body {
    margin: 0;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: #1a1a1a;
    color: white;
    font-family: Arial, sans-serif;
}

.controls {
    margin: 20px;
    padding: 20px;
    background: #333;
    border-radius: 10px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

button {
    margin: 5px;
    padding: 8px 15px;
    background: #4b4791;
    border: none;
    border-radius: 5px;
    color: white;
    cursor: pointer;
    transition: background 0.3s;
}

button:hover {
    background: #8f3921;
}

.slider-container {
    margin: 10px 0;
    display: flex;
    align-items: center;
}

label {
    display: inline-block;
    width: 120px;
}

.value-display {
    margin-left: 10px;
    min-width: 30px;
}

.copyright-container {
    width: 100%;
    text-align: left;
    padding-left: 20px;
    margin-top: 20px;
}

.copyright {
    color: #888;
    font-size: 0.8em;
    margin-top: 20px;
    position: absolute;
    bottom: 10px;
    width: 100%;
    left: 0;
    padding: 0 20px;
    box-sizing: border-box;
}

.copyright span {
    font-weight: bold;
    color: #aaa;
}