-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    backdrop-filter: blur(2px);
}

.loading-spinner {
    width: 2rem;
    height: 2rem;
}

.spinner {
    width: 100%;
    height: 100%;
    border: 3px solid var(--border-light);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Enhanced Thumbnail Gallery */
.thumbnail-gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

.thumbnail-item {
    aspect-ratio: 1.6;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition-smooth);
    position: relative;
}

.thumbnail-item:hover {
    border-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.thumbnail-item.active {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.thumbnail-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.thumbnail-item:hover .thumbnail-image {
    transform: scale(1.05);
}

/* ==========================================================================
   Enhanced Product Information Styles
   ========================================================================== */

.product-info {
    padding-left: 2rem;
    position: relative;
}

.product-badge-top {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
    animation: badge-float 3s ease-in-out infinite;
}

@keyframes badge-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-2px); }
}

.product-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.2;
    position: relative;
}

.product-title::after {
    content: '';
    position: absolute;
    bottom: 0rem;
    left: 0;
    width: 3rem;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-full);
}

.product-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

/* Enhanced Product Rating */
.product-rating {
    margin-bottom: 2rem;
}

.rating-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.star-rating {
    display: flex;
    gap: 0.25rem;
}

.star-rating i {
    font-size: 1.25rem;
    transition: var(--transition-fast);
}

.rating-details {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.rating-text {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.875rem;
}

.review-count {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Enhanced Price Section */
.price-section {
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.price-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    opacity: 0.5;
}

.price-display {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.price-main {
    flex: 1;
}

.current-price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
    text-shadow: 0 2px 4px rgba(37, 99, 235, 0.1);
}

.price-label {
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    margin-top: 0.25rem;
}

.price-discount {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.25rem;
}

.original-price {
    color: var(--text-muted);
    text-decoration: line-through;
    font-size: 1.25rem;
    font-weight: 500;
}

.discount-badge {
    background: var(--error-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(220, 38, 38, 0.3);
    animation: discount-pulse 2s ease-in-out infinite;
}

@keyframes discount-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Enhanced Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.05), transparent);
    transition: left 0.5s ease;
}

.feature-item:hover::before {
    left: 100%;
}

.feature-item:hover {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    transform: translateY(-2px);
}

.feature-icon {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.feature-content {
    flex: 1;
}

.feature-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.feature-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.4;
}

/* Enhanced Bulk Pricing */
.bulk-pricing {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    margin-bottom: 2rem;
    position: relative;
}

.bulk-pricing::before {
    content: '';
    position: absolute;
    top: 0;
    left: 1rem;
    right: 1rem;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold-color), transparent);
    opacity: 0.5;
}

.bulk-pricing-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.bulk-pricing-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.pricing-item {
    text-align: center;
    padding: 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: var(--transition-smooth);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.pricing-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.pricing-item:hover::before {
    transform: scaleX(1);
}

.pricing-item:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.pricing-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.pricing-qty {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.pricing-savings {
    color: var(--success-color);
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: 0.25rem;
}

/* Enhanced CTA Section */
.cta-section {
    margin-bottom: 2rem;
}

.cta-button {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--radius-lg);
    font-size: 1.125rem;
    font-weight: 700;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    text-decoration: none;
}

.cta-info {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Enhanced Trust Signals */
.trust-signals {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-light);
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.trust-item i {
    font-size: 1rem;
}

/* ==========================================================================
   Enhanced Product Tabs Styles
   ========================================================================== */

.product-tabs {
    background: var(--bg-primary);
    padding: 2rem 0;
    position: relative;
}

.product-tabs::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-light), transparent);
}

.tabs-header {
    border-bottom: 1px solid var(--border-light);
    margin-bottom: 2rem;
    position: relative;
}

.custom-nav-tabs {
    border: none;
    display: flex;
    gap: 0;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.custom-nav-tabs::-webkit-scrollbar {
    display: none;
}

.custom-nav-tabs .nav-link {
    border: none;
    border-bottom: 3px solid transparent;
    background: none;
    color: var(--text-secondary);
    padding: 1rem 1.5rem;
    font-weight: 600;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
    position: relative;
}

.custom-nav-tabs .nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.custom-nav-tabs .nav-link:hover::before {
    opacity: 0.05;
}

.custom-nav-tabs .nav-link:hover {
    color: var(--primary-color);
    border-bottom-color: var(--primary-light);
}

.custom-nav-tabs .nav-link.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    background: none;
    position: relative;
}

.custom-nav-tabs .nav-link.active::before {
    opacity: 0.1;
}

/* Content Sections */
.content-section {
    position: relative;
}

.section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.section-icon {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.section-title-wrapper {
    flex: 1;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-primary);
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
    margin-top: 0.25rem;
}

/* ==========================================================================
   Enhanced Product Card Styles
   ========================================================================== */

.enhanced-product-card {
    position: relative;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: var(--transition-smooth);
    height: 100%;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
}

.enhanced-product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(37, 99, 235, 0.2);
}

/* Product Image Container */
.product-image-container {
    position: relative;
    height: 220px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
}

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

.product-picture {
    width: 100%;
    height: 100%;
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.enhanced-product-card:hover .product-image {
    transform: scale(1.05);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0;
    transition: var(--transition-smooth);
}

.overlay-gradient {
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 0%,
        rgba(0, 0, 0, 0.02) 50%,
        rgba(0, 0, 0, 0.08) 100%
    );
}

.enhanced-product-card:hover .image-overlay {
    opacity: 1;
}

/* Product Actions */
.product-actions {
    position: absolute;
    top: 50%;
    right: 1rem;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    opacity: 0;
    transition: var(--transition-smooth);
    z-index: 4;
}

.enhanced-product-card:hover .product-actions {
    opacity: 1;
}

.action-btn {
    width: 2.5rem;
    height: 2.5rem;
    border: none;
    border-radius: 50%;
    background: rgba(37, 99, 235, 0.95);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    font-size: 1rem;
    text-decoration: none;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}

.action-btn:hover {
    background: var(--primary-dark);
    color: white;
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.action-btn.wishlist-btn:hover {
    background: var(--error-color);
    color: white;
}

.action-btn.cart-btn:hover {
    background: var(--success-color);
    color: white;
}

.action-btn.compare-btn:hover {
    background: var(--accent-color);
    color: white;
}

/* Product Content */
.product-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* Product Category */
.product-category {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Product Title */
.product-title {
    margin: 0;
    line-height: 1.3;
}

.product-title-link {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.125rem;
    font-weight: 600;
    transition: var(--transition-smooth);
    display: block;
}

.product-title-link:hover {
    color: var(--primary-color);
    text-decoration: none;
}

/* Product Rating */
.product-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.rating-stars {
    display: flex;
    gap: 0.125rem;
}

.rating-stars i {
    font-size: 0.875rem;
    transition: var(--transition-smooth);
}

.star-active {
    color: #fbbf24;
}

.star-inactive {
    color: #d1d5db;
}

.rating-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Product Features */
.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    padding: 0.25rem 0.5rem;
    /* border-radius: 50px; */
    border: 1px solid var(--border-light);
    font-weight: 500;
    transition: var(--transition-smooth);
}

.feature-item:hover {
    /* background: var(--primary-color); */
    color: #bb0202;
    /* border-color: var(--primary-color); */
}

.feature-item i {
    font-size: 1rem;
}

.feature-item:nth-child(1) i {color: #ffffff;}
.feature-item:nth-child(2) i { color: #ffffff; }
.feature-item:nth-child(3) i {color: #ffffff;}

