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

:root {
    /* Day Mode (Default) */
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #0f3460;
    --accent-light: #1e5f8a;
    --text-color: #333;
    --text-light: #666;
    --text-muted: #888;
    --white: #fff;
    --bg-main: #f5f7fa;
    --bg-card: #fff;
    --bg-nav: linear-gradient(135deg, #1e3c72 0%, #2a5298 50%, #1a1a2e 100%);
    --border-color: #e1e4e8;
    --shadow: rgba(0, 0, 0, 0.1);
    --code-bg: #1e1e3f;
    
    /* Page-specific accent colors */
    --page-accent: #1e5f8a;
}

/* Night Mode */
[data-theme="dark"] {
    --primary-color: #0a0a1a;
    --secondary-color: #12122a;
    --accent-color: #2d5a87;
    --accent-light: #3d7ab5;
    --text-color: #e0e0e0;
    --text-light: #a0a0a0;
    --text-muted: #707070;
    --white: #1a1a2e;
    --bg-main: #0d0d1a;
    --bg-card: #151528;
    --bg-nav: linear-gradient(135deg, #0d1525 0%, #152035 50%, #0a0a1a 100%);
    --border-color: #2a2a4a;
    --shadow: rgba(0, 0, 0, 0.3);
    --code-bg: #0d0d1a;
}

/* Language-specific accent colors — unified, no longer language-dependent */
body.lang-ja { --page-accent: #1e5f8a; }
body.lang-en { --page-accent: #1e5f8a; }
body.lang-zh { --page-accent: #1e5f8a; }

body.lang-ja[data-theme="dark"] { --page-accent: #1e5f8a; }
body.lang-en[data-theme="dark"] { --page-accent: #1e5f8a; }
body.lang-zh[data-theme="dark"] { --page-accent: #1e5f8a; }

body {
    font-family: 'JetBrains Mono', 'Fira Code', 'Source Code Pro', 'Monaco', 'Menlo', monospace;
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--bg-main);
    transition: background-color 0.3s, color 0.3s;
}

/* Navigation */
.navbar {
    background: var(--bg-nav);
    padding: 0.8rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px var(--shadow);
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo {
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo::before {
    content: '>';
    color: #00ff88;
    /* 移除闪烁动画，保持常亮 */
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s;
    padding: 8px 16px;
    border-radius: 6px;
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background: #00ff88;
    border-radius: 2px;
}

/* Top Right Controls */
.nav-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.lang-switch {
    position: relative;
}

.lang-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    font-family: inherit;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.3s;
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 10px 30px var(--shadow);
    overflow: hidden;
    display: none;
    min-width: 120px;
}

.lang-dropdown.show {
    display: block;
    animation: slideDown 0.2s ease;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.lang-option {
    display: block;
    width: 100%;
    padding: 10px 16px;
    border: none;
    background: none;
    color: var(--text-color);
    text-align: left;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9rem;
    transition: background 0.2s;
}

.lang-option:hover {
    background: var(--bg-main);
}

.lang-option.active {
    background: var(--accent-color);
    color: #fff;
}

.theme-toggle {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all 0.3s;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(15deg);
}

/* Hero Section - Home Page with Tokyo Background */
.hero {
    background: var(--bg-nav);
    color: #fff;
    padding: 100px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Tokyo cityscape background - only for home page */
body[data-page="home"] .hero {
    background: linear-gradient(180deg, rgba(10, 20, 40, 0.85) 0%, rgba(10, 20, 40, 0.7) 100%),
                url('https://images.unsplash.com/photo-1540959733332-eab4deabeeaf?w=1920&q=80') center/cover no-repeat;
    background-attachment: fixed;
}

/* Dark overlay on hero background */
body[data-page="home"] .hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(180deg, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0.4) 50%, rgba(0, 0, 0, 0.6) 100%),
        radial-gradient(circle at 30% 70%, rgba(0, 255, 136, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(30, 92, 138, 0.15) 0%, transparent 50%);
    z-index: 1;
}

/* Subtle grid pattern overlay */
body[data-page="home"] .hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -1px;
    background: linear-gradient(135deg, #ffffff 0%, #a8d8ff 30%, #00ff88 70%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 60px rgba(0, 255, 136, 0.3);
}

.hero p {
    font-size: 1.5rem;
    opacity: 0.95;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.9);
    letter-spacing: 2px;
}

