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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.4;
    color: #333;
    background: linear-gradient(135deg, #dddddd 0%, #858584 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 15px;
}

.container {
    max-width: 800px;
    width: 100%;
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 25px 30px;
    text-align: center;
}

header .logo {
    max-width: 120px;
    height: auto;
    margin-bottom: -5px;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 5px;
}

.tagline {
    font-size: 0.95rem;
    color: #666;
    margin-bottom: 15px;
}

.description {
    margin: 12px 0;
    padding: 12px 15px;
    background: #f8f9fa;
    border-radius: 8px;
    text-align: left;
}

.description p {
    color: #555;
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
}

.how-it-works {
    margin: 15px 0;
    text-align: left;
}

.how-it-works h2 {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 12px;
    text-align: center;
}

.feature {
    margin: 10px 0;
    padding: 12px 15px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.feature h3 {
    font-size: 1rem;
    color: #667eea;
    margin-bottom: 6px;
}

.feature p {
    color: #555;
    font-size: 0.85rem;
    line-height: 1.5;
    margin: 0;
}

.signup {
    margin: 15px 0;
}

.signup h2 {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 6px;
}

.signup > p {
    color: #666;
    margin-bottom: 12px;
    font-size: 0.85rem;
}

.form-group {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
    justify-content: center;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

input[type="email"] {
    flex: 1;
    max-width: 300px;
    padding: 10px 14px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 0.9rem;
    transition: border-color 0.3s;
}

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

button {
    padding: 10px 20px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

button:hover {
    background: #5568d3;
}

button:active {
    transform: scale(0.98);
}

.message {
    padding: 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    margin-top: 10px;
    display: none;
}

.message.success {
    display: block;
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.message.error {
    display: block;
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

footer {
    margin-top: 15px;
    padding-top: 12px;
    border-top: 1px solid #e0e0e0;
    color: #999;
    font-size: 0.75rem;
}

@media (max-width: 600px) {
    .container {
        padding: 30px 20px;
    }

    header h1 {
        font-size: 2rem;
    }

    .form-group {
        flex-direction: column;
    }

    button {
        width: 100%;
    }
}