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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

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

.header {
    padding: 2rem 0;
    text-align: center;
}

.logo h1 {
    font-size: 3rem;
    color: white;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.tagline {
    color: #f0f0f0;
    font-size: 1.2rem;
    font-style: italic;
}

.main-content {
    background: white;
    border-radius: 20px;
    padding: 3rem;
    margin: 2rem 0;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.hero {
    text-align: center;
    margin-bottom: 3rem;
}

.hero-content h2 {
    font-size: 2.5rem;
    color: #4a5568;
    margin-bottom: 1rem;
}

.hero-description {
    font-size: 1.2rem;
    color: #718096;
    max-width: 600px;
    margin: 0 auto 3rem;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: #f7fafc;
    padding: 2rem;
    border-radius: 15px;
    border-left: 4px solid #667eea;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.feature-card h3 {
    color: #4a5568;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.cta-section {
    text-align: center;
    padding: 3rem;
    background: #f7fafc;
    border-radius: 15px;
    margin: 3rem 0;
}

.cta-section h3 {
    color: #4a5568;
    margin-bottom: 2rem;
    font-size: 1.8rem;
}

.interest-form {
    max-width: 400px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group input {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.cta-button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border-radius: 10px;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    width: 100%;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 10px;
    display: none;
}

.form-message.success {
    background: #c6f6d5;
    color: #22543d;
    display: block;
}

.form-message.error {
    background: #fed7d7;
    color: #742a2a;
    display: block;
}

.api-demo {
    text-align: center;
    padding: 2rem;
}

.api-button {
    background: #48bb78;
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 10px;
    cursor: pointer;
    font-size: 1rem;
    margin-bottom: 1rem;
    transition: background 0.3s ease;
}

.api-button:hover {
    background: #38a169;
}

.api-response {
    background: #f7fafc;
    padding: 1rem;
    border-radius: 10px;
    text-align: left;
    white-space: pre-wrap;
    font-family: monospace;
    display: none;
}

.api-response.show {
    display: block;
}

.footer {
    text-align: center;
    padding: 2rem 0;
    color: white;
}

@media (max-width: 768px) {
    .logo h1 {
        font-size: 2rem;
    }
    
    .main-content {
        padding: 2rem 1rem;
        margin: 1rem 0;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
}