/*
  This stylesheet file is used within the intro website.

  https://www.debian.org Stylesheet

  Copyright Debian WebTeam 2019

  This stylesheet is free software; you can redistribute it and/or modify it
  under the terms of the GNU General Public License, version 2, as published by
  the Free Software Foundation.

  This program is distributed in the hope that it will be useful, but WITHOUT ANY
  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
  PARTICULAR PURPOSE. See the GNU General Public License for more details.

  You should have received a copy of the GNU General Public License along with
  this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
  Street, Fifth Floor, Boston, MA 02110-1301 USA.

  The license text can also be found at http://www.gnu.org/copyleft/gpl.html and
  /usr/share/common-licenses/GPL-2 on Debian.
*/

html {
	font-size: 16px;
}
h1 {
	font-size: 2.2em;
}
hr {
	margin: 1em;
}

/* 
	Basically taken from https://www.yudiz.com/3-easiest-ways-to-make-equal-height-blocks-using-css/
	Method 3: Using CSS Flex Box
	and https://dev.to/drews256/ridiculously-easy-row-and-column-layouts-with-flexbox-1k01
*/
.row {
	display: flex;
	flex-direction: row;
	flex-wrap: wrap;
	width: 100%;
}
.column {
	display: flex;
	flex-direction: column;
	flex-basis: 100%;
	flex: 1;
	padding: 20px;
	border: 1px solid #fff;
	transition: all .2s ease-in-out;
	width: 50%;
}
.column-left, .column-right {
	/* Currently not used and empty. */
}

/* 
	CSS classes for columns greater than 50%.
  Only useful in combination with the base class 'column'.
*/
.column-2-parts {
	display: flex;
	flex-direction: column;
	flex-basis: 100%;
	flex: 2;
}
.column-3-parts {
	display: flex;
	flex-direction: column;
	flex-basis: 100%;
	flex: 3;
}
.column-4-parts {
	display: flex;
	flex-direction: column;
	flex-basis: 100%;
	flex: 4;
}
.community img {
	height: 60px;
}
div .community {
	padding: 10px 0;
	color: #fff;
}
.column-2-parts > h2,
.column-3-parts > h2,
.column-4-parts > h2 {
	padding-top: 20px;
}
.column-2-parts > p,
.column-3-parts > p,
.column-4-parts > p {
	margin-top: 10px;
}
.community.column:focus img {
	border: none;
	outline: 0;
}
.community.column:hover {
	border: 1px solid #fcfcfc;
}
.column:hover {
	border: 1px solid #e2e2e2;
	background: #fcfcfc;
}
.column h1 {
	text-transform: uppercase;
	text-align: center;
	letter-spacing: 0.08em;
	font-weight: bold;
}
.column h2 {
	margin: .2em;
}
.column img {
	object-fit: contain;
	max-width: 96%;
	max-height: 400px;
	padding: 10px 0;
}

/* Classes used within 'The Operating System' */
.os-img-container {
	position: relative;
	width: 100%;
}
.os-img-container img {
	max-width: 100%;
	height: auto;
}
.os-dl-btn {
	width: 8em;
	text-decoration: none;
}

/* 
	Unfortunately the 'backdrop-filter' element isn't working even in FF >= 60.x,
	which would be a nice use case here, using the classical CSS button method then.
	For more info see: https://webkit.org/blog/3632/introducing-backdrop-filters/ 
*/
.os-img-container .os-dl-btn {
	position: absolute;
	top: 82%;
	left: 50%;
	transform: translate(-50%, -50%);
	-ms-transform: translate(-50%, -50%);
	background-color: #090909C0;
	color: #fff;
	font-size: 2.3em;
	padding: 10px 40px;
	border: none;
	cursor: pointer;
	border-radius: 10px;
	text-decoration: none;
}
.os-img-container .os-dl-btn:hover {
	background-color: #000;
	color: #fff;
}

.os-img-container .os-other-download {
	position: absolute;
        top: 95%;
        width: 100%;
        display: block;
        text-align: center;
}
/* END Classes used within 'The Operating System' */

.styled-href-blue a,
.project-news-content a,
.styled-href-blue a:hover,
.project-news-content a:hover {
	text-decoration: none;
	position: relative;
	color: #3366FF;
}
.styled-href-blue a::after,
.project-news-content a::after {
	content: '';
	position: absolute;
	bottom: 0;
	left: 0;
	width: 0;
	border-bottom: 2px solid currentColor;
	transition: 0.35s;
}
.styled-href-blue a:focus::after,
.styled-href-blue a:hover::after,
.project-news-content a:focus::after,
.project-news-content a:hover::after {
	width: 100%;
}

