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

:root {
    /* Dark Theme Colors */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --bg-card: #1c2128;
    --bg-code: #0d1117;
    
    /* Text Colors */
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --text-muted: #656d76;
    --text-inverse: #24292f;
    
    /* Accent Colors */
    --accent-primary: #58a6ff;
    --accent-secondary: #bd561d;
    --accent-success: #3fb950;
    --accent-warning: #d29922;
    --accent-error: #f85149;
    
    /* Brand Colors */
    --brand-blue: #58a6ff;
    --brand-orange: #ff7b54;
    --brand-purple: #bc8df8;
    --brand-green: #3fb950;
    
    /* Borders */
    --border-default: #30363d;
    --border-muted: #21262d;
    --border-subtle: #484f58;
    
    /* Shadows */
    --shadow-small: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-medium: 0 3px 6px rgba(0, 0, 0, 0.4);
    --shadow-large: 0 8px 25px rgba(0, 0, 0, 0.5);
    
    /* Typography */
    --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
    --font-system: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Breakpoints */
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-system);
    line-height: 1.6;
    font-size: 16px;
    scroll-behavior: smooth;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(13, 17, 23, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-default);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

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

.nav-logo {
    font-size: 1.25rem;
}

.nav-links {
    display: flex;
    gap: var(--space-xl);
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: var(--text-primary);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, rgba(88, 166, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    text-align: center;
    position: relative;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--brand-blue) 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--brand-blue);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-align: center;
}

.hero-cta {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}

.cta-button {
    padding: 12px 24px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.2s ease;
    border: 2px solid transparent;
    display: inline-block;
}

.cta-button.primary {
    background-color: var(--brand-blue);
    color: var(--text-inverse);
}

.cta-button.primary:hover {
    background-color: #4493f8;
    transform: translateY(-1px);
    box-shadow: var(--shadow-medium);
}

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

.cta-button.secondary:hover {
    border-color: var(--brand-blue);
    color: var(--brand-blue);
    background-color: rgba(88, 166, 255, 0.1);
}

.hero-urgency {
    color: var(--accent-warning);
    font-size: 0.875rem;
    font-weight: 500;
}

/* Section Styles */
section {
    padding: 80px 0;
}

section:nth-child(even) {
    background-color: var(--bg-secondary);
}

h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    text-align: center;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--space-2xl);
}

/* How It Works */
.process-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
    max-width: 800px;
    margin: 0 auto;
}

.step {
    flex: 1;
    min-width: 200px;
    text-align: center;
    padding: var(--space-lg);
    background-color: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border-default);
}

.step-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.step h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.step p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.step-arrow {
    font-size: 1.5rem;
    color: var(--brand-blue);
    font-weight: bold;
}

@media (max-width: 768px) {
    .step-arrow {
        display: none;
    }
    
    .process-steps {
        flex-direction: column;
    }
}

/* Two Column Layout */
.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.two-column.reverse {
    direction: rtl;
}

.two-column.reverse > * {
    direction: ltr;
}

@media (max-width: 1024px) {
    .two-column {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
        text-align: center;
    }
}

.column-text h2 {
    text-align: left;
    margin-bottom: var(--space-lg);
}

.column-text h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--brand-blue);
}

.benefit-list {
    list-style: none;
    margin-bottom: var(--space-lg);
}

.benefit-list li {
    padding: var(--space-sm) 0;
    color: var(--text-secondary);
    font-size: 1rem;
}

.benefit-list strong {
    color: var(--text-primary);
}

.integration-note, .get-started, .neutrality-note {
    padding: var(--space-md);
    background-color: var(--bg-card);
    border-left: 4px solid var(--brand-green);
    border-radius: 4px;
    margin-bottom: var(--space-md);
    font-size: 0.9rem;
}

.neutrality-note {
    border-left-color: var(--brand-purple);
    font-style: italic;
}

/* Trust Score Demo */
.trust-score-demo, .badge-examples {
    background-color: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: 12px;
    padding: var(--space-lg);
}

.demo-header {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--text-secondary);
    text-align: center;
}

.agent-listing {
    background-color: var(--bg-tertiary);
    border-radius: 8px;
    padding: var(--space-lg);
}

.agent-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
}

.agent-info h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.trust-badge {
    background-color: var(--brand-green);
    color: var(--text-inverse);
    padding: var(--space-xs) var(--space-sm);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.trust-badge.verified {
    background-color: var(--brand-blue);
}

