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

/* CSS Variables for Light Theme */
:root {
    --bg-primary: #fff;
    --bg-secondary: #f5f5f5;
    --bg-header: #2c3e50;
    --bg-footer: #2c3e50;
    --text-primary: #333;
    --text-secondary: #555;
    --text-meta: #828282;
    --text-light: #fff;
    --border-color: #e8e8e8;
    --link-color: #2c3e50;
    --link-hover: #3498db;
    --tag-bg: #3498db;
    --code-bg: #f5f5f5;
    --shadow: rgba(0,0,0,0.1);
}

/* Dark Space Theme */
body[data-theme="dark"] {
    --bg-primary: #0d0d0d;
    --bg-secondary: #1a1a1a;
    --bg-header: linear-gradient(135deg, #1a1a1a 0%, #2a1a3a 50%, #1a1a1a 100%);
    --bg-footer: linear-gradient(135deg, #1a1a1a 0%, #2a1a3a 50%, #1a1a1a 100%);
    --text-primary: #e8e8e8;
    --text-secondary: #b0b0b0;
    --text-meta: #888888;
    --text-light: #e8e8e8;
    --border-color: #333333;
    --link-color: #bb86fc;
    --link-hover: #d4b3ff;
    --tag-bg: linear-gradient(135deg, #7a4dbd 0%, #9a67ea 100%);
    --code-bg: #1a1a1a;
    --shadow: rgba(0, 0, 0, 0.5);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Starfield background for dark theme */
body[data-theme="dark"] {
    background: 
        radial-gradient(1px 1px at 20% 30%, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1px 1px at 60% 70%, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(1px 1px at 50% 50%, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(1px 1px at 80% 10%, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1px 1px at 90% 60%, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(1px 1px at 33% 80%, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1px 1px at 15% 90%, rgba(255, 255, 255, 0.3), transparent),
        #0d0d0d;
    background-size: 200% 200%;
    background-position: 0% 0%;
    animation: starfield 200s linear infinite;
}

@keyframes starfield {
    0% { background-position: 0% 0%; }
    100% { background-position: 100% 100%; }
}

.wrapper {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.site-header {
    background: var(--bg-header);
    color: var(--text-light);
    padding: 20px 0;
    box-shadow: 0 2px 5px var(--shadow);
    position: relative;
    transition: background 0.3s ease;
}

body[data-theme="dark"] .site-header {
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.5);
}

.site-title {
    font-size: 24px;
    font-weight: bold;
    color: var(--text-light);
    text-decoration: none;
    display: inline-block;
    transition: color 0.3s ease;
}

body[data-theme="dark"] .site-title {
    text-shadow: 0 0 10px rgba(187, 134, 252, 0.3);
}

.site-nav {
    float: right;
    margin-top: 5px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.site-nav a {
    color: var(--text-light);
    text-decoration: none;
    margin-left: 20px;
    transition: all 0.3s ease;
}

.site-nav a:hover {
    opacity: 0.7;
    text-shadow: 0 0 8px rgba(187, 134, 252, 0.5);
}

/* Theme Switcher Button */
.theme-switcher {
    background: none;
    border: 2px solid var(--text-light);
    color: var(--text-light);
    padding: 8px 15px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 5px;
    margin-left: 10px;
}

.theme-switcher:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.05);
}

body[data-theme="dark"] .theme-switcher {
    border-color: #bb86fc;
    box-shadow: 0 0 10px rgba(187, 134, 252, 0.2);
}

body[data-theme="dark"] .theme-switcher:hover {
    background: rgba(187, 134, 252, 0.1);
    box-shadow: 0 0 15px rgba(187, 134, 252, 0.3);
}

/* Main Content */
.page-content {
    padding: 40px 0;
    min-height: calc(100vh - 200px);
}

/* Home Page */
.home h1 {
    font-size: 36px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

body[data-theme="dark"] .home h1 {
    text-shadow: 0 0 20px rgba(187, 134, 252, 0.2);
}

.home .intro {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 40px;
    color: var(--text-secondary);
}

/* Blog List */
.post-list {
    list-style: none;
    margin-top: 30px;
}

.post-list-item {
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

body[data-theme="dark"] .post-list-item {
    background: rgba(26, 26, 26, 0.5);
    padding: 20px;
    border-radius: 10px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

body[data-theme="dark"] .post-list-item:hover {
    box-shadow: 0 6px 12px rgba(187, 134, 252, 0.15);
    transform: translateY(-2px);
}

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

.post-list-title {
    font-size: 24px;
    margin-bottom: 10px;
}

.post-list-title a {
    color: var(--link-color);
    text-decoration: none;
    transition: all 0.3s ease;
}

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

body[data-theme="dark"] .post-list-title a:hover {
    text-shadow: 0 0 10px rgba(187, 134, 252, 0.3);
}

.post-list-meta {
    color: var(--text-meta);
    font-size: 14px;
    margin-bottom: 10px;
}

