/* 倒带日记 - 科技风格 (Tech/Dark Mode) */

:root {
    --bg-primary: #1e293b;
    --bg-secondary: #334155;
    --bg-card: #475569;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --accent-cyan: #22d3ee;
    --accent-blue: #60a5fa;
    --accent-purple: #a78bfa;
    --border-color: #64748b;
    --code-bg: #1e293b;
    --glow-cyan: 0 0 15px rgba(34, 211, 238, 0.2);
    --max-width: 720px;
}

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

body {
    font-family: 'SF Mono', 'Fira Code', 'JetBrains Mono', Consolas, Monaco, 'Courier New', monospace;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.8;
    font-size: 15px;
    min-height: 100vh;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Header - Tech Style */
.site-header {
    padding: 60px 0 40px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 50px;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.site-title a {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent-cyan);
    text-decoration: none;
    letter-spacing: -1px;
    text-shadow: var(--glow-cyan);
}

.site-tagline {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 12px;
    font-family: 'SF Mono', monospace;
    letter-spacing: 0.5px;
}

.site-tagline::before {
    content: '> ';
    color: var(--accent-cyan);
}

.site-nav {
    margin-top: 24px;
    display: flex;
    gap: 28px;
}

.site-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    font-family: 'SF Mono', monospace;
    transition: all 0.3s;
    padding: 6px 12px;
    border: 1px solid transparent;
    border-radius: 4px;
}

.site-nav a:hover {
    color: var(--accent-cyan);
    border-color: var(--accent-cyan);
    background: rgba(0, 212, 255, 0.05);
}

/* Hero Section */
.hero {
    margin-bottom: 50px;
    padding: 40px 0;
    border-bottom: 1px solid var(--border-color);
}

.hero h2 {
    font-size: 26px;
    font-weight: 600;
    margin-bottom: 20px;
    line-height: 1.4;
    color: var(--text-primary);
}

.hero h2::before {
    content: '// ';
    color: var(--accent-purple);
}

.hero p {
    color: var(--text-secondary);
    font-size: 15px;
    margin-bottom: 14px;
}

.hero-note {
    font-size: 13px !important;
    color: var(--accent-cyan) !important;
    margin-top: 24px;
    padding: 16px 20px;
    background: var(--bg-card);
    border-radius: 8px;
    border-left: 3px solid var(--accent-cyan);
    font-family: 'SF Mono', monospace;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero-note::before {
    content: '[AI] ';
    color: var(--accent-purple);
    font-weight: 600;
}

/* Posts Section */
.latest-posts h3 {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent-blue);
    margin-bottom: 28px;
    font-family: 'SF Mono', monospace;
}

.latest-posts h3::before {
    content: '## ';
    color: var(--text-secondary);
}

.post-card {
    padding: 28px 0;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s;
}

.post-card:hover {
    padding-left: 12px;
    border-left: 2px solid var(--accent-cyan);
}

.post-date {
    font-size: 12px;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 10px;
    font-family: 'SF Mono', monospace;
}

.post-date::before {
    content: '// ';
    color: var(--accent-blue);
}

.post-title a {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    line-height: 1.4;
    transition: color 0.3s;
}

.post-title a:hover {
    color: var(--accent-cyan);
    text-shadow: var(--glow-cyan);
}

.post-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 10px;
    line-height: 1.7;
}

/* Article Page */
.article-header {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
}

.article-title {
    font-size: 30px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.article-title::before {
    content: '# ';
    color: var(--accent-purple);
}

.article-meta {
    font-size: 13px;
    color: var(--text-secondary);
    font-family: 'SF Mono', monospace;
}

.ai-badge {
    display: inline-block;
    font-size: 11px;
    color: var(--accent-cyan);
    background: rgba(0, 212, 255, 0.1);
    padding: 4px 12px;
    border-radius: 4px;
    margin-left: 16px;
    border: 1px solid var(--accent-cyan);
    font-family: 'SF Mono', monospace;
}

.ai-badge::before {
    content: '<';
}

.ai-badge::after {
    content: '>';
}

.article-content {
    font-size: 15px;
    line-height: 1.9;
    color: var(--text-primary);
}

.article-content h2 {
    font-size: 22px;
    font-weight: 600;
    margin: 40px 0 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.article-content h2::before {
    content: '## ';
    color: var(--accent-purple);
}

.article-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 32px 0 16px;
    color: var(--text-primary);
}

.article-content h3::before {
    content: '### ';
    color: var(--accent-blue);
}

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

.article-content ul,
.article-content ol {
    margin-bottom: 20px;
    padding-left: 24px;
}

.article-content li {
    margin-bottom: 10px;
    position: relative;
}

.article-content li::marker {
    color: var(--accent-cyan);
}

.article-content blockquote {
    border-left: 3px solid var(--accent-cyan);
    padding: 20px 24px;
    margin: 28px 0;
    color: var(--text-secondary);
    background: var(--bg-card);
    border-radius: 0 8px 8px 0;
    font-style: italic;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.article-content blockquote::before {
    content: '> ';
    color: var(--accent-cyan);
}

.article-content code {
    background: var(--code-bg);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: 'SF Mono', monospace;
    font-size: 13px;
    color: var(--accent-cyan);
    border: 1px solid var(--border-color);
}

.article-content pre {
    background: var(--code-bg);
    padding: 20px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 24px 0;
    border: 1px solid var(--border-color);
}

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

/* Links */
.article-content a {
    color: var(--accent-cyan);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: all 0.3s;
}

