:root {
    --primary-color: #003366;
    /* Dark Blue */
    --secondary-color: #f4f4f4;
    /* Light Grey */
    --accent-color: #0055a5;
    /* Lighter Blue */
    --text-color: #333;
    --white: #ffffff;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
}

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

/* Header */
.header {
    background-color: var(--white);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 1px;
}

.logo-sub {
    font-size: 12px;
    color: #666;
    letter-spacing: 2px;
}

.nav ul {
    display: flex;
    list-style: none;
}

.nav ul li {
    margin-left: 30px;
}

.nav ul li a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
}

.nav ul li a:hover {
    color: var(--primary-color);
}

.lang-switcher button {
    background: none;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 5px 10px;
    cursor: pointer;
    margin-left: 10px;
    border-radius: 4px;
    font-size: 14px;
    transition: var(--transition);
}

.lang-switcher button.active,
.lang-switcher button:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0, 51, 102, 0.8), rgba(0, 51, 102, 0.6)), url('https://images.unsplash.com/photo-1558769132-cb1aea458c5e?ixlib=rb-1.2.1&auto=format&fit=crop&w=1950&q=80') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    padding-top: 80px;
}

.hero-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
    animation: fadeInDown 1s ease-out;
}

.hero-content p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.5s both;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--white);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: var(--transition);
    animation: fadeInUp 1s ease-out 1s both;
}

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

/* Sections */
.section {
    padding: 80px 0;
}

.section h2 {
    text-align: center;
    font-size: 36px;
    color: var(--primary-color);
    margin-bottom: 50px;
    position: relative;
}

.section h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: var(--accent-color);
    margin: 15px auto 0;
}

/* About */
.about {
    background-color: var(--white);
}

.about-text {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 18px;
    color: #555;
}

/* Products */
.products {
    background-color: var(--secondary-color);
}

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

.product-card {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.product-icon {
    font-size: 48px;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.product-card h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

/* Contact */
.contact-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 50px;
    margin-top: 30px;
    text-align: center;
}

.contact-item h4 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 20px;
}

.contact-item a {
    color: var(--accent-color);
    text-decoration: none;
}

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 20px 0;
    text-align: center;
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        height: auto;
        padding: 15px 20px;
    }

    .nav {
        margin: 15px 0;
    }

    .nav ul {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }

    .nav ul li {
        margin: 0;
    }

    .hero-content h1 {
        font-size: 32px;
    }
}