:root {
    --bg-color: #f0f0f0;
    --container-bg: white;
    --text-color: #333;
    --number-bg: #eee;
    --number-text: #333;
    --btn-bg: #4CAF50;
    --btn-text: white;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

body.dark-mode {
    --bg-color: #333;
    --container-bg: #444;
    --text-color: #f0f0f0;
    --number-bg: #555;
    --number-text: white;
    --btn-bg: #5cb85c;
    --shadow-color: rgba(255, 255, 255, 0.1);
    --input-bg: #555;
    --input-border: #666;
}

body {
    font-family: sans-serif;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    padding: 2rem;
    box-sizing: border-box;
}

.container {
    text-align: center;
    padding: 2rem;
    background-color: var(--container-bg);
    border-radius: 10px;
    box-shadow: 0 4px 8px var(--shadow-color), 0 6px 20px var(--shadow-color);
    transition: background-color 0.3s;
}

.numbers-container {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
}

.number {
    display: inline-block;
    width: 50px;
    height: 50px;
    line-height: 50px;
    border-radius: 50%;
    background-color: var(--number-bg);
    color: var(--number-text);
    margin: 0 0.5rem;
    font-size: 1.5rem;
    font-weight: bold;
    box-shadow: 0 2px 4px var(--shadow-color);
    transition: background-color 0.3s, color 0.3s;
}

#generate-btn {
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
    background-color: var(--btn-bg);
    color: var(--btn-text);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    transition: background-color 0.3s, box-shadow 0.3s;
}

#generate-btn:hover {
    opacity: 0.9;
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

.theme-switch-container {
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.theme-switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.theme-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
}

input:checked + .slider {
    background-color: #2196F3;
}

input:focus + .slider {
    box-shadow: 0 0 1px #2196F3;
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}

.contact-container {
    text-align: center;
    padding: 2rem;
    background-color: var(--container-bg);
    border-radius: 10px;
    box-shadow: 0 4px 8px var(--shadow-color), 0 6px 20px var(--shadow-color);
    margin-top: 2rem;
    max-width: 500px;
    width: 100%;
}

.contact-container h2 {
    color: var(--text-color);
    margin-bottom: 1.5rem;
}

.contact-container form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-weight: bold;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--input-border, #ccc);
    border-radius: 5px;
    background-color: var(--input-bg, white);
    color: var(--text-color);
    box-sizing: border-box;
    transition: border-color 0.3s, background-color 0.3s;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group textarea:focus {
    border-color: #4CAF50;
    outline: none;
}

.contact-container button[type="submit"] {
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    transition: background-color 0.3s, box-shadow 0.3s;
    width: fit-content;
    align-self: center;
}

.contact-container button[type="submit"]:hover {
    background-color: #45a049;
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

#disqus_thread {
    margin-top: 2rem;
    width: 100%; /* Ensure it takes full width of its container */
    max-width: 800px; /* Limit maximum width for better readability */
    background-color: var(--container-bg);
    color: var(--text-color);
    padding: 1rem;
    border-radius: 10px;
    box-shadow: 0 4px 8px var(--shadow-color), 0 6px 20px var(--shadow-color);
}