/* Copyright (c) 2026 OblivRuinDev. All rights reserved. */
:root {
    --primary-color: #3498db;
    --primary-dark: #2980b9;
    --secondary-color: #2ecc71;
    --secondary-dark: #27ae60;
    --accent-color: #e74c3c;
    --accent-dark: #c0392b;

    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #999999;

    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #f8f9fa;

    --border-color: #e0e0e0;
    --border-light: #f0f0f0;

    --link-color: var(--primary-color);
    --link-hover: var(--primary-dark);

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;

    --font-family-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', monospace;

    --font-size-xs: 0.875rem;
    --font-size-sm: 1rem;
    --font-size-md: 1.125rem;
    --font-size-lg: 1.5rem;
    --font-size-xl: 2rem;
    --font-size-xxl: 2.5rem;

    --line-height-base: 1.6;
    --line-height-tight: 1.3;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.15);

    --container-width: 1200px;
    --header-height: 80px;
    --footer-height: auto;
}

[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #333333;

    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-light: #999999;

    --border-color: #444444;
    --border-light: #555555;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.25);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.25);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.3);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family-primary), serif;
    font-size: var(--font-size-sm);
    line-height: var(--line-height-base);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color var(--transition-base), color var(--transition-base);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.main-container {
    flex: 1;
    margin-top: var(--header-height);
    padding-top: var(--spacing-lg);
    padding-bottom: var(--spacing-xxl);
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    background-color: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition-base);
}

.header .container {
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: var(--spacing-xs);
}

.logo-image {
    height: 40px;
    width: auto;
    border-radius: var(--radius-sm);
}

.logo-text {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.navbar {
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) 0;
    position: relative;
    transition: color var(--transition-base);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
}

.mobile-menu-btn {
    display: none;
    font-size: var(--font-size-lg);
    cursor: pointer;
    color: var(--text-primary);
}

.section-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
}

.expertise-section,
.blog-section {
    margin-bottom: var(--spacing-xxl);
}

.expertise-content {
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-light);
}

.expertise-content p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    line-height: var(--line-height-base);
}

.expertise-content p:last-child {
    margin-bottom: 0;
}

.projects-section {
    margin-bottom: var(--spacing-xxl);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.project-card {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.project-logo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.project-icon {
    font-size: 2rem;
    color: white;
}

.project-content {
    flex: 1;
}

.project-content h3 {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-base);
}

.project-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-base);
}

.project-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.blog-card {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.blog-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--text-light);
}

.blog-category {
    background-color: var(--primary-color);
    color: white;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
}

.blog-card h3 {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.blog-card h3 a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-base);
}

.blog-card h3 a:hover {
    color: var(--primary-color);
}

.blog-excerpt {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-base);
    flex: 1;
}

.blog-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-light);
}

.tag {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
}

.read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-base);
    align-self: flex-start;
}

.read-more:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.view-all-container {
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 24px;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-base), transform var(--transition-base);
}

.btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
}

/* 页脚 */
.footer {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.footer-container {
    display: flex;
    flex-direction: column;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand {
    flex: 1;
    min-width: 250px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
    text-decoration: none;
}

.footer-description {
    color: var(--text-secondary);
    line-height: var(--line-height-base);
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
}

.footer-column {
    min-width: 150px;
}

.footer-column h4 {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-column ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-base);
}

.footer-column ul li a:hover {
    color: var(--primary-color);
}

.contact-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.contact-list i {
    color: var(--primary-color);
    width: 20px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    color: var(--text-light);
    font-size: var(--font-size-xs);
}

.theme-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.theme-toggle:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.blog-post-header {
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--border-color);
}

.blog-post-title {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-tight);
}

.blog-post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--text-light);
    font-size: var(--font-size-sm);
}

.blog-post-content {
    line-height: var(--line-height-base);
    font-size: var(--font-size-md);
}

.blog-post-content h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin: var(--spacing-xl) 0 var(--spacing-md);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--border-light);
}

.blog-post-content h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin: var(--spacing-lg) 0 var(--spacing-sm);
}

.blog-post-content p {
    margin-bottom: var(--spacing-sm);
}

.blog-post-content code {
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-family: var(--font-family-mono), serif;
    font-size: 0.9em;
}

.blog-post-content pre {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    overflow-x: auto;
    margin: var(--spacing-lg) 0;
    font-family: var(--font-family-mono), serif;
    font-size: var(--font-size-sm);
}

.blog-post-content blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    color: var(--text-secondary);
    font-style: italic;
}

.blog-post-content ul,
.blog-post-content ol {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.repo-icon,.blog-icon {margin-right: var(--spacing-sm);}
.repo-icon {color: var(--secondary-color);}
.blog-icon {color: yellowgreen}
.ref-head {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.ref {
    background-color: var(--bg-tertiary);
    padding: var(--spacing-md);
    margin: var(--spacing-sm) 0;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.repo-ref {border-left: 4px solid var(--secondary-color);}
.blog-ref {border-left: 4px solid yellowgreen;}
.ref h4 {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin: 0;
}
.ref p {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin: 4px;
}

.link, main article a {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.link:hover, main article a:hover {
    text-decoration: underline;
}

