woocommerce/plugins/woocommerce-admin/client/header/activity-panel/style.scss

.woocommerce-layout__activity-panel {
	display: flex;
	flex-direction: row;
	align-items: center;
	position: fixed;
	right: 0;
	top: 32px;
	height: $header-height;

	@include breakpoint( '<782px' ) {
		position: relative;
		background: $studio-white;
		margin: 0;
		padding: 0;
		width: 100vw;
		display: none;
		flex: 1 100%;
	}

	@include breakpoint( '782px-960px' ) {
		max-width: 280px;
	}

	@include breakpoint( '>1280px' ) {
		max-width: 400px;
	}

	&.is-mobile-open {
		display: flex;
	}
}

.woocommerce-layout__activity-panel-tabs {
	width: 100%;
	display: flex;
	height: $header-height;
	justify-content: flex-end;

	.dashicon,
	.gridicon {
		width: 100%;
	}

	svg {
		width: 18px;
		height: 18px;

		// custom progress icon, requires specific coloring
		&.setup-progress {
			fill: none;

			path:last-child {
				stroke: currentColor;
			}
		}

		@include breakpoint( '>960px' ) {
			width: 24px;
			height: 24px;
		}
	}

	.components-icon-button {
		display: initial;
		text-indent: 0;
		border-radius: 0;

		&.has-text {
			svg {
				margin: 0;
			}
		}
	}

	.woocommerce-layout__activity-panel-tab {
		display: flex;
		flex-direction: column;
		justify-content: center;
		align-items: center;
		position: relative;
		border: none;
		outline: none;
		cursor: pointer;
		background-color: $studio-white;
		max-width: min-content;
		min-width: 80px;
		width: 100%;
		height: $header-height;
		color: $gray-700;
		white-space: nowrap;

		&::before {
			background-color: var(--wp-admin-theme-color);
			bottom: 0;
			content: '';
			height: 0;
			opacity: 0;
			transition-property: height, opacity;
			transition-duration: 300ms;
			transition-timing-function: cubic-bezier(0.42, 0, 0.58, 1);
			left: 0;
			position: absolute;
			right: 0;
		}

		&.is-active {
			color: $gray-900;
			box-shadow: none;

			&::before {
				height: 3px;
				opacity: 1;
			}
		}

		&.has-unread::after,
		&.woocommerce-layout__activity-panel-tab-wordpress-notices::after {
			content: ' ';
			position: absolute;
			padding: 1px;
			background: $alert-red;
			border: 2px solid $studio-white;
			width: 4px;
			height: 4px;
			display: inline-block;
			border-radius: 50%;
			top: 8px;
			left: 50%;

			@include breakpoint( '782px-960px' ) {
				right: 18px;
				left: initial;
				margin-left: 0;
			}

			@include breakpoint( '>960px' ) {
				right: 28px;
				left: initial;
				margin-left: 0;
			}
		}

		&:hover,
		&.components-button:not(:disabled):not([aria-disabled='true']):hover {
			background-color: $gray-100;
			box-shadow: none;

			&.has-unread::after,
			&.woocommerce-layout__activity-panel-tab-wordpress-notices::after {
				border-color: $gray-200;
			}
		}

		&:focus,
		&.components-button:not(:disabled):not([aria-disabled='true']):focus {
			box-shadow: inset -1px -1px 0 $gray-700, inset 1px 1px 0 $gray-700;
		}
	}
}

.woocommerce-layout__activity-panel-mobile-toggle {
	margin-right: 10px;
	max-width: 48px;
	height: $header-height;
	position: absolute;
	right: 0;
	bottom: 0;
	@include breakpoint( '>782px' ) {
		display: none;
	}
}

.wp-responsive-open .woocommerce-layout__activity-panel-mobile-toggle {
	display: none;
}

.woocommerce-layout__activity-panel-toggle-bubble.has-unread::after {
	content: ' ';
	position: absolute;
	padding: 1px;
	background: $core-orange;
	border: 2px solid $studio-white;
	width: 4px;
	height: 4px;
	display: inline-block;
	border-radius: 50%;
	top: 6px;
	right: 4px;
}

@keyframes tabSwitch {
	0%,
	100% {
		transform: translateX(0);
	}
	50% {
		transform: translateX(100px);
	}
}

@mixin activity-panel-slide {
	transition-property: transform box-shadow;
	transition-duration: 300ms;
	transition-timing-function: cubic-bezier(0.42, 0, 0.58, 1);
	@media screen and ( prefers-reduced-motion: reduce ) {
		transition-duration: 1ms;
	}
}

.woocommerce-layout__activity-panel-wrapper {
	height: calc(100vh - #{$header-height + $header-height + $adminbar-height-mobile});
	background: $gray-100;
	width: 510px;
	@include breakpoint( '<782px' ) {
		width: 100%;
	}
	transform: translateX(100%);
	@include activity-panel-slide();
	position: fixed;
	right: 0;
	top: #{$header-height + $header-height + $adminbar-height-mobile};
	z-index: 1000;
	overflow-x: hidden;
	overflow-y: auto;

	@include breakpoint( '>782px' ) {
		height: calc(100vh - #{$header-height + $adminbar-height});
		top: #{$header-height + $adminbar-height};
	}

	&.is-open {
		transform: initial;
		box-shadow: 0 12px 12px 0 rgba(85, 93, 102, 0.3);
	}

	&.is-switching {
		animation: tabSwitch;
		animation-duration: 300ms;

		@media screen and ( prefers-reduced-motion: reduce ) {
			animation: none;
		}
	}

	.woocommerce-empty-content {
		padding-left: $gap-large;
		padding-right: $gap-large;
	}
}

.woocommerce-layout__activity-panel-avatar-flag-overlay {
	position: relative;
	top: -$gap-small;

	.woocommerce-flag {
		position: relative;
		top: 16px;
		border: 2px solid $studio-white;
	}
}

.woocommerce-layout__notice-list-hide {
	display: none;
}