/* CSS Variables */
:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --background: #0f172a;
    --surface: #1e293b;
    --surface-hover: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: #334155;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: baseline;
    gap: 0.25rem;
    text-decoration: none;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-sub {
    font-size: 0.875rem;
    color: var(--primary-color);
    font-weight: 500;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

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

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

.nav-cta {
    background: var(--primary-color) !important;
    color: white !important;
}

.nav-cta:hover {
    background: var(--primary-hover) !important;
    color: white !important;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
}

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

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

.btn-secondary {
    background: var(--surface);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

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

.btn-full {
    width: 100%;
}

/* Hero Section */
.hero {
    padding: 8rem 0 4rem;
    text-align: center;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, var(--text-primary), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3rem;
}

.hero-code {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
    max-width: 600px;
    margin: 0 auto;
    text-align: left;
}

.hero-code pre {
    margin: 0;
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 0.875rem;
    color: var(--text-secondary);
    overflow-x: auto;
}

/* Features Section */
.features {
    padding: 4rem 0;
}

.features h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 2rem;
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* How It Works */
.how-it-works {
    padding: 4rem 0;
    background: var(--surface);
}

.how-it-works h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
}

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

.step {
    text-align: center;
}

.step-number {
    width: 3rem;
    height: 3rem;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.step h3 {
    margin-bottom: 0.5rem;
}

.step p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* CTA Section */
.cta {
    padding: 4rem 0;
    text-align: center;
}

.cta h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.cta p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* Pricing */
.pricing-hero {
    padding: 8rem 0 3rem;
    text-align: center;
}

.pricing-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

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

.pricing-plans {
    padding: 2rem 0 4rem;
}

.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    align-items: start;
}

.plan-card {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 2rem;
    position: relative;
}

.plan-card.featured {
    border-color: var(--primary-color);
    transform: scale(1.02);
}

.plan-badge {
    position: absolute;
    top: -0.75rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 1rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.plan-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.plan-header h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.plan-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
}

.price {
    font-size: 3rem;
    font-weight: 700;
}

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

.plan-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.plan-features {
    list-style: none;
    margin-bottom: 2rem;
}

.plan-features li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.plan-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
}

.plan-features li.disabled {
    color: var(--text-secondary);
}

.plan-features li.disabled::before {
    content: '—';
    color: var(--text-secondary);
}

.plan-note {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 1rem;
}

.plans-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1200px) {
    .plans-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .plans-grid-4 {
        grid-template-columns: 1fr;
    }
}

.enterprise-cta {
    margin-top: 3rem;
    text-align: center;
    padding: 2rem;
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
}

.enterprise-cta h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

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

.enterprise-cta a {
    color: var(--primary-color);
    font-weight: 600;
}

/* FAQ */
.faq {
    padding: 4rem 0;
    background: var(--surface);
}

.faq h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.faq-item h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.faq-item p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

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

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.footer-links {
    display: flex;
    gap: 4rem;
}

.footer-column h4 {
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

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

.footer-column a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    line-height: 2;
}

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

.footer-bottom {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .nav-links {
        display: none;
    }

    .footer-content {
        flex-direction: column;
        gap: 2rem;
    }

    .footer-links {
        flex-wrap: wrap;
        gap: 2rem;
    }

    .faq-grid {
        grid-template-columns: 1fr;
    }
}