.trust-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: var(--space-md);
}

.metric {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.metric-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--brand-green);
}

/* Badge Examples */
.badge-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

.badge-example {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.badge-example span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* API Section */
.api-section {
    background-color: var(--bg-secondary);
}

.api-demo {
    max-width: 800px;
    margin: 0 auto;
}

.api-example {
    background-color: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: var(--space-lg);
}

.api-example h3 {
    padding: var(--space-lg);
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-default);
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
}

.api-example pre {
    padding: var(--space-lg);
    margin: 0;
    background-color: var(--bg-code);
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.5;
}

.api-example code {
    color: var(--brand-green);
    font-family: var(--font-mono);
}

.api-response {
    border-top: 1px solid var(--border-default);
}

.api-response h4 {
    padding: var(--space-md) var(--space-lg) 0;
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.api-links {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
}

.api-link {
    padding: 10px 20px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: 6px;
    color: var(--brand-blue);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
}

.api-link:hover {
    background-color: var(--bg-tertiary);
    transform: translateY(-1px);
}

/* Open Source Section */
.open-source {
    text-align: center;
}

.open-source-content h2 {
    margin-bottom: var(--space-lg);
}

.open-source-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.open-source-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}

.open-source-stats .stat {
    background-color: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: 8px;
    padding: var(--space-lg);
    min-width: 150px;
}

.github-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 12px 24px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: 6px;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s ease;
}

.github-link:hover {
    background-color: var(--bg-tertiary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-medium);
}

/* Pricing Section */
.pricing {
    background-color: var(--bg-secondary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-2xl);
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: 12px;
    padding: var(--space-2xl);
    position: relative;
    transition: transform 0.2s ease;
}

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

.pricing-card.featured {
    border-color: var(--brand-blue);
    background-color: var(--bg-tertiary);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--brand-blue);
    color: var(--text-inverse);
    padding: var(--space-xs) var(--space-md);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--brand-blue);
}

.price span {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.pricing-features ul {
    list-style: none;
    margin-bottom: var(--space-xl);
}

.pricing-features li {
    padding: var(--space-sm) 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.pricing-features li:first-child {
    border-bottom: 1px solid var(--border-default);
    padding-bottom: var(--space-md);
    margin-bottom: var(--space-md);
    font-weight: 600;
}

.pricing-note {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-style: italic;
    text-align: center;
}

/* Footer */
.footer {
    background-color: var(--bg-tertiary);
    border-top: 1px solid var(--border-default);
    padding: var(--space-3xl) 0 var(--space-2xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    font-weight: 600;
    font-size: 1.25rem;
}

.footer-logo {
    font-size: 1.5rem;
}

.footer-tagline {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-section h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

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

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

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.footer-section a:hover {
    color: var(--brand-blue);
}

.footer-bottom {
    border-top: 1px solid var(--border-default);
    padding-top: var(--space-lg);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

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

.footer-contact a {
    color: var(--brand-blue);
    text-decoration: none;
}

.footer-contact a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
    }
    
    section {
        padding: 60px 0;
    }
    
    h2 {
        font-size: 1.875rem;
    }
    
    .column-text h2 {
        text-align: center;
    }
    
    .badge-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus states for accessibility */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--brand-blue);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    nav {
        display: none;
    }
    
    .hero {
        padding-top: 2rem;
    }
    
    * {
        background-color: white !important;
        color: black !important;
        box-shadow: none !important;
    }
}

/* What Exists Today Section */
.what-exists {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.exists-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.exists-item {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-default);
    text-align: center;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.exists-item:hover {
    transform: translateY(-2px);
    border-color: var(--accent-primary);
}

.exists-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.exists-item h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.exists-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Design Partnership Section */
.design-partnership {
    padding: 6rem 0;
    background: var(--bg-primary);
}

.partnership-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.partnership-card {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: 12px;
    padding: 2rem;
    text-align: left;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.partnership-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent-primary);
}

.partnership-header h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.partnership-features {
    margin-bottom: 2rem;
}

.partnership-features ul {
    list-style: none;
    padding: 0;
}

.partnership-features li {
    color: var(--text-secondary);
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-muted);
}

.partnership-features li:last-child {
    border-bottom: none;
}

.partnership-note {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-style: italic;
}