:root {
    --background-color-light: #f4f4f4;
    --text-color-light: #333;
    --number-bg-light: #eee;
    --button-bg-light: #007bff;
    --button-text-light: #fff;

    --background-color-dark: #333;
    --text-color-dark: #f4f4f4;
    --number-bg-dark: #555;
    --button-bg-dark: #0056b3;
    --button-text-dark: #fff;
}

body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    transition: background-color 0.3s, color 0.3s;
}

/* Light Mode (Default) */
body {
    background-color: var(--background-color-light);
    color: var(--text-color-light);
}

.lotto-numbers .number {
    background-color: var(--number-bg-light);
    color: var(--text-color-light);
}

button {
    background-color: var(--button-bg-light);
    color: var(--button-text-light);
}

/* Dark Mode */
body.dark-mode {
    background-color: var(--background-color-dark);
    color: var(--text-color-dark);
}

body.dark-mode .lotto-numbers .number {
    background-color: var(--number-bg-dark);
    color: var(--text-color-dark);
}

body.dark-mode button {
    background-color: var(--button-bg-dark);
    color: var(--button-text-dark);
}

.container {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}

h1 {
    color: #333;
    margin-bottom: 20px;
}

.theme-toggle {
    margin-bottom: 20px;
}

.lotto-numbers {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

.lotto-numbers .number {
    width: 50px;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    font-size: 1.5em;
    font-weight: bold;
    border: 1px solid #ccc;
}

button {
    padding: 10px 20px;
    font-size: 1em;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    opacity: 0.9;
}

/* Form Styles */
.form-container {
    margin-top: 30px;
}

.form-container h2 {
    margin-bottom: 20px;
    color: var(--text-color-light); /* Default for light mode */
}

body.dark-mode .form-container h2 {
    color: var(--text-color-dark); /* Dark mode */
}

.form-group {
    margin-bottom: 15px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: var(--text-color-light); /* Default for light mode */
}

body.dark-mode .form-group label {
    color: var(--text-color-dark); /* Dark mode */
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    width: calc(100% - 20px); /* Adjust for padding */
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: var(--number-bg-light); /* Use similar to number background */
    color: var(--text-color-light); /* Use similar to number text */
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

body.dark-mode .form-group input[type="text"],
body.dark-mode .form-group input[type="email"],
body.dark-mode .form-group textarea {
    border-color: #777;
    background-color: var(--number-bg-dark);
    color: var(--text-color-dark);
}

.form-container button[type="submit"] {
    width: 100%;
    padding: 12px;
    font-size: 1.1em;
    font-weight: bold;
    margin-top: 10px;
    border-radius: 5px;
    cursor: pointer;
    background-color: var(--button-bg-light);
    color: var(--button-text-light);
    transition: background-color 0.3s;
}

body.dark-mode .form-container button[type="submit"] {
    background-color: var(--button-bg-dark);
    color: var(--button-text-dark);
}

.form-container button[type="submit"]:hover {
    opacity: 0.9;
}