/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1e3a5f;
    --secondary-color: #c9a227;
    --accent-color: #2980b9;
    --text-dark: #2c3e50;
    --text-light: #5d6d7e;
    --text-muted: #7f8c8d;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e6ed;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

img {
    max-width: 100%;
    height: auto;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-white);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

/* Logo Styles */
.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: var(--transition);
}

.logo img {
    height: 55px;
    width: auto;
    max-width: 200px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.logo h1 {
    display: none; /* Hidden when using image logo */
}

.logo h1 span {
    display: none; /* Hidden when using image logo */
}

/* Logo hover effect */
.logo:hover {
    opacity: 0.85;
    transform: translateY(-1px);
}

/* Responsive Logo */
@media (max-width: 992px) {
    .logo img {
        height: 48px;
        max-width: 180px;
    }
}

@media (max-width: 768px) {
    .logo img {
        height: 42px;
        max-width: 150px;
    }
}

@media (max-width: 480px) {
    .logo img {
        height: 36px;
        max-width: 130px;
    }
}

.nav {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition);
    position: relative;
    padding: 5px 0;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: var(--transition);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-white);
    min-width: 260px;
    box-shadow: var(--shadow-lg);
    border-radius: 10px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: var(--transition);
    padding: 12px 0;
    margin-top: 8px;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    list-style: none;
}

.dropdown-menu a {
    display: block;
    padding: 12px 24px;
    color: var(--text-dark);
    text-decoration: none;
    transition: var(--transition);
    font-size: 14px;
}

.dropdown-menu a:hover {
    background: var(--bg-light);
    color: var(--primary-color);
}

/* Highlighted item in dropdown (Seamless Pipe) */
.dropdown-menu a.highlight-item {
    font-weight: 600;
    color: var(--secondary-color);
    background: linear-gradient(90deg, rgba(197, 48, 48, 0.08) 0%, transparent 100%);
    border-left: 3px solid var(--secondary-color);
    padding-left: 21px;
}

.dropdown-menu a.highlight-item:hover {
    background: linear-gradient(90deg, rgba(197, 48, 48, 0.15) 0%, rgba(197, 48, 48, 0.05) 100%);
    color: var(--secondary-color);
}

/* Sub-dropdown */
.dropdown-submenu {
    position: relative;
}

.dropdown-submenu-content {
    position: absolute;
    top: 0;
    left: 100%;
    background: var(--bg-white);
    min-width: 220px;
    box-shadow: var(--shadow-lg);
    border-radius: 10px;
    opacity: 0;
    visibility: hidden;
    transform: translateX(15px);
    transition: var(--transition);
    padding: 12px 0;
    margin-left: 5px;
}

.dropdown-submenu:hover .dropdown-submenu-content {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

/* Language Switcher */
.language-switcher {
    display: flex;
    gap: 8px;
}

.lang-btn {
    padding: 8px 16px;
    border: 2px solid var(--border-color);
    background: transparent;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 13px;
    transition: var(--transition);
    color: var(--text-dark);
}

.lang-btn:hover,
.lang-btn.active {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: var(--bg-white);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}

.mobile-menu-toggle span {
    width: 28px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 3px;
    transition: var(--transition);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Hero Section */
.hero {
    margin-top: 70px;
    min-height: 80vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, #2c5282 100%);
    position: relative;
    display: flex;
    align-items: center;
    padding: 60px 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--bg-white);
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 40px;
    font-weight: 300;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 14px 36px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    border: 2px solid transparent;
    text-align: center;
}

.btn-primary {
    background: var(--secondary-color);
    color: var(--bg-white);
}

.btn-primary:hover {
    background: #9b2c2c;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    border-color: var(--bg-white);
    color: var(--bg-white);
}

.btn-secondary:hover {
    background: var(--bg-white);
    color: var(--primary-color);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.scroll-indicator span {
    display: block;
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 25px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 10px;
    background: var(--bg-white);
    border-radius: 3px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0%, 100% { opacity: 1; top: 10px; }
    50% { opacity: 0.5; top: 25px; }
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-header p {
    font-size: 16px;
    color: var(--text-muted);
}

/* Features Section */
.features {
    background: var(--bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.feature-card {
    background: var(--bg-white);
    padding: 35px 25px;
    border-radius: 12px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 42px;
    margin-bottom: 18px;
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 12px;
}

