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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

.container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 600px;
    width: 100%;
    padding: 60px 40px;
}

header {
    text-align: center;
    margin-bottom: 40px;
}

.logo {
    max-width: 200px;
    height: auto;
    margin-bottom: 20px;
}

h1 {
    font-size: 3em;
    color: #667eea;
    margin-bottom: 10px;
    font-weight: 700;
}

.tagline {
    font-size: 1.1em;
    color: #666;
    font-weight: 400;
    line-height: 1.8;
    max-width: 500px;
    margin: 0 auto;
}

.hero {
    text-align: center;
    margin-bottom: 40px;
}

.hero h2 {
    font-size: 2em;
    color: #333;
    margin-bottom: 15px;
}

.hero p {
    font-size: 1.1em;
    color: #666;
    line-height: 1.8;
}

.cta {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    margin-bottom: 40px;
    text-align: center;
}

.cta h3 {
    color: #333;
    margin-bottom: 15px;
    font-size: 1.5em;
}

.cta p {
    color: #666;
    line-height: 1.8;
}

.newsletter {
    text-align: center;
}

.newsletter h3 {
    color: #333;
    margin-bottom: 20px;
    font-size: 1.5em;
}

.newsletter-form {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

.newsletter-form input[type="email"] {
    flex: 1;
    min-width: 250px;
    padding: 15px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 50px;
    font-size: 1em;
    transition: border-color 0.3s;
}

.newsletter-form input[type="email"]:focus {
    outline: none;
    border-color: #667eea;
}

.newsletter-form button {
    padding: 15px 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
}

.newsletter-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.4);
}

.privacy {
    color: #999;
    font-size: 0.9em;
    margin-top: 10px;
    margin-bottom: 5px;
}

.powered-by {
    font-size: 0.85em;
    margin-top: 5px;
}

.powered-by a {
    color: #999;
    text-decoration: none;
    transition: color 0.3s;
}

.powered-by a:hover {
    color: #667eea;
    text-decoration: underline;
}

.who-am-i {
    margin-top: 50px;
    padding: 40px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 10px;
    text-align: center;
}

.who-am-i h3 {
    color: #333;
    margin-bottom: 25px;
    font-size: 1.8em;
}

.author-photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 25px;
    border: 4px solid white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.author-info {
    max-width: 500px;
    margin: 0 auto;
}

.author-info p {
    color: #555;
    line-height: 1.8;
    margin-bottom: 15px;
    font-size: 1.05em;
}

.author-info p:last-child {
    margin-bottom: 0;
}

.author-info strong {
    font-weight: 600;
}

.author-info strong a {
    color: #667eea;
    text-decoration: none;
    transition: color 0.3s;
}

.author-info strong a:hover {
    color: #764ba2;
    text-decoration: underline;
}

footer {
    text-align: center;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid #e0e0e0;
}

footer p {
    color: #999;
    font-size: 0.9em;
}

@media (max-width: 600px) {
    .container {
        padding: 40px 25px;
    }
    
    h1 {
        font-size: 2.2em;
    }
    
    .hero h2 {
        font-size: 1.5em;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .newsletter-form input[type="email"] {
        min-width: 100%;
    }
    
    .newsletter-form button {
        width: 100%;
    }
}