@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600&display=swap');

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
        Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    margin: 0;
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

header {
    background: #004080;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 0;
}

.logo {
    color: #fff;
    font-weight: 700;
    font-size: 1.5rem;
    text-decoration: none;
}

.nav-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    color: #cbd5e1;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.nav-links a:hover,
.nav-links a:focus {
    color: #fff;
}

.section {
    margin-bottom: 3rem;
    scroll-margin-top: 80px;
}


h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #004080;
}

h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #0073e6;
    border-bottom: 2px solid #cbd5e1;
    padding-bottom: 0.3rem;
}

ul {
    padding-left: 1.25rem;
    margin-top: 0;
}


a {
    color: #0073e6;
    text-decoration: none;
}

a:hover,
a:focus {
    text-decoration: underline;
}

footer {
    background: #004080;
    color: #cbd5e1;
    padding: 1rem 0;
    text-align: center;
    font-size: 0.9rem;
}

.highlight {
    font-weight: bold;
    color: #0056b3;
    background-color: #e0f0ff;
    padding: 2px 4px;
    border-radius: 3px;
    font-family: monospace;
}


@media (max-width: 600px) {
    .navbar .container {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .nav-links {
        width: 100%;
        justify-content: center;
        gap: 1rem;
        flex-wrap: wrap;
    }

    .navbar .logo {
        flex: 1 1 100%;
        text-align: center;
    }
}