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

:root {
    --color-bg: #0a0a0a;
    --color-bg-secondary: #111111;
    --color-text: #e5e5e5;
    --color-text-muted: #888888;
    --color-primary: #10b981;
    --color-primary-hover: #059669;
    --color-accent: #3b82f6;
    --color-border: #262626;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', monospace;
}

html {
    scroll-behavior: smooth;
}

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

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

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

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-text);
    text-decoration: none;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

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

.btn-nav {
    background: var(--color-primary);
    color: white !important;
    padding: 8px 16px;
    border-radius: 6px;
}

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

/* Hero */
.hero {
    padding: 160px 0 100px;
    text-align: center;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
}

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

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

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

.btn-primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    border-color: var(--color-text-muted);
    transform: translateY(-2px);
}

/* About Section */
.about {
    padding: 100px 0;
    text-align: center;
}

.about h2 {
    font-size: 2rem;
    margin-bottom: 24px;
}

.about > .container > p {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto 16px;
}

.values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
    margin-top: 60px;
}

.value {
    padding: 32px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 12px;
}

.value h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
    color: var(--color-primary);
}

.value p {
    color: var(--color-text-muted);
}

/* Content Preview */
.content-preview {
    padding: 100px 0;
    background: var(--color-bg-secondary);
}

.content-preview h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 60px;
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.content-item {
    padding: 32px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
}

.content-item h3 {
    font-size: 1.125rem;
    margin-bottom: 12px;
}

.content-item p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

/* Tech Stack */
.tech-stack {
    padding: 80px 0;
    text-align: center;
}

.tech-stack h2 {
    font-size: 2rem;
    margin-bottom: 40px;
}

.tech-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.tech-tag {
    padding: 8px 20px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
}

/* Pricing */
.pricing {
    padding: 100px 0;
    background: var(--color-bg-secondary);
}

.pricing h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 60px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.pricing-card {
    padding: 32px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    position: relative;
}

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

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: white;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.pricing-card h3 {
    font-size: 1.25rem;
    margin-bottom: 16px;
}

.price {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 24px;
}

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

.pricing-card ul {
    list-style: none;
    margin-bottom: 32px;
}

.pricing-card li {
    padding: 8px 0;
    color: var(--color-text-muted);
    font-size: 0.95rem;
    border-bottom: 1px solid var(--color-border);
}

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

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

/* Newsletter */
.newsletter {
    padding: 100px 0;
    text-align: center;
}

.newsletter h2 {
    font-size: 2rem;
    margin-bottom: 16px;
}

.newsletter > .container > p {
    color: var(--color-text-muted);
    margin-bottom: 32px;
}

.newsletter-form {
    display: flex;
    gap: 12px;
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 14px 20px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
    font-size: 1rem;
}

.newsletter-form input::placeholder {
    color: var(--color-text-muted);
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.newsletter-note {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 16px;
}

.newsletter-message {
    min-height: 1.5rem;
    margin-top: 12px;
    font-size: 0.95rem;
}

.newsletter-message.success {
    color: var(--color-accent);
}

.newsletter-message.error {
    color: #ef4444;
}

.newsletter-form button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Footer */
.footer {
    padding: 60px 0 30px;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-brand p {
    color: var(--color-text-muted);
    margin-top: 8px;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 80px;
}

.footer-column h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: 16px;
}

.footer-column a {
    display: block;
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.9rem;
    margin-bottom: 8px;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

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

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

    .nav-links {
        gap: 16px;
    }

    .footer-content {
        flex-direction: column;
        gap: 40px;
    }

    .footer-links {
        gap: 40px;
    }

    .newsletter-form {
        flex-direction: column;
    }

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

    .tech-grid {
        justify-content: flex-start;
    }
}