/* Tech Stack Section */
.tech-stack {
    margin-bottom: 60px;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.tech-tag {
    display: inline-block;
    background: linear-gradient(135deg, rgba(30, 92, 138, 0.2) 0%, rgba(0, 255, 136, 0.1) 100%);
    border: 1px solid rgba(0, 255, 136, 0.3);
    color: var(--text-color);
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    font-family: 'JetBrains Mono', monospace;
    transition: all 0.3s;
    cursor: default;
}

.tech-tag:hover {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.2) 0%, rgba(30, 92, 138, 0.3) 100%);
    border-color: #00ff88;
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 255, 136, 0.2);
}

/* Main Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 50px 20px;
}

/* Section Titles */
.section-title {
    font-size: 1.8rem;
    margin-bottom: 35px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-title::before {
    content: '#';
    color: var(--page-accent);
    font-weight: 700;
}

/* Posts Grid */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.post-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 28px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.post-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--page-accent), var(--accent-light));
    transform: scaleX(0);
    transition: transform 0.3s;
}

.post-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px var(--shadow);
}

.post-card:hover::before {
    transform: scaleX(1);
}

.post-category {
    display: inline-block;
    background: linear-gradient(135deg, var(--page-accent), var(--accent-light));
    color: #fff;
    padding: 5px 14px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.post-card h3 {
    font-size: 1.35rem;
    margin-bottom: 12px;
    line-height: 1.4;
}

.post-card h3 a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.3s;
}

.post-card h3 a:hover {
    color: var(--page-accent);
}

.post-card p {
    color: var(--text-light);
    margin-bottom: 18px;
    font-size: 0.95rem;
}

.post-meta {
    display: flex;
    gap: 20px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Categories */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.category-card {
    display: block;
    background: var(--bg-card);
    padding: 35px 25px;
    border-radius: 16px;
    text-decoration: none;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px var(--shadow);
    border-color: var(--page-accent);
}

.category-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 18px;
}

.category-card h3 {
    color: var(--text-color);
    margin-bottom: 10px;
    font-size: 1.15rem;
}

.category-card p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Blog Post Page */
.blog-post {
    max-width: 850px;
    margin: 0 auto;
    padding: 50px 20px;
}

.blog-post header {
    margin-bottom: 50px;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--border-color);
}

.blog-post .post-category {
    margin-bottom: 20px;
}

.blog-post h1 {
    font-size: 2.4rem;
    color: var(--text-color);
    margin-bottom: 20px;
    line-height: 1.3;
    font-weight: 700;
}

.blog-post .post-meta {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.blog-content {
    line-height: 1.85;
    font-size: 1.05rem;
}

/* For older blog posts using post-content class */
.post-content {
    line-height: 1.85;
    font-size: 1.15rem;
}

.post-content {
    line-height: 1.85;
    font-size: 1.05rem;
}

.post-content h2 {
    color: var(--text-color);
    margin: 50px 0 25px;
    font-size: 1.6rem;
    position: relative;
    padding-left: 20px;
}

.post-content h2::before {
    content: '##';
    color: var(--page-accent);
    position: absolute;
    left: -5px;
    opacity: 0.5;
}

.post-content h3 {
    color: var(--text-color);
    margin: 35px 0 18px;
    font-size: 1.3rem;
}

.post-content p {
    margin-bottom: 22px;
    color: var(--text-color);
}

.post-content ul,
.post-content ol {
    margin-bottom: 22px;
    padding-left: 28px;
}

.post-content li {
    margin-bottom: 12px;
    color: var(--text-color);
}

.post-content code {
    background: var(--code-bg);
    color: #00ff88;
    padding: 3px 10px;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9em;
}

.post-content pre {
    background: var(--code-bg);
    color: #f8f8f2;
    padding: 16px;
    border-radius: 12px;
    overflow-x: auto;
    margin: 25px 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
    line-height: 1.2;
}

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

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

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

.post-content blockquote {
    border-left: 4px solid var(--page-accent);
    padding-left: 20px;
    margin: 25px 0;
    color: var(--text-light);
    font-style: italic;
}

.blog-content h2 {
    color: var(--text-color);
    margin: 50px 0 25px;
    font-size: 1.6rem;
    position: relative;
    padding-left: 20px;
}

.blog-content h2::before {
    content: '##';
    color: var(--page-accent);
    position: absolute;
    left: -5px;
    opacity: 0.5;
}

.blog-content h3 {
    color: var(--text-color);
    margin: 35px 0 18px;
    font-size: 1.3rem;
}

.blog-content p {
    margin-bottom: 22px;
    color: var(--text-color);
}

.blog-content ul,
.blog-content ol {
    margin-bottom: 22px;
    padding-left: 28px;
}

