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

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --bg-color: #ffffff;
    --bg-gray: #f9fafb;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --warning-color: #f59e0b;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.site-header {
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo a {
    display: inline-block;
}

.logo img {
    height: 50px;
    width: auto;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
    flex-wrap: wrap;
}

.main-nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
    padding: 0.5rem 0;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 6rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.95;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    background-color: var(--bg-gray);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

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

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

.btn-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    transition: color 0.3s;
}

.btn-link:hover {
    color: var(--secondary-color);
}

/* Sections */
section {
    padding: 4rem 0;
}

section h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-color);
    text-align: center;
}

section h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

/* Introduction Section */
.intro-section {
    background-color: var(--bg-gray);
}

.intro-section p {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 1rem;
    color: var(--text-light);
}

/* Featured Topics */
.topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.topic-card {
    background-color: var(--bg-color);
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.topic-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.15);
}

.topic-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.topic-card p {
    margin-bottom: 1rem;
    color: var(--text-light);
}

/* Educational Content */
.educational-content {
    background-color: var(--bg-gray);
}

.content-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 2rem;
}

.content-column p {
    margin-bottom: 1rem;
    line-height: 1.8;
    color: var(--text-light);
}

/* How-To Section */
.howto-list {
    max-width: 900px;
    margin: 0 auto;
}

.howto-item {
    background-color: var(--bg-color);
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.howto-item h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.howto-item ol {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.howto-item li {
    margin-bottom: 0.75rem;
    line-height: 1.6;
    color: var(--text-light);
}

.howto-item p {
    color: var(--text-light);
    font-style: italic;
}

/* FAQ Section */
.faq-section {
    background-color: var(--bg-gray);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--bg-color);
    padding: 2rem;
    margin-bottom: 1.5rem;
    border-radius: 0.5rem;
    border-left: 4px solid var(--primary-color);
}

.faq-item h3 {
    color: var(--text-color);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.faq-item p {
    color: var(--text-light);
    line-height: 1.8;
}

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

.article-preview {
    background-color: var(--bg-gray);
    padding: 2rem;
    border-radius: 0.5rem;
    transition: transform 0.3s;
}

.article-preview:hover {
    transform: translateY(-3px);
}

.article-preview h3 {
    color: var(--text-color);
    margin-bottom: 1rem;
}

.article-preview p {
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.7;
}

/* Footer */
.site-footer {
    background-color: var(--text-color);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-column h4 {
    margin-bottom: 1rem;
    color: white;
    font-size: 1.125rem;
}

.footer-column p {
    margin-bottom: 0.5rem;
    opacity: 0.9;
    line-height: 1.6;
}

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

.footer-column ul li {
    margin-bottom: 0.5rem;
}

.footer-column a {
    color: white;
    text-decoration: none;
    opacity: 0.9;
    transition: opacity 0.3s;
}

.footer-column a:hover {
    opacity: 1;
    text-decoration: underline;
}

.footer-column address {
    font-style: normal;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    text-align: center;
}

.footer-bottom p {
    opacity: 0.8;
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .main-nav ul {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1.125rem;
    }
    
    section h2 {
        font-size: 1.75rem;
    }
    
    .topics-grid,
    .articles-grid {
        grid-template-columns: 1fr;
    }
}

/* Blog Styles */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.blog-card {
    background-color: var(--bg-color);
    border-radius: 0.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.blog-card-content {
    padding: 1.5rem;
}

.blog-card h3 {
    margin-bottom: 0.75rem;
}

.blog-meta {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

/* Article Page Styles */
.article-header {
    text-align: center;
    padding: 3rem 0;
    background-color: var(--bg-gray);
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem 1rem;
}

.article-content h2 {
    text-align: left;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.article-content h3 {
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.article-content p {
    margin-bottom: 1rem;
    line-height: 1.8;
    color: var(--text-light);
}

.article-content ul,
.article-content ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.article-content li {
    margin-bottom: 0.5rem;
    line-height: 1.7;
    color: var(--text-light);
}

/* Table Styles */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--bg-gray);
    font-weight: 600;
    color: var(--text-color);
}

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-family: inherit;
    font-size: 1rem;
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}