/* ============================================
   TheYardOS Design System
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    /* Colors */
    --bg-primary: #F8FAFC;
    --text-primary: #0F172A;
    --text-muted: #64748B;
    --brand-primary: #10B981;
    --brand-primary-hover: #059669;
    --brand-primary-light: rgba(16, 185, 129, 0.1);
    --brand-accent: #6366F1;
    --brand-accent-hover: #4F46E5;
    --brand-accent-light: rgba(99, 102, 241, 0.1);
    --white: #FFFFFF;
    --border: #E2E8F0;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 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;
    --space-4xl: 6rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    
    /* Radius */
    --radius: 8px;
    --radius-lg: 12px;
    
    /* Transitions */
    --transition: 0.2s ease;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
}

/* ============================================
   Navigation - Glassmorphism
   ============================================ */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) var(--space-xl);
    background: rgba(248, 250, 252, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    transition: background var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
    background: rgba(248, 250, 252, 0.95);
    box-shadow: var(--shadow);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.logo span {
    color: var(--brand-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color var(--transition);
}

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

.nav-cta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.5rem;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition);
}

.btn-primary {
    background: var(--brand-primary);
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--brand-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

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

.btn-secondary:hover {
    background: var(--brand-accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

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

.btn-outline:hover {
    border-color: var(--brand-primary);
    color: var(--brand-primary);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

/* ============================================
   Layout
   ============================================ */

main {
    padding-top: 72px; /* Nav height */
    min-height: 100vh;
}

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

.section {
    padding: var(--space-4xl) 0;
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--space-3xl);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    line-height: 1.2;
    margin: 0 0 var(--space-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.6;
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    padding: var(--space-4xl) 0;
    text-align: center;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--brand-accent-light);
    color: var(--brand-accent);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 9999px;
    margin-bottom: var(--space-lg);
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 3.75rem);
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.04em;
    line-height: 1.1;
    margin: 0 0 var(--space-lg);
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin: 0 0 var(--space-2xl);
    line-height: 1.6;
}

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

.hero-mockup {
    margin-top: var(--space-4xl);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: var(--white);
    border: 1px solid var(--border);
}

.mockup-placeholder {
    aspect-ratio: 16 / 10;
    background: linear-gradient(135deg, var(--brand-primary-light) 0%, var(--brand-accent-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 1rem;
    font-weight: 500;
}

/* ============================================
   Why Switch Section
   ============================================ */

.why-switch {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--space-3xl);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.why-switch-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-2xl);
}

.why-switch-item {
    padding: var(--space-lg);
    border-radius: var(--radius);
    transition: background var(--transition);
}

.why-switch-item:hover {
    background: var(--bg-primary);
}

.why-switch-item .icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.why-switch-item.legacy .icon {
    background: rgba(239, 68, 68, 0.1);
    color: #DC2626;
}

.why-switch-item.theyard .icon {
    background: var(--brand-primary-light);
    color: var(--brand-primary);
}

.why-switch-item h3 {
    font-size: 1rem;
    font-weight: 700;
    margin: 0 0 var(--space-sm);
    color: var(--text-primary);
}

.why-switch-item p {
    font-size: 0.9375rem;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.5;
}

/* ============================================
   Bento Grid
   ============================================ */

.bento-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: auto auto;
    gap: var(--space-lg);
}

.bento-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    overflow: hidden;
}

.bento-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.bento-card.featured {
    grid-column: span 2;
    grid-row: span 2;
    background: linear-gradient(135deg, var(--brand-primary-light) 0%, var(--brand-accent-light) 100%);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.bento-card.ai {
    border-left: 4px solid var(--brand-accent);
}

.bento-card.standard {
    border-left: 4px solid var(--brand-primary);
}

.bento-card .badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--space-xs) var(--space-sm);
    border-radius: 4px;
    margin-bottom: var(--space-md);
}

.bento-card.ai .badge {
    background: var(--brand-accent-light);
    color: var(--brand-accent);
}

.bento-card.standard .badge {
    background: var(--brand-primary-light);
    color: var(--brand-primary);
}

