html,
body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    font-family: 'Helvetica Neue', Arial, sans-serif;
    background-color: #00000000;
}

#matter-canvas {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

.settings-container {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(30, 30, 35, 0.85);
    backdrop-filter: blur(5px);
    padding: 12px 20px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 100;
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
}

.settings-container label {
    color: #efeff1;
    font-weight: 600;
    font-size: 1.2rem;
}

.settings-container input[type="text"] {
    padding: 8px 12px;
    border: 1px solid #4d4d53;
    border-radius: 4px;
    background-color: #3a3a3d;
    color: #efeff1;
    font-size: 1.2rem;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.settings-container input[type="text"]:focus {
    border-color: #9147ff;
    box-shadow: 0 0 0 2px rgba(145, 71, 255, 0.5);
}

.settings-container button {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    background-color: #9147ff;
    color: white;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

.settings-container button:hover {
    background-color: #772ce8;
}

.settings-container.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateX(-50%) translateY(-20px);
}