:root {
    --primary-bg: #000000;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --accent-green: #22c55e;
    --accent-green-hover: #16a34a;
    --card-bg: #111111;
    --border-color: #27272a;
    --button-bg: #ffffff;
    --button-text: #000000;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: var(--accent-green);
    border-radius: 50%;
    margin-right: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: white;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
}

/* Hero Section */
.hero {
    padding: 120px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 40%;
    height: 200%;
    background: radial-gradient(ellipse, var(--accent-green) 0%, transparent 70%);
    opacity: 0.1;
    z-index: -1;
}

.hero::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 40%;
    height: 200%;
    background: radial-gradient(ellipse, var(--accent-green) 0%, transparent 70%);
    opacity: 0.1;
    z-index: -1;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 24px;
    line-height: 1.1;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.btn {
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn-primary {
    background-color: var(--button-bg);
    color: var(--button-text);
}

.btn-primary:hover {
    background-color: #f3f4f6;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: var(--card-bg);
    border-color: var(--accent-green);
}

/* Introduction Section */
.introduction {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--card-bg) 0%, var(--primary-bg) 100%);
}

.introduction h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 32px;
    text-align: center;
}

.introduction-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.brand-highlight {
    color: var(--accent-green);
    font-weight: 600;
}

/* Features Grid */
.features {
    padding: 80px 0;
}

.features h2 {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 64px;
}

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

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    transition: all 0.3s ease;
}

.feature-card:hover {
    border-color: var(--accent-green);
    transform: translateY(-4px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--accent-green);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 24px;
}

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

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

/* Pricing Preview */
.pricing-preview {
    padding: 80px 0;
    background: var(--card-bg);
}

.pricing-preview h2 {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 24px;
}

.pricing-preview p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 48px;
    font-size: 1.125rem;
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--primary-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    text-align: center;
    transition: all 0.3s ease;
}

.pricing-card:hover {
    border-color: var(--accent-green);
    transform: translateY(-4px);
}

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

.pricing-card.featured::before {
    content: 'Most Popular';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-green);
    color: white;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

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

.price-period {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* Contact Section */
.contact-cta {
    padding: 80px 0;
    text-align: center;
}

.contact-cta h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 24px;
}

.contact-cta p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Forms */
.form-container {
    max-width: 600px;
    margin: 0 auto;
    padding: 40px;
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    background: var(--primary-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-green);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Contact Info */
.contact-info {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    margin-top: 40px;
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 16px;
}

.contact-item-icon {
    width: 20px;
    height: 20px;
    margin-right: 12px;
    color: var(--accent-green);
}

/* Footer */
footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
    margin-top: 80px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.footer-section p,
.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    line-height: 1.6;
}

.footer-section a:hover {
    color: var(--accent-green);
}

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

/* Thank You Message */
.thank-you {
    display: none;
    text-align: center;
    padding: 40px;
    background: var(--card-bg);
    border: 1px solid var(--accent-green);
    border-radius: 12px;
    margin-top: 20px;
}

.thank-you.show {
    display: block;
}

.thank-you h3 {
    color: var(--accent-green);
    margin-bottom: 16px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--primary-bg);
        border-top: 1px solid var(--border-color);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-toggle {
        display: block;
    }

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

    .hero p {
        font-size: 1.125rem;
    }

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

    .features h2,
    .pricing-preview h2,
    .contact-cta h2 {
        font-size: 2rem;
    }

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

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

    .form-container {
        margin: 0 20px;
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero {
        padding: 80px 0;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .features,
    .pricing-preview,
    .contact-cta {
        padding: 60px 0;
    }
}