.bento-card.featured .badge {
    background: rgba(255, 255, 255, 0.9);
    color: var(--brand-primary);
}

.bento-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin: 0 0 var(--space-sm);
    color: var(--text-primary);
}

.bento-card p {
    font-size: 0.9375rem;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.5;
}

.bento-card .mockup-placeholder {
    aspect-ratio: 16 / 9;
    margin-top: var(--space-lg);
    border-radius: var(--radius);
}

.bento-card.featured .mockup-placeholder {
    aspect-ratio: 16 / 12;
}

/* ============================================
   Niche Tabs
   ============================================ */

.niche-tabs {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.niche-tab-list {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-2xl);
    padding: var(--space-sm);
    background: var(--bg-primary);
    border-radius: var(--radius);
    overflow-x: auto;
}

.niche-tab {
    flex: 1;
    min-width: 140px;
    padding: var(--space-md) var(--space-lg);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-muted);
    background: transparent;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
}

.niche-tab:hover {
    color: var(--text-primary);
    background: var(--white);
}

.niche-tab.active {
    background: var(--white);
    color: var(--brand-primary);
    box-shadow: var(--shadow-sm);
}

.niche-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

.niche-panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.niche-panel-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.niche-panel-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 var(--space-md);
    color: var(--text-primary);
}

.niche-panel-text p {
    font-size: 1rem;
    color: var(--text-muted);
    margin: 0 0 var(--space-lg);
    line-height: 1.6;
}

.niche-features {
    list-style: none;
    margin: 0;
    padding: 0;
}

.niche-features li {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
    font-size: 0.9375rem;
    color: var(--text-primary);
}

.niche-features li::before {
    content: "✓";
    color: var(--brand-primary);
    font-weight: 700;
}

.niche-panel-mockup {
    border-radius: var(--radius);
    overflow: hidden;
}

/* ============================================
   Final CTA
   ============================================ */

.cta-banner {
    background: linear-gradient(135deg, var(--brand-primary) 0%, #059669 100%);
    border-radius: var(--radius-lg);
    padding: var(--space-3xl);
    text-align: center;
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

.cta-banner h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 800;
    margin: 0 0 var(--space-md);
    letter-spacing: -0.02em;
}

.cta-banner p {
    font-size: 1.125rem;
    opacity: 0.95;
    margin: 0 0 var(--space-xl);
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

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

.cta-banner .btn:hover {
    background: var(--bg-primary);
    color: var(--brand-primary-hover);
}

/* ============================================
   Footer
   ============================================ */

.site-footer {
    background: var(--white);
    border-top: 1px solid var(--border);
    padding: var(--space-3xl) 0 var(--space-xl);
    margin-top: var(--space-4xl);
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand p {
    font-size: 0.9375rem;
    color: var(--text-muted);
    margin: var(--space-md) 0 0;
    max-width: 280px;
}

.footer-col h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--space-md);
}

.footer-col ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-col a {
    display: block;
    font-size: 0.9375rem;
    color: var(--text-muted);
    text-decoration: none;
    padding: var(--space-xs) 0;
    transition: color var(--transition);
}

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

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

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0;
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 1024px) {
    .bento-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .bento-card.featured {
        grid-column: span 2;
        grid-row: span 1;
    }
    
    .niche-panel-content {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .container {
        padding: 0 var(--space-md);
    }
    
    .hero {
        padding: var(--space-2xl) 0;
    }
    
    .hero-ctas {
        flex-direction: column;
    }
    
    .hero-ctas .btn {
        width: 100%;
    }
    
    .bento-grid {
        grid-template-columns: 1fr;
    }
    
    .bento-card.featured {
        grid-column: span 1;
    }
    
    .niche-tab-list {
        flex-direction: column;
    }
    
    .niche-tab {
        min-width: 100%;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand p {
        max-width: none;
    }
    
    .footer-bottom {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .site-header {
        padding: var(--space-md);
    }
    
    .section {
        padding: var(--space-2xl) 0;
    }
    
    .why-switch {
        padding: var(--space-xl);
    }
    
    .cta-banner {
        padding: var(--space-2xl);
    }
}