.feature-item:hover i {
    color: white;
}

/* Product Pricing */
.product-pricing {
    margin-top: auto;
}

.price-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.price-current {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.price-original {
    font-size: 1rem;
    color: var(--text-muted);
    text-decoration: line-through;
}

.price-discount {
    background:none;
    color: white;
    padding: 0.125rem 0.5rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

.price-contact {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* Mobile Action Buttons */
.product-actions-mobile {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: auto;
}

.product-btn-detail,
.product-btn-buy {
    border-radius: var(--radius-lg);
    font-weight: 600;
    padding: 0.75rem 1rem;
    transition: var(--transition-smooth);
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
    border: none;
    cursor: pointer;
}

.product-btn-detail {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    background: transparent;
}

.product-btn-detail:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    text-decoration: none;
}

.product-btn-buy {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

.product-btn-buy:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.product-btn-buy::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.product-btn-buy:hover::before {
    left: 100%;
}

/* Product Loading State */
.product-loading {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    backdrop-filter: blur(2px);
}

/* ==========================================================================
   Floating Actions & UI Elements
   ========================================================================== */

.floating-actions {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
}

.fab-main {
    width: 3.5rem;
    height: 3.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    border-radius: 50%;
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.fab-main:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-2xl);
}

.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    z-index: 1050;
    transition: width 0.1s ease;
}

.back-to-top {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    width: 3rem;
    height: 3rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    z-index: 1000;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* ==========================================================================
   Utility Classes & States
   ========================================================================== */

.lazy-image {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lazy-image.loaded {
    opacity: 1;
}

.animate-in {
    animation: fadeInUp 0.6s ease forwards;
}

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

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.sr-only-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* ==========================================================================
   Related Products Section
   ========================================================================== */

.related-products {
    background: var(--bg-secondary);
    padding: 4rem 0;
    margin-top: 4rem;
}

.related-products .section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.related-products .section-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.related-products .section-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

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

/* ==========================================================================
   Notification System
   ========================================================================== */

.notification {
    position: fixed;
    top: 2rem;
    right: 2rem;
    max-width: 400px;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: 1060;
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.notification.show {
    transform: translateX(0);
}

.notification-content {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
}

.notification-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.notification-success .notification-icon {
    background: var(--success-color);
    color: white;
}

.notification-error .notification-icon {
    background: var(--error-color);
    color: white;
}

.notification-warning .notification-icon {
    background: var(--warning-color);
    color: white;
}

.notification-info .notification-icon {
    background: var(--info-color);
    color: white;
}

.notification-message {
    flex: 1;
    color: var(--text-primary);
    font-weight: 500;
}

.notification-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--radius-sm);
    transition: var(--transition-smooth);
}

.notification-close:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 1199.98px) {
    .product-info {
        padding-left: 1rem;
    }
}

@media (max-width: 991.98px) {
    .product-hero .row {
        flex-direction: column;
    }

    .product-info {
        padding-left: 0;
        margin-top: 2rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

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

    .trust-signals {
        grid-template-columns: 1fr;
    }

    .related-products-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1.5rem;
    }
}

@media (max-width: 767.98px) {
    .product-title {
        font-size: 1.5rem;
    }

    .current-price {
        font-size: 2rem;
    }

    .thumbnail-gallery {
        grid-template-columns: repeat(3, 1fr);
    }

    .product-content {
        padding: 1rem;
    }
    
    .product-image-container {
        height: 180px;
    }
    
    .product-features {
        display: none;
    }
    
    .product-actions {
        display: none;
    }
    
    .security-indicators {
        bottom: 0.5rem;
        right: 0.5rem;
    }
    
    .security-dot {
        width: 6px;
        height: 6px;
    }

    .floating-actions {
        bottom: 1rem;
        right: 1rem;
    }

    .fab-main {
        width: 3rem;
        height: 3rem;
        font-size: 1.25rem;
    }
}

@media (max-width: 575.98px) {
    .product-hero {
        padding: 1rem 0;
    }

    .enhanced-breadcrumb {
        padding: 0.5rem 0;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .security-indicators {
        bottom: 0.5rem;
        right: 0.5rem;
    }

    .security-dot {
        width: 6px;
        height: 6px;
    }

    .related-products-grid {
        grid-template-columns: 1fr;
    }

    .notification {
        top: 1rem;
        right: 1rem;
        left: 1rem;
        max-width: none;
    }

    .back-to-top {
        bottom: 1rem;
        left: 1rem;
        width: 2.5rem;
        height: 2.5rem;
    }
}

/* ==========================================================================
   Dark Theme Support
   ========================================================================== */

@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #f1f5f9;
        --text-secondary: #cbd5e1;
        --text-muted: #94a3b8;
        --text-light: #64748b;
        
        --bg-primary: #0f172a;
        --bg-secondary: #1e293b;
        --bg-tertiary: #334155;
        --bg-elevated: #1e293b;
        --bg-overlay: rgba(241, 245, 249, 0.8);
        
        --border-light: #334155;
        --border-medium: #475569;
        --border-dark: #64748b;
        --border-subtle: #334155;
    }

    .enhanced-product-card {
        background: var(--bg-secondary);
        border-color: var(--border-dark);
    }

    .image-overlay .overlay-gradient {
        background: linear-gradient(
            to bottom,
            rgba(0, 0, 0, 0) 0%,
            rgba(0, 0, 0, 0.1) 50%,
            rgba(0, 0, 0, 0.3) 100%
        );
    }

    .feature-item {
        background: var(--bg-tertiary);
        border-color: var(--border-dark);
    }

    .product-loading {
        background: rgba(30, 41, 59, 0.95);
    }

    .notification {
        background: var(--bg-secondary);
        border-color: var(--border-dark);
    }
}

/* ==========================================================================
   High Contrast Mode
   ========================================================================== */

@media (prefers-contrast: high) {
    .enhanced-product-card {
        border-width: 2px;
    }
    
    .action-btn {
        border: 2px solid white;
    }
    
    .feature-item {
        border-width: 2px;
    }

    .cta-button {
        border: 2px solid var(--primary-color);
    }
}

/* ==========================================================================
   Reduced Motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .enhanced-product-card,
    .product-image,
    .action-btn,
    .product-btn-detail,
    .product-btn-buy {
        transition: none;
    }
    
    .security-dot {
        animation: none;
    }
    
    .enhanced-product-card:hover {
        transform: none;
    }
    
    .enhanced-product-card:hover .product-image {
        transform: none;
    }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
    .product-actions,
    .floating-actions,
    .back-to-top,
    .scroll-progress,
    .notification {
        display: none;
    }

    .enhanced-product-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #000;
    }

    .product-hero {
        break-after: page;
    }

    .related-products {
        break-before: page;
    }
}

/* ==========================================================================
   Focus Visible for Better Keyboard Navigation
   ========================================================================== */

:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}
/* Gallery specific styles */
.gallery-navigation-hint {
    margin-top: 0.5rem;
    text-align: center;
}

.gallery-navigation-hint small {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.75rem;
}

/* Zoom modal specific styles */
.zoom-image-container {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-xl);
}

.zoom-navigation {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    z-index: 1050;
    pointer-events: none;
}

.zoom-nav-btn {
    position: absolute;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    pointer-events: auto;
    backdrop-filter: blur(10px);
}

.zoom-nav-btn:hover {
    background: rgba(0, 0, 0, 0.9);
    transform: scale(1.1);
}

