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

:root {
    /* Colour palette */
    --primary: #1a5276;      /* Deep blue - trust, calm */
    --primary-dark: #154360;
    --secondary: #2e86c1;    /* Lighter blue */
    --accent: #27ae60;       /* Green - growth, relief */
    --accent-dark: #219653;
    --light: #f8f9fa;
    --dark: #2c3e50;
    --gray: #7f8c8d;
    --gray-light: #ecf0f1;
    --white: #ffffff;
    --black: #000000;
    --warning: #e74c3c;

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --font-serif: Georgia, 'Times New Roman', Times, serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-xxl: 3rem;

    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.15);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    line-height: var(--line-height-base);
    color: var(--dark);
    background-color: var(--white);
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-md);
    color: var(--primary);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

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

a {
    color: var(--secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover, a:focus {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--space-sm) var(--space-xl);
    background-color: var(--primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color var(--transition-normal), transform var(--transition-fast);
    text-align: center;
    text-decoration: none;
    border: 2px solid transparent;
}

.btn:hover, .btn:focus {
    background-color: var(--primary-dark);
    text-decoration: none;
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(0);
}

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

.btn-secondary:hover, .btn-secondary:focus {
    background-color: var(--accent-dark);
}

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

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

/* Layout */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Header & Navigation */
.site-header {
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0;
}

.logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.logo a:hover {
    text-decoration: none;
}

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.menu-toggle span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: var(--primary);
    border-radius: 3px;
    transition: var(--transition-normal);
}

/* Navigation */
.main-nav ul {
    display: flex;
    list-style: none;
    gap: var(--space-xl);
}

.main-nav a {
    color: var(--dark);
    font-weight: 500;
    text-decoration: none;
    padding: var(--space-xs) 0;
    position: relative;
}

.main-nav a:hover, .main-nav a:focus {
    color: var(--primary);
}

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

.main-nav a:hover::after, .main-nav a:focus::after {
    width: 100%;
}

/* Hero */
.hero {
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('https://images.pexels.com/photos/6646918/pexels-photo-6646918.jpeg?auto=compress&cs=tinysrgb&w=1600') center/cover no-repeat;
    color: var(--white);
    padding: var(--space-xxl) 0;
    text-align: center;
}

.hero h1 {
    color: var(--white);
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.hero p {
    font-size: 1.25rem;
    max-width: 800px;
    margin: 0 auto var(--space-xl);
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Sections */
.section {
    padding: var(--space-xxl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-title h2 {
    position: relative;
    display: inline-block;
    padding-bottom: var(--space-sm);
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--accent);
}

/* Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.card {
    background-color: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-content {
    padding: var(--space-lg);
}

.card h3 {
    margin-bottom: var(--space-sm);
}

/* Footer */
.site-footer {
    background-color: var(--dark);
    color: var(--gray-light);
    padding: var(--space-xxl) 0 var(--space-md);
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--space-md);
}

.footer-links h4 {
    color: var(--white);
    margin-bottom: var(--space-md);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    color: var(--gray-light);
}

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

.footer-bottom {
    border-top: 1px solid var(--gray);
    padding-top: var(--space-md);
    text-align: center;
    font-size: 0.9rem;
}

.footer-bottom a {
    color: var(--white);
    text-decoration: underline;
}

/* Utility classes */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--space-xs); }
.mt-2 { margin-top: var(--space-sm); }
.mt-3 { margin-top: var(--space-md); }
.mt-4 { margin-top: var(--space-lg); }
.mt-5 { margin-top: var(--space-xl); }

.mb-1 { margin-bottom: var(--space-xs); }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-3 { margin-bottom: var(--space-md); }
.mb-4 { margin-bottom: var(--space-lg); }
.mb-5 { margin-bottom: var(--space-xl); }

.py-1 { padding-top: var(--space-xs); padding-bottom: var(--space-xs); }
.py-2 { padding-top: var(--space-sm); padding-bottom: var(--space-sm); }
.py-3 { padding-top: var(--space-md); padding-bottom: var(--space-md); }
.py-4 { padding-top: var(--space-lg); padding-bottom: var(--space-lg); }
.py-5 { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }

/* Form styles */
.form-group {
    margin-bottom: var(--space-md);
}

label {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 600;
}

input, select, textarea {
    width: 100%;
    padding: var(--space-sm);
    border: 1px solid var(--gray);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(26, 82, 118, 0.2);
}

/* Filter controls */
.filter-controls {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    justify-content: center;
}

.filter-btn {
    padding: var(--space-sm) var(--space-md);
    background-color: var(--gray-light);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
    background-color: var(--primary);
    color: var(--white);
}

/* Eligibility checker */
.eligibility-checker {
    background-color: var(--gray-light);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-xl);
}

.checker-question {
    margin-bottom: var(--space-md);
}

.checker-question label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: normal;
    cursor: pointer;
}

.checker-question input[type="radio"] {
    width: auto;
}

.checker-result {
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    margin-top: var(--space-md);
    display: none;
}

.checker-result.positive {
    background-color: #d4edda;
    color: #155724;
}

.checker-result.negative {
    background-color: #f8d7da;
    color: #721c24;
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .menu-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: var(--white);
        box-shadow: var(--shadow-md);
        padding: var(--space-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: transform var(--transition-normal), opacity var(--transition-normal), visibility var(--transition-normal);
    }

    .main-nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .main-nav ul {
        flex-direction: column;
        gap: var(--space-md);
    }

    .header-container {
        padding: var(--space-sm) 0;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-sm);
    }

    .hero {
        padding: var(--space-xl) 0;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .section {
        padding: var(--space-xl) 0;
    }
}

/* Print styles */
@media print {
    .site-header,
    .hero-buttons,
    .site-footer,
    .filter-controls,
    .eligibility-checker,
    .btn {
        display: none !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
    }

    a {
        color: #000;
        text-decoration: underline;
    }

    .container {
        max-width: 100%;
        padding: 0;
    }

    .section {
        padding: 0;
        margin-bottom: 1cm;
    }
}