.repo-commit {
    font-family: var(--font-family-mono), serif;
    background-color: var(--bg-secondary);
    padding: 3px 10px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    letter-spacing: 0.5px;
    margin-left: var(--spacing-xs);
    border: 1px solid var(--border-color);
}

.embedded-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    max-height: 400px;
    overflow-y: auto;
}

.embedded-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-light);
}

.embedded-header h4 {
    margin: 0;
    font-size: var(--font-size-md);
    font-weight: 600;
}

.embedded-content pre {
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    font-size: var(--font-size-sm);
    line-height: 1.4;
}

.cc-license {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--border-color);
}

.cc-license p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.cc-icons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.cc-icon {
    font-size: 1.5rem;
    color: var(--text-light);
}

.dark_link {
    color: var(--text-light);
    text-decoration: none;
    font-size: var(--font-size-xs);
}

.dark_link:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.blog-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.nav-button {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-base);
}

.nav-button:hover {
    background-color: var(--bg-tertiary);
    transform: translateY(-2px);
}

.back-to-top {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    background-color: var(--primary-color);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

.repo-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
    color: white;
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-left: var(--spacing-xs);
    border: none;
    text-decoration: none;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.repo-tag:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}
.repo-tag i {
    font-size: 0.8em;
}
.repo-tag .tag-text {
    padding-left: 2px;
}

.ref p > * {
    display: inline-block;
    vertical-align: middle;
}

.nest {margin-left: 24px;}

pre[class*="language-"],
code {
    font-family: var(--font-family-mono), Consolas, Monaco, 'Andale Mono', monospace;
    text-align: left;
    white-space: pre;
    word-spacing: normal;
    word-break: normal;
    word-wrap: normal;
    line-height: 1.5;
    tab-size: 4;
    hyphens: none;
}

pre[class*="language-"] {
    font-size: 0.85rem !important;
    line-height: 1 !important;
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md);
    overflow: auto;
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    position: relative;
}

pre[class*="language-"] code {
    display: block;
    padding: 0;
    background: transparent;
}

.blog-post-content code:not([class*="language-"]) {
    white-space: break-spaces;
    background-color: rgba(101, 108, 118, .2);
    border-radius: 6px;
    margin: 0;
    padding: .2em .4em;
    font-size: 85%;
}

.token.operator {
    background: none;
}

div.code-toolbar > .toolbar {
    position: absolute;
    top: 0.5em;
    right: 0.5em;
    opacity: 0;
    transition: opacity 0.3s ease;
}

div.code-toolbar:hover > .toolbar {
    opacity: 1;
}

div.code-toolbar > .toolbar .toolbar-item {
    display: inline-block;
}

div.code-toolbar > .toolbar > .toolbar-item > a,
div.code-toolbar > .toolbar > .toolbar-item > button,
div.code-toolbar > .toolbar > .toolbar-item > span {
    background: var(--bg-tertiary);
    color: var(--text-secondary) !important;
    font-size: var(--font-size-xs) !important;
    padding: 0.25em 0.5em !important;
    border-radius: var(--radius-md) !important;
    border: 1px solid var(--border-color) !important;
    text-decoration: none !important;
    cursor: pointer !important;
    transition: all var(--transition-fast) !important;
}

div.code-toolbar > .toolbar > .toolbar-item > a:hover,
div.code-toolbar > .toolbar > .toolbar-item > a:focus,
div.code-toolbar > .toolbar > .toolbar-item > button:hover,
div.code-toolbar > .toolbar > .toolbar-item > button:focus,
div.code-toolbar > .toolbar > .toolbar-item > span:hover,
div.code-toolbar > .toolbar > .toolbar-item > span:focus {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

[data-theme="dark"] pre[class*="language-"] {
    background: #000;
    border-color: #333;
}

[data-theme="dark"] pre[class*="language-"],
[data-theme="dark"] code[class*="language-"] {
    text-shadow: none !important;
    -webkit-text-stroke: 0 !important;
    text-stroke: 0 !important;
    background-color: #000 !important;
}

[data-theme="dark"] div.code-toolbar > .toolbar a,
[data-theme="dark"] div.code-toolbar > .toolbar button,
[data-theme="dark"] div.code-toolbar > .toolbar span {
    background: #444;
    color: #ccc;
    border-color: #555;
}

[data-theme="dark"] div.code-toolbar > .toolbar a:hover,
[data-theme="dark"] div.code-toolbar > .toolbar button:hover,
[data-theme="dark"] div.code-toolbar > .toolbar span:hover {
    background: var(--primary-color);
    color: white;
}

@media (max-width: 768px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        --spacing-xxl: 3rem;

        --font-size-lg: 1.25rem;
        --font-size-xl: 1.75rem;
        --font-size-xxl: 2rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .mobile-menu-btn {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background-color: var(--bg-primary);
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        padding-top: var(--spacing-xl);
        transition: left var(--transition-base);
        z-index: 999;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        margin: 0 0 var(--spacing-lg) 0;
    }

    .projects-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .footer-links {
        width: 100%;
        justify-content: space-between;
    }

    .footer-column {
        min-width: 45%;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
        padding: var(--spacing-lg) var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    :root {
        --header-height: 70px;
        --spacing-sm: 0.75rem;
    }

    .footer-links {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .footer-column {
        min-width: 100%;
    }
}