roundcubemail/skins/elastic/styles/layout.less

@page-font-size:        1em;
@page-min-width:        240px;

/*** Responsive design - Layout ***/

/*
- Desktop - Big screen (width > 1200px)
   -----------------------------------------------------------------------------------------------------
   |  menu  |        sidebar        |         list          |                 content                  |
   -----------------------------------------------------------------------------------------------------
- Desktop - Normal screen (1200px => width => 768px)
   -------------------------------------------------------------------
   |menu|    sidebar/list     |               content                |
   -------------------------------------------------------------------
- Tablet (480px < width < 768px) - typical: 768x1024 (iPad Mini/Air)
   ------------------------------------------
   |menu|     sidebar/list/content          |
   ------------------------------------------
- Phone (width <= 480px) - typical: 320x480 (iPhone 5), 375x667 (iPhone 6-7), 360x564 (Galaxy S6)
   ------------------------
   | sidebar/list/content |
   ------------------------

NOTE: below 1024px we do some UI elements bigger, as this is good (imho)
      assumption that in this size we're dealing with touch device. Is it?
      should we rather feature detect tables/phones?
*/

body {
	font-size: @page-font-size;
	min-width: @page-min-width; /* overwrite semantic-ui's limit of 320px */
}

body > #layout {
	overflow: hidden;
	display: flex;
	flex-direction: row;
	flex-wrap: nowrap;
	height: 100%;
	width: 100%;
}

body > #layout > div.sidebar,
body > #layout > div.list {
	display: flex;
	flex-grow: 2;
	flex-direction: column;
	min-width: 300px;
	max-width: 30%;
	border-right: 1px solid @layout-border-color;
}

body > #layout > div.content {
	display: flex;
	flex-grow: 6;
	flex-direction: column;
	min-width: 50%;
	background-color: @layout-content-background-color;
}

body > #layout > div.sidebar {
	min-width: 220px;
	background-color: @layout-sidebar-background-color;
}

body > #layout > div.list {
	min-width: 300px;
	background-color: @layout-list-background-color;
}

body > #layout > div.menu {
	width: 60px;
	background-color: @taskmenu-background-color;
}

body > #layout > div.menu a,
body > #layout > div.menu a:before {
	display: block;
	width: 60px;
}

body:not(.iframe) > *:not(#layout),
body > #layout > div > .header > .buttons,
body > #layout > div > .header > a.back-list-button,
body > #layout > div > .header > a.back-sidebar-button,
body > #layout > div > .header > a.toolbar-menu-button,
body > #layout > div > .header > a.menu-button {
	display: none;
}

#layout > div .toolbar {
	float: right;
}

#layout > div.content > iframe,
#layout > div.content > .content,
#layout > div.content > .content > iframe {
	height: 100%;
	width: 100%;
	overflow: auto;
	border: 0;
	flex: 1;
}

#layout > div > .scroller {
	flex: 1;
}

#layout > .content.only > .scroller {
	overflow: auto;
}

#layout > div > .header,
#layout > div > .footer {
	background-color: @layout-header-background-color;
	font-size: 1.2em;
	font-weight: bold;
	line-height: 2.4em;
	height: 2.4em;
	padding: 0 0.5em;
	margin: 0;
	position: relative; /* for absolute positioning of searchbar */
	/* overflow: hidden; breaks semantic-ui popups */
}
#layout > div > .header {
	border-bottom: 1px solid #ddd;
}
#layout > div > .footer {
	border-top: 1px solid #ddd;
}

#taskmenu a.button-logout {
	position: absolute;
	bottom: 0;
	color: @taskmenu-logout-button-color;
}


@media screen and (max-width: 1200px) { /* small */
	body > #layout > div.sidebar,
	body > #layout > div.list {
		min-width: 260px;
	}
	body > #layout > div:not(.selected),
	body > #layout > div.menu span.button-inner {
		display: none;
	}
	body > #layout > div > .header > a.back-sidebar-button {
		display: inline;
	}
	body > #layout > div.menu,
	body > #layout > div.content {
		display: flex;
	}
	body > #layout > div.menu a,
	body > #layout > div.menu a:before,
	body > #layout > div.menu {
		width: 45px;
	}
	body > #layout > div.menu a:before {
		margin: 0.4em 0;
	}
}

@media screen and (max-width: 768px) { /* tablet */
	body {
		font-size: 1.2em;
	}
	#layout > div > .header > .toolbar:not(.searchbar),
	body > #layout > div:not(.selected) {
		display: none;
	}
	body > #layout > div.menu {
		display: flex;
	}
	body > #layout > div.sidebar,
	body > #layout > div.list {
		max-width: 100%;
	}
	body > #layout > div > .header > a.toolbar-menu-button,
	body > #layout > div > .header > .buttons {
		display: block;
		float: right;
	}
	body > #layout > div > .header > a.back-list-button {
		display: block;
		float: left;
	}
}

@media screen and (max-width: 480px) { /* phone */
	body > #layout > div > .header > a.menu-button {
		display: inline;
	}
	body > #layout > div.menu span.button-inner {
		display: block;
	}
	body > #layout > div.menu {
		display: none;
		position: absolute;
		z-index: 2;
		top: 0;
		left: 0;
		right: 0;
		width: auto;
		margin: 38pt 3pt 3pt 3pt;
		padding-bottom: 8pt;
		opacity: 0.96;
		text-align:center;
		border-radius: 4pt;
	}
	body > #layout > div.menu a,
	body > #layout > div.menu a:before {
		display: inline-block;
		width: 100px;
	}
	#taskmenu a.button-logout {
		position: relative;
	}
}

@media screen and (max-width: 319px) {
	#layout > div > .header > .buttons > button:before {
		content: "" !important;
		float: none !important;
	}
	body > #layout > div.sidebar,
	body > #layout > div.list {
		min-width: @page-min-width;
	}
}