/* --- Color Palette & Global Styles --- */
:root {
    --navy-blue: #0f2c4c;
    --navy-light: #1a4370;
    --charcoal: #2d3748;
    --text-light: #4a5568;
    --white: #ffffff;
    --off-white: #f7fafc;
    --accent: #2b6cb0;
}

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

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

h1, h2, h3, h4 {
    color: var(--navy-blue);
    line-height: 1.2;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
    font-size: 1.1rem;
}

a {
    text-decoration: none;
    color: var(--accent);
    transition: color 0.3s ease;
}

a:hover {
    color: var(--navy-light);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

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

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

.btn-secondary.dark-mode-btn {
    color: var(--navy-blue);
    border-color: var(--navy-blue);
}

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

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

/* --- 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 {
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 100px;
    padding: 15px 0;
}

.logo img {
    max-height: 60px;
    width: auto;
    display: block;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a, .dropbtn {
    color: var(--charcoal);
    font-weight: 500;
    font-size: 0.95rem;
    white-space: nowrap;
    cursor: pointer;
}

.nav-links a.active {
    color: var(--accent);
    border-bottom: 2px solid var(--accent);
    padding-bottom: 4px;
}

.nav-links a.nav-btn {
    color: var(--white);
    border-bottom: none;
    padding: 0.75rem 1.5rem;
}

/* --- Dropdown Menu --- */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: var(--white);
    min-width: 240px;
    box-shadow: 0px 8px 20px rgba(0,0,0,0.1);
    z-index: 1;
    border-radius: 6px;
    top: 100%;
    left: 0;
    padding: 0.5rem 0;
    border: 1px solid #e2e8f0;
}

.dropdown-content a {
    color: var(--charcoal);
    padding: 12px 20px;
    text-decoration: none;
    display: block;
    font-size: 0.9rem;
    border-bottom: none !important;
}

.dropdown-content a:hover {
    background-color: var(--off-white);
    color: var(--accent);
}

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown:hover .dropbtn {
    color: var(--accent);
}

/* --- Hero Section --- */
.hero {
    background-color: var(--navy-blue);
    color: var(--white);
    padding: 8rem 0;
    text-align: center;
}

.hero h1 {
    color: var(--white);
    font-size: 3.5rem;
    max-width: 800px;
    margin: 0 auto 1.5rem auto;
}

.hero p {
    color: #e2e8f0;
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto 2.5rem auto;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* --- Page Hero (Subpages) --- */
.page-hero {
    background-color: var(--off-white);
    padding: 6rem 0 4rem 0;
    border-bottom: 1px solid #e2e8f0;
    text-align: center;
}

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

.page-hero p {
    font-size: 1.25rem;
    max-width: 800px;
    margin: 0 auto;
}

/* --- Content Sections --- */
.content-section { padding: 6rem 0; }
.problem-section { background-color: var(--white); }
.capabilities-section { background-color: var(--off-white); }
.authority-section { background-color: var(--white); }

.content-block {
    max-width: 800px;
    margin: 0 auto;
}

.content-block h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 { font-size: 2.5rem; }

/* --- Two-Column Layouts --- */
.grid-2-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.highlight-box {
    background-color: var(--navy-blue);
    color: var(--white);
    padding: 3rem;
    border-radius: 8px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.highlight-box h2, .highlight-box h3 { color: var(--white); }
.highlight-box p { color: #e2e8f0; }

/* --- Lists --- */
.problem-list, .credentials-list {
    list-style: none;
    margin-top: 2rem;
}

.problem-list li, .credentials-list li {
    margin-bottom: 1.5rem;
    padding-left: 2.5rem;
    position: relative;
    color: var(--charcoal);
}

.problem-list li::before {
    content: "•";
    color: var(--navy-blue);
    font-size: 2rem;
    position: absolute;
    left: 0;
    top: -8px;
}

.credentials-list li::before {
    content: "✓";
    color: var(--accent);
    font-size: 1.25rem;
    font-weight: bold;
    position: absolute;
    left: 0;
    top: -2px;
}

.problem-list strong, .credentials-list strong { color: var(--navy-blue); }

.callout {
    margin-top: 3rem;
    padding: 1.5rem;
    background-color: var(--off-white);
    border-left: 4px solid var(--navy-blue);
    font-weight: 600;
    color: var(--charcoal);
    font-size: 1.1rem;
}

/* --- Cards Grid --- */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background-color: var(--white);
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
    border-top: 4px solid var(--navy-blue);
}

.card:hover { transform: translateY(-5px); }
.card h3 { font-size: 1.25rem; margin-bottom: 1rem; }
.card-link { font-weight: 600; display: inline-block; margin-top: 1rem; }

/* --- Footer CTA --- */
.cta-section {
    padding: 5rem 0;
    background-color: var(--navy-blue);
    color: var(--white);
    text-align: center;
}

.cta-section.light-cta {
    background-color: var(--off-white);
    color: var(--charcoal);
    border-top: 1px solid #e2e8f0;
}

.cta-section.light-cta h2 { color: var(--navy-blue); }
.cta-section.light-cta p { color: var(--text-light); }

.cta-section h2 {
    color: var(--white);
    font-size: 2.5rem;
}

.cta-section p {
    color: #e2e8f0;
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 2rem auto;
}

.btn-container {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* --- Footer --- */
footer {
    background-color: #081627;
    color: #a0aec0;
    padding: 3rem 0;
    text-align: center;
    font-size: 0.9rem;
}

footer h4 { color: var(--white); margin-bottom: 0.5rem; }
footer p { margin-bottom: 0.5rem; color: #a0aec0; }
.footer-links { margin-top: 1.5rem; }
.footer-links a { color: #a0aec0; margin: 0 10px; }

/* --- Mobile Navigation (Hamburger Menu) --- */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--navy-blue);
    padding: 0.5rem;
}

/* --- Responsive Design --- */
@media (max-width: 900px) {
    /* Stack the two-column grids */
    .grid-2-col { grid-template-columns: 1fr; gap: 2rem; }
    .hero h1 { font-size: 2.5rem; }
    .hero-buttons, .btn-container { flex-direction: column; align-items: center; }
    
    /* Mobile Menu Logic */
    .mobile-menu-btn { 
        display: block; 
    }
    
    .nav-links { 
        display: none; /* Hidden by default on mobile */
        flex-direction: column; 
        position: absolute; 
        top: 100px; /* Drops down just below the header */
        left: 0; 
        width: 100%; 
        background-color: var(--white); 
        padding: 2rem; 
        box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
        align-items: flex-start;
    }

    .nav-links.active {
        display: flex; /* Opens the menu when tapped */
    }

    /* Fix the dropdown for mobile view */
    .dropdown-content {
        position: static;
        box-shadow: none;
        padding-left: 1rem;
        border: none;
        border-left: 2px solid var(--accent);
        margin-top: 0.5rem;
    }
    
    .nav-links a.nav-btn {
        width: 100%;
        text-align: center;
        margin-top: 1rem;
    }
}