.zoom-nav-btn.prev-btn {
    left: 1rem;
}

.zoom-nav-btn.next-btn {
    right: 1rem;
}

.zoom-counter {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.zoom-controls {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.zoom-control-btn {
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
}

.zoom-control-btn:hover {
    background: rgba(0, 0, 0, 0.9);
}

.zoom-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    z-index: 1060;
}

.zoom-image-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: 2rem 1rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: end;
}

.image-title {
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.image-description {
    font-size: 0.875rem;
    opacity: 0.9;
    margin: 0;
}

.image-actions {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
}

.action-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    color: white;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .zoom-controls {
        flex-direction: row;
        bottom: 1rem;
        top: auto;
        left: 50%;
        right: auto;
        transform: translateX(-50%);
    }
    
    .gallery-navigation-hint {
        display: none;
    }
}


/* Product Info Component Styles */
.secondary-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.5rem;
    margin: 1rem 0;
}

.secondary-action-btn {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-medium);
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    text-decoration: none;
}

.secondary-action-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
    transform: translateY(-1px);
}

.secondary-action-btn:active {
    transform: translateY(0);
}

/* Product Variants */
.product-variants {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.variants-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.variants-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.variant-item {
    padding: 1rem;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-smooth);
    text-align: center;
}

.variant-item:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.variant-item.active {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
}

.variant-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.variant-price {
    color: var(--success-color);
    font-weight: 600;
    font-size: 0.875rem;
}

/* Quick Specifications */
.quick-specs {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.quick-specs-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.specs-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-light);
}

.spec-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.spec-label {
    font-weight: 600;
    color: var(--text-primary);
}

.spec-value {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Security Certifications */
.security-certifications {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.certifications-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.certifications-list {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.certification-item {
    display: flex;
    align-items: center;
    justify-content: center;
}

.cert-badge {
    height: 2.5rem;
    width: auto;
    opacity: 0.8;
    transition: var(--transition-smooth);
}

.cert-badge:hover {
    opacity: 1;
    transform: scale(1.05);
}

/* Responsive Design */
@media (max-width: 991.98px) {
    .product-info {
        padding-left: 0;
        margin-top: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767.98px) {
    .product-title {
        font-size: 1.5rem;
    }

    .current-price {
        font-size: 2rem;
    }

    .trust-signals {
        grid-template-columns: 1fr;
    }
    
    .secondary-actions {
        grid-template-columns: 1fr;
    }
    
    .certifications-list {
        justify-content: flex-start;
    }
    
    .cert-badge {
        height: 2rem;
    }
}

@media (max-width: 575.98px) {
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .variants-grid {
        grid-template-columns: 1fr;
    }
}

/* Modal Styles */
.modal-title-container {
    flex: 1;
}

.modal-subtitle {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Quick Order Modal */
.quick-order-summary {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.product-preview {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.product-thumb {
    width: 4rem;
    height: 4rem;
    object-fit: cover;
    border-radius: var(--radius-lg);
}

.product-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.product-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.order-total {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1rem;
    margin-top: 1rem;
}

.total-breakdown {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.total-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
}

.total-item.discount {
    color: var(--success-color);
}

.total-item.final {
    font-size: 1.125rem;
    font-weight: 700;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border-light);
}

/* Contact Modal */
.contact-options {
    margin-bottom: 2rem;
}

.contact-option {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-smooth);
    height: 100%;
}

.contact-option:hover,
.contact-option.active {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.option-icon {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 1rem;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.option-title {
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.option-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.option-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.option-status.online {
    color: var(--success-color);
}

/* Chat Interface */
.chat-interface {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.chat-header {
    background: var(--primary-color);
    color: white;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.agent-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.agent-avatar {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    object-fit: cover;
}

.agent-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.agent-status {
    font-size: 0.75rem;
    opacity: 0.9;
}

.chat-messages {
    height: 300px;
    overflow-y: auto;
    padding: 1rem;
    background: white;
}

.message {
    margin-bottom: 1rem;
}

.agent-message .message-content {
    background: var(--bg-secondary);
    padding: 0.75rem;
    border-radius: var(--radius-lg);
    margin-right: 2rem;
}

.user-message .message-content {
    background: var(--primary-color);
    color: white;
    padding: 0.75rem;
    border-radius: var(--radius-lg);
    margin-left: 2rem;
    text-align: right;
}

.message-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.chat-input {
    padding: 1rem;
    background: white;
    border-top: 1px solid var(--border-light);
}

.chat-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.action-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

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

/* Share Modal */
.social-share,
.copy-link,
.email-share,
.qr-share {
    margin-bottom: 2rem;
}

.share-section-title {
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.social-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.75rem;
}

.social-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    color: var(--text-primary);
    padding: 0.75rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-decoration: none;
    font-weight: 500;
}

.social-btn:hover {
    color: white;
    text-decoration: none;
}

.social-btn.facebook:hover { background: #1877f2; border-color: #1877f2; }
.social-btn.twitter:hover { background: #1da1f2; border-color: #1da1f2; }
.social-btn.linkedin:hover { background: #0077b5; border-color: #0077b5; }
.social-btn.whatsapp:hover { background: #25d366; border-color: #25d366; }
.social-btn.telegram:hover { background: #0088cc; border-color: #0088cc; }
.social-btn.reddit:hover { background: #ff4500; border-color: #ff4500; }

.qr-code-container {
    text-align: center;
}

.qr-code {
    width: 150px;
    height: 150px;
    margin: 0 auto 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--text-muted);
}

.qr-instructions {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

/* Login Modal */
.login-prompt {
    margin-bottom: 2rem;
}

.login-benefits {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    justify-content: center;
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .social-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .chat-messages {
        height: 250px;
    }
    
    .login-benefits {
        text-align: left;
    }
    
    .benefit-item {
        justify-content: flex-start;
    }
}
/* ==========================================================================
   Enhanced Product Description Styles
   ========================================================================== */

.product-description-container {
    max-width: none;
}

/* Product Highlights */
.product-highlights {
    margin-bottom: 3rem;
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.highlight-item {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.highlight-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.highlight-item:hover::before {
    transform: scaleX(1);
}

.highlight-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.highlight-icon {
    width: 4rem;
    height: 4rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.highlight-content h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.highlight-content p {
    color: var(--text-secondary);
    margin: 0 0 1rem 0;
    line-height: 1.6;
}

.highlight-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

@media (max-width: 768px) {
    .highlights-grid {
        grid-template-columns: 1fr; /* 改为单列 */
        gap: 1rem;
    }
    
    .specs-grid {
        grid-template-columns: 1fr; /* 改为单列 */
    }
    
    .info-categories .row > .col-md-4 {
        margin-bottom: 1rem;
    }
}

@media (max-width: 768px) {
    .spec-items {
        gap: 0.5rem; /* 减少间距 */
    }
    
    .spec-item {
        flex-direction: column; /* 改为垂直布局 */
        align-items: flex-start;
        gap: 0.25rem;
        padding: 0.75rem 0;
    }
    
    .spec-label {
        font-size: 0.875rem;
        font-weight: 600;
        color: var(--text-primary);
        min-width: auto; /* 移除最小宽度限制 */
    }
    
    .spec-value {
        font-size: 0.8rem;
        text-align: left; /* 改为左对齐 */
        line-height: 1.4;
        color: var(--text-secondary);
    }
}

@media (max-width: 480px) {
    .spec-value {
        word-break: break-word; /* 允许长单词换行 */
        hyphens: auto; /* 自动连字符 */
    }
    
    .materials-specs {
        padding: 1rem; /* 减少整体内边距 */
    }
    
    .spec-category {
        padding: 0.75rem;
        margin-bottom: 1rem;
    }
}
.table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

