html, body {
	margin: 0;
	padding: 0;
	height: 100%;
	width: 100%;
}

body {
	font-family: sans-serif;
	background-color: #eee;
	color: #222;
	line-height: 1.5;

	display: grid;
	grid-template-rows: auto 1fr;
	grid-template-columns: 20vw 1fr;
}

a button {
	color: #222;
}

* {
	box-sizing: border-box;
}

input, button, textarea {
	font: inherit;
	color: inherit;
	vertical-align: middle;
	margin: 0;
}
button, input[type=submit], input[type=button] {
	padding: 0 0.5em;
	cursor: pointer;
	font-size: 90%;
	font-variant: all-small-caps;
	background-color: #fff;
	border: 1px solid #aaa;
}

h1 {
	text-align: center;
	line-height: 1.2;
	margin: 0;
}
h1 img {
	width: 1em;
	height: 1em;
	vertical-align: middle;
}

.sidebar, .main-area {
	height: 100%;
	overflow-y: hidden;
	display: grid;
}
.main-area {
	grid-column: 2;
	grid-row-start: 1;
	grid-row-end: 3;
	grid-template-rows: auto 1fr auto;
	position: relative;
}

.sidebar-head {
	background-color: #e5e5e5;
	padding: 0.5em;
	border-bottom: 1px solid #aaa;
	border-right: 1px solid #aaa;
}

#channel_list {
	padding: 0;
	height: 100%;
	overflow-x: hidden;
	overflow-y: scroll;
	border-right: 1px solid #aaa;
}
#channel_list a {
	position: relative;
	text-overflow: ellipsis;
	overflow: hidden;
	white-space: nowrap;
	display: block;
	padding: 2px 10px;
	color: #333;
	text-decoration: none;
}
#channel_list a:hover {
	background-color: #e5e5e5;
}
#channel_list .active a {
	background-color: #ddd;
}
#channel_list :first-child a {
	padding-top: 5px;
}
#channel_list :last-child a {
	padding-bottom: 5px;
}
#channel_list .team-name {
	color: #888;
}
#channel_list .separator {
	color: #888;
	margin: 0 1px;
}
#channel_list .unread {
	font-weight: bold;
}
#channel_list a .msg_count_gem {
	display: none;
	position: absolute;
	background-color: #444;
	border-radius: 100%;
	color: #ccc;
	font-weight: normal;
	font-size: 50%;
	padding: 0 0.6em;
	right: 0.5em;
	top: 50%;
	transform: translateY(-50%);
	vertical-align: middle;
}

ul#channel_list, ul#server_selection_list {
	list-style: none;
	margin: 0;
}
ul#server_selection_list {
	padding-left: 0;
	font-size: 90%;
}

.centered {
	width: 100%;
	max-width: 700px;
	margin: 0 auto;
	position: relative;
}

#channel_header {
	box-sizing: content-box;
	min-height: 1em;
	padding: 10px;
	border-bottom: 1px solid #aaa;
	background-color: #e5e5e5;
}
#channel_header .team-name {
	color: #888;
}
#channel_header .separator {
	color: #888;
	margin: 0 3px;
}

#channel_contents_wrapper {
	overflow-x: hidden;
	overflow-y: scroll;
	padding-left: 12px;
	height: 100%;

	transition-property: background-position, border;
	transition-duration: 0.1s;

	background-position-y: calc(100% + 50px);
	background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.08));
	background-size: 1px 50px;
	background-repeat: repeat-x;

	border-bottom: 1px solid rgba(170, 170, 170, 0);
}
#channel_contents_wrapper.new-messages {
	background-image: linear-gradient(to bottom, rgba(0, 0, 255, 0), rgba(0, 0, 255, 0.1));
}
#channel_contents_wrapper.not-at-bottom {
	transition-duration: 0.5s;
	background-position-y: 100%;
	border-bottom-color: rgba(170, 170, 170, 0.5);
}
#channel_contents {
	text-rendering: optimizeLegibility;
	width: 100%;
	height: 100%;
	padding: 0 10px;
}
.compose-wrapper {
	padding: 5px 8px;
}
#compose {
	width: 100%;
	resize: none;
	overflow: hidden;
	padding: 0.2em 0.3em;
}

#login {
	display: none;
	text-align: center;
}
#login h2 {
	margin-bottom: 0.3em;
}
#login:target {
	display: block;
}
#login input[type=text], #login input[type=password] {
	width: 100%;
}
#login_server {
	margin-bottom: 1em;
}
.login-form {
	margin-bottom: 0.5em;
}

.date_separator {
	font-weight: bold;
	margin-top: 0.3em;
	font-size: 75%;
	text-align: center;
	color: #555;
	border-top: 1px solid #ccc;
}

.post {
	padding: 0.2em;
	margin-top: 0.3em;
	min-height: 3ex;
	position: relative;
}
.post.same_author {
	margin-top: 0;
}
.post:first-child {
	margin-top: 8px;
}
.post:last-child {
	margin-bottom: 8px;
}
.post:hover {
	background-color: #e4e4e4;
}

.post .author {
	font-size: 80%;
	font-weight: bold;
	align-self: end;
}
.post.same_author:not(.show_time) .author {
	display: none;
}

.post .create_at {
	font-size: 80%;
	color: #888;
	position: absolute;
	padding: 0 0.2em;
	right: 0;
	top: 0;
}
.post:not(.show_time) .create_at {
	display: none;
}
.post:not(.show_time):hover .create_at {
	display: block;
	background-color: #e4e4e4;
}

.post .message {
	line-height: 1.2;
	word-wrap: break-word;
	overflow-wrap: break-word;
}
.post.special .message {
	color: #555;
	font-size: 75%;
}

.post ul.attachments {
	margin: 0;
	padding: 0;
	list-style: none;
	font-size: 80%;
}
.post ul.attachments img {
	margin-left: 0.5em;
	vertical-align: middle;
}

.channel-contents-message {
	text-align: center;
	width: 100%;
	height: 100%;
	display: flex;
	align-items: center;
	justify-content: center;
	color: #aaa;
}