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

/* Products Preview */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 25px;
}

.product-card {
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.product-image {
    height: 180px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #2c5282 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-img {
    color: var(--bg-white);
    font-weight: 600;
    font-size: 16px;
    text-align: center;
    padding: 20px;
}

.product-card h3 {
    padding: 22px 22px 8px;
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
}

.product-card p {
    padding: 0 22px 22px;
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.6;
}

.section-cta {
    text-align: center;
    margin-top: 40px;
}

/* Stats Section */
.stats {
    background: linear-gradient(135deg, var(--primary-color) 0%, #2c5282 100%);
    color: var(--bg-white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 16px;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: var(--bg-white);
    padding: 60px 0 25px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h3 {
    font-size: 22px;
    margin-bottom: 18px;
    color: var(--bg-white);
}

.footer-col h4 {
    font-size: 16px;
    margin-bottom: 18px;
    color: var(--bg-white);
}

.footer-col p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    font-size: 14px;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
    font-size: 14px;
}

.footer-col ul li a:hover {
    color: var(--bg-white);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 25px;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
}

/* Page Header (for inner pages) */
.page-header {
    margin-top: 70px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #2c5282 100%);
    padding: 60px 0;
    text-align: center;
    color: var(--bg-white);
}

.page-header h1 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 12px;
}

.page-header p {
    font-size: 16px;
    opacity: 0.9;
}

/* About Page */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text h2 {
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 22px;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 18px;
    font-size: 15px;
    line-height: 1.8;
}

.about-image {
    height: 380px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #2c5282 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 20px;
    font-weight: 600;
    text-align: center;
}

/* About Section */
.about-section {
    background: var(--bg-white);
}

.mission-vision {
    background: var(--bg-light);
}

/* Products Section */
.products-section {
    background: var(--bg-white);
}

.product-category {
    margin-bottom: 70px;
}

.category-header {
    margin-bottom: 35px;
    padding-bottom: 18px;
    border-bottom: 2px solid var(--border-color);
}

.category-header h2 {
    font-size: 28px;
    color: var(--primary-color);
    font-weight: 700;
}

.sub-category {
    margin: 45px 0;
    padding-left: 25px;
    border-left: 4px solid var(--secondary-color);
}

.sub-category h3 {
    font-size: 22px;
    color: var(--text-dark);
    margin-bottom: 25px;
    font-weight: 600;
}

/* Projects Section */
.projects-section {
    background: var(--bg-light);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
}

.project-card {
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.project-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #2c5282 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.project-content {
    padding: 25px;
}

.project-content h3 {
    font-size: 18px;
    color: var(--primary-color);
    margin-bottom: 8px;
    font-weight: 600;
}

.project-location {
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 12px;
}

.project-description {
    color: var(--text-light);
    margin-bottom: 12px;
    line-height: 1.7;
    font-size: 14px;
}

.project-year {
    color: var(--secondary-color);
    font-weight: 600;
    font-size: 13px;
}

/* Contact Section */
.contact-section {
    background: var(--bg-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
}

.contact-info h2,
.contact-form-wrapper h2 {
    font-size: 28px;
    color: var(--primary-color);
    margin-bottom: 18px;
    font-weight: 700;
}

.contact-intro {
    color: var(--text-light);
    margin-bottom: 35px;
    font-size: 15px;
    line-height: 1.8;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-item {
    display: flex;
    gap: 18px;
    align-items: flex-start;
}

.contact-icon {
    font-size: 26px;
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 15px;
    color: var(--primary-color);
    margin-bottom: 5px;
    font-weight: 600;
}

.contact-text p {
    color: var(--text-light);
    line-height: 1.7;
    font-size: 14px;
}

/* Contact Form */
.contact-form {
    background: var(--bg-light);
    padding: 35px;
    border-radius: 12px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    margin-bottom: 18px;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
    background: var(--bg-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 110px;
}

.contact-form .btn-primary {
    width: 100%;
    padding: 14px;
    font-size: 15px;
    cursor: pointer;
    border: none;
}

