/* TouchDesigner Documentation Wiki - Main Stylesheet */

/* CSS Variables for TouchDesigner Theme */
:root {
    /* TouchDesigner Brand Colors */
    --td-orange: #ff6600;
    --td-orange-light: #ff8533;
    --td-orange-dark: #cc5200;
    --td-blue: #0066cc;
    --td-blue-light: #3399ff;
    --td-blue-dark: #004499;
    
    /* Grayscale */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Semantic Colors */
    --primary: var(--td-orange);
    --primary-light: var(--td-orange-light);
    --primary-dark: var(--td-orange-dark);
    --secondary: var(--td-blue);
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', Monaco, Inconsolata, 'Roboto Mono', 'Source Code Pro', monospace;
    
    /* Layout */
    --container-max-width: 1200px;
    --header-height: 70px;
    --sidebar-width: 280px;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Border radius */
    --radius-sm: 0.125rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition: all 0.2s ease-in-out;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.25;
    margin-bottom: var(--space-md);
    color: var(--gray-900);
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.875rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--space-md);
}

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

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

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

/* Header Styles */
.main-header {
    background: white;
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
}

.main-nav {
    height: var(--header-height);
}

.nav-container {
    display: flex;
    align-items: center;
    height: 100%;
    gap: var(--space-lg);
}

.nav-brand {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--gray-900);
    text-decoration: none;
}

.brand-link:hover {
    color: var(--primary);
    text-decoration: none;
}

.brand-logo {
    height: 32px;
    width: 32px;
}

.brand-text {
    color: var(--gray-700);
}

/* Navigation Search */
.nav-search {
    flex: 1;
    max-width: 500px;
}

.search-form {
    position: relative;
}

.search-input-container {
    display: flex;
    position: relative;
}

.search-input {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    padding-right: 3rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    background: var(--gray-50);
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    background: white;
    box-shadow: 0 0 0 3px rgba(255, 102, 0, 0.1);
}

.search-button {
    position: absolute;
    right: var(--space-xs);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    padding: var(--space-sm);
    cursor: pointer;
    color: var(--gray-400);
    transition: var(--transition);
}

.search-button:hover {
    color: var(--primary);
}

.search-icon {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

/* Navigation Links */
.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    flex-shrink: 0;
}

.nav-link {
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-weight: 500;
    color: var(--gray-600);
    transition: var(--transition);
    text-decoration: none;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background-color: var(--gray-100);
    text-decoration: none;
}

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

.dropdown-trigger {
    background: none;
    border: none;
    cursor: pointer;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 50;
}

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

.dropdown-item {
    display: block;
    padding: var(--space-sm) var(--space-md);
    color: var(--gray-700);
    text-decoration: none;
    transition: var(--transition);
}

.dropdown-item:hover {
    background-color: var(--gray-100);
    color: var(--primary);
    text-decoration: none;
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    padding: var(--space-sm);
    cursor: pointer;
}

.hamburger-line {
    width: 24px;
    height: 2px;
    background-color: var(--gray-600);
    transition: var(--transition);
}

.mobile-nav {
    display: none;
    background: white;
    border-top: 1px solid var(--gray-200);
    padding: var(--space-md);
}

.mobile-nav-link {
    display: block;
    padding: var(--space-md);
    color: var(--gray-700);
    text-decoration: none;
    border-bottom: 1px solid var(--gray-100);
}

.mobile-nav-link:hover {
    color: var(--primary);
    background-color: var(--gray-50);
    text-decoration: none;
}

.mobile-nav-section {
    margin: var(--space-md) 0;
}

.mobile-nav-title {
    font-weight: 600;
    color: var(--gray-900);
    padding: var(--space-sm) var(--space-md);
    background-color: var(--gray-100);
}

/* Main Content */
.main-content {
    min-height: calc(100vh - var(--header-height) - 200px);
    padding: var(--space-xl) 0;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: var(--space-2xl) 0;
    margin-bottom: var(--space-2xl);
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: white;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--space-xl);
    opacity: 0.9;
}

.hero-search {
    margin-bottom: var(--space-xl);
}

.hero-search-form {
    max-width: 600px;
    margin: 0 auto;
}

.search-container {
    display: flex;
    gap: var(--space-sm);
}

.hero-search-input {
    flex: 1;
    padding: var(--space-md) var(--space-lg);
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    box-shadow: var(--shadow-md);
}

.hero-search-input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

.hero-search-button {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: white;
    color: var(--primary);
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.hero-search-button:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: white;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-title {
    font-size: 2.25rem;
    color: var(--gray-900);
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* Categories Grid */
.categories-section {
    margin-bottom: var(--space-2xl);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.category-card {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-xl);
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    text-decoration: none;
    border-color: var(--primary);
}

.category-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-lg);
    color: white;
}

.category-icon svg {
    width: 32px;
    height: 32px;
    fill: currentColor;
}

.category-content {
    flex: 1;
}

.category-name {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-sm);
}

.category-stats {
    margin-bottom: var(--space-sm);
}

.category-count {
    font-size: 0.875rem;
    color: var(--primary);
    font-weight: 600;
}

.category-description {
    color: var(--gray-600);
    font-size: 0.875rem;
    line-height: 1.5;
}

.category-arrow {
    flex-shrink: 0;
    font-size: 1.5rem;
    color: var(--gray-400);
    transition: var(--transition);
}

.category-card:hover .category-arrow {
    color: var(--primary);
    transform: translateX(4px);
}

/* Operators Grid */
.operators-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.operator-card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-lg);
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

.operator-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    text-decoration: none;
    border-color: var(--primary);
}

.operator-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

.operator-category {
    background: var(--primary);
    color: white;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.operator-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
}

.operator-description {
    color: var(--gray-600);
    margin-bottom: var(--space-md);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.operator-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 0.875rem;
    color: var(--gray-500);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
}

.btn:hover {
    background: var(--primary-dark);
    color: white;
    text-decoration: none;
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--gray-600);
}

.btn-secondary:hover {
    background: var(--gray-700);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

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

/* Footer */
.main-footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--space-2xl) 0 var(--space-lg);
    margin-top: var(--space-2xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-section h3 {
    color: white;
    margin-bottom: var(--space-md);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    color: var(--gray-300);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--gray-800);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-copyright {
    color: var(--gray-400);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-search,
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        gap: var(--space-md);
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .category-card {
        flex-direction: column;
        text-align: center;
    }
    
    .operators-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-sm);
    }
    
    .hero-section {
        padding: var(--space-xl) 0;
    }
    
    .search-container {
        flex-direction: column;
    }
    
    .hero-search-button {
        justify-content: center;
    }
}

/* Print Styles */
@media print {
    .main-header,
    .main-footer,
    .hero-section {
        display: none;
    }
    
    .main-content {
        padding: 0;
    }
    
    * {
        box-shadow: none !important;
    }
}