/* --- Base Variables & Reset --- */
:root {
    --primary-navy: #0C3D5A;
    --primary-navy-dark: #072538;
    --accent-teal: #2CA1C0;
    --accent-teal-hover: #22849e;
    --text-dark: #333333;
    --text-light: #666666;
    --bg-light: #F8F9FA;
    --white: #FFFFFF;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--white);
}

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

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* --- Typography --- */
h1, h2, h3 {
    color: var(--primary-navy);
    margin-bottom: 1rem;
}

p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 10px 24px;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
}

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

.btn-primary:hover {
    background-color: var(--accent-teal-hover);
    border-color: var(--accent-teal-hover);
    color: var(--white);
}

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

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

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

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

.text-link {
    color: var(--accent-teal);
    font-weight: bold;
}

.text-link:hover {
    text-decoration: underline;
}

/* --- Navigation --- */
header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

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

.nav-links a {
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* --- Hero Section --- */
.hero {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--white) 0%, var(--bg-light) 100%);
    text-align: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    max-width: 800px;
    margin: 0 auto 20px;
}

.hero-content p {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 40px;
}

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

/* --- Products Section --- */
.products-section {
    padding: 80px 0;
}

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

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

.product-card {
    background-color: var(--white);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
    border-top: 4px solid var(--accent-teal);
}

.product-card:hover {
    transform: translateY(-5px);
}

.product-card.stealth {
    border-top-color: var(--primary-navy);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

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

footer h4, footer a {
    color: var(--white);
}

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

.footer-brand p {
    color: rgba(255,255,255,0.7);
    margin-top: 15px;
}

.footer-links ul {
    list-style: none;
    margin-top: 15px;
}

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

.footer-links a {
    color: rgba(255,255,255,0.7);
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    color: rgba(255,255,255,0.5);
    font-size: 0.9rem;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .nav-links {
        display: none; /* Add a hamburger menu later for mobile */
    }
    .hero-content h1 {
        font-size: 2.5rem;
    }
    .footer-content {
        grid-template-columns: 1fr;
    }
}