.blog-content li {
    margin-bottom: 12px;
    color: var(--text-color);
}

.blog-content code {
    background: var(--code-bg);
    color: #00ff88;
    padding: 3px 10px;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9em;
}

.blog-content pre {
    background: var(--code-bg);
    color: #f8f8f2;
    padding: 16px;
    border-radius: 12px;
    overflow-x: auto;
    margin: 25px 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
    line-height: 1.2;
}

.blog-content pre code {
    background: none;
    padding: 0;
    color: inherit;
}

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

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

.blog-content blockquote {
    border-left: 4px solid var(--page-accent);
    padding: 20px 25px;
    margin: 25px 0;
    background: var(--bg-card);
    border-radius: 0 8px 8px 0;
    color: var(--text-light);
    font-style: italic;
}

/* Table Styles */
.blog-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 25px 0;
    background: var(--bg-card);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px var(--shadow);
}

.blog-content th,
.blog-content td {
    padding: 14px 18px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.blog-content th {
    background: var(--page-accent);
    color: #fff;
    font-weight: 600;
}

.blog-content tr:last-child td {
    border-bottom: none;
}

.blog-content tr:hover td {
    background: var(--bg-main);
}

/* About Page */
.about-hero {
    background: var(--bg-nav);
    color: #fff;
    padding: 70px 20px;
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.about-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 70%, rgba(0, 255, 136, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(30, 92, 138, 0.15) 0%, transparent 50%);
}

.profile-section {
    position: relative;
    z-index: 1;
}

.profile-section .avatar {
    width: 140px;
    height: 140px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    border: 3px solid rgba(255, 255, 255, 0.2);
}

.profile-section h1 {
    font-size: 2.4rem;
    margin-bottom: 12px;
}

.profile-section .title {
    font-size: 1.15rem;
    opacity: 0.9;
    font-weight: 300;
}

.about-content {
    max-width: 850px;
    margin: 0 auto;
}

.content-block {
    margin-bottom: 55px;
    background: var(--bg-card);
    padding: 35px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.content-block h2 {
    font.5-size: 1rem;
    color: var(--text-color);
    margin-bottom: 28px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--page-accent);
    display: flex;
    align-items: center;
    gap: 10px;
}

.timeline {
    border-left: 3px solid var(--page-accent);
    padding-left: 28px;
    margin-left: 10px;
}

.timeline-item {
    margin-bottom: 28px;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -37px;
    top: 6px;
    width: 14px;
    height: 14px;
    background: var(--page-accent);
    border-radius: 50%;
    border: 3px solid var(--bg-card);
}

.timeline-item h3 {
    font-size: 1.15rem;
    color: var(--text-color);
    margin-bottom: 6px;
}

.timeline-info {
    color: var(--page-accent);
    font-size: 0.9rem;
    margin-bottom: 6px;
    font-weight: 500;
}

.interests-list,
.publications-list,
.awards-list {
    list-style: none;
    padding: 0;
}

.interests-list li,
.awards-list li {
    padding: 14px 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.interests-list li::before,
.awards-list li::before {
    content: '▹';
    color: var(--page-accent);
    font-weight: bold;
}

.interests-list li:last-child,
.awards-list li:last-child {
    border-bottom: none;
}

.publications-list li {
    padding: 18px 0;
    border-bottom: 1px solid var(--border-color);
}

.publications-list li:last-child {
    border-bottom: none;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
}

.skill-category {
    background: var(--bg-main);
    padding: 22px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.skill-category h3 {
    font-size: 1rem;
    color: var(--page-accent);
    margin-bottom: 10px;
    font-weight: 600;
}

.skill-category p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.contact-info p {
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-info a {
    color: var(--page-accent);
    text-decoration: none;
    transition: opacity 0.3s;
}

.contact-info a:hover {
    opacity: 0.8;
}

/* Footer */
.footer {
    background: var(--primary-color);
    color: #fff;
    text-align: center;
    padding: 35px 20px;
    margin-top: 70px;
}

.footer p {
    opacity: 0.8;
    font-size: 0.9rem;
}

/* Code Block Syntax Highlighting */
.hljs-keyword { color: #c678dd; }
.hljs-string { color: #98c379; }
.hljs-number { color: #d19a66; }
.hljs-comment { color: #5c6370; font-style: italic; }
.hljs-function { color: #61afef; }

/* Responsive */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 15px;
        padding: 15px 20px;
    }

    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-links {
        gap: 0.8rem;
    }

