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

/* CSS Variables for Theme */
:root {
    --primary-color: #2563EB;
    --primary-hover: #1D4ED8;
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --bg-accent: #F3F4F6;
    --border-color: #E5E7EB;
    --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);
}

[data-theme="dark"] {
    --text-primary: #F9FAFB;
    --text-secondary: #D1D5DB;
    --text-muted: #9CA3AF;
    --bg-primary: #111827;
    --bg-secondary: #1F2937;
    --bg-accent: #374151;
    --border-color: #4B5563;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
}

/* Performance Optimizations */
* {
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

.tab-content, .platform-content {
    will-change: auto;
}

.tab-content.active, .platform-content.active {
    will-change: transform, opacity;
}

/* Typography */
body {
    font-family: 'Noto Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color 0.2s ease, color 0.2s ease;
    font-weight: 400;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Instrument Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

p, li, span, div:not(.hero-title):not(.section-title):not(.stat-number) {
    font-family: 'Noto Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.nav-tab, .integration-tab, .btn {
    font-family: 'Instrument Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.875rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p { margin-bottom: 1rem; }

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Navigation */
.navbar {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 74px;
}

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

.light-logo {
    display: block;
}

.dark-logo {
    display: none;
}

[data-theme="dark"] .light-logo {
    display: none;
}

[data-theme="dark"] .dark-logo {
    display: block;
}

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

.nav-tab {
    background: none;
    border: none;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.15s ease;
    font-family: inherit;
    font-size: 1rem;
}

.nav-tab:hover {
    color: var(--primary-color);
    background-color: var(--bg-accent);
}

.nav-tab.active {
    color: white;
    background-color: var(--primary-color);
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.sun-icon {
    display: block;
}

.moon-icon {
    display: none;
}

[data-theme="dark"] .sun-icon {
    display: none;
}

[data-theme="dark"] .moon-icon {
    display: block;
}

/* Main Content */
.main-content {
    padding-top: 0;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    padding: 6rem 0;
    text-align: center;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), #3B82F6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

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

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

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

.btn-secondary:hover {
    background-color: var(--bg-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Tab Content */
.tab-content {
    display: none;
    opacity: 0;
    transition: opacity 0.15s ease;
}

.tab-content.active {
    display: block;
    opacity: 1;
}

/* Sections */
.section-title {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.features-section,
.platform-section,
.support-section,
.overview-section,
.stats-section,
.integrations-section {
    padding: 6rem 0;
}

.platform-section {
    background-color: var(--bg-secondary);
}

.stats-section {
    background-color: var(--bg-secondary);
}

/* Overview Section */
.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.overview-card {
    background-color: var(--bg-primary);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    opacity: 0;
    transform: translateY(20px);
}

.overview-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.overview-card.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.overview-icon {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
}

.overview-card h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.overview-card p {
    color: var(--text-secondary);
    margin-bottom: 0;
    line-height: 1.6;
}

/* Stats Section */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
    padding: 2rem 1rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: 'Instrument Sans', sans-serif;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.875rem;
}

/* Integration Tabs */
.integration-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.integration-tab {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    background-color: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    font-family: inherit;
    font-size: 1rem;
}

.integration-tab:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
}

.integration-tab.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    transform: translateY(-1px);
}

.integration-tab svg {
    stroke: currentColor;
}

.integration-tab img {
    width: 24px;
    height: 24px;
    object-fit: contain;
    flex-shrink: 0;
}

/* Platform Content */
.platform-content {
    display: none;
    opacity: 0;
    transition: opacity 0.1s ease;
}

.platform-content.active {
    display: block;
    opacity: 1;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background-color: var(--bg-primary);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    opacity: 0;
    transform: translateY(20px);
}

.feature-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.feature-card.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* Documentation Cards */
.documentation-card {
    background-color: var(--bg-primary);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
}

