body {
    background-clip: content-box;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

/* Dragging helpers */
.window.glass.active {
    /* no change to flow on page when dragged */
    transition: none;
    /* responsive width */
    max-width: min(90%, 600px);
    width: auto;
}

.window.glass.active .title-bar {
    cursor: grab;
    /* indicate draggable */
    touch-action: none;
    /* allow pointer events for touch */
    -webkit-user-select: none;
    -user-select: none;
}

.window.glass.active.dragging .title-bar {
    cursor: grabbing;
}

/* ensure the app background fills viewport so centering uses the full page */
html,
body {
    height: 100%;
}

.background {
    min-height: 100vh;
}

/* make window text feel native / non-selectable */
.window.glass.active,
.window.glass.active * {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* allow interaction with potential form controls if added later */
.window.glass.active input,
.window.glass.active textarea,
.window.glass.active select {
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
    user-select: text;
}

/* custom context menu (app-like) */
#custom-context-menu {
    position: absolute;
    z-index: 9999;
    min-width: 180px;
    background: #ffffff;
    color: #111;
    border: 1px solid rgba(0, 0, 0, .12);
    box-shadow: 0 6px 18px rgba(0, 0, 0, .18);
    padding: 4px 0;
    font-size: 14px;
    display: none;
    border-radius: 4px;
    user-select: none;
}

#custom-context-menu .menu-item {
    padding: 8px 12px;
    cursor: pointer;
    white-space: nowrap;
}

#custom-context-menu .menu-item:hover {
    background: #efefef;
}

#custom-context-menu .menu-sep {
    height: 1px;
    background: #eee;
    margin: 6px 0;
}

#custom-context-menu[aria-hidden="true"] {
    display: none;
}