@media (max-width: 768px) {
    .table-wrapper {
        margin: 0 -1rem; /* 扩展到容器边缘 */
        border-radius: 0;
    }
}

@media (max-width: 768px) {
    .text-truncate-mobile {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        max-width: 100%;
    }
    
    /* 或者使用多行截断 */
    .text-truncate-mobile-lines {
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        line-height: 1.4;
        max-height: 2.8em;
    }
}
@media (max-width: 768px) {
    .info-categories .col-md-4 {
        margin-bottom: 1.5rem;
    }
    
    .info-list {
        gap: 0.5rem; /* 减少间距 */
    }
    
    .info-item {
        font-size: 0.8rem; /* 减小字体 */
        gap: 0.5rem;
    }
}
.feature-tag {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid var(--border-light);
}

.feature-tag i {
    font-size: 0.625rem;
    color: var(--success-color);
}

/* Security Features */
.security-features-detail {
    margin-bottom: 3rem;
}

.comparison-table {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    
    box-shadow: var(--shadow-sm);
}

@media (max-width: 768px) {
    /* 表格滚动优化 */
    .comparison-table {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .comparison-header,
    .table-row {
        min-width: 600px; /* 确保最小宽度 */
        grid-template-columns: 2fr 1fr 1.5fr; /* 调整列宽比例 */
    }
    
    .comparison-header > div,
    .table-row > div {
        padding: 0.75rem 0.5rem; /* 减少内边距 */
        font-size: 0.875rem; /* 减小字体 */
    }
}

@media (max-width: 480px) {
    .comparison-header,
    .table-row {
        min-width: 500px;
        grid-template-columns: 1.5fr 1fr 1fr;
    }
}

.table-header {
    display: grid;
    grid-template-columns: 2fr 1fr 2fr;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 1rem;
    font-weight: 700;
    font-size: 0.875rem;
}

.table-row {
    display: grid;
    grid-template-columns: 2fr 1fr 2fr;
    padding: 1rem;
    border-bottom: 1px solid var(--border-light);
    align-items: center;
    transition: var(--transition-smooth);
}

.table-row:last-child {
    border-bottom: none;
}

.table-row:hover {
    background: var(--bg-secondary);
}

.feature-name {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
}

.feature-name i {
    font-size: 1.25rem;
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--success-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    justify-self: center;
    box-shadow: 0 2px 8px rgba(5, 150, 105, 0.3);
}

.feature-benefit {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.4;
}

/* Security Certification */
.security-certification {
    margin-top: 2rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
}

.certification-content {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.certification-badge {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--gold-color), #d97706);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.certification-text h5 {
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.certification-text p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.875rem;
}

/* Materials & Construction */
.materials-construction {
    margin-bottom: 3rem;
}

.layer-diagram {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.layer-diagram-title {
    text-align: center;
    margin-bottom: 2rem;
}

.layer-diagram-title h5 {
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.layer-diagram-title p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.875rem;
}

.layer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    margin-bottom: 0.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: var(--transition-smooth);
}

.layer:hover {
    background: rgba(37, 99, 235, 0.05);
    border-color: var(--primary-color);
}

.layer-content {
    flex: 1;
}

.layer-label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.layer-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.layer-visual {
    /* width: 2rem; */
    height: 2rem;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    opacity: 0.7;
}

/* Material Specifications */
.materials-specs {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
}

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

.spec-category {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

.category-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.category-title i {
    font-size: 1.25rem;
}

.spec-items {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-light);
}

.spec-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.spec-label {
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
}

.spec-value {
    color: var(--text-secondary);
    text-align: right;
    font-size: 0.875rem;
    line-height: 1.4;
}

/* Quality Assurance */
.quality-assurance {
    margin-bottom: 3rem;
}

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

.quality-point {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    transition: var(--transition-smooth);
}

.quality-point:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.quality-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    background: var(--bg-secondary);
    flex-shrink: 0;
}

.quality-text {
    flex: 1;
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.875rem;
}

.quality-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* Quality Guarantee */
.quality-guarantee {
    margin-top: 2rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(5, 150, 105, 0.1), rgba(5, 150, 105, 0.05));
    border: 1px solid rgba(5, 150, 105, 0.2);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.guarantee-badge {
    width: 3rem;
    height: 3rem;
    background: var(--success-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 12px rgba(5, 150, 105, 0.3);
}

.guarantee-content h5 {
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--success-color);
}

.guarantee-content p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.875rem;
}



/* ==========================================================================
   Enhanced Reviews Styles
   ========================================================================== */

.enhanced-reviews-section {
    position: relative;
}

/* Review Summary */
.review-summary {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
}

.average-rating {
    text-align: center;
}

.rating-score {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.star-rating-large {
    display: flex;
    justify-content: center;
    gap: 0.25rem;
    margin-bottom: 1rem;
}

.star-rating-large i {
    font-size: 1.5rem;
}

.rating-summary-text {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.rating-breakdown {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.rating-bar-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.rating-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    min-width: 3rem;
}

.rating-progress {
    flex: 1;
    height: 0.5rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.rating-progress .progress-bar {
    background: linear-gradient(90deg, var(--warning-color), #fbbf24);
    transition: width 0.3s ease;
}

.rating-count {
    font-size: 0.875rem;
    color: var(--text-muted);
    min-width: 2rem;
    text-align: right;
}

/* Review Filters */
.review-filters {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.filter-label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.filter-select {
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition-smooth);
}

.filter-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    outline: none;
}

/* Enhanced Review Cards */
.enhanced-reviews-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.enhanced-review-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 2rem;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.enhanced-review-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.enhanced-review-card:hover::before {
    transform: scaleX(1);
}

.enhanced-review-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* Review Header */
.review-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    gap: 1rem;
}

.reviewer-profile {
    display: flex;
    gap: 1rem;
    flex: 1;
}

.reviewer-avatar-wrapper {
    position: relative;
    flex-shrink: 0;
}

.reviewer-avatar {
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--border-light);
    transition: var(--transition-smooth);
}

.reviewer-avatar:hover {
    border-color: var(--primary-color);
}

.verified-badge {
    position: absolute;
    bottom: -2px;
    right: -2px;
    background: var(--success-color);
    color: white;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    border: 2px solid white;
    box-shadow: var(--shadow-sm);
}

.reviewer-details {
    flex: 1;
    min-width: 0;
}

.reviewer-name {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.reviewer-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.verification-status,
.review-date {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.star-rating-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.star-rating {
    display: flex;
    gap: 0.125rem;
}

.star-rating i {
    font-size: 1rem;
}

.rating-text {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.875rem;
}

/* Review Actions */
.review-actions {
    display: flex;
    gap: 0.5rem;
    align-items: flex-start;
}

.helpful-btn,
.menu-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    padding: 0.5rem;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    transition: var(--transition-smooth);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.helpful-btn:hover,
.menu-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.helpful-count {
    font-weight: 600;
}

/* Review Content */
.review-content {
    margin-bottom: 1.5rem;
}

.review-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.review-text {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.review-body {
    position: relative;
}

.read-more-btn {
    background: none;
    border: none;
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0;
    transition: var(--transition-smooth);
}

.read-more-btn:hover {
    color: var(--primary-dark);
}

.read-more-icon {
    transition: transform 0.3s ease;
}

.read-more-btn[aria-expanded="true"] .read-more-icon {
    transform: rotate(180deg);
}

/* Review Photos */
.review-photos {
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.photos-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.photos-label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.photos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 0.75rem;
}

