/* CSS Custom Properties for easy theming */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #333;
    --text-light: #666;
    --background-color: #fff;
    --background-light: #f8f9fa;
    --border-color: #dee2e6;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    --border-radius: 6px;
    --font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu,
        Cantarell, sans-serif;
    --font-mono:
        "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas,
        "Courier New", monospace;
    --max-width: 1200px;
    --container-padding: 1rem;
}

/* Reset and Base Styles */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

/* Layout */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Header */
.site-header {
    background-color: var(--background-light);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.site-title {
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
    color: var(--primary-color);
}

/* Navigation */
.site-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 2rem;
}

.site-nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.2s ease;
}

.site-nav a:hover,
.site-nav a.current {
    color: var(--secondary-color);
}

/* Main Content */
.site-main {
    min-height: calc(100vh - 200px);
    padding: 2rem 0;
}

.page-content {
    margin-bottom: 2rem;
}

.page-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    line-height: 1.2;
}

/* Hero Section */
.hero-section {
    text-align: center;
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--background-light) 0%, #fff 100%);
    border-radius: var(--border-radius);
    margin: 2rem 0;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.hero-cta {
    display: inline-block;
    background-color: var(--secondary-color);
    color: white;
    padding: 0.8rem 2rem;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: background-color 0.2s ease;
}

.hero-cta:hover {
    background-color: #2980b9;
}

/* Content Styling */
.content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.content blockquote {
    border-left: 4px solid var(--secondary-color);
    margin: 1.5rem 0;
    padding: 1rem 1.5rem;
    background-color: var(--background-light);
    border-radius: var(--border-radius);
}

.content code {
    background-color: var(--background-light);
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 0.9em;
}

.content pre {
    background-color: var(--background-light);
    padding: 1rem;
    border-radius: var(--border-radius);
    overflow-x: auto;
}

.content pre code {
    background: none;
    padding: 0;
}

/* Footer */
.site-footer {
    background-color: var(--background-light);
    border-top: 1px solid var(--border-color);
    padding: 1rem 0;
    margin-top: auto;
    text-align: center;
    color: var(--text-light);
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }

    .site-nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }

    .page-title {
        font-size: 2rem;
    }

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

    :root {
        --container-padding: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-section {
        padding: 2rem 0;
    }

    .site-nav ul {
        gap: 0.5rem;
    }
}

/* Utility Classes */
.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}