.documentation-card h3 {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

.documentation-card h4 {
    color: var(--text-primary);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.documentation-card p {
    color: var(--text-secondary);
}

.documentation-card ol,
.documentation-card ul {
    margin-bottom: 1rem;
    padding-left: 2rem;
}

.documentation-card li {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

/* Code Blocks */
.code-block {
    background-color: var(--bg-accent);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin: 1rem 0;
    overflow-x: auto;
}

.code-block pre {
    padding: 1.5rem;
    margin: 0;
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
}

.code-block code {
    color: var(--text-primary);
    background: none;
}

/* Support Grid */
.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.support-card {
    background-color: var(--bg-primary);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.support-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.support-card h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.support-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.support-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.support-link:hover {
    color: var(--primary-hover);
}

/* Footer */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand .footer-logo {
    height: 32px;
    width: auto;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-bottom: 0;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1rem;
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    margin-bottom: 0;
}

/* Mobile Navigation */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.mobile-menu-toggle:hover {
    background-color: var(--bg-accent);
    color: var(--text-primary);
}

.mobile-nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 998;
}

.mobile-nav-menu {
    display: none;
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--bg-primary);
    border-left: 1px solid var(--border-color);
    z-index: 999;
    transition: right 0.3s ease;
    padding: 2rem 1rem;
    box-shadow: var(--shadow-xl);
}

.mobile-nav-menu.active {
    right: 0;
}

.mobile-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.mobile-nav-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.mobile-nav-close:hover {
    background-color: var(--bg-accent);
    color: var(--text-primary);
}

.mobile-nav-tabs {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mobile-nav-tab {
    display: block;
    padding: 1rem;
    border-radius: 8px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-family: 'Instrument Sans', sans-serif;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    width: 100%;
}

.mobile-nav-tab:hover {
    background-color: var(--bg-accent);
    color: var(--text-primary);
}

.mobile-nav-tab.active {
    background-color: var(--primary-color);
    color: white;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        gap: 0.5rem;
    }
    
    .nav-tab {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .mobile-nav-overlay.active {
        display: block;
    }
    
    .mobile-nav-menu {
        display: block;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .features-grid,
    .support-grid,
    .overview-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .integration-tabs {
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
    }
    
    .integration-tab {
        width: 100%;
        max-width: 250px;
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .documentation-card {
        padding: 1.5rem;
    }
    
    .code-block pre {
        padding: 1rem;
        font-size: 0.8rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 0.75rem;
    }
    
    .hero-section {
        padding: 4rem 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .features-section,
    .platform-section,
    .support-section {
        padding: 4rem 0;
    }
    
    .documentation-card {
        padding: 1rem;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Simple Scroll Progress Bar */
#scrollProgress {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    height: 4px !important;
    background: linear-gradient(90deg, #2563EB, #3B82F6) !important;
    z-index: 999999 !important;
    pointer-events: none !important;
    margin: 0 !important;
    padding: 0 !important;
    border: none !important;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    box-shadow: 0 1px 3px rgba(37, 99, 235, 0.3) !important;
}

/* Legacy progress bar selectors */
/* .scroll-progress,
.scroll-progress-visible {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    height: 4px !important;
    background: linear-gradient(90deg, #2563EB, #3B82F6) !important;
    z-index: 999999 !important;
    transition: width 0.2s ease !important;
    pointer-events: none !important;
    opacity: 1 !important;
    border: none !important;
    margin: 0 !important;
    padding: 0 !important;
    display: block !important;
    visibility: visible !important;
    box-shadow: 0 1px 3px rgba(37, 99, 235, 0.3) !important;
    transform: translateZ(0) !important;
} */

/* Print Styles */
@media print {
    .navbar,
    .theme-toggle,
    .footer {
        display: none;
    }
    
    .hero-section {
        background: none;
        padding: 2rem 0;
    }
    
    .hero-title {
        color: #000;
        background: none;
        -webkit-text-fill-color: initial;
    }
}