.photo-item {
    aspect-ratio: 1;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    position: relative;
    transition: var(--transition-smooth);
}

.photo-item:hover {
    transform: scale(1.05);
}

.photo-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-smooth);
}

.photo-item:hover .photo-overlay {
    opacity: 1;
}

/* Review Pros and Cons */
.review-pros-cons {
    margin: 1.5rem 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.pros-section,
.cons-section {
    padding: 1rem;
    border-radius: var(--radius-lg);
}

.pros-section {
    background: rgba(5, 150, 105, 0.05);
    border: 1px solid rgba(5, 150, 105, 0.2);
}

.cons-section {
    background: rgba(217, 119, 6, 0.05);
    border: 1px solid rgba(217, 119, 6, 0.2);
}



.pros-list,
.cons-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.pro-item,
.con-item {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.pro-item i,
.con-item i {
    margin-top: 0.125rem;
    flex-shrink: 0;
}

/* Review Attributes */
.review-attributes {
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.attributes-title {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.attributes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.attribute-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.attribute-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.attribute-rating {
    display: flex;
    gap: 0.125rem;
}

.attribute-rating i {
    font-size: 0.875rem;
}

.attribute-score {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 600;
}

/* Review Footer */
.review-footer {
    border-top: 1px solid var(--border-light);
    padding-top: 1.5rem;
}

.review-helpfulness {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.helpfulness-question {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
}

.helpfulness-buttons {
    display: flex;
    gap: 0.5rem;
}

.btn-helpful {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.btn-helpful:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.btn-helpful .count {
    font-weight: 600;
}

.btn-helpful:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-helpful.voted {
    background: var(--success-color);
    color: white;
    border-color: var(--success-color);
}

/* Seller Response */
.seller-response {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-left: 4px solid var(--primary-color);
    border-radius: var(--radius-lg);
}

.response-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.seller-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.875rem;
}

.response-date {
    color: var(--text-muted);
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.response-content p {
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
    font-size: 0.875rem;
}

/* Review Replies */
.review-replies {
    margin-top: 1rem;
}

.replies-toggle {
    background: none;
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    width: 100%;
    justify-content: center;
}

.replies-toggle:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.toggle-icon {
    transition: transform 0.3s ease;
}

.replies-toggle[aria-expanded="true"] .toggle-icon {
    transform: rotate(180deg);
}

.replies-container {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
}

.replies-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 2rem;
    color: var(--text-muted);
}

.loading-spinner .spinner {
    width: 1.5rem;
    height: 1.5rem;
    border: 2px solid var(--border-light);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Empty State */
.reviews-empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
}

.empty-state-content {
    max-width: 400px;
    margin: 0 auto;
}

.empty-state-icon {
    width: 5rem;
    height: 5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 1.5rem;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.empty-state-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.empty-state-text {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.empty-state-actions {
    margin-bottom: 2rem;
}

.review-incentive {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(5, 150, 105, 0.05);
    border: 1px solid rgba(5, 150, 105, 0.2);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
}

.incentive-icon {
    color: var(--success-color);
    font-size: 1.25rem;
}

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

.incentive-text strong {
    color: var(--success-color);
}

/* Write Review CTA */
.write-review-cta {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 2rem;
    margin-top: 2rem;
}

.cta-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.cta-text h5 {
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.cta-text p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.875rem;
}

/* Enhanced Pagination */
.enhanced-reviews-pagination {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-light);
}

.pagination-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

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

.pagination {
    margin: 0;
    display: flex;
    gap: 0.25rem;
    list-style: none;
    padding: 0;
}

.page-item {
    list-style: none;
}

.page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem;
    min-width: 2.5rem;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-smooth);
}

.page-link:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    text-decoration: none;
}

.page-item.active .page-link {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.page-item.disabled .page-link {
    color: var(--text-muted);
    cursor: not-allowed;
    background: var(--bg-tertiary);
}


/* ==========================================================================
   Enhanced Product Specifications Styles  
   ========================================================================== */

.product-specifications-container {
    max-width: none;
}

/* Specifications Container */
/*.specifications-container {*/
/*    display: flex;*/
/*    flex-direction: column;*/
/*    gap: 2rem;*/
/*}*/


.specifications-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    align-items: start;
}

/* 确保移动端仍然是单列 */
@media (max-width: 768px) {
    .specifications-container {
        display: flex;
        flex-direction: column;
        gap: 1rem;
    }
}
.spec-category {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.category-header {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.category-icon {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.category-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.specs-table {
    padding: 1.5rem;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition-smooth);
}

.spec-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.spec-row:hover {
    background: var(--bg-secondary);
    margin: 0 -1.5rem;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    border-radius: var(--radius-md);
}

.spec-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    flex-shrink: 0;
    min-width: 200px;
}

.spec-arrow {
    font-size: 0.75rem;
    color: var(--text-muted);
    transition: var(--transition-smooth);
}

.spec-row:hover .spec-arrow {
    color: var(--primary-color);
    transform: translateX(2px);
}

.spec-value {
    color: var(--text-secondary);
    text-align: right;
    font-size: 0.875rem;
    line-height: 1.4;
}

/* Comparison Chart */
.comparison-chart {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 2rem;
    margin: 3rem 0;
}

.chart-header {
    text-align: center;
    margin-bottom: 2rem;
}

.chart-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.chart-subtitle {
    color: var(--text-secondary);
    margin: 0;
}

.comparison-table {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    /* overflow: hidden; */
}

.comparison-header {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    font-weight: 700;
    font-size: 0.875rem;
}

.comparison-header > div {
    padding: 1rem;
    text-align: center;
}

.comparison-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition-smooth);
}

.comparison-row:last-child {
    border-bottom: none;
}

.comparison-row:hover {
    background: var(--bg-secondary);
}

.feature-column {
    padding: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.our-product-column,
.standard-column,
.advantage-column {
    padding: 1rem;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.value-badge {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 0.875rem;
}

.our-badge {
    background: var(--success-color);
    color: white;
}

.standard-badge {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.advantage-badge {
    background: var(--gold-color);
    color: white;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
}

/* Technical Diagrams */
.technical-diagrams {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 2rem;
    margin: 3rem 0;
}

.diagrams-header {
    text-align: center;
    margin-bottom: 2rem;
}

.diagrams-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.diagrams-subtitle {
    color: var(--text-secondary);
    margin: 0;
}

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

.diagram-item {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: center;
}

.diagram-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

/* Layer Construction Diagram */
/* Technical Diagrams Enhanced Styles */
.technical-diagrams {
    margin-bottom: 3rem;
}

.diagrams-header {
    text-align: center;
    margin-bottom: 2rem;
}

.diagrams-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.diagrams-title i {
    font-size: 2rem;
    color: var(--primary-color);
}

.diagrams-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    margin: 0;
}

.diagrams-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.diagram-item {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

.diagram-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.diagram-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    text-align: center;
    position: relative;
}

.diagram-title::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 3rem;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-full);
}

/* Enhanced Layer Construction Diagram */
.layer-construction-diagram {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.layer-visualization {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.layer-stack {
    display: flex;
    flex-direction: column-reverse;
    gap: 1px;
    min-width: 120px;
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.layer-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    cursor: pointer;
    overflow: hidden;
}

.layer-visual:hover {
    transform: scaleX(1.02);
    z-index: 2;
    box-shadow: 0 0 0 2px var(--primary-color);
}

.layer-highlight {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    opacity: 0;
    transition: var(--transition-smooth);
}

