.screen {
	width: 100%;
	height: 100%;
	user-select: none;
	box-sizing: border-box;
	display: grid;
	grid-template:
		"header" min-content
		"hgroup" min-content
		"main" auto / auto;
}

.screen-main-container {
	grid-area: main;
	overflow: hidden;
	display: grid;
	grid-template: "left main right" auto / min-content auto min-content;
}

.screen-aside-l {
	grid-area: left;
}

.screen-aside-r {
	grid-area: right;
}

.screen-main {
	grid-area: main;
}

.screen-main:empty,
.screen-aside-l:empty,
.screen-aside-r:empty {
	display: none;
}

.screen-main,
.screen-aside-l,
.screen-aside-r {
	overflow: hidden;
	padding: 3px;
}

.screen .scroll-box,
.screen > .screen-header,
.screen > .screen-hgroup {
	padding-right: var(--scrollbar-gutter);
}

.screen .scroll-box {
	overflow-y: auto;
}

.screen-header {
	grid-area: header;
	min-height: var(--menu-button-size);
}

.screen-header [role="menubar"] {
	display: grid;
	direction: rtl;
	grid-auto-flow: column;
	grid-template-columns: repeat(auto-fit, var(--menu-button-size));
	gap: var(--gap);
}

.screen-header [role="menuitem"] {
	--tooltip-gap: var(--gap);

	height: var(--menu-button-size);
	width: var(--menu-button-size);
}

.screen-header [role="menuitem"] .button-image {
	max-height: 90px;
	max-width: 90px;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
}

.screen-hgroup {
	grid-area: hgroup;
	display: flex;
	justify-content: center;
	align-items: center;
	color: white;
	min-height: 1.15em; /* 1 line */
	height: var(--menu-button-size);
	max-height: 4.6em; /* 4 lines */
}

.screen-hgroup h1,
.screen-hgroup [role='status'] {
	font-size: 1em;
	font-weight: normal;
	margin: unset;
	padding: unset;
	text-align: center;
}

.screen-hgroup-in-header.screen {
	grid-template:
		"header" min-content
		"main" auto / auto;
}

.screen-hgroup-in-header .screen-hgroup {
	grid-area: unset;
}

.screen-hgroup-in-header .screen-header {
	direction: rtl;
	display: grid;
	gap: var(--gap);
	grid-template-columns: min-content auto;
}