:root {
    --background-color: #f0f2f5;
    --container-background: white;
    --text-color: #333;
    --button-background: #007bff;
    --button-text-color: white;
    --lotto-number-background: #4CAF50;
}

body {
    font-family: 'Helvetica Neue', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    transition: background-color 0.3s, color 0.3s;
}

body.dark-mode {
    --background-color: #1a1a1a;
    --container-background: #2c2c2c;
    --text-color: #f0f2f5;
    --button-background: #0056b3;
    --lotto-number-background: #2E8B57;
}

.theme-toggle-container {
    position: absolute;
    top: 20px;
    right: 20px;
}

#theme-toggle-btn {
    background-color: var(--button-background);
    color: var(--button-text-color);
    border: none;
    padding: 10px 20px;
    font-size: 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s;
}

#theme-toggle-btn:hover {
    opacity: 0.8;
}

.container {
    text-align: center;
    background-color: var(--container-background);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

h1 {
    color: var(--text-color);
    margin-bottom: 30px;
}

.lotto-numbers {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
}

.number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    font-weight: bold;
    color: white;
    background-color: var(--lotto-number-background); /* Green */
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

#generate-btn {
    background-color: var(--button-background);
    color: var(--button-text-color);
    border: none;
    padding: 15px 30px;
    font-size: 18px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 8px rgba(0, 123, 255, 0.3);
}

#generate-btn:hover {
    background-color: #0056b3;
    box-shadow: 0 6px 12px rgba(0, 123, 255, 0.4);
}

/* Contact Link Styling */
.contact-link {
    background-color: var(--button-background);
    color: var(--button-text-color);
    text-decoration: none;
    padding: 10px 20px;
    font-size: 16px;
    border-radius: 8px;
    margin-right: 10px; /* Space between link and theme toggle button */
    transition: background-color 0.3s;
}

.contact-link:hover {
    opacity: 0.8;
}

/* Form Styling */
form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
}

form label {
    font-weight: bold;
    color: var(--text-color);
    text-align: left;
}

form input[type="text"],
form input[type="email"],
form textarea {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 16px;
    background-color: var(--container-background);
    color: var(--text-color);
}

form input[type="text"]:focus,
form input[type="email"]:focus,
form textarea:focus {
    border-color: var(--button-background);
    outline: none;
}

form button[type="submit"] {
    background-color: var(--button-background);
    color: var(--button-text-color);
    border: none;
    padding: 15px 20px;
    font-size: 18px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 8px rgba(0, 123, 255, 0.3);
}

form button[type="submit"]:hover {
    background-color: #0056b3;
    box-shadow: 0 6px 12px rgba(0, 123, 255, 0.4);
}