/* =============================================================================
   NetScan Documentation - CSS Styles
   A clean, traditional documentation theme
   ============================================================================= */

/* -----------------------------------------------------------------------------
   CSS Variables
   ----------------------------------------------------------------------------- */
:root {
    /* Colors */
    --color-primary: #0066cc;
    --color-primary-dark: #004d99;
    --color-primary-light: #e6f0ff;
    --color-secondary: #6c757d;
    --color-success: #28a745;
    --color-warning: #ffc107;
    --color-danger: #dc3545;
    --color-info: #17a2b8;
    
    /* Text */
    --color-text: #1a1a1a;
    --color-text-light: #4a5568;
    --color-text-muted: #718096;
    
    /* Backgrounds */
    --color-bg: #ffffff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-tertiary: #f1f3f4;
    --color-bg-code: #f6f8fa;
    
    /* Borders */
    --color-border: #e1e4e8;
    --color-border-light: #eaecef;
    
    /* Sidebar */
    --sidebar-width: 280px;
    --toc-width: 220px;
    --nav-height: 60px;
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', SFMono-Regular, Consolas, 'Liberation Mono', Menlo, monospace;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    
    /* Shadows */
    --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);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
    :root {
        --color-text: #e1e4e8;
        --color-text-light: #a0aec0;
        --color-text-muted: #718096;
        --color-bg: #0d1117;
        --color-bg-secondary: #161b22;
        --color-bg-tertiary: #21262d;
        --color-bg-code: #161b22;
        --color-border: #30363d;
        --color-border-light: #21262d;
        --color-primary-light: #1a3a5c;
    }
}

/* -----------------------------------------------------------------------------
   Base Styles
   ----------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--nav-height) + 20px);
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* -----------------------------------------------------------------------------
   Typography
   ----------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 1.75rem; margin-top: var(--spacing-2xl); padding-top: var(--spacing-lg); border-top: 1px solid var(--color-border-light); }
h3 { font-size: 1.35rem; margin-top: var(--spacing-xl); }
h4 { font-size: 1.1rem; margin-top: var(--spacing-lg); }

p {
    margin-top: 0;
    margin-bottom: var(--spacing-md);
}

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

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

ul, ol {
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

li {
    margin-bottom: var(--spacing-xs);
}

code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    padding: 0.2em 0.4em;
    background-color: var(--color-bg-code);
    border-radius: var(--radius-sm);
}

pre {
    margin: 0;
    padding: var(--spacing-md);
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.5;
    background-color: var(--color-bg-code);
    border-radius: var(--radius-md);
}

pre code {
    padding: 0;
    background: none;
}

/* -----------------------------------------------------------------------------
   Top Navigation
   ----------------------------------------------------------------------------- */
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1600px;
    height: 100%;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
}

.logo:hover {
    color: var(--color-text);
    text-decoration: none;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    border-radius: var(--radius-md);
    font-size: 1rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--color-text-light);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-primary);
    text-decoration: none;
}

.github-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--color-text);
    transition: var(--transition-fast);
}

/* -----------------------------------------------------------------------------
   Layout
   ----------------------------------------------------------------------------- */
.main-wrapper {
    display: flex;
    margin-top: var(--nav-height);
    min-height: calc(100vh - var(--nav-height));
}

/* -----------------------------------------------------------------------------
   Sidebar
   ----------------------------------------------------------------------------- */
.sidebar {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: var(--sidebar-width);
    height: calc(100vh - var(--nav-height));
    background-color: var(--color-bg-secondary);
    border-right: 1px solid var(--color-border);
    overflow-y: auto;
    z-index: 100;
}

.sidebar-content {
    padding: var(--spacing-lg);
}

.search-box {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.search-box input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    padding-left: 36px;
    font-size: 0.875rem;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-box input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.nav-section h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.nav-section ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-section li {
    margin: 0;
}

.nav-section a {
    display: block;
    padding: var(--spacing-xs) var(--spacing-sm);
    margin: 2px 0;
    font-size: 0.9rem;
    color: var(--color-text-light);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.nav-section a:hover {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text);
    text-decoration: none;
}

.nav-section a.active {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    font-weight: 500;
}

/* -----------------------------------------------------------------------------
   Main Content
   ----------------------------------------------------------------------------- */
.content {
    flex: 1;
    margin-left: var(--sidebar-width);
    margin-right: var(--toc-width);
    min-width: 0;
}