.layer-visual:hover .layer-highlight {
    opacity: 1;
    animation: shimmer 1.5s ease-in-out infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.layer-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.layer-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    transition: var(--transition-smooth);
    cursor: pointer;
}

.layer-info:hover {
    background: rgba(37, 99, 235, 0.05);
    transform: translateX(0.25rem);
}

.layer-info[data-layer="0"]:hover { border-left: 3px solid #e2e8f0; }
.layer-info[data-layer="1"]:hover { border-left: 3px solid #fbbf24; }
.layer-info[data-layer="2"]:hover { border-left: 3px solid #3b82f6; }
.layer-info[data-layer="3"]:hover { border-left: 3px solid #1e293b; }
.layer-info[data-layer="4"]:hover { border-left: 3px solid #dc2626; }

.layer-connector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.connector-line {
    width: 2rem;
    height: 1px;
    background: var(--border-medium);
    position: relative;
}

.connector-line::after {
    content: '';
    position: absolute;
    right: -3px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 4px solid var(--border-medium);
    border-top: 3px solid transparent;
    border-bottom: 3px solid transparent;
}

.connector-dot {
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 50%;
    box-shadow: 0 0 0 2px white, 0 0 0 3px var(--border-light);
}

.layer-content {
    flex: 1;
}

.layer-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.layer-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.layer-thickness {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.total-thickness {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
}

.thickness-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
}

.thickness-text {
    font-weight: 500;
}

.thickness-value {
    font-weight: 700;
}

/* Enhanced Security Features Map */
.security-features-diagram {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.security-visualization {
    display: flex;
    align-items: center;
    gap: 2rem;
    align-content: center;
    flex-direction: column;
}

.id-card-outline {
    position: relative;
    width: 160px;
    height: 100px;
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
    border: 2px solid var(--border-medium);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.card-body {
    position: relative;
    width: 100%;
    height: 100%;
    padding: 0.5rem;
}

.card-header-strip {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 0.75rem;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.card-photo-placeholder {
    position: absolute;
    top: 1rem;
    left: 0.5rem;
    width: 1.5rem;
    height: 1.75rem;
    background: #d1d5db;
    border-radius: var(--radius-sm);
}

.card-text-lines {
    position: absolute;
    top: 1rem;
    right: 0.5rem;
    left: 2.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.text-line {
    height: 0.125rem;
    background: #9ca3af;
    border-radius: var(--radius-full);
}

.text-line.long { width: 100%; }
.text-line.medium { width: 75%; }
.text-line.short { width: 50%; }

.card-barcode {
    position: absolute;
    bottom: 0.5rem;
    right: 0.5rem;
    width: 2rem;
    height: 0.75rem;
    background: repeating-linear-gradient(
        90deg,
        #000 0px,
        #000 1px,
        transparent 1px,
        transparent 2px
    );
}

.security-feature {
    position: absolute;
    z-index: 3;
}

.feature-marker {
    position: relative;
    width: 1rem;
    height: 1rem;
    cursor: pointer;
}

.marker-pulse {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    background: rgba(37, 99, 235, 0.2);
    animation: pulse 2s infinite;
}

.marker-dot {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 50%;
    border: 2px solid white;
    box-shadow: var(--shadow-sm);
    z-index: 2;
}

.marker-dot.holo { background: #fbbf24; }
.marker-dot.uv { background: #8b5cf6; }
.marker-dot.micro { background: #06b6d4; }
.marker-dot.barcode { background: #dc2626; }

@keyframes pulse {
    0% {
        transform: translate(-50%, -50%) scale(0.8);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) scale(2);
        opacity: 0;
    }
}

.security-features-list {
    flex: 1;
    display: flex;
    gap: 0.75rem;
    flex-direction: column-reverse;
}

.security-feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    transition: var(--transition-smooth);
    cursor: pointer;
    border: 1px solid transparent;
}

.security-feature-item:hover {
    background: rgba(37, 99, 235, 0.05);
    border-color: var(--primary-color);
    transform: translateX(0.25rem);
}

.feature-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.125rem;
    box-shadow: var(--shadow-sm);
}

.feature-details {
    flex: 1;
}

.feature-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.feature-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.feature-status {
    font-size: 1.25rem;
}

/* Interactive Effects */
.layer-visual:hover ~ .layer-details .layer-info[data-layer] {
    opacity: 0.5;
}

.layer-visual:hover ~ .layer-details .layer-info[data-layer]:hover {
    opacity: 1;
}

.security-feature:hover .marker-pulse {
    animation-duration: 0.5s;
}

.security-feature:hover ~ .security-features-list .security-feature-item {
    opacity: 0.5;
}

.security-feature[data-feature="0"]:hover ~ .security-features-list .security-feature-item[data-feature="0"],
.security-feature[data-feature="1"]:hover ~ .security-features-list .security-feature-item[data-feature="1"],
.security-feature[data-feature="2"]:hover ~ .security-features-list .security-feature-item[data-feature="2"],
.security-feature[data-feature="3"]:hover ~ .security-features-list .security-feature-item[data-feature="3"] {
    opacity: 1;
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--primary-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .diagrams-grid {
        grid-template-columns: 1fr;
    }
    
    .layer-visualization,
    .security-visualization {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .layer-stack {
        min-width: 200px;
    }
    
    .id-card-outline {
        width: 200px;
        height: 125px;
    }
    
    .diagram-item {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .diagrams-title {
        font-size: 1.5rem;
    }
    
    .layer-info,
    .security-feature-item {
        padding: 0.75rem;
    }
    
    .feature-icon {
        width: 2rem;
        height: 2rem;
        font-size: 1rem;
    }
}
/* Security Features Map */
.security-map {
    position: relative;
    max-width: 300px;
    margin: 0 auto;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    aspect-ratio: 1.6;
}

.id-outline {
    position: relative;
    width: 100%;
    height: 100%;
    border: 2px solid var(--border-dark);
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
}

.security-feature {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.feature-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid white;
    box-shadow: var(--shadow-md);
    animation: feature-pulse 2s infinite;
}

.feature-dot.holo { background: var(--gold-color); }
.feature-dot.uv { background: var(--primary-color); }
.feature-dot.micro { background: var(--success-color); }
.feature-dot.barcode { background: var(--info-color); }

@keyframes feature-pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.8; }
}

.feature-label {
    font-size: 0.625rem;
    font-weight: 600;
    color: var(--text-primary);
    background: white;
    padding: 0.125rem 0.25rem;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    white-space: nowrap;
}

/* Download Specifications */
.download-specs {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 2rem;
    margin: 3rem 0;
}

.download-header {
    text-align: center;
    margin-bottom: 2rem;
}

.download-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.download-subtitle {
    color: var(--text-secondary);
    margin: 0;
}

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

.download-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition-smooth);
}

.download-btn:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
    color: var(--text-primary);
}

.download-icon {
    width: 3rem;
    height: 3rem;
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.download-info {
    flex: 1;
}

.download-format {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

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

/* Compliance & Certifications */
.compliance-certifications {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 2rem;
    margin: 3rem 0;
}

.compliance-header {
    text-align: center;
    margin-bottom: 2rem;
}

.compliance-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.compliance-subtitle {
    color: var(--text-secondary);
    margin: 0;
}

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

.certification-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: var(--transition-smooth);
}

.certification-item:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.cert-icon {
    width: 3rem;
    height: 3rem;
    background: var(--success-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.cert-info {
    flex: 1;
}

.cert-name {
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.cert-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   Ordering Information Styles
   ========================================================================== */

