:root {
    --background-color: #f0f2f5;
    --container-background: #ffffff;
    --text-color: #333;
    --button-background: #007BFF;
    --button-hover: #0056b3;
    --number-background: #4CAF50;
    --number-text: white;
    --input-border-color: #ccc;
    --input-focus-border-color: #007BFF;
}

body {
    font-family: 'Arial', sans-serif;
    display: flex;
    flex-direction: column; /* Allow forms to stack vertically */
    justify-content: center;
    align-items: center;
    min-height: 100vh; /* Use min-height to allow content to expand */
    margin: 0;
    padding: 20px; /* Add some padding around content */
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

body.dark-mode {
    --background-color: #121212;
    --container-background: #1e1e1e;
    --text-color: #e0e0e0;
    --button-background: #0d6efd;
    --button-hover: #0a58ca;
    --number-background: #28a745;
    --input-border-color: #555;
    --input-focus-border-color: #0d6efd;
}

.theme-toggle-container {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 100; /* Ensure it's above other content */
}

#theme-toggle {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    background-color: var(--button-background);
    color: white;
    cursor: pointer;
    transition: background-color 0.3s;
}

#theme-toggle:hover {
    background-color: var(--button-hover);
}

.container {
    text-align: center;
    padding: 40px;
    border-radius: 15px;
    background-color: var(--container-background);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s;
    margin-bottom: 30px; /* Space between containers */
    max-width: 600px; /* Limit width for better readability */
    width: 100%; /* Make it responsive */
}

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

.numbers-container {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap; /* Allow numbers to wrap on smaller screens */
}

.number {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--number-background);
    color: var(--number-text);
    font-size: 24px;
    font-weight: bold;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, background-color 0.3s;
}

.number:hover {
    transform: scale(1.1);
}

.generate-btn {
    padding: 15px 30px;
    border: none;
    border-radius: 10px;
    background-color: var(--button-background);
    color: white;
    font-size: 18px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.generate-btn:hover {
    background-color: var(--button-hover);
}

/* Contact Form Specific Styles */
.contact-form-container h2 {
    margin-bottom: 25px;
    color: var(--text-color);
    font-size: 28px;
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: var(--text-color);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    width: calc(100% - 20px); /* Account for padding */
    padding: 12px 10px;
    border: 1px solid var(--input-border-color);
    border-radius: 8px;
    font-size: 16px;
    background-color: var(--container-background);
    color: var(--text-color);
    transition: border-color 0.3s, background-color 0.3s, color 0.3s;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group textarea:focus {
    border-color: var(--input-focus-border-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}

.submit-btn {
    padding: 15px 30px;
    border: none;
    border-radius: 10px;
    background-color: var(--button-background);
    color: white;
    font-size: 18px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    width: 100%; /* Make button full width */
    margin-top: 10px;
}

.submit-btn:hover {
    background-color: var(--button-hover);
}