:root {
    --bg-color: #f0f0f0;
    --text-color: #333;
    --app-bg-color: white;
    --button-bg-color: #007bff;
    --button-text-color: white;
    --button-hover-bg-color: #0056b3;
}

body.dark-mode {
    --bg-color: #333;
    --text-color: #f0f0f0;
    --app-bg-color: #444;
    --button-bg-color: #555;
    --button-hover-bg-color: #777;
}

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

#app {
    background-color: var(--app-bg-color);
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
    text-align: center;
}

.hide {
    display: none;
}

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

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

#answers button {
    display: block;
    margin: 10px auto;
    width: 100%;
}

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

#contact-form-screen {
    max-width: 500px;
    margin: 20px auto;
}

#contact-form-screen h2, #contact-form-screen p {
    color: var(--text-color);
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: var(--text-color);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    width: calc(100% - 22px); /* Padding + Border */
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: var(--app-bg-color);
    color: var(--text-color);
    box-sizing: border-box;
}

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

#contact-form-screen button[type="submit"] {
    width: 100%;
    padding: 12px;
    font-size: 1.1em;
    margin-top: 10px;
}