    .nav-links a {
        padding: 6px 12px;
        font-size: 0.85rem;
    }

    .nav-controls {
        gap: 8px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .posts-grid {
        grid-template-columns: 1fr;
    }

    .blog-post h1 {
        font-size: 1.8rem;
    }

    .profile-section h1 {
        font-size: 1.8rem;
    }

    .content-block {
        padding: 25px;
    }

    .timeline {
        padding-left: 20px;
    }
}

/* ========================================
   Code Block Styles (CSDN Style)
   ======================================== */

/* Prism.js Theme Override */
pre[class*="language-"],
code[class*="language-"] {
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 14px;
    line-height: 1.1;
    direction: ltr;
    text-align: left;
    white-space: pre;
    word-spacing: normal;
    word-break: normal;
    tab-size: 4;
    hyphens: none;
    background: #1e1e3f;
    color: #c5c8c6;
}

pre[class*="language-"] {
    padding: 1em;
    margin: 1em 0;
    overflow: auto;
    border-radius: 8px;
    max-height: 500px;
}

:not(pre) > code[class*="language-"] {
    padding: 0.1em 0.3em;
    border-radius: 0.3em;
}

/* Code Block Container */
.code-block {
    position: relative;
    margin: 20px 0;
    border-radius: 8px;
    overflow: hidden;
    background: #1e1e3f;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* Code Block Header */
.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 16px;
    background: #2d2d5a;
    border-bottom: 1px solid #3d3d6d;
}

.code-lang {
    font-size: 12px;
    font-weight: 600;
    color: #4fc3f7;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.code-actions {
    display: flex;
    gap: 10px;
}

.code-btn {
    background: transparent;
    border: 1px solid #4fc3f7;
    color: #4fc3f7;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 4px;
}

.code-btn:hover {
    background: #4fc3f7;
    color: #1e1e3f;
}

.code-btn.copied {
    background: #4caf50;
    border-color: #4caf50;
    color: white;
}

/* Collapsible Code Block */
.code-block.collapsed pre {
    max-height: 200px;
    overflow: hidden;
}

/* Expand button below code block */
.expand-btn {
    background: #2d2d5a;
    border: 1px solid #4fc3f7;
    color: #4fc3f7;
    cursor: pointer;
    padding: 8px 16px;
    font-size: 13px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin: 0;
    width: 100%;
    border-radius: 0 0 8px 8px;
}

.expand-btn:hover {
    background: #4fc3f7;
    color: #1e1e3f;
}

/* Code with Line Numbers */
.code-with-lines {
    counter-reset: line;
}

.code-line {
    display: block;
    padding: 0 1em;
    line-height: 1.2;
}

.code-line::before {
    counter-increment: line;
    content: counter(line);
    display: inline-block;
    width: 3em;
    margin-right: 1em;
    color: #6a6a8a;
    text-align: right;
}

/* Token Colors */
.token.comment,
.token.prolog,
.token.doctype,
.token.cdata {
    color: #6a9955;
}

.token.punctuation {
    color: #c5c8c6;
}

.token.property,
.token.tag,
.token.constant,
.token.symbol,
.token.deleted {
    color: #f44747;
}

.token.boolean,
.token.number {
    color: #b5cea8;
}

.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin,
.token.inserted {
    color: #ce9178;
}

.token.operator,
.token.entity,
.token.url,
.language-css .token.string,
.style .token.string,
.token.variable {
    color: #dcdcaa;
}

.token.atrule,
.token.attr-value,
.token.function,
.token.class-name {
    color: #4ec9b0;
}

.token.keyword {
    color: #569cd6;
}

.token.regex,
.token.important {
    color: #d16969;
}

/* Inline Code */
:not(pre) > code {
    background: rgba(0, 0, 0, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9em;
}

[data-theme="dark"] :not(pre) > code {
    background: rgba(255, 255, 255, 0.1);
}

/* Preformatted Text */
pre {
    background: #1e1e3f;
    padding: 1em;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1em 0;
    line-height: 1.1;
}

pre code {
    background: none;
    padding: 0;
    font-size: 14px;
    line-height: 1.1;
}

/* ============================================
   Visitor Map Section
   ============================================ */
.visitor-globe {
    padding: 60px 0 80px;
    border-top: 1px solid var(--border-color, #e0e0e0);
    margin-top: 40px;
}

.visitor-globe-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
}

.visitor-globe .section-title {
    font-size: 1.4rem;
    margin-bottom: 8px;
}

.globe-subtitle {
    font-size: 0.9rem;
    color: var(--text-muted, #888);
    margin-bottom: 30px;
    font-family: 'JetBrains Mono', monospace;
}