.doc-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-2xl);
}

/* -----------------------------------------------------------------------------
   Table of Contents
   ----------------------------------------------------------------------------- */
.toc {
    position: fixed;
    top: var(--nav-height);
    right: 0;
    width: var(--toc-width);
    height: calc(100vh - var(--nav-height));
    padding: var(--spacing-xl) var(--spacing-lg);
    overflow-y: auto;
}

.toc-content h4 {
    margin-bottom: var(--spacing-md);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.toc nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.toc nav li {
    margin: 0;
}

.toc nav a {
    display: block;
    padding: var(--spacing-xs) 0;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    border-left: 2px solid transparent;
    padding-left: var(--spacing-sm);
    transition: color var(--transition-fast), border-color var(--transition-fast);
}

.toc nav a:hover,
.toc nav a.active {
    color: var(--color-primary);
    border-left-color: var(--color-primary);
    text-decoration: none;
}

/* -----------------------------------------------------------------------------
   Hero Section
   ----------------------------------------------------------------------------- */
.hero {
    text-align: center;
    padding: var(--spacing-2xl) 0;
    margin-bottom: var(--spacing-2xl);
    border-bottom: 1px solid var(--color-border-light);
}

.hero h1 {
    font-size: 2.75rem;
    margin-bottom: var(--spacing-md);
}

.hero .lead {
    font-size: 1.25rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* -----------------------------------------------------------------------------
   Buttons
   ----------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: white;
    text-decoration: none;
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-bg-secondary);
    border-color: var(--color-text-muted);
    text-decoration: none;
}

/* -----------------------------------------------------------------------------
   Feature Cards
   ----------------------------------------------------------------------------- */
.features {
    margin: var(--spacing-2xl) 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    padding: var(--spacing-lg);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
}

.feature-card p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* -----------------------------------------------------------------------------
   Code Blocks
   ----------------------------------------------------------------------------- */
.code-block {
    margin: var(--spacing-md) 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.copy-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

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

.code-block pre {
    margin: 0;
    border-radius: 0;
}

/* -----------------------------------------------------------------------------
   Info Boxes
   ----------------------------------------------------------------------------- */
.info-box {
    padding: var(--spacing-md) var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    background-color: var(--color-primary-light);
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius-sm);
}

.info-box strong {
    display: block;
    margin-bottom: var(--spacing-sm);
}

.info-box ul {
    margin-bottom: 0;
}

.warning-box {
    background-color: #fff3cd;
    border-left-color: var(--color-warning);
}

.danger-box {
    background-color: #f8d7da;
    border-left-color: var(--color-danger);
}

/* -----------------------------------------------------------------------------
   Requirements Grid
   ----------------------------------------------------------------------------- */
.requirements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.requirement-card {
    padding: var(--spacing-md);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.requirement-card h4 {
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.requirement-card ul {
    margin: 0;
    padding-left: var(--spacing-md);
}

.requirement-card li {
    font-size: 0.9rem;
}

/* -----------------------------------------------------------------------------
   Next Steps
   ----------------------------------------------------------------------------- */
.next-steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.next-step-card {
    display: block;
    padding: var(--spacing-lg);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.next-step-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
    text-decoration: none;
}

.next-step-card h4 {
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.next-step-card p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* -----------------------------------------------------------------------------
   Footer
   ----------------------------------------------------------------------------- */
.doc-footer {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

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

.footer-nav a {
    display: flex;
    flex-direction: column;
    color: var(--color-text);
}

.footer-nav span {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.footer-nav strong {
    font-size: 1rem;
    color: var(--color-primary);
}

.footer-meta {
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.footer-meta p {
    margin-bottom: var(--spacing-sm);
}

/* -----------------------------------------------------------------------------
   Tables
   ----------------------------------------------------------------------------- */
table {
    width: 100%;
    margin: var(--spacing-lg) 0;
    border-collapse: collapse;
    font-size: 0.9rem;
}

th, td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

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

tr:hover {
    background-color: var(--color-bg-secondary);
}

/* -----------------------------------------------------------------------------
   Responsive Design
   ----------------------------------------------------------------------------- */
@media (max-width: 1200px) {
    .toc {
        display: none;
    }
    
    .content {
        margin-right: 0;
    }
}

@media (max-width: 900px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .content {
        margin-left: 0;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-links {
        display: none;
    }
}

@media (max-width: 600px) {
    :root {
        --spacing-lg: 1rem;
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero .lead {
        font-size: 1.1rem;
    }
    
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.2rem; }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
}