/* Main CSS with all imports */
@import url('navigation.css');
@import url('chat.css');

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

:root {
    --primary-blue: #001a4f;
    --secondary-blue: #0056b3;
    --accent-blue: #007bff;
    --dark-gray: #333333;
    --medium-gray: #666666;
    --light-gray: #f5f5f5;
    --white: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Noto Sans', Helvetica, Tahoma, Arial, 'PingFang SC', 'Hiragino Sans GB', 'Heiti SC', 'Microsoft YaHei', 'WenQuanYi Micro Hei', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--white);
}

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

a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--secondary-blue);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary-blue);
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

p {
    margin-bottom: 1rem;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 30px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

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

.btn-primary:hover {
    background-color: var(--secondary-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: var(--white);
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-secondary:hover {
    background-color: var(--primary-blue);
    color: var(--white);
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background-color: var(--primary-blue);
    color: var(--white);
}

/* Top Bar */
.top-bar {
    background-color: var(--light-gray);
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 30px;
}

.language-selector {
    display: flex;
    gap: 10px;
}

.language-selector a {
    font-weight: 600;
    color: var(--medium-gray);
    padding: 4px 8px;
    border-radius: 4px;
}

.language-selector a.active {
    color: var(--primary-blue);
    background-color: var(--white);
}

.top-links {
    display: flex;
    gap: 20px;
}

.top-links a {
    font-size: 14px;
    color: var(--medium-gray);
}

.top-links a:hover {
    color: var(--primary-blue);
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    background-color: var(--white);
    border-radius: 50%;
    color: var(--primary-blue);
    font-size: 16px;
    border: 1px solid var(--border-color);
}

.social-icon:hover {
    background-color: var(--primary-blue);
    color: var(--white);
    transform: translateY(-2px);
}

/* Header */
.header {
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--white);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

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

.logo img {
    height: 40px;
    width: auto;
}

.company-tag img {
    height: 60px;
    width: auto;
}

/* Hero Section */
.hero {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    position: relative;
    overflow: hidden;
}

.hero h1 {
    text-align: center;
    margin-bottom: 40px;
    color: var(--primary-blue);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.stat-item {
    text-align: center;
    padding: 30px 20px;
    background: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.stat-icon {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

.stat-item h4 {
    color: var(--primary-blue);
    margin-bottom: 10px;
}

.stat-item p {
    color: var(--medium-gray);
    font-size: 14px;
}

/* Industries Section */
.industries {
    padding: 80px 0;
    background-color: var(--white);
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.industry-card {
    display: block;
    padding: 30px 20px;
    text-align: center;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: var(--transition);
}

.industry-card:hover {
    border-color: var(--primary-blue);
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.industry-icon {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

.industry-card h4 {
    color: var(--primary-blue);
    margin-bottom: 10px;
}

.industry-card p {
    color: var(--medium-gray);
    font-size: 14px;
}

/* Global Projects Section */
.global-projects {
    padding: 80px 0;
    background-color: var(--light-gray);
}

.countries-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
}

.country {
    padding: 8px 16px;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 14px;
    color: var(--dark-gray);
    transition: var(--transition);
}

.country:hover {
    background: var(--primary-blue);
    color: var(--white);
    border-color: var(--primary-blue);
}

.world-map {
    text-align: center;
    padding: 40px;
    background: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.map-placeholder {
    font-size: 4rem;
    color: var(--light-gray);
    margin-bottom: 20px;
}

.map-placeholder p {
    color: var(--medium-gray);
    font-size: 18px;
}

/* Products Section */
.products {
    padding: 80px 0;
    background-color: var(--white);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.product-card {
    display: block;
    padding: 30px;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: var(--transition);
}

.product-card:hover {
    border-color: var(--primary-blue);
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.product-image {
    font-size: 3rem;
    color: var(--primary-blue);
    margin-bottom: 20px;
    text-align: center;
}

.product-card h4 {
    color: var(--primary-blue);
    margin-bottom: 15px;
}

.product-card p {
    color: var(--medium-gray);
    font-size: 14px;
    margin-bottom: 20px;
    line-height: 1.6;
}

.learn-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 14px;
}

.learn-more i {
    transition: var(--transition);
}

.product-card:hover .learn-more i {
    transform: translateX(5px);
}

/* Footer */
.footer {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    color: var(--white);
    margin-bottom: 20px;
    font-size: 18px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    line-height: 1.8;
}

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

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

.footer-section ul a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
}

.footer-section ul a:hover {
    color: var(--white);
}

.footer-section .fa {
    margin-right: 10px;
    width: 20px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social .social-icon {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border: none;
}

.footer-social .social-icon:hover {
    background-color: var(--white);
    color: var(--primary-blue);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

.footer-links {
    margin-top: 10px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    margin: 0 10px;
}

.footer-links a:hover {
    color: var(--white);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .container {
        max-width: 100%;
        padding: 0 30px;
    }
}

@media (max-width: 992px) {
    .header-content {
        flex-direction: column;
        gap: 20px;
    }
    
    .hero-stats,
    .industries-grid,
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .top-bar .container {
        flex-direction: column;
        gap: 10px;
    }
    
    .top-bar-left {
        flex-direction: column;
        gap: 10px;
    }
    
    .top-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-stats,
    .industries-grid,
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .countries-list {
        gap: 10px;
    }
    
    .country {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    h1 {
        font-size: 1.75rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .hero,
    .industries,
    .global-projects,
    .products {
        padding: 40px 0;
    }
    
    .stat-item,
    .industry-card,
    .product-card {
        padding: 20px 15px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }
}