/* ========== RESPONSIVE DESIGN ========== */

/* Tablet and below */
@media (max-width: 992px) {
    /* Header & Navigation */
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 85%;
        max-width: 320px;
        height: 100vh;
        background: var(--bg-white);
        flex-direction: column;
        padding: 80px 30px 30px;
        box-shadow: -5px 0 25px rgba(0,0,0,0.1);
        transition: right 0.3s ease;
        align-items: flex-start;
        gap: 25px;
    }
    
    .nav.active {
        right: 0;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 0;
        width: 100%;
        align-items: flex-start;
    }
    
    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-menu a {
        display: block;
        padding: 15px 0;
        font-size: 16px;
    }
    
    /* Mobile Dropdowns */
    .dropdown-menu,
    .dropdown-submenu-content {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding: 0 0 0 20px;
        margin-top: 0;
        border-radius: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        min-width: auto;
    }
    
    .dropdown-menu.active,
    .dropdown-submenu-content.active {
        max-height: 1000px;
    }
    
    .dropdown-menu li,
    .dropdown-submenu-content li {
        border-bottom: none;
    }
    
    .dropdown-menu a,
    .dropdown-submenu-content a {
        padding: 10px 0;
        font-size: 14px;
        color: var(--text-light);
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .language-switcher {
        width: 100%;
        justify-content: flex-start;
    }
    
    /* Hero */
    .hero-title {
        font-size: 38px;
    }
    
    .hero {
        min-height: 70vh;
        padding: 50px 0;
    }
    
    /* Layouts */
    .about-content,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .about-image {
        order: -1;
        height: 300px;
    }
    
    /* Stats */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .stat-number {
        font-size: 42px;
    }
    
    /* Footer */
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 35px;
    }
    
    /* Sections */
    section {
        padding: 60px 0;
    }
    
    .section-header h2 {
        font-size: 30px;
    }
    
    .page-header {
        padding: 50px 0;
    }
    
    .page-header h1 {
        font-size: 34px;
    }
    
    /* Projects */
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

/* Mobile phones */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
    
    .header-content {
        padding: 12px 0;
    }
    
    .logo h1 {
        font-size: 20px;
    }
    
    /* Hero */
    .hero-title {
        font-size: 30px;
    }
    
    .hero-subtitle {
        font-size: 15px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        width: 100%;
        padding: 14px 24px;
    }
    
    /* Stats */
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .stat-number {
        font-size: 38px;
    }
    
    .stat-label {
        font-size: 14px;
    }
    
    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    /* Sections */
    section {
        padding: 50px 0;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    .section-header h2 {
        font-size: 26px;
    }
    
    .section-header p {
        font-size: 14px;
    }
    
    .page-header {
        padding: 40px 0;
    }
    
    .page-header h1 {
        font-size: 28px;
    }
    
    .page-header p {
        font-size: 14px;
    }
    
    /* Products */
    .product-category {
        margin-bottom: 50px;
    }
    
    .category-header h2 {
        font-size: 24px;
    }
    
    .sub-category {
        padding-left: 15px;
    }
    
    .sub-category h3 {
        font-size: 20px;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    /* Features */
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    /* Contact form */
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        padding: 25px 20px;
    }
    
    .contact-info h2,
    .contact-form-wrapper h2 {
        font-size: 24px;
    }
    
    /* Scroll indicator */
    .scroll-indicator {
        display: none;
    }
}

/* Small mobile phones */
@media (max-width: 480px) {
    .hero-title {
        font-size: 26px;
    }
    
    .hero-subtitle {
        font-size: 14px;
    }
    
    .feature-card {
        padding: 28px 20px;
    }
    
    .product-image {
        height: 160px;
    }
    
    .project-image {
        height: 180px;
    }
    
    .about-image {
        height: 250px;
    }
}

/* Landscape mobile */
@media (max-height: 600px) and (orientation: landscape) {
    .hero {
        min-height: 100vh;
    }
}

/* About Page Image Styles */
.about-section {
    padding: 80px 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 25px;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-image {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

.about-image:hover img {
    transform: scale(1.05);
}

/* Responsive About Section */
@media (max-width: 992px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-image {
        order: -1;
    }
    
    .about-text h2 {
        font-size: 30px;
    }
}

@media (max-width: 768px) {
    .about-section {
        padding: 60px 0;
    }
    
    .about-text h2 {
        font-size: 26px;
    }
    
    .about-text p {
        font-size: 15px;
    }
}

/* Seamless Pipe Product Page Styles */
.product-detail {
    padding: 80px 0;
    background: var(--bg-light);
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.product-image-section {
    position: relative;
}