.globe-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 160px;
}

/* MapMyVisitors widget sizing — responsive */
.globe-container canvas,
.globe-container img,
.globe-container iframe {
    max-width: 100% !important;
    width: 100% !important;
    display: block;
    margin: 0 auto;
    overflow: hidden;
}

/* ============================================
   Search Modal
   ============================================ */

/* Search toggle button */
.search-toggle {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
  flex-shrink: 0;
}

.search-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.05);
}

.search-toggle svg {
  flex-shrink: 0;
}

/* Modal overlay */
.search-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 80px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
}

.search-modal.open {
  pointer-events: all;
  opacity: 1;
}

.search-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.search-panel {
  position: relative;
  width: 100%;
  max-width: 680px;
  margin: 0 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  overflow: hidden;
  transform: translateY(-12px) scale(0.97);
  transition: transform 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
  max-height: calc(100vh - 120px);
  display: flex;
  flex-direction: column;
}

.search-modal.open .search-panel {
  transform: translateY(0) scale(1);
}

/* Search header */
.search-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.search-input-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-main);
  border: 1.5px solid var(--border-color);
  border-radius: 10px;
  padding: 8px 14px;
  transition: border-color 0.2s;
}

.search-input-wrap:focus-within {
  border-color: var(--page-accent);
  background: var(--bg-card);
}

.search-icon {
  color: var(--text-muted);
  flex-shrink: 0;
}

.search-input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text-color);
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 1rem;
  line-height: 1.5;
  min-width: 0;
}

.search-input::placeholder {
  color: var(--text-muted);
}

.search-clear {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px;
  display: flex;
  align-items: center;
  border-radius: 4px;
  transition: color 0.2s;
  flex-shrink: 0;
}

.search-clear:hover {
  color: var(--text-color);
}

.search-close {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-family: 'JetBrains Mono', monospace;
  transition: all 0.2s;
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.search-close:hover {
  background: var(--bg-main);
  color: var(--text-color);
}

/* Results area */
.search-results {
  overflow-y: auto;
  flex: 1;
  min-height: 80px;
  max-height: 480px;
  padding: 8px 0;
}

.search-empty,
.search-no-results {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  color: var(--text-muted);
  gap: 10px;
  text-align: center;
}

.search-empty-icon {
  font-size: 2.4rem;
  opacity: 0.5;
}

.search-empty p,
.search-no-results p {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.search-no-results small {
  font-size: 0.82rem;
  color: var(--text-muted);
  opacity: 0.7;
}

/* Result items */
.search-result-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 20px;
  text-decoration: none;
  border-bottom: 1px solid var(--border-color);
  transition: background 0.15s;
  position: relative;
  cursor: pointer;
}

.search-result-item:last-child {
  border-bottom: none;
}

.search-result-item:hover {
  background: var(--bg-main);
}

.search-result-item:hover .result-title {
  color: var(--page-accent);
}

.result-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.result-cat-icon {
  font-size: 0.9rem;
}

.result-cat,
.result-tag,
.result-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.result-tag {
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  padding: 1px 8px;
  border-radius: 8px;
}

.result-sep {
  color: var(--border-color);
  font-size: 0.7rem;
}

.result-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-color);
  line-height: 1.4;
  transition: color 0.2s;
  margin: 0;
}

.result-desc {
  font-size: 0.85rem;
  color: var(--text-light);
  line-height: 1.5;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.result-lang-badge {
  position: absolute;
  top: 14px;
  right: 20px;
  font-size: 0.7rem;
  font-weight: 600;
  background: var(--page-accent);
  color: #fff;
  padding: 2px 8px;
  border-radius: 6px;
  font-family: 'JetBrains Mono', monospace;
  opacity: 0.85;
}

/* Highlight marks */
mark {
  background: rgba(0, 255, 136, 0.2);
  color: var(--page-accent);
  border-radius: 2px;
  padding: 0 1px;
  font-weight: 600;
}

/* Footer */
.search-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 18px;
  border-top: 1px solid var(--border-color);
  flex-shrink: 0;
}

.search-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.search-count {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

/* Scrollbar */
.search-results::-webkit-scrollbar {
  width: 4px;
}
.search-results::-webkit-scrollbar-track {
  background: transparent;
}
.search-results::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

/* Responsive */
@media (max-width: 600px) {
  .search-modal {
    padding-top: 20px;
    align-items: flex-end;
  }
  .search-panel {
    margin: 0;
    border-radius: 16px 16px 0 0;
    max-height: 80vh;
  }
}