:root {
    --bg-color: #f0f0f0;
    --container-bg: #fff;
    --text-color: #333;
    --button-bg: #4CAF50;
    --button-text: white;
    --number-bg: #fff;
    --number-text: #333;
    --input-bg: #f9f9f9;
    --input-border: #ddd;
}

body.dark-mode {
    --bg-color: #1a1a1a;
    --container-bg: #2d2d2d;
    --text-color: #f0f0f0;
    --button-bg: #45a049;
    --button-text: white;
    --number-bg: #3d3d3d;
    --number-text: #fff;
    --input-bg: #3d3d3d;
    --input-border: #444;
}

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

.container {
    text-align: center;
    background-color: var(--container-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    width: 90%;
    max-width: 400px;
    margin: 20px;
}

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

.number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--number-bg);
    color: var(--number-text);
    margin: 5px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    font-weight: bold;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    transition: background-color 0.3s, color 0.3s;
}

button {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    background-color: var(--button-bg);
    color: var(--button-text);
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s;
}

#theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: #555;
    z-index: 1000;
}

body.dark-mode #theme-toggle {
    background-color: #eee;
    color: #333;
}
.contact-section {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--input-border);
}

#disqus_thread {
    margin-top: 50px;
    padding-top: 20px;
    border-top: 1px solid var(--input-border);
}

.contact-section h2 {
...
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.form-group {
    margin-bottom: 10px;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--input-border);
    border-radius: 5px;
    background-color: var(--input-bg);
    color: var(--text-color);
    box-sizing: border-box;
}

.form-group textarea {
    height: 80px;
    resize: vertical;
}

.submit-btn {
    width: 100%;
    margin-top: 10px;
}