/* Variables */
:root {
    --bg-light: #ffffff;
    --bg-section: #f4f4f4; /* Light grey for alternating sections */
    --text-main: #333333;
    --text-muted: #666666;
    --primary: #2c3e50; /* Dark Blue/Grey (Corporate) */
    --accent: #2980b9; /* Bright Blue (Action) */
    --container: 1200px;
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
}

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

body {
    background-color: var(--bg-light);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--primary);
    font-weight: 700;
    letter-spacing: -0.5px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s;
}

ul {
    list-style: none;
}

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 100px 0;
}

.bg-alt {
    background-color: var(--bg-section);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    background: var(--accent);
    color: white;
    font-family: var(--font-heading);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    border: none;
    border-radius: 4px; /* Slightly rounded */
    cursor: pointer;
    transition: background 0.3s ease;
}

.btn:hover {
    background: #1c6ea4;
}

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

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

/* Header */
header {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    height: 80px;
    display: flex;
    align-items: center;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo img {
    height: 50px; /* Adjust based on logo aspect ratio */
    display: block;
}

nav {
    display: flex;
    gap: 40px;
}

.nav-link {
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--text-main);
    text-transform: uppercase;
    font-size: 0.85rem;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: 0.3s;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link:hover {
    color: var(--accent);
}

.lang-toggle {
    background: transparent;
    border: 1px solid #ddd;
    padding: 5px 15px;
    border-radius: 20px;
    cursor: pointer;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--text-muted);
    transition: 0.3s;
}

.lang-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* Hero */
.hero {
    height: 100vh;
    /* Corporate / Logistics / Global Trade Neutral Image */
    background: linear-gradient(rgba(44, 62, 80, 0.7), rgba(44, 62, 80, 0.7)), url('https://images.unsplash.com/photo-1454165804606-c3d57bc86b40?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    margin-top: 0; /* Header is fixed, but we might need padding-top on body or hero margin */
}

.hero-content h1 {
    color: white;
    font-size: 3.5rem;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
    font-weight: 300;
}

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

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 15px;
}

.about-text h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--accent);
}

.about-text p {
    color: var(--text-muted);
    margin-bottom: 20px;
}

.about-img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* Services */
.services h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: white;
    padding: 40px 30px;
    text-align: center;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: 0.3s;
    border-bottom: 3px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    border-bottom-color: var(--accent);
}

.service-icon {
    font-size: 3rem;
    color: var(--accent);
    margin-bottom: 25px;
}

.service-card h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.service-card p {
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--bg-section);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-details h4 {
    font-size: 0.9rem;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 5px;
}

.contact-details p {
    font-size: 1.1rem;
    font-weight: 600;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.form-group {
    margin-bottom: 20px;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
footer {
    background: var(--primary);
    color: white;
    padding: 60px 0 20px;
    text-align: center;
}

.footer-content {
    margin-bottom: 40px;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    display: inline-block;
}

.copyright {
    color: rgba(255,255,255,0.4);
    font-size: 0.85rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
}

/* Responsive */
@media (max-width: 900px) {
    .about-grid, .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 600px) {
    .header-inner {
        flex-direction: column;
        gap: 15px;
    }
    nav {
        gap: 20px;
        flex-wrap: wrap;
        justify-content: center;
    }
}