.article-content a:hover {
    border-bottom-color: var(--accent-cyan);
}

/* About Page */
.about-section {
    margin-bottom: 40px;
    padding: 30px 0;
    border-bottom: 1px solid var(--border-color);
}

.about-section:last-child {
    border-bottom: none;
}

.about-section h2 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.about-section h2::before {
    content: '## ';
    color: var(--accent-purple);
}

.about-section p {
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.about-section ul {
    padding-left: 20px;
    color: var(--text-secondary);
}

.about-section li {
    margin-bottom: 12px;
    position: relative;
}

.about-section li strong {
    color: var(--accent-cyan);
}

/* Footer */
.site-footer {
    margin-top: 80px;
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
    background: var(--bg-secondary);
}

.site-footer p {
    font-size: 12px;
    color: var(--text-secondary);
    font-family: 'SF Mono', monospace;
}

.site-footer p::before {
    content: '// ';
    color: var(--accent-blue);
}

/* Terminal-style elements */
.terminal-line {
    font-family: 'SF Mono', monospace;
    color: var(--text-secondary);
}

.terminal-line::before {
    content: '$ ';
    color: var(--accent-green);
}

/* Selection */
::selection {
    background: var(--accent-cyan);
    color: var(--bg-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-blue);
}

/* Responsive */
@media (max-width: 600px) {
    .site-header {
        padding: 40px 0 30px;
    }
    
    .site-title a {
        font-size: 26px;
    }
    
    .site-nav {
        gap: 16px;
        flex-wrap: wrap;
    }
    
    .hero h2 {
        font-size: 22px;
    }
    
    .hero h2::before {
        content: '//';
        display: block;
        margin-bottom: 8px;
    }
    
    .article-title {
        font-size: 24px;
    }
    
    .article-content {
        font-size: 14px;
    }
    
    .article-content h2 {
        font-size: 19px;
    }
    
    .article-content h2::before {
        content: '##';
        display: block;
        margin-bottom: 8px;
    }
}

/* Dark mode glow effects */
.glow-text {
    text-shadow: 0 0 10px currentColor;
}

/* Grid background pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: -1;
}

/* ICP备案 */
.icp {
    margin-top: 8px;
}

.icp a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 12px;
}

.icp a:hover {
    color: var(--accent-cyan);
}

/* Project Cards */
.projects {
    margin: 40px 0;
}

.project-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 24px;
    transition: all 0.3s ease;
}

.project-card:hover {
    border-color: var(--accent-cyan);
    box-shadow: var(--glow-cyan);
}

.project-status {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}

.project-status.in-progress {
    background: rgba(34, 211, 238, 0.2);
    color: var(--accent-cyan);
}

.project-status.planning {
    background: rgba(167, 139, 250, 0.2);
    color: var(--accent-purple);
}

.project-status.running {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
}

.project-card h4 {
    color: var(--accent-blue);
    font-size: 18px;
    margin-bottom: 12px;
}

.project-desc {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.project-features {
    list-style: none;
    margin-bottom: 16px;
}

.project-features li {
    padding: 4px 0;
    padding-left: 16px;
    position: relative;
    color: var(--text-secondary);
    font-size: 14px;
}

.project-features li::before {
    content: "›";
    position: absolute;
    left: 0;
    color: var(--accent-cyan);
}

.project-note {
    font-size: 13px;
    color: var(--text-secondary);
    font-style: italic;
}

/* Service Cards */
.services {
    margin: 40px 0;
}

.service-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.service-card:hover {
    border-color: var(--accent-blue);
}

.service-card h4 {
    color: var(--accent-blue);
    font-size: 17px;
    margin-bottom: 10px;
}

.service-desc {
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.service-meta {
    margin-bottom: 12px;
}

.service-meta .tag {
    display: inline-block;
    background: var(--bg-card);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    margin-right: 8px;
    margin-bottom: 4px;
    color: var(--text-secondary);
}

.service-note {
    font-size: 13px;
    color: var(--text-secondary);
    font-style: italic;
}

/* Interest Tags */
.interests {
    margin: 40px 0;
}

.interest-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
}

.interest-tags .tag {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 13px;
    color: var(--text-secondary);
}

/* Collaboration Section */
.collaboration {
    margin: 40px 0;
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: 8px;
}

.collab-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.collab-item {
    text-align: center;
    padding: 16px;
}

.collab-item h5 {
    color: var(--accent-cyan);
    margin-bottom: 8px;
}

.collab-item p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Contact Section */
.contact-list {
    list-style: none;
    margin: 20px 0;
}

.contact-list li {
    padding: 8px 0;
    color: var(--text-secondary);
}

.contact-note {
    font-size: 13px;
    color: var(--text-secondary);
    font-style: italic;
    margin-top: 16px;
}

/* Ability Circle */
.ability-circle {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin: 24px 0;
    text-align: center;
}

.circle-item {
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.circle-item h5 {
    color: var(--accent-cyan);
    margin-bottom: 8px;
}

.circle-item p {
    font-size: 13px;
    color: var(--text-secondary);
}

.circle-note {
    text-align: center;
    font-size: 13px;
    color: var(--text-secondary);
    font-style: italic;
}

/* CTA Section */
.cta {
    background: var(--bg-secondary);
    padding: 40px;
    border-radius: 8px;
    text-align: center;
    margin: 40px 0;
    border: 1px solid var(--border-color);
}

.cta h3 {
    color: var(--accent-cyan);
    margin-bottom: 16px;
}

.cta .contact {
    font-size: 18px;
    color: var(--accent-blue);
    margin-top: 16px;
}