body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden; /* Prevent scrolling */
    background-color: #a8baa0; /* Matches PsychoPy win color */
    font-family: Arial, sans-serif;
}

#expCanvas {
    display: block;
    width: 100vw;
    height: 100vh;
}

#dialog-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
}

.dialog-box {
    background: white;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
}

input { margin: 10px; padding: 5px; }
button { padding: 5px 15px; cursor: pointer; }