:root {
    /* Color Palette - Modern, High Contrast */
    --primary: #003366; /* Deep Blue */
    --primary-light: #00509e;
    --secondary: #2d3436; /* Dark Charcoal */
    --accent: #b5835a; /* Darker Gold for better contrast */
    --accent-light: #d4a373;
    --text-main: #2d3436;
    --text-muted: #636e72;
    --bg-main: #ffffff;
    --bg-alt: #f8f9fa;
    --white: #ffffff;
    --error: #d63031;
    --success: #00b894;

    /* Typography Hierarchy */
    --font-heading: 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-body: 'Segoe UI', system-ui, -apple-system, sans-serif;
    --h1-size: clamp(2.5rem, 5vw, 3.5rem);
    --h2-size: clamp(1.8rem, 4vw, 2.5rem);
    --h3-size: clamp(1.3rem, 3vw, 1.8rem);
    --body-size: 1.1rem;

    /* Spacing System */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;

    /* Layout */
    --max-width: 1200px;
    --border-radius: 12px;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 15px -3px rgba(0,0,0,0.1);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--body-size);
    line-height: 1.7;
    color: var(--text-main);
    background-color: var(--bg-main);
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    color: var(--primary);
    line-height: 1.2;
    margin-bottom: var(--space-sm);
}

h1 { font-size: var(--h1-size); font-weight: 800; }
h2 { font-size: var(--h2-size); font-weight: 700; margin-bottom: var(--space-md); }
h3 { font-size: var(--h3-size); font-weight: 600; }

p { margin-bottom: var(--space-sm); }

/* Header & Navigation */
header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    max-width: var(--max-width);
    margin: 0 auto;
}

.logo img {
    height: 50px;
    transition: transform var(--transition-fast);
}

.logo img:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 600;
    font-size: 0.95rem;
    position: relative;
    padding: 0.5rem 0;
    transition: color var(--transition-base);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent);
    transition: width var(--transition-base);
}

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

.nav-links a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    background-size: cover;
    background-position: center;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    position: relative;
    padding: var(--space-lg) 5%;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(0, 51, 102, 0.8), rgba(0, 0, 0, 0.4));
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    animation: fadeInDown 1s ease-out;
}

.hero h1 {
    color: var(--white);
    margin-bottom: var(--space-md);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: var(--space-md);
    opacity: 0.9;
}

/* Sections */
section {
    padding: var(--space-lg) 5%;
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-alt {
    background-color: var(--bg-alt);
    max-width: 100%;
}

.section-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

/* Grid System */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
}

/* Components */
.card {
    background: var(--white);
    padding: var(--space-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    border: 1px solid rgba(0,0,0,0.05);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.btn {
    display: inline-block;
    padding: 12px 32px;
    background-color: var(--primary);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
    transition: all var(--transition-base);
    border: 2px solid var(--primary);
    cursor: pointer;
}

.btn:hover {
    background-color: transparent;
    color: var(--primary);
}

.btn-accent {
    background-color: var(--accent);
    border-color: var(--accent);
    color: var(--white); /* We'll use white but ensure the background is dark enough */
}

.btn-accent:hover {
    background-color: transparent;
    color: var(--accent);
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Footer */
footer {
    background-color: var(--secondary);
    color: var(--white);
    padding: var(--space-lg) 5% var(--space-sm);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    max-width: var(--max-width);
    margin: 0 auto;
}

.footer-section h3 {
    color: var(--accent);
    margin-bottom: var(--space-md);
}

.footer-section p, .footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-md);
    margin-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

/* Forms */
form {
    display: grid;
    gap: var(--space-sm);
}

input, textarea {
    padding: 1rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
}

/* Responsive */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--primary);
    border-radius: 3px;
    transition: all var(--transition-base);
}

#menu-checkbox {
    display: none;
}

@media (max-width: 992px) {
    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--white);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        box-shadow: -10px 0 30px rgba(0,0,0,0.1);
        transition: right var(--transition-base);
        z-index: 1000;
    }

    #menu-checkbox:checked ~ .nav-links {
        right: 0;
    }

    #menu-checkbox:checked ~ .menu-toggle span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    #menu-checkbox:checked ~ .menu-toggle span:nth-child(2) {
        opacity: 0;
    }

    #menu-checkbox:checked ~ .menu-toggle span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
}

@media (max-width: 768px) {
    :root {
        --space-lg: 2.5rem;
    }
    
    .hero {
        min-height: 60vh;
    }

    .grid {
        grid-template-columns: 1fr;
    }
}