:root {
    --primary-color: #0a2b4c; /* Deep Blue */
    --secondary-color: #f2f2f2; /* Light Gray */
    --accent-color: #4a90e2; /* Bright Blue */
    --text-color: #333;
    --white-color: #fff;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    color: var(--text-color);
    background-color: var(--white-color);
}

.container {
    max-width: 1100px;
    margin: auto;
    padding: 0 20px;
    overflow: hidden;
}

/* Header & Navigation */
header {
    background-color: var(--white-color);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo a {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-links {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}

.nav-links li {
    margin-left: 25px;
}

.nav-links a {
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(rgba(10, 43, 76, 0.8), rgba(10, 43, 76, 0.8)), url('https://images.unsplash.com/photo-1579532537598-459ecdaf39cc?q=80&w=2070&auto=format&fit=crop') no-repeat center center/cover;
    color: var(--white-color);
    height: 60vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.hero-content h2 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--white-color);
    padding: 12px 25px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: #357abd;
}

/* Main Content Sections */
main section {
    padding: 4rem 0;
    border-bottom: 1px solid var(--secondary-color);
}

main section:last-child {
    border-bottom: none;
}

main h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 3rem;
}

/* Service Cards */
.service-cards {
    display: flex;
    justify-content: space-between;
    gap: 20px;
}

.card {
    background: var(--white-color);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    text-align: center;
    flex-basis: 31%;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}

.card h3 {
    color: var(--accent-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* Contact Info */
.contact-info {
    text-align: center;
    font-size: 1.1rem;
}

.contact-info p {
    margin: 0.5rem 0;
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--white-color);
    text-align: center;
    padding: 1.5rem 0;
}

/* Responsive */
@media (max-width: 768px) {
    header nav {
        flex-direction: column;
    }

    .nav-links {
        margin-top: 1rem;
    }

    .hero-content h2 {
        font-size: 2.2rem;
    }

    .service-cards {
        flex-direction: column;
    }
}