/* CSS Variables */
:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #8b5cf6;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-dark: #111827;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --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);
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.header {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.25rem;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

/* Hero Section */
.hero {
    padding: 100px 0 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

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

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

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

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

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

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

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

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

/* Features Section */
.features {
    padding: 100px 0;
    background-color: var(--bg-secondary);
}

.features h2 {
    text-align: center;
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 60px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.feature-card {
    background-color: var(--bg-primary);
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

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

/* How It Works */
.how-it-works {
    padding: 100px 0;
    background-color: var(--bg-primary);
}

.how-it-works h2 {
    text-align: center;
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 60px;
}

.steps {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}

.step {
    text-align: center;
    max-width: 280px;
}

.step-number {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 24px;
}

.step h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
}

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

/* Page Header */
.page-header {
    padding: 80px 0 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* Content Section */
.content-section {
    padding: 80px 0;
    background-color: var(--bg-primary);
}

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

.content-section h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 24px;
}

.content-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 32px 0 16px;
}

.content-section p {
    margin-bottom: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.content-section ul {
    margin: 16px 0;
    padding-left: 24px;
    color: var(--text-secondary);
}

.content-section li {
    margin-bottom: 8px;
    line-height: 1.8;
}

/* Product Page Specific */
.product-hero {
    padding: 80px 0;
    background-color: var(--bg-secondary);
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.product-content h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 24px;
}

.product-content p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 24px;
}

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

.product-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    font-size: 1.05rem;
}

.product-features .check {
    color: var(--success-color);
    font-weight: bold;
}

.product-visual {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-xl);
    padding: 48px;
    color: white;
    text-align: center;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.product-visual-icon {
    font-size: 6rem;
    margin-bottom: 24px;
}

/* Pricing Page */
.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.pricing-card {
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
    text-align: center;
    border: 2px solid transparent;
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.pricing-card.featured {
    border-color: var(--primary-color);
    position: relative;
}

.pricing-card.featured::before {
    content: "Most Popular";
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--primary-color);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.pricing-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.pricing-card .price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.pricing-card .price-period {
    color: var(--text-light);
    margin-bottom: 32px;
}

.pricing-card ul {
    list-style: none;
    padding: 0;
    margin-bottom: 32px;
    text-align: left;
}

.pricing-card li {
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.pricing-card li::before {
    content: "✓";
    color: var(--success-color);
    font-weight: bold;
}

/* Legal Pages */
.legal-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 60px 0;
}

.legal-content h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.legal-content .last-updated {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 48px;
}

.legal-content h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 48px 0 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--border-color);
}

.legal-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin: 32px 0 12px;
}

.legal-content p {
    margin-bottom: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.legal-content ul, .legal-content ol {
    margin: 16px 0;
    padding-left: 24px;
    color: var(--text-secondary);
}

.legal-content li {
    margin-bottom: 8px;
    line-height: 1.8;
}

/* Footer */
.footer {
    background-color: var(--bg-dark);
    color: white;
    padding: 60px 0 24px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
}

.footer-links {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .steps {
        flex-direction: column;
        align-items: center;
    }
    
    .pricing-cards {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
}