/* General Styles */
body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    color: #333;
    background-color: #f9fafb;
    scroll-behavior: smooth;
}

a {
    text-decoration: none;
    color: inherit;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: #ffffff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2563eb;
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    margin: 0;
    padding: 0;
}

.nav-menu li a {
    font-weight: 500;
    color: #4b5563;
    transition: color 0.3s ease;
}

.nav-menu li a:hover {
    color: #2563eb;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}

.hamburger {
    display: block;
    width: 25px;
    height: 3px;
    background-color: #4b5563;
    position: relative;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: #4b5563;
    transition: all 0.3s ease;
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    top: 8px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #2563eb, #1e40af);
    color: #ffffff;
    padding: 4rem 2rem;
    text-align: center;
}

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

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
}

.cta-button {
    background-color: #ffffff;
    color: #2563eb;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: background-color 0.3s ease;
}

.cta-button:hover {
    background-color: #e0f2fe;
}

/* Features Section */
.features {
    padding: 4rem 2rem;
    text-align: center;
}

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

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

.feature-card {
    background-color: #ffffff;
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #2563eb;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: #6b7280;
}

/* Stats Section */
.stats {
    padding: 4rem 2rem;
    background-color: #ffffff;
    text-align: center;
}

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

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.stat-card {
    background-color: #f9fafb;
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.stat-number {
    font-size: 2rem;
    font-weight: 600;
    color: #2563eb;
}

.stat-label {
    color: #6b7280;
}

/* Test API Section */
.test-api {
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #2563eb, #1e40af);
    color: #ffffff;
    text-align: center;
}

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

.test-api p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
}

/* Pricing Section */
.pricing {
    padding: 4rem 2rem;
    background-color: #f9fafb;
    text-align: center;
}

.pricing h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: #2563eb;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-card {
    background-color: #ffffff;
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.2);
}

.pricing-card.popular {
    border: 2px solid #2563eb;
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #2563eb;
    color: #ffffff;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #2563eb;
}

.price {
    font-size: 2rem;
    font-weight: 600;
    color: #1e40af;
    margin-bottom: 1rem;
}

.price span {
    font-size: 1rem;
    color: #6b7280;
}

.features-list {
    list-style: none;
    padding: 0;
    margin-bottom: 2rem;
    text-align: left;
}

.features-list li {
    margin-bottom: 0.5rem;
    color: #6b7280;
}

.subscribe-btn {
    background-color: #2563eb;
    color: #ffffff;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.subscribe-btn:hover {
    background-color: #1e40af;
}

.subscribe-btn:disabled {
    background-color: #9ca3af;
    cursor: not-allowed;
}

/* Footer */
.footer {
    padding: 2rem;
    background-color: #ffffff;
    text-align: center;
    border-top: 1px solid #e5e7eb;
}

.footer-links {
    margin-bottom: 1rem;
}

.footer-links a {
    margin: 0 1rem;
    color: #6b7280;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #2563eb;
}

.footer p {
    color: #6b7280;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        flex-direction: column;
        gap: 1rem;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: #ffffff;
        padding: 1rem;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }

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

    .nav-toggle {
        display: block;
    }

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

    .hero-content p {
        font-size: 1rem;
    }

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