:root {
    --primary-color: #4a90e2;
    --secondary-color: #f5a623;
    --background-color: #f0f2f5;
    --text-color: #333;
    --white: #fff;
    --border-radius: 8px;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.dark-mode {
    --primary-color: #90caf9;
    --secondary-color: #ffcc80;
    --background-color: #121212;
    --text-color: #e0e0e0;
    --white: #1e1e1e;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.4);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

lotto-generator {
    display: block;
    width: 100%;
    max-width: 400px;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 2rem;
    box-sizing: border-box;
}

#theme-toggle {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.9rem;
    transition: background-color 0.3s;
}

#theme-toggle:hover {
    background-color: #3a7bc8;
}

.contact-form-container {
    margin-top: 2rem;
    width: 100%;
    max-width: 400px;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 2rem;
    box-sizing: border-box;
    text-align: center;
}

.contact-form-container h2 {
    color: var(--primary-color);
    margin-top: 0;
    margin-bottom: 1.5rem;
}

.contact-form label {
    display: block;
    text-align: left;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-size: 0.9rem;
}

.contact-form input[type="email"],
.contact-form textarea {
    width: calc(100% - 20px);
    padding: 10px;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 1rem;
    background-color: var(--background-color);
    color: var(--text-color);
}

.contact-form textarea {
    resize: vertical;
}

.contact-form button[type="submit"] {
    background-color: var(--secondary-color);
    color: var(--white);
    border: none;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
    width: 100%;
}

.contact-form button[type="submit"]:hover {
    background-color: #e08e0b;
}