server/core/css/header.scss

/**
 * @copyright Copyright (c) 2016, John Molakvoæ <skjnldsv@protonmail.com>
 * @copyright Copyright (c) 2016, Julius Haertl <jus@bitgrid.net>
 * @copyright Copyright (c) 2016, Lukas Reschke <lukas@statuscode.ch>
 * @copyright Copyright (c) 2016, Jos Poortvliet <jos@opensuse.org>
 * @copyright Copyright (c) 2016, Erik Pellikka <erik@pellikka.org>
 * @copyright Copyright (c) 2016, jowi <sjw@gmx.ch>
 * @copyright Copyright (c) 2015, Hendrik Leppelsack <hendrik@leppelsack.de>
 * @copyright Copyright (c) 2015, Volker E <volker.e@temporaer.net>
 * @copyright Copyright (c) 2014-2017, Jan-Christoph Borchardt <hey@jancborchardt.net>
 *
 * @license GNU AGPL version 3 or any later version
 *
 */
@use 'variables';

/* prevent ugly selection effect on accidental selection */
#header,
#expanddiv {
	-webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	a:not(.button):focus-visible, button:not(.button-vue):focus-visible, div[role="button"]:focus-visible {
		box-shadow: inset 0 0 0 2px var(--color-primary-text);
		border-radius: var(--border-radius);
		outline: none;
	}
}

/* HEADERS ------------------------------------------------------------------ */
#body-user #header,
#body-settings #header,
#body-public #header {
	display: inline-flex;
	position: fixed;
	top: 0;
	width: 100%;
	z-index: 2000;
	height: variables.$header-height;
	background-color: var(--color-primary);
	background-image: var(--gradient-primary-background);
	box-sizing: border-box;
	justify-content: space-between;
}

/* LOGO and APP NAME -------------------------------------------------------- */
#nextcloud {
	padding: 5px 0;
	padding-left: 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} * 4);
}

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

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

		&: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;
			right: 10px;
		}

		& > div,
		& > ul {
			overflow-y: auto;
			-webkit-overflow-scrolling: touch;
			@include header-menu-height();
		}

		/* Use by the settings right menu */
		&.settings-menu > ul {
			li {
				a {
					display: inline-flex;
					align-items: center;
					height: $header-menu-entry-height;
					color: var(--color-main-text);
					padding: 10px 12px;
					box-sizing: border-box;
					white-space: nowrap;
					position: relative;
					width: 100%;
					&:hover,
					&:focus {
						background-color: var(--color-background-hover);
					}
					&:active,
					&.active {
						background-color: var(--color-primary-light);
					}
					&:focus-visible {
						box-shadow: inset 0 0 0 2px var(--color-primary);
						outline: none;
					}
					span {
						display: inline-block;
						padding-bottom: 0;
						color: var(--color-main-text);
						white-space: nowrap;
						overflow: hidden;
						text-overflow: ellipsis;
						max-width: 110px;
					}
					.icon-loading-small {
						margin-right: 10px;
						background-size: 16px 16px;
					}
					img,
					svg {
						opacity: .7;
						margin-right: 10px;
						height: 16px;
						width: 16px;
						filter: var(--background-invert-if-dark);
					}
				}
			}
		}
	}
	.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;
		left: 12px;
		top: 1px;
		bottom: 1px;
		// Invert non-custom logo if primary is too bright
		filter: var(--image-logoheader-custom, var(--primary-invert-if-bright))
	}

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

	#header-left, .header-left,
	#header-right, .header-right {
		display: inline-flex;
		align-items: center;
	}

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

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

	/* Right header standard */
	.header-right {
		> 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-primary-text);
	font-size: 16px;
	font-weight: bold;
	margin: 0;
	padding: 0;
	padding-right: 5px;
	overflow: hidden;
	text-overflow: ellipsis;
	// Take full width to push the header-shared-by bellow (if any)
	flex: 1 1 100%;
}

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

/* USER MENU -----------------------------------------------------------------*/
#settings {
	display: inline-block;
	height: 100%;
	cursor: pointer;
	flex: 0 0 auto;

	/* User menu on the right */
	#expand {
		opacity: 1; /* override icon opacity */
		margin-right: 12px;

		&:hover,
		&:focus,
		&:active {
			color: var(--color-primary-text);

			#expandDisplayName,
			.avatardiv{
				border-radius: 50%;
				border: 2px solid var(--color-primary-text);
				margin: -2px;
			}
			.avatardiv{
				background-color: var(--color-primary-text);
			}
			#expandDisplayName {
				opacity: 1;
			}
		}

		/* Profile picture in header */
		.avatardiv {
			cursor: pointer;
			height: 32px;
			width: 32px;

			img {
				opacity: 1;
				cursor: pointer;
			}
			/* do not show display name when profile picture is present */
			&.avatardiv-shown + #expandDisplayName {
				display: none;
			}
		}

		#expandDisplayName {
			padding: 8px;
			opacity: .6;
			cursor: pointer;

			/* full opacity for gear icon if active */
			#body-settings & {
				opacity: 1;
			}
		}

		/* show triangle below user menu if active */
		#body-settings &:before {
			content: ' ';
			height: 0;
			width: 0;
			position: absolute;
			pointer-events: none;
			border: 0 solid transparent;
			border-bottom-color: var(--color-main-background);
			border-width: 10px;
			bottom: 0;
			z-index: 100;
			display: block;
		}
	}

	#expanddiv:after {
		right: 22px;
	}
}

/* Skip navigation links – show only on keyboard focus */
#skip-actions {
	position: absolute;
	overflow: hidden;
	z-index: 9999;
	top: -999px;
	left: 3px;
	height: 50px;
	padding: 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;
	}
}