.ordering-info {
    margin-bottom: 3rem;
}

.info-categories {
    margin-top: 2rem;
}

.info-category {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    height: 100%;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.info-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.info-category:hover::before {
    transform: scaleX(1);
}

.info-category:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.category-icon {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--gold-color), #d97706);
    color: white;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.category-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-primary);
}

.category-content {
    margin-top: 1rem;
}

.info-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
}

.info-item i {
    margin-top: 0.125rem;
    flex-shrink: 0;
    font-size: 1rem;
}

/* Photo Guidelines */
.photo-guidelines {
    margin-top: 2rem;
    padding: 2rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
}

.guidelines-header {
    text-align: center;
    margin-bottom: 2rem;
}

.guidelines-header h5 {
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.guidelines-header p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.875rem;
}

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

.photo-example {
    text-align: center;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    transition: var(--transition-smooth);
}

.photo-example.good {
    background: rgba(5, 150, 105, 0.05);
    border: 1px solid rgba(5, 150, 105, 0.2);
}

.photo-example.bad {
    background: rgba(220, 38, 38, 0.05);
    border: 1px solid rgba(220, 38, 38, 0.2);
}

.example-image {
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 2rem;
}

.example-label {
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.example-label.good {
    color: var(--success-color);
}

.example-label.bad {
    color: var(--error-color);
}

.example-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* ==========================================================================
   Delivery and Support Styles
   ========================================================================== */

.delivery-support {
    margin-top: 3rem;
}

.support-section {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 2rem;
    height: 100%;
}

.delivery-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.delivery-option {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: var(--transition-smooth);
    cursor: pointer;
}

.delivery-option:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.option-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
}

.option-info {
    flex: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.option-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1.3rem;
}

.option-price {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.3rem;
}

.option-details {
    margin-left: 3.5rem;
}

.option-time {
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.option-features {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 1rem;
}

.feature i {
    font-size: 0.75rem;
}

/* Support Options */
.support-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.support-option {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: var(--transition-smooth);
}

.support-option:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.support-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    flex-shrink: 0;
}

.support-content {
    flex: 1;
}

.support-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.support-description {
    color: var(--text-secondary);
    font-size: 0.75rem;
    line-height: 1.4;
    margin: 0;
}

.contact-cta {
    text-align: center;
}

/* Trust & Security Footer */
.trust-security-footer {
    margin-top: 3rem;
    padding: 2rem;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
}

.trust-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.trust-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: var(--transition-smooth);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.trust-item:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.trust-item i {
    font-size: 1.25rem;
}


/* FAQ Container */
.product-faq-container {
    max-width: none;
}

/* FAQ Search */
.faq-search {
    margin-bottom: 2rem;
}

.search-container {
    max-width: 600px;
    margin: 0 auto;
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
    z-index: 2;
}

.search-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-xl);
    font-size: 1rem;
    transition: var(--transition-smooth);
    background: var(--bg-primary);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-clear {
    position: absolute;
    right: 1rem;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition-smooth);
}

.search-clear:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.search-results-count {
    text-align: center;
    margin-top: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* FAQ Categories */
.faq-categories {
    margin-bottom: 2rem;
}

.categories-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

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

.categories-filter {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.category-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--bg-primary);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-smooth);
    cursor: pointer;
    font-weight: 500;
}

.category-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.category-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.category-count {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.category-btn.active .category-count {
    background: rgba(255, 255, 255, 0.3);
}

/* Popular Questions */
.popular-questions {
    margin-bottom: 3rem;
}

.popular-header {
    text-align: center;
    margin-bottom: 2rem;
}

.popular-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.popular-subtitle {
    color: var(--text-secondary);
    margin: 0;
}

.popular-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.popular-faq-item {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    transition: var(--transition-smooth);
}

.popular-faq-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.popular-question {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.popular-answer {
    color: var(--text-secondary);
    line-height: 1.6;
}

.read-full-btn {
    background: none;
    border: none;
    color: var(--primary-color);
    font-weight: 600;
    cursor: pointer;
    padding: 0;
    text-decoration: underline;
    margin-left: 0.5rem;
}

/* FAQ Accordion */
.faq-accordion {
    margin-bottom: 3rem;
}

.accordion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.accordion-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
}

.accordion-controls {
    display: flex;
    gap: 0.5rem;
}

.control-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.control-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.faq-item {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: var(--transition-smooth);
}

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

.faq-question {
    width: 100%;
    padding: 1.5rem;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    transition: var(--transition-smooth);
}

.faq-question:hover {
    background: var(--bg-secondary);
}

.question-content {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.question-text {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.popular-badge {
    background: var(--warning-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.question-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.category-tag {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
}

.faq-icon {
    font-size: 1.25rem;
    color: var(--text-muted);
    transition: transform 0.3s ease;
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer-container {
    border-top: 1px solid var(--border-light);
}

.faq-answer {
    padding: 1.5rem;
}

.answer-content {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.answer-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--border-light);
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.helpful-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.helpful-text {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.helpful-buttons {
    display: flex;
    gap: 0.5rem;
}

.helpful-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.helpful-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.share-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.share-btn:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.answer-tags {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tags-label {
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
}

.tag-item {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.tag-item:hover {
    background: var(--primary-color);
    color: white;
}

/* No Results */
.no-results {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    margin: 2rem 0;
}

.no-results-icon {
    width: 4rem;
    height: 4rem;
    background: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--text-muted);
    margin: 0 auto 1.5rem;
}

.no-results-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.no-results-text {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.no-results-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0 auto;
}

.no-results-btn:hover {
    background: var(--primary-dark);
}

/* FAQ Support */
.faq-support {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 2rem;
    margin-bottom: 2rem;
}

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

.support-content {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
    text-align: center;
}

.support-icon {
    width: 4rem;
    height: 4rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.support-text {
    flex: 1;
    min-width: 200px;
}

.support-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.support-subtitle {
    color: var(--text-secondary);
    margin: 0;
}

.support-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.support-btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    border: 2px solid transparent;
}

.support-btn.primary {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.support-btn.primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: white;
}

.support-btn.secondary {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--border-medium);
}

.support-btn.secondary:hover {
    background: var(--bg-primary);
    border-color: var(--primary-color);
    color: var(--primary-color);
    text-decoration: none;
}

/* FAQ Statistics */
.faq-stats {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 2rem;
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .categories-filter {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .popular-grid {
        grid-template-columns: 1fr;
    }
    
    .accordion-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .question-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .answer-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .support-content {
        flex-direction: column;
        text-align: center;
    }
    
    .support-actions {
        justify-content: center;
    }
    
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .categories-filter {
        grid-template-columns: 1fr;
    }
    
    .stats-container {
        grid-template-columns: 1fr;
    }
}


@media (max-width: 768px) {
    /* 规格容器优化 */
    .specifications-container {
        gap: 1rem; /* 减少间距 */
    }
    
    .spec-category {
        padding: 1rem; /* 减少内边距 */
        margin-bottom: 1rem;
    }
    
    .category-header {
        padding: 1rem;
        flex-wrap: wrap;
        gap: 0.75rem;
    }
    
    .category-title {
        font-size: 1.125rem; /* 减小标题字体 */
    }
    
    .category-icon {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1.125rem;
    }
    
    /* 规格行优化 */
    .spec-row {
        flex-direction: column; /* 改为垂直布局 */
        align-items: flex-start;
        gap: 0.5rem;
        padding: 1rem 0;
    }
    
    .spec-label {
        min-width: auto;
        font-size: 0.9rem;
        font-weight: 600;
    }
    
