/* The Qt screen covers the whole visual viewport; the shell shows only while loading or after exit. */
html, body { margin: 0; padding: 0; height: 100%; overflow: hidden; background: #070b18; color: #e8ecf8;
    font-family: system-ui, sans-serif; }
#screen { width: 100%; height: 100%; }
#shell { height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; }
#shell[hidden], #screen[hidden] { display: none; }
#shell h1 { font-size: 22px; letter-spacing: 1px; margin: 14px 0 10px; }
#shell p { color: #8b95b5; font-size: 13px; margin: 0; }