/* General Styles */
:root {
    --iab-blue: #2a3f6d; /* Primary Header Blue */
    --iab-orange: #f7a823; /* Accent Orange */
    --iab-light-blue: #87ceeb; /* Accent Light Blue (Sky Blue) */
    --iab-light-green: #b2d88b; /* Accent Light Green */
    --iab-dark-grey: #282b2e; /* Footer Background */
    --iab-light-grey: #eeeeee; /* Footer Text */
    --link-blue: #007bff; /* Standard Link */
    --text-dark: #333333;
    --text-light: #FFFFFF;
    --bg-light: #f8f9fa;
    --bg-white: #FFFFFF;
    --border-color: #e0e0e0;
}

body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
}

a {
    color: var(--link-blue);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
}

/* Header */
header {
    background-color: var(--iab-blue);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap; 
}

.logo a {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-light); /* White logo text */
    text-decoration: none;
}

/* Updated Navigation Styles */
nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex; 
    flex-wrap: wrap; 
}

nav ul li {
    margin-left: 1.5rem; 
}

nav ul li:first-child {
    margin-left: 0; 
}

nav ul li a {
    color: var(--text-light); /* White nav links */
    font-weight: 500;
    text-decoration: none; 
}

nav ul li a:hover {
    color: var(--iab-light-blue); /* Light blue hover */
    text-decoration: none; /* No underline on hover */
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.hero {
    text-align: center;
    padding: 2rem 0;
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

/* Categories / Quick Links */
.categories h2 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.8rem;
    color: var(--text-dark);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.category-card {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-dark);
}

.category-card:hover {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transform: translateY(-5px);
    text-decoration: none;
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--iab-blue); /* Use primary blue for icons */
}

.category-card h3 {
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.category-card p {
    font-size: 0.95rem;
    color: #666;
}

/* Article Page */
.breadcrumbs {
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    color: #666;
}

.breadcrumbs a {
    color: var(--link-blue);
}

.article-content {
    background-color: var(--bg-white);
    padding: 2rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 2rem;
}

.article-content h1 {
    margin-top: 0;
    margin-bottom: 1.5rem;
    font-size: 2rem;
    color: var(--iab-blue);
}

.article-content h2 {
    font-size: 1.6rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid #eee;
    padding-bottom: 0.5rem;
    color: var(--iab-orange);
}

.article-content h3 {
    font-size: 1.3rem;
    margin-top: 1.5rem;
    margin-bottom: 0.8rem;
    color: var(--iab-blue);
}

.article-content p {
    margin-bottom: 1rem;
}

.article-content ul, .article-content ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

.article-content img {
    margin-top: 1rem;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 5px;
}

/* Buttons */
.button, button, input[type="submit"] {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    text-align: center;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.button-primary {
    background-color: var(--iab-orange);
    color: var(--text-light);
}

.button-primary:hover {
    background-color: darken(var(--iab-orange), 10%);
    color: var(--text-light);
    text-decoration: none;
}

.button-secondary {
    background-color: var(--iab-light-blue);
    color: var(--text-dark);
}

.button-secondary:hover {
    background-color: darken(var(--iab-light-blue), 10%);
    color: var(--text-dark);
    text-decoration: none;
}

.related-links {
    background-color: #f1f1f1;
    padding: 1.5rem;
    border-radius: 8px;
    margin-top: 2rem;
}

.related-links h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--iab-blue);
}

.related-links ul {
    list-style: none;
    padding: 0;
}

.related-links ul li {
    margin-bottom: 0.5rem;
}

/* Footer */
footer {
    background-color: var(--iab-dark-grey);
    color: var(--iab-light-grey);
    padding: 2rem 0;
    margin-top: 3rem;
    text-align: center;
    font-size: 0.9rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.footer-container p {
    margin: 0.5rem 0;
}

/* Responsive Design */
@media (max-width: 992px) {
    nav ul {
        justify-content: flex-end; 
    }
}

@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        align-items: flex-start;
    }
    nav ul {
        margin-top: 1rem;
        justify-content: flex-start;
        width: 100%; 
    }
    nav ul li {
        margin-left: 0;
        margin-right: 1rem; 
    }
    .hero h1 {
        font-size: 2rem;
    }
    .article-content h1 {
        font-size: 1.8rem;
    }
    .article-content h2 {
        font-size: 1.4rem;
    }
    .article-content h3 {
        font-size: 1.2rem;
    }
}

@media (max-width: 576px) {
    nav ul {
        flex-direction: column;
        align-items: flex-start;
    }
    nav ul li {
        margin-bottom: 0.5rem;
        margin-right: 0;
        margin-left: 0; 
    }
    .category-grid {
        grid-template-columns: 1fr; 
    }
}