:root {
    --bg-primary: #f4f4f4;
    --bg-secondary: #fff;
    --bg-sidebar: #ecf0f1;
    --bg-header: #2c3e50;
    --bg-nav: #34495e;
    --text-primary: #333;
    --text-secondary: #7f8c8d;
    --text-light: #ecf0f1;
    --text-header: #fff;
    --border-color: #ecf0f1;
    --border-sidebar: #bdc3c7;
    --link-color: #2c3e50;
    --link-hover: #3498db;
    --link-sidebar: #34495e;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1a1a1a;
        --bg-secondary: #2d2d2d;
        --bg-sidebar: #242424;
        --bg-header: #1a1a2e;
        --bg-nav: #16213e;
        --text-primary: #e0e0e0;
        --text-secondary: #a0a0a0;
        --text-light: #c0c0c0;
        --text-header: #f0f0f0;
        --border-color: #404040;
        --border-sidebar: #505050;
        --link-color: #6eb5ff;
        --link-hover: #4a9eff;
        --link-sidebar: #8ec5ff;
    }
}

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

body {
    font-family: Georgia, serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background-color: var(--bg-secondary);
    transition: background-color 0.3s ease;
}

/* Header */
header {
    background-color: var(--bg-header);
    color: var(--text-header);
    padding: 2rem 0;
    text-align: center;
    transition: background-color 0.3s ease, color 0.3s ease;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

header p {
    font-style: italic;
    color: var(--text-light);
    transition: color 0.3s ease;
}

/* Navigation */
nav {
    background-color: var(--bg-nav);
    padding: 0;
    transition: background-color 0.3s ease;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
}

nav ul li {
    margin: 0;
}

nav ul li a {
    display: block;
    color: var(--text-header);
    text-decoration: none;
    padding: 1rem 1.5rem;
    transition: background-color 0.3s, color 0.3s;
}

nav ul li a:hover {
    background-color: var(--bg-header);
}

/* Main Content Area */
.main-content {
    display: flex;
    padding: 2rem;
    gap: 2rem;
}

/* Blog Posts */
.posts {
    flex: 3;
}

article {
    background-color: var(--bg-secondary);
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--border-color);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

article:last-child {
    border-bottom: none;
}

article h2 {
    color: var(--link-color);
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

article h2 a {
    color: var(--link-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

article h2 a:hover {
    color: var(--link-hover);
}

.post-meta {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    transition: color 0.3s ease;
}

.post-meta span {
    margin-right: 1rem;
}

article p {
    margin-bottom: 1rem;
    text-align: justify;
}

.read-more {
    display: inline-block;
    color: var(--link-hover);
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
}

.read-more:hover {
    text-decoration: underline;
}

/* Sidebar */
.sidebar {
    flex: 1;
    background-color: var(--bg-sidebar);
    padding: 1.5rem;
    border-radius: 5px;
    height: fit-content;
    transition: background-color 0.3s ease;
}

.sidebar h3 {
    color: var(--link-color);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-sidebar);
    transition: color 0.3s ease, border-color 0.3s ease;
}

.sidebar ul {
    list-style: none;
}

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

.sidebar ul li a {
    color: var(--link-sidebar);
    text-decoration: none;
    transition: color 0.3s ease;
}

.sidebar ul li a:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

.widget {
    margin-bottom: 2rem;
}

.widget:last-child {
    margin-bottom: 0;
}

/* Footer */
footer {
    background-color: var(--bg-header);
    color: var(--text-light);
    text-align: center;
    padding: 1.5rem;
    margin-top: 2rem;
    transition: background-color 0.3s ease, color 0.3s ease;
}

footer p {
    margin: 0;
}

/* Responsive */
@media (max-width: 768px) {
    .main-content {
        flex-direction: column;
    }

    nav ul {
        flex-direction: column;
    }

    nav ul li a {
        border-bottom: 1px solid #2c3e50;
    }
}