.main-product-image {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: var(--bg-white);
}

.main-product-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

.main-product-image:hover img {
    transform: scale(1.05);
}

.product-info-section {
    padding: 20px;
}

.product-info-section h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.product-intro {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 30px;
}

.product-features {
    margin-bottom: 30px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.feature-item:last-child {
    border-bottom: none;
}

.feature-icon {
    width: 24px;
    height: 24px;
    background: var(--secondary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: bold;
}

.feature-item span:last-child {
    font-size: 15px;
    color: var(--text-dark);
    font-weight: 500;
}

.product-cta {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.product-specs {
    padding: 80px 0;
    background: var(--bg-white);
}

.specs-table-container {
    max-width: 900px;
    margin: 0 auto;
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

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

.specs-table th,
.specs-table td {
    padding: 18px 24px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.specs-table th {
    background: var(--primary-color);
    color: white;
    font-weight: 600;
    width: 30%;
    font-size: 15px;
}

.specs-table td {
    color: var(--text-dark);
    font-size: 15px;
}

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

.specs-table tr:hover {
    background: var(--bg-light);
}

.material-standards {
    padding: 80px 0;
    background: var(--bg-light);
}

.standards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.standard-card {
    background: var(--bg-white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.standard-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--secondary-color);
}

.standard-card ul {
    list-style: none;
}

.standard-card li {
    padding: 8px 0;
    color: var(--text-light);
    font-size: 14px;
    border-bottom: 1px solid var(--border-color);
}

.standard-card li:last-child {
    border-bottom: none;
}

.applications {
    padding: 80px 0;
    background: var(--bg-white);
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.application-card {
    background: var(--bg-light);
    padding: 35px;
    border-radius: 12px;
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
}

.application-card:hover {
    border-color: var(--secondary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.application-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.application-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 12px;
}

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

.advantages {
    padding: 80px 0;
    background: var(--bg-light);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.advantage-card {
    background: var(--bg-white);
    padding: 35px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

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

.advantage-number {
    position: absolute;
    top: -20px;
    right: -10px;
    font-size: 80px;
    font-weight: 700;
    color: rgba(30, 58, 95, 0.08);
    line-height: 1;
}

.advantage-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}

.advantage-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    text-align: center;
}

.cta-content h2 {
    font-size: 36px;
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto 30px;
    line-height: 1.6;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Responsive Seamless Pipe Page */
@media (max-width: 992px) {
    .product-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .product-info-section h2 {
        font-size: 30px;
    }
}

@media (max-width: 768px) {
    .product-detail,
    .product-specs,
    .material-standards,
    .applications,
    .advantages {
        padding: 60px 0;
    }
    
    .product-info-section h2 {
        font-size: 26px;
    }
    
    .specs-table th,
    .specs-table td {
        padding: 14px 16px;
        font-size: 14px;
    }
    
    .cta-content h2 {
        font-size: 28px;
    }
    
    .cta-content p {
        font-size: 16px;
    }
    
    .product-cta {
        flex-direction: column;
    }
    
    .product-cta .btn {
        width: 100%;
        text-align: center;
    }
}

/* ERW Product Full Section on Products Page */
.product-full-section {
    padding: 40px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
    align-items: center;
}

.product-image-wrapper {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.product-image-wrapper img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

.product-image-wrapper:hover img {
    transform: scale(1.03);
}

.product-detail-content {
    padding: 20px 0;
}

.product-detail-content h3 {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.product-detail-content > p {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 25px;
}

.specs-preview {
    background: var(--bg-light);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 25px;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

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

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

.spec-value {
    color: var(--accent-color);
    font-weight: 500;
}

/* Responsive ERW Section */
@media (max-width: 992px) {
    .product-detail-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .product-detail-content h3 {
        font-size: 28px;
    }
}

@media (max-width: 768px) {
    .product-full-section {
        padding: 30px 0;
    }
    
    .product-detail-content h3 {
        font-size: 24px;
    }
    
    .specs-preview {
        padding: 15px;
    }
    
    .spec-item {
        flex-direction: column;
        gap: 5px;
    }
}