/**
 * ccap Documentation Site - Main Stylesheet
 * GLFW-inspired design for a clean, professional look
 */

/* CSS Variables */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #10b981;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --text-lighter: #9ca3af;
    --bg-color: #ffffff;
    --bg-secondary: #f3f4f6;
    --bg-tertiary: #e5e7eb;
    --border-color: #e5e7eb;
    --code-bg: #1e293b;
    --code-bg-dark: #0f172a;
    --header-height: 60px;
    --container-max: 1200px;
    --transition-fast: 0.15s;
    --transition-normal: 0.25s;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
}

/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Base */
html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    min-height: 100vh;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

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

/* Header */
header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

header .container {
    height: var(--header-height);
    display: flex;
    align-items: center;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    text-decoration: none;
    color: white;
    letter-spacing: -0.5px;
}

.logo:hover {
    color: white;
    opacity: 0.9;
}

/* Dropdown Navigation */
.nav-dropdown {
    position: relative;
}

.nav-dropdown > a {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    border-radius: 6px;
    transition: background-color var(--transition-fast);
}

.nav-dropdown > a::after {
    content: '▼';
    margin-left: 6px;
    font-size: 0.6em;
    opacity: 0.9;
    transition: transform var(--transition-fast);
}

.nav-dropdown:hover > a {
    background-color: rgba(255, 255, 255, 0.15);
}

.nav-dropdown:hover > a::after {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 4px);
    left: 50%;
    right: auto;
    background: linear-gradient(135deg, var(--primary-dark) 0%, #0f3a92 80%);
    min-width: 100px;
    width: max-content;
    max-width: 240px;
    border-radius: 10px;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), 
                transform var(--transition-normal), 
                visibility var(--transition-normal);
    padding: 6px 12px;
    backdrop-filter: blur(10px);
    list-style: none !important;
    margin: 0;
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-menu li {
    padding: 0;
    list-style: none !important;
    margin: 0;
}

.dropdown-menu a {
    display: flex;
    align-items: center;
    padding: 10px 18px;
    color: white !important;
    transition: background-color var(--transition-fast);
    white-space: nowrap;
    font-weight: 500;
}

.dropdown-menu a::before {
    display: none !important;
}

.dropdown-menu a:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: opacity var(--transition-fast);
    padding: 8px 0;
}

.nav-links a:hover {
    opacity: 0.8;
    color: white;
}

.lang-switch {
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background var(--transition-fast);
}

.lang-switch:hover {
    background: rgba(255,255,255,0.3);
}

/* Mobile menu toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
}

/* Hero Section - GLFW Style */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 80px 0 100px;
    text-align: center;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.hero .subtitle {
    font-size: 1.4rem;
    opacity: 0.95;
    max-width: 700px;
    margin: 0 auto 24px;
    font-weight: 400;
}

.hero .tagline {
    font-size: 1.1rem;
    opacity: 0.8;
    max-width: 100%;
    margin: 0 auto 40px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Badges */
.badges {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 40px;
}

.badges img {
    height: 22px;
}

/* Buttons */
.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
    border: 2px solid transparent;
    cursor: pointer;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-primary:hover {
    background: var(--bg-secondary);
    color: var(--primary-dark);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.1);
    color: white;
}

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

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

.btn-download {
    background: var(--secondary-color);
    color: white;
}

.btn-download:hover {
    background: #059669;
    color: white;
}

.btn-download .version {
    margin-left: 8px;
    padding: 2px 8px;
    background: rgba(255,255,255,0.2);
    border-radius: 4px;
    font-size: 0.85rem;
}

/* Download Section */
.download-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.download-header {
    text-align: center;
    margin-bottom: 50px;
}

.download-header h2 {
    font-size: 2.2rem;
    margin-bottom: 12px;
}

.download-header p {
    color: var(--text-light);
    font-size: 1.1rem;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.download-platform {
    background: white;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.download-platform:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.download-platform .platform-icon {
    font-size: 3rem;
    margin-bottom: 12px;
}

.download-platform h4 {
    font-size: 1.2rem;
    margin-bottom: 16px;
    color: var(--text-color);
}

.download-link {
    display: block;
    padding: 10px 16px;
    margin: 8px 0;
    background: var(--bg-secondary);
    border-radius: 6px;
    color: var(--primary-color);
    font-size: 0.9rem;
    transition: background var(--transition-fast);
    word-break: break-all;
}

.download-link:hover {
    background: var(--bg-tertiary);
    color: var(--primary-dark);
}

.download-footer {
    text-align: center;
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.download-loading {
    text-align: center;
    padding: 40px;
    color: var(--text-light);
}

/* Section Title */
.section-title {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 50px;
    color: var(--text-color);
}

/* Features Section */
.features {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.feature-card {
    background: white;
    padding: 32px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* Platforms Section */
.platforms {
    padding: 80px 0;
}

.platform-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}

.platform-item {
    padding: 32px 24px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: border-color var(--transition-normal), transform var(--transition-normal);
}

.platform-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-4px);
}

.platform-item h4 {
    margin-top: 16px;
    font-size: 1.2rem;
}

.platform-item p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-top: 6px;
}

/* Code Section */
.code-section {
    padding: 80px 0;
    background: var(--code-bg);
    color: white;
}

.code-section .section-title {
    color: white;
}

.code-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
}

.code-tab {
    background: rgba(255,255,255,0.1);
    border: none;
    color: white;
    padding: 10px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    transition: background var(--transition-fast);
}

.code-tab:hover,
.code-tab.active {
    background: rgba(255,255,255,0.2);
}

.code-block {
    background: #1E1E1E;
    border-radius: 12px;
    padding: 30px;
    overflow-x: auto;
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid #333;
}

