:root {
    --primary-color: #0a2b4b; /* Deep Blue */
    --secondary-color: #e6e6e6; /* Light Gray */
    --accent-color: #d9534f; /* Muted Red */
    --text-color: #333;
    --light-text-color: #f4f4f4;
    --font-family: 'Helvetica Neue', Arial, sans-serif;
}

body {
    font-family: var(--font-family);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
}

/* --- Navigation Bar --- */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--primary-color);
    color: var(--light-text-color);
    padding: 1rem 2rem;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-sizing: border-box;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

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

.nav-links li {
    padding: 0 1rem;
}

.nav-links a {
    color: var(--light-text-color);
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease-in-out;
}

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

/* --- Hero Section --- */
.hero {
    background: linear-gradient(rgba(10, 43, 75, 0.8), rgba(10, 43, 75, 0.8)), url('https://images.unsplash.com/photo-1518655048521-f130df041f66?q=80&w=2070') center/cover no-repeat;
    color: var(--light-text-color);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 2rem;
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

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

/* --- Buttons --- */
.btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s;
    margin: 0.5rem;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #fff;
}

.btn-primary:hover {
    background-color: #c9302c;
}

.btn-secondary {
    background-color: transparent;
    color: #fff;
    border: 2px solid #fff;
}

.btn-secondary:hover {
    background-color: #fff;
    color: var(--primary-color);
}

/* --- Content Sections --- */
.content-section {
    padding: 4rem 2rem;
    text-align: center;
}

.content-section h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

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

/* --- Card Layout --- */
.card-container {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.card {
    background: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    max-width: 300px;
    text-align: left;
}

.card h3 {
    color: var(--primary-color);
    margin-top: 0;
}

/* --- Split Section --- */
.split-section {
    display: flex;
    gap: 2rem;
    text-align: left;
}

.split-content {
    flex: 1;
    background-color: #fff;
    padding: 2rem;
    border-radius: 8px;
}

/* --- Form --- */
.subscribe-form {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.subscribe-form input {
    padding: 0.8rem;
    width: 300px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

/* --- Footer --- */
footer {
    background-color: var(--primary-color);
    color: var(--light-text-color);
    text-align: center;
    padding: 2rem;
}

footer a {
    color: var(--light-text-color);
    text-decoration: none;
}
footer a:hover {
    text-decoration: underline;
}