nextcloud_server/core/css/header.scss

/*!
 * SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
 * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */
@use 'variables';

/* prevent ugly selection effect on accidental selection */
#header,
#expanddiv {
	-webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;

	#nextcloud:focus-visible,
	.app-menu-entry a:focus-visible,
	.header-menu button:first-of-type:focus-visible {
		outline: none;

		&::after {
			content: " ";
			position: absolute;
			inset-block-end: 2px;
			transform: translateX(-50%);
			width: 12px;
			height: 2px;
			border-radius: 3px;
			background-color: var(--color-background-plain-text);
			inset-inline-start: 50%;
			opacity: 1;
		}
	}

	.header-end {
		// Add some spacing so the last entry looks ok
		margin-inline-end: calc(3 * var(--default-grid-baseline));

		a:not(.button):focus-visible::after, div[role=button]:focus-visible::after {
			bottom: 4px;
		}

		#expand.menutoggle:focus-visible::after {
			inset-inline-start: 40%;
		}
	}

}

/* HEADERS ------------------------------------------------------------------ */
#body-user #header,
#body-settings #header,
#body-public #header {
	display: inline-flex;
	position: absolute;
	top: 0;
	width: 100%;
	z-index: 2000;
	height: variables.$header-height;
	box-sizing: border-box;
	justify-content: space-between;
}

/* LOGO and APP NAME -------------------------------------------------------- */
#nextcloud {
	padding: 5px 0;
	padding-inline-start: 86px; // logo width + 2* pa
	position: relative;
	height: calc(100% - 4px);
	box-sizing: border-box;
	opacity: 1;
	align-items: center;
	display: flex;
	flex-wrap: wrap;
	overflow: hidden;
	margin: 2px;

	&:hover, &:active {
		opacity: 1;
	}
}

@mixin header-menu-height() {
	min-height: calc(44px * 1.5); // show at least 1.5 entries
	max-height: calc(100vh - #{variables.$header-height} - 8px);
}

#header {
	/* Header menu */
	$header-menu-entry-height: 44px;

	.header-end > div > .menu {
		background-color: var(--color-main-background);
		filter: drop-shadow(0 1px 5px var(--color-box-shadow));
		border-radius: var(--border-radius-large);
		box-sizing: border-box;
		z-index: 2000;
		position: absolute;
		max-width: 350px;
		@include header-menu-height();
		inset-inline-end: 8px; // relative to parent
		top: variables.$header-height;
		margin: 0;
		overflow-y: auto;

		&:not(.popovermenu) {
			display: none;
		}

		/* Dropdown arrow */
		&:after {
			border: 10px solid transparent;
			border-bottom-color: var(--color-main-background);
			bottom: 100%;
			content: ' ';
			height: 0;
			width: 0;
			position: absolute;
			pointer-events: none;
			inset-inline-end: 10px;
		}

		& > div,
		& > ul {
			-webkit-overflow-scrolling: touch;
			@include header-menu-height();
		}
	}
	.logo {
		display: inline-flex;
		background-image: var(--image-logoheader, var(--image-logo, url('../img/logo/logo.svg')));
		background-repeat: no-repeat;
		background-size: contain;
		background-position: center;
		width: 62px;
		position: absolute;
		inset-inline-start: 12px;
		top: 1px;
		bottom: 1px;
		// Invert if not customized and background is bright
		filter: var(--image-logoheader-custom, var(--background-image-invert-if-bright));
	}

	.header-appname-container {
		display: none;
		padding-inline-end: 10px;
		flex-shrink: 0;
	}

	#header-start, .header-start,
	#header-end, .header-end {
		display: inline-flex;
		align-items: center;
	}

	#header-start, .header-start {
		flex: 1 0;
		white-space: nowrap;
		min-width: 0;
	}

	#header-end, .header-end {
		justify-content: flex-end;
		flex-shrink: 1;
	}

	/* Right header standard */
	.header-end {
		> .header-menu__trigger img {
			filter: var(--background-image-invert-if-bright);
		}
		> div,
		> form {
			height: 100%;
			position: relative;
			> .menutoggle {
				display: flex;
				justify-content: center;
				align-items: center;
				width: variables.$header-height;
				height: 44px;
				cursor: pointer;
				opacity: 0.85;
				padding: 0;
				margin: 2px 0;

				&:focus {
					opacity: 1;
				}

				&:focus-visible {
					outline: none;
				}
			}
		}
	}
}

/* hover effect for app switcher label */

.header-appname-container .header-appname {
	opacity: .75;
}

/* TODO: move into minimal css file for public shared template */
/* only used for public share pages now as we have the app icons when logged in */
.header-appname {
	color: var(--color-background-plain-text);
	font-size: 16px;
	font-weight: bold;
	margin: 0;
	padding: 0;
	padding-inline-end: 5px;
	overflow: hidden;
	text-overflow: ellipsis;
	// Take full width to push the header-shared-by bellow (if any)
	flex: 1 1 100%;
}

.header-info {
	display: flex;
	flex-direction: column;
	overflow: hidden;
}

.header-title {
	overflow: hidden;
	text-overflow: ellipsis;
}

.header-shared-by  {
	color: var(--color-background-plain-text);
	position: relative;
	font-weight: 300;
	font-size: 11px;
	line-height: 11px;
	overflow: hidden;
	text-overflow: ellipsis;
}

/* Skip navigation links – show only on keyboard focus */
#skip-actions {
	position: absolute;
	overflow: hidden;
	z-index: 9999;
	top: -999px;
	inset-inline-start: 3px;
	padding: 11px;
	display: flex;
	flex-wrap: wrap;
	gap: 11px;

	&:focus-within {
		top: variables.$header-height;
	}
}

/* Empty content messages in the header e.g. notifications, contacts menu, … */
header #emptycontent,
header .emptycontent {
	h2 {
		font-weight: normal;
		font-size: 16px;
	}
	[class^='icon-'],
	[class*='icon-'] {
		background-size: 48px;
		height: 48px;
		width: 48px;
	}
}