.code-block pre {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', monospace;
    font-size: 0.9rem;
    line-height: 1.7;
    margin: 0;
}

.code-block code {
    background: transparent;
    color: #d4d4d4;
}

.code-content {
    display: none;
}

.code-content.active {
    display: block;
}

/* Install Section */
.install {
    padding: 80px 0;
}

.install-methods {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.install-method {
    background: white;
    padding: 36px;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    min-height: 200px;
    display: flex;
    flex-direction: column;
}

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

.install-method h3 {
    margin-bottom: 20px;
    color: var(--primary-color);
    font-size: 1.3rem;
    font-weight: 600;
}

.install-method pre {
    background: #1E1E1E;
    padding: 24px;
    border-radius: 8px;
    overflow-x: auto;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', monospace;
    font-size: 0.88rem;
    line-height: 1.9;
    margin: 0;
    border: 1px solid #333;
    flex: 1;
}

.install-method pre code {
    background: transparent;
    color: #d4d4d4;
    white-space: pre;
    word-wrap: normal;
    display: block;
}

/* Requirements Section */
.requirements {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.requirements-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.requirements-table th,
.requirements-table td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.requirements-table th {
    background: var(--primary-color);
    color: white;
    font-weight: 600;
}

.requirements-table tr:last-child td {
    border-bottom: none;
}

.requirements-table tr:hover {
    background: var(--bg-secondary);
}

/* Footer */
footer {
    background: var(--text-color);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    margin-bottom: 20px;
    font-size: 1.1rem;
    font-weight: 600;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section a {
    color: rgba(255,255,255,0.7);
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.6);
}

/* Language Support */
.lang-en, .lang-zh {
    display: none !important;
}

html[lang="en"] .lang-en {
    display: block !important;
}

html[lang="zh"] .lang-zh {
    display: block !important;
}

/* Inline elements */
html[lang="en"] .lang-en-inline,
html[lang="en"] span.lang-en,
html[lang="en"] a.lang-en,
html[lang="en"] button.lang-en {
    display: inline !important;
}

html[lang="zh"] .lang-zh-inline,
html[lang="zh"] span.lang-zh,
html[lang="zh"] a.lang-zh,
html[lang="zh"] button.lang-zh {
    display: inline !important;
}

/* List items */
html[lang="en"] li.lang-en {
    display: list-item !important;
}

html[lang="zh"] li.lang-zh {
    display: list-item !important;
}

/* Flex children */
html[lang="en"] .lang-en.flex-item {
    display: flex !important;
}

html[lang="zh"] .lang-zh.flex-item {
    display: flex !important;
}

/* Documentation page specific styles */
.doc-layout {
    display: flex;
    min-height: calc(100vh - var(--header-height));
    background: #E8E8E8;
}

.doc-sidebar {
    width: 260px;
    background: #F5F5F5;
    border-right: 1px solid var(--border-color);
    padding: 24px;
    position: sticky;
    top: var(--header-height);
    height: calc(100vh - var(--header-height));
    overflow-y: auto;
}

.doc-sidebar h3 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-light);
    margin-bottom: 12px;
    margin-top: 24px;
}

.doc-sidebar h3:first-child {
    margin-top: 0;
}

.doc-sidebar ul {
    list-style: none;
}

.doc-sidebar li a {
    display: block;
    padding: 8px 12px;
    color: var(--text-color);
    border-radius: 6px;
    transition: background var(--transition-fast);
}

.doc-sidebar li a:hover,
.doc-sidebar li a.active {
    background: white;
    color: var(--primary-color);
}

.doc-content {
    flex: 1;
    padding: 40px 60px;
    max-width: 900px;
}

.doc-content h1 {
    font-size: 2rem;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.doc-content h2 {
    font-size: 1.5rem;
    margin-top: 40px;
    margin-bottom: 16px;
    color: var(--text-color);
}

.doc-content h3 {
    font-size: 1.2rem;
    margin-top: 32px;
    margin-bottom: 12px;
}

.doc-content p {
    margin-bottom: 16px;
    line-height: 1.8;
}

.doc-content code {
    background: var(--bg-secondary);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', monospace;
    font-size: 0.9em;
}

.doc-content pre {
    background: #1E1E1E;
    padding: 20px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 16px 0;
    border: 1px solid #333;
}

.doc-content pre code {
    background: none !important;
    padding: 0;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', monospace;
    font-size: 0.9em;
    color: #d4d4d4;
}

/* Markdown-rendered content styling */
.doc-content ul, .doc-content ol {
    margin-bottom: 16px;
    padding-left: 24px;
}

.doc-content li {
    margin-bottom: 8px;
    line-height: 1.7;
}

.doc-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.doc-content th,
.doc-content td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.doc-content th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-color);
}

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

.doc-content tr:hover {
    background: var(--bg-secondary);
}

.doc-content blockquote {
    border-left: 4px solid var(--primary-color);
    padding: 12px 20px;
    margin: 16px 0;
    background: var(--bg-secondary);
    border-radius: 0 8px 8px 0;
}

.doc-content blockquote p {
    margin-bottom: 0;
}

.doc-content a {
    color: var(--primary-color);
    text-decoration: none;
}

.doc-content a:hover {
    text-decoration: underline;
}

.doc-loading {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .doc-sidebar {
        display: none;
    }
    
    .doc-content {
        padding: 30px;
        max-width: none;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--primary-dark);
        flex-direction: column;
        padding: 20px;
        gap: 0;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links li {
        width: 100%;
    }
    
    .nav-links a {
        display: block;
        padding: 12px 0;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero .subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .platform-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid,
    .install-methods {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .platform-grid {
        grid-template-columns: 1fr;
    }
    
    .download-grid {
        grid-template-columns: 1fr;
    }
}