    .spec-value {
        font-size: 0.85rem;
        text-align: left;
        padding-left: 1rem; /* 增加缩进 */
        line-height: 1.5;
        word-break: break-word;
    }
    
    .spec-arrow {
        display: none; /* 隐藏箭头 */
    }
}

@media (max-width: 768px) {
    /* 比较表格容器添加滚动 */
    .comparison-chart {
        padding: 1rem;
    }
    
    .comparison-table {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-sm);
    }
    
    .comparison-header,
    .comparison-row {
        min-width: 600px; /* 设置最小宽度确保可读性 */
        grid-template-columns: 1.5fr 1fr 1fr 1fr;
    }
    
    .comparison-header > div,
    .comparison-row > div {
        padding: 0.75rem 0.5rem;
        font-size: 0.8rem;
    }
    
    .feature-column {
        font-size: 0.85rem;
        font-weight: 600;
    }
    
    .value-badge {
        padding: 0.25rem 0.5rem;
        font-size: 0.75rem;
    }
    
    .advantage-badge {
        font-size: 0.7rem;
        padding: 0.25rem 0.5rem;
    }
}

@media (max-width: 480px) {
    .comparison-header,
    .comparison-row {
        min-width: 500px;
    }
}

@media (max-width: 768px) {
    .diagrams-grid {
        grid-template-columns: 1fr; /* 改为单列 */
        gap: 1.5rem;
    }
    
    .diagram-item {
        padding: 1.5rem 1rem;
    }
    
    .diagram-title {
        font-size: 1.125rem;
    }
    
    /* 层级图表优化 */
    .layer-visualization {
        flex-direction: column;
        gap: 1rem;
    }
    
    .layer-details {
        gap: 0.5rem;
    }
    
    .layer-info {
        padding: 0.75rem;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .layer-connector {
        display: none; /* 隐藏连接线 */
    }
    
    .layer-name {
        font-size: 0.9rem;
    }
    
    .layer-description {
        font-size: 0.8rem;
    }
    
    /* 安全功能图优化 */
    .security-visualization {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .id-card-outline {
        width: 200px;
        height: 125px;
        align-self: center;
    }
    
    .security-features-list {
        gap: 0.5rem;
    }
    
    .security-feature-item {
        padding: 0.75rem;
        gap: 0.75rem;
    }
    
    .feature-icon {
        width: 2rem;
        height: 2rem;
        font-size: 1rem;
    }
    
    .feature-name {
        font-size: 0.9rem;
    }
    
    .feature-description {
        font-size: 0.8rem;
    }
}

@media (max-width: 768px) {
    .download-options {
        grid-template-columns: 1fr; /* 改为单列 */
        gap: 1rem;
    }
    
    .download-btn {
        padding: 1rem;
        gap: 0.75rem;
    }
    
    .download-icon {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1.25rem;
    }
    
    .download-format {
        font-size: 0.9rem;
    }
    
    .download-size {
        font-size: 0.75rem;
    }
}

@media (max-width: 768px) {
    .certifications-grid {
        grid-template-columns: 1fr; /* 改为单列 */
        gap: 1rem;
    }
    
    .certification-item {
        padding: 1rem;
        gap: 0.75rem;
    }
    
    .cert-icon {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1.125rem;
    }
    
    .cert-name {
        font-size: 0.9rem;
    }
    
    .cert-description {
        font-size: 0.8rem;
    }
}

@media (max-width: 768px) {
    /* 标题和副标题优化 */
    .section-title {
        font-size: 1.5rem;
    }
    
    .section-subtitle {
        font-size: 0.9rem;
    }
    
    .chart-title,
    .diagrams-title,
    .download-title,
    .compliance-title {
        font-size: 1.25rem;
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    
    .chart-subtitle,
    .diagrams-subtitle,
    .download-subtitle,
    .compliance-subtitle {
        font-size: 0.85rem;
        text-align: center;
    }
    
    /* 间距优化 */
    .comparison-chart,
    .technical-diagrams,
    .download-specs,
    .compliance-certifications {
        padding: 1.5rem 1rem;
        margin-bottom: 2rem;
    }
}

@media (max-width: 480px) {
    /* 极小屏幕优化 */
    .product-specifications-container {
        padding: 0;
    }
    
    .spec-category {
        border-radius: var(--radius-md);
    }
    
    .specs-table {
        padding: 0.75rem;
    }
    
    .section-title {
        font-size: 1.25rem;
    }
    
    .thickness-badge {
        flex-direction: column;
        gap: 0.25rem;
        padding: 0.75rem 1rem;
    }
}
/* 登录模态框样式 */
/* Premium Login Modal Styles */
.premium-modal-dialog {
    max-width: 440px;
    margin: 1rem auto;
}

.premium-modal-content {
    border: none;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
    background: var(--bg-primary);
}

.premium-modal-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    padding: 2rem 2rem 1.5rem;
    position: relative;
}

.premium-modal-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.modal-title-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
    z-index: 2;
}

.modal-icon {
    width: 3.5rem;
    height: 3.5rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    backdrop-filter: blur(10px);
}

.modal-title-text .modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.modal-subtitle {
    font-size: 0.875rem;
    opacity: 0.9;
    margin: 0;
}

.premium-btn-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    width: 2.75rem;
    height: 2.75rem;
    color: white;
    font-size: 1.125rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
}

.premium-btn-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.premium-modal-body {
    padding: 2rem;
}

.premium-form-group {
    margin-bottom: 1.5rem;
}

.premium-form-label {
    display: flex;
    align-items: center;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.premium-input-container {
    position: relative;
}

.premium-form-control {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    transition: var(--transition-smooth);
    background: var(--bg-primary);
}

.premium-form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.premium-form-control.is-invalid {
    border-color: var(--error-color);
}

.premium-form-control.is-valid {
    border-color: var(--success-color);
}

.premium-password-toggle {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    transition: var(--transition-smooth);
}

.premium-password-toggle:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.premium-form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.premium-checkbox-container {
    display: flex;
    align-items: center;
}

.premium-checkbox {
    display: none;
}

.premium-checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.premium-checkbox-custom {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid var(--border-medium);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.premium-checkbox:checked + .premium-checkbox-label .premium-checkbox-custom {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.premium-forgot-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition-smooth);
}

.premium-forgot-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.premium-login-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.premium-login-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.premium-login-btn.loading .btn-content {
    opacity: 0;
}

.premium-login-btn .btn-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: none;
    align-items: center;
    gap: 0.75rem;
}

.premium-login-btn.loading .btn-loading {
    display: flex;
}

.premium-divider {
    text-align: center;
    position: relative;
    margin: 1.5rem 0;
}

.premium-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border-light);
}

.divider-text {
    background: var(--bg-primary);
    padding: 0 1rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    position: relative;
}

.premium-register-section {
    text-align: center;
}

.register-text {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.premium-register-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-smooth);
}

.premium-register-btn:hover {
    background: var(--primary-color);
    color: white;
    text-decoration: none;
}

.premium-modal-footer {
    background: var(--bg-secondary);
    border: none;
    padding: 1.5rem 2rem;
}

.footer-security {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.footer-features {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* 移动端优化 */
@media (max-width: 768px) {
    .premium-modal-dialog {
        margin: 0.5rem;
        max-width: none;
    }
    
    .premium-modal-header,
    .premium-modal-body {
        padding: 1.5rem;
    }
    
    .premium-form-options {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .footer-features {
        flex-direction: column;
        gap: 0.75rem;
    }
}