.post-list-excerpt {
    color: var(--text-secondary);
}

/* Post Styles */
.post-header {
    margin-bottom: 30px;
}

.post-title {
    font-size: 32px;
    color: var(--text-primary);
    margin-bottom: 10px;
}

body[data-theme="dark"] .post-title {
    text-shadow: 0 0 20px rgba(187, 134, 252, 0.2);
}

.post-meta {
    color: var(--text-meta);
    font-size: 14px;
}

.post-content {
    font-size: 16px;
    line-height: 1.8;
}

.post-content h2 {
    font-size: 28px;
    margin-top: 40px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

body[data-theme="dark"] .post-content h2 {
    text-shadow: 0 0 15px rgba(187, 134, 252, 0.15);
}

.post-content h3 {
    font-size: 22px;
    margin-top: 30px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.post-content p {
    margin-bottom: 20px;
}

.post-content ul, .post-content ol {
    margin-left: 30px;
    margin-bottom: 20px;
}

.post-content li {
    margin-bottom: 10px;
}

.post-content code {
    background-color: var(--code-bg);
    color: var(--text-primary);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: "Courier New", monospace;
    font-size: 14px;
}

body[data-theme="dark"] .post-content code {
    border: 1px solid var(--border-color);
}

.post-content pre {
    background-color: var(--code-bg);
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 20px;
}

body[data-theme="dark"] .post-content pre {
    border: 1px solid var(--border-color);
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
}

.post-content pre code {
    background-color: transparent;
    padding: 0;
    border: none;
}

.post-tags {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.post-tags .tag {
    display: inline-block;
    background: var(--tag-bg);
    color: #fff;
    padding: 5px 10px;
    border-radius: 3px;
    font-size: 12px;
    margin-right: 5px;
    margin-top: 5px;
    transition: all 0.3s ease;
}

body[data-theme="dark"] .post-tags .tag {
    box-shadow: 0 0 10px rgba(187, 134, 252, 0.2);
}

body[data-theme="dark"] .post-tags .tag:hover {
    box-shadow: 0 0 15px rgba(187, 134, 252, 0.3);
    transform: scale(1.05);
}

/* Page Styles */
.page-header {
    margin-bottom: 30px;
}

.page-title {
    font-size: 32px;
    color: var(--text-primary);
}

body[data-theme="dark"] .page-title {
    text-shadow: 0 0 20px rgba(187, 134, 252, 0.2);
}

.page-content {
    font-size: 16px;
    line-height: 1.8;
}

/* Footer Styles */
.site-footer {
    background: var(--bg-footer);
    color: var(--text-light);
    padding: 40px 0 20px;
    margin-top: 60px;
    transition: background 0.3s ease;
}

body[data-theme="dark"] .site-footer {
    box-shadow: 0 -2px 15px rgba(0, 0, 0, 0.5);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}

.footer-col {
    flex: 1;
}

.footer-col h3 {
    font-size: 18px;
    margin-bottom: 15px;
}

body[data-theme="dark"] .footer-col h3 {
    text-shadow: 0 0 10px rgba(187, 134, 252, 0.2);
}

.footer-col p {
    color: #bdc3c7;
    font-size: 14px;
}

body[data-theme="dark"] .footer-col p {
    color: var(--text-secondary);
}

.social-links {
    list-style: none;
}

.social-links li {
    margin-bottom: 8px;
}

.social-links a {
    color: #bdc3c7;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    color: #fff;
}

body[data-theme="dark"] .social-links a {
    color: var(--text-secondary);
}

body[data-theme="dark"] .social-links a:hover {
    color: var(--link-hover);
    text-shadow: 0 0 10px rgba(187, 134, 252, 0.3);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #34495e;
}

body[data-theme="dark"] .footer-bottom {
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: #bdc3c7;
    font-size: 14px;
}

body[data-theme="dark"] .footer-bottom p {
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .site-nav {
        float: none;
        margin-top: 15px;
        flex-wrap: wrap;
    }
    
    .site-nav a {
        display: inline-block;
        margin: 5px 10px 5px 0;
    }
    
    .theme-switcher {
        margin-left: 0;
        margin-top: 10px;
    }
    
    .footer-content {
        flex-direction: column;
    }
    
    .footer-col {
        margin-bottom: 30px;
    }
}

/* Additional Dark Theme Enhancements */
body[data-theme="dark"] h2 {
    color: var(--text-primary);
}

body[data-theme="dark"] a {
    color: var(--link-color);
}

body[data-theme="dark"] a:hover {
    color: var(--link-hover);
}

/* Glow effects for dark theme */
body[data-theme="dark"] .wrapper {
    position: relative;
}

body[data-theme="dark"] article {
    background: rgba(26, 31, 58, 0.3);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
}

body[data-theme="dark"] .home {
    background: transparent;
    padding: 0;
    box-shadow: none;
    border: none;
}