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

:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-card: #1a2035;
    --text-primary: #f0f0f0;
    --text-secondary: #9ca3af;
    --accent: #f97316;
    --accent-hover: #fb923c;
    --blue: #3b82f6;
    --green: #22c55e;
    --border: #1f2937;
    --radius: 12px;
}

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

h1, h2, h3 {
    font-weight: 700;
    line-height: 1.2;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    color: var(--accent-hover);
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    color: #fff;
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

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

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

.btn-large {
    padding: 18px 40px;
    font-size: 1.125rem;
}

/* ===== Hero ===== */
.hero {
    text-align: center;
    padding: 120px 0 80px;
    background: linear-gradient(180deg, #0f1729 0%, var(--bg-primary) 100%);
}

.hero-icon {
    font-size: 4rem;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.tagline {
    font-size: 1.5rem;
    color: var(--accent);
    margin-bottom: 16px;
    font-weight: 600;
}

.subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
}

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

/* ===== Features ===== */
.features {
    padding: 100px 0;
}

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

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: border-color 0.2s ease;
}

.feature-card:hover {
    border-color: var(--accent);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.feature-card h3 {
    font-size: 1.125rem;
    margin-bottom: 8px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.938rem;
}

/* ===== Tech Stack ===== */
.tech-stack {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.tech-stack h2 {
    text-align: center;
    font-size: 2.25rem;
    margin-bottom: 60px;
}

.stack-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.stack-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
}

.stack-badge {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.stack-card ul {
    list-style: none;
}

.stack-card li {
    padding: 8px 0;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
    font-size: 0.938rem;
}

.stack-card li:last-child {
    border-bottom: none;
}

.stack-card li::before {
    content: "✓ ";
    color: var(--green);
    font-weight: 700;
}

/* ===== Pricing ===== */
.pricing {
    padding: 100px 0;
}

.pricing h2 {
    text-align: center;
    font-size: 2.25rem;
    margin-bottom: 8px;
}

.pricing-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 60px;
    font-size: 1.125rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
    position: relative;
    transition: border-color 0.2s ease;
}

.pricing-card:hover {
    border-color: var(--text-secondary);
}

.pricing-card.popular {
    border-color: var(--accent);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: #fff;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.price {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.pricing-card p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 0.938rem;
}

.pricing-card .btn {
    width: 100%;
}

/* ===== FAQ ===== */
.faq {
    padding: 100px 0;
    background: var(--bg-secondary);
}

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

.faq-list {
    max-width: 700px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--border);
    padding: 24px 0;
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-item h3 {
    font-size: 1.063rem;
    margin-bottom: 8px;
}

.faq-item p {
    color: var(--text-secondary);
    font-size: 0.938rem;
}

/* ===== Final CTA ===== */
.final-cta {
    padding: 100px 0;
    text-align: center;
}

.final-cta h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.final-cta p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 40px;
}

/* ===== Footer ===== */
footer {
    padding: 40px 0;
    border-top: 1px solid var(--border);
    text-align: center;
}

footer p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 12px;
}

.footer-links {
    display: flex;
    gap: 24px;
    justify-content: center;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

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

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .hero {
        padding: 80px 0 60px;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .tagline {
        font-size: 1.25rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .features, .tech-stack, .pricing, .faq, .final-cta {
        padding: 60px 0;
    }

    .features h2, .tech-stack h2, .pricing h2, .faq h2 {
        font-size: 1.75rem;
        margin-bottom: 40px;
    }

    .final-cta h2 {
        font-size: 2rem;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

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

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .cta-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
}