:root {
    --primary-color: #4F46E5;
    --secondary-color: #818CF8;
    --text-color: #1F2937;
    --background-color: #F9FAFB;
    --white: #FFFFFF;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    padding: 4rem 0;
}

h1 {
    font-size: 3.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.subtitle {
    font-size: 1.25rem;
    color: #4B5563;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 4rem 0;
}

.feature {
    text-align: center;
    padding: 2rem;
    background: var(--white);
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.feature:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-section {
    text-align: center;
    padding: 4rem 0;
    margin-top: 2rem;
}

.cta-section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.cta-button {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin-top: 2rem;
}

.cta-button:hover {
    background-color: var(--secondary-color);
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.show {
    display: block;
    opacity: 1;
}

.modal-content {
    background-color: var(--white);
    margin: 5% auto;
    padding: 2.5rem;
    width: 90%;
    max-width: 600px;
    border-radius: 1rem;
    position: relative;
    transform: translateY(-20px);
    transition: transform 0.3s ease;
}

.modal.show .modal-content {
    transform: translateY(0);
}

.close-button {
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: #666;
    transition: color 0.3s ease;
}

.close-button:hover {
    color: var(--text-color);
}

.subscribe-form {
    margin-top: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input[type="email"] {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #D1D5DB;
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input[type="email"]:focus {
    outline: none;
    border-color: var(--primary-color);
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: normal;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
    cursor: pointer;
}

.submit-button {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
    width: 100%;
    margin-top: 1rem;
}

.submit-button:hover {
    background-color: var(--secondary-color);
}

.submit-button:disabled {
    background-color: #9CA3AF;
    cursor: not-allowed;
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        margin: 10% auto;
        width: 95%;
        padding: 1.5rem;
    }
    
    .checkbox-group {
        grid-template-columns: 1fr;
    }
}