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

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --text-color: #333;
    --text-light: #666;
    --bg-color: #fff;
    --bg-light: #f8f9fa;
    --border-color: #e0e0e0;
    --link-color: #3498db;
    --link-hover: #2980b9;
    --max-width: 800px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    font-size: 16px;
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand a {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s;
}

.nav-brand a:hover {
    color: var(--secondary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--secondary-color);
}

/* Main Content */
main {
    padding: 3rem 0;
    min-height: calc(100vh - 200px);
}

.page-header {
    margin-bottom: 3rem;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.page-header .subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    font-style: italic;
}

/* Content */
.content {
    max-width: 700px;
    margin: 0 auto;
}

.home-content {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 3rem;
}

.home-content h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.home-content ul {
    list-style-position: inside;
    color: var(--text-light);
}

/* Posts */
.posts-list {
    margin-top: 2rem;
}

.post-preview {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.post-preview:last-child {
    border-bottom: none;
}

.post-title {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.post-title a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s;
}

.post-title a:hover {
    color: var(--secondary-color);
}

.post-meta {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.post-entry {
    margin-top: 1rem;
    line-height: 1.8;
}

.post-entry p {
    margin-bottom: 1rem;
}

.post-tags {
    margin-top: 1rem;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    background-color: var(--bg-light);
    color: var(--text-color);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Article Content */
.post-content {
    line-height: 1.8;
}

.post-content h3 {
    color: var(--primary-color);
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.post-content ul {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
}

.post-content li {
    margin-bottom: 0.5rem;
}

.post-content a {
    color: var(--link-color);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s;
}

.post-content a:hover {
    border-bottom-color: var(--link-color);
}

.post-content strong {
    font-weight: 600;
    color: var(--primary-color);
}

/* Email Link */
.email-link {
    color: var(--link-color);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s, color 0.3s;
}

.email-link:hover {
    color: var(--link-hover);
    border-bottom-color: var(--link-color);
}

/* Footer */
.footer {
    background-color: var(--bg-light);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-menu {
        gap: 1.5rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .post-title {
        font-size: 1.5rem;
    }

    .container {
        padding: 0 15px;
    }

    main {
        padding: 2rem 0;
    }
}

@media (max-width: 480px) {
    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    .page-header h1 {
        font-size: 1.75rem;
    }

    .home-content {
        padding: 1.5rem;
    }
}