/* Classes used within 'Project News' */
.project-news {
	margin-left: 15%;
	padding: 20px;
}
.project-news-content {
	padding-left: 110px;
	margin-top: -40px;
	font-size: 1.1em;
}
.project-news-content-end {
	position: relative;
	top: 38px;
	margin-bottom: 25px;
}
.end-of-list-arrow {
	width: 0;
	height: 0;
	-webkit-transform: rotate(360deg);
	-moz-transform: rotate(360deg);
	border-style: solid;
	border-width: 15px 0 15px 26px;
	border-color: transparent transparent transparent #999;
	position: relative;
	left: 3.5em;
	top: 24px;
}

/*
	The following rules are taken from https://codepen.io/denilsonsa/pen/Etrba
	but are modified to fit better into our design. 
*/
.date-as-calendar {
	font-variant: normal;
	font-style: normal;
	font-weight: normal;
	font-family: "Helvetica", "Arial", sans-serif;
	/* It seems vertical-align: baseline does not work correctly with display: inline-flex. */
	vertical-align: top;
	color: #000;
	background: #fff;
	background: linear-gradient(to bottom right, #fff 0%, #eee 100%);
	border: 1px solid #888;
	border-radius: 3px;
	overflow: hidden;
	box-shadow: 2px 2px 2px -2px #000;
}
.date-as-calendar .day,
.date-as-calendar .month,
.date-as-calendar .year {
	text-align: center;
	line-height: 1.0;
}
.date-as-calendar .month {
	font-family: "Oswald", sans-serif;
	text-transform: uppercase;
	background: #a00;
	background: linear-gradient(to bottom right, #b60109 0%, #a00 100%);
	color: #fff;
}

/* Layout rules using position: absolute and relative dimensions using em. */
.position-em.date-as-calendar {
	display: inline-block;
	position: relative;
	width: 4.4em;
	height: 2.6em;
}
.position-em.date-as-calendar .day,
.position-em.date-as-calendar .month,
.position-em.date-as-calendar .year {
	display: block;
	position: absolute;
	left: 0;
	right: 0;
	width: 100%;
	height: 1em;
}
.position-em.date-as-calendar .month {
	top: 0;
	font-size: 0.6em;
	padding: 0.2em 0;
	margin-top: -0.1em;
	line-height: 1.1em;
}
.position-em.date-as-calendar .day {
	top: .6em;
	font-size: 1.2em;
	margin-top: 0.1em;
}
.position-em.date-as-calendar .year {
	bottom: 0;
	font-size: 0.6em;
}

/* Multiple sizes. */
.date-as-calendar.size0_5x {
	font-size: 8px;
}
.date-as-calendar.size0_75x {
	font-size: 12px;
}
.date-as-calendar.size1x {
	font-size: 16px;
}
.date-as-calendar.size1_25x {
	font-size: 20px;
}
.date-as-calendar.size1_5x {
	font-size: 24px;
}
.date-as-calendar.size1_75x {
	font-size: 28px;
}
.date-as-calendar.size2x {
	font-size: 32px;
}
.date-as-calendar.size3x {
	font-size: 48px;
}
/* END Classes used within 'Project News' */

/* Classes used within 'Why Debian' */
ol.why-debian {
	list-style-type: none;
	list-style-type: decimal !ie; /*IE 7- hack*/
	margin: 0;
	font-size: 1.1em;
	padding-left: 15%;
	counter-reset: li-counter;
}
ol.why-debian > li {
	position: relative;
	margin: 1.5em 0 2.5em;
	padding: 1.3em;
	background-color: #eaeaea;
	max-width: 75%;
}

ol.why-debian > li:before {
	position: absolute;
	top: -0.5em;
	left: -0.8em;
	width: 1.8em;
	height: 1.2em;
	font-size: 2em;
	line-height: 1.2;
	font-weight: bold;
	text-align: center;
	color: #fff;
	background-color: #a80030;	/* The color of the swirl. */
	transform: rotate(-15deg);
	-ms-transform: rotate(-15deg);
	-webkit-transform: rotate(-15deg);
	z-index: 99;
	overflow: hidden;
	content: counter(li-counter);
	counter-increment: li-counter;
}
/* END Classes used within 'Why Debian' */

@media screen and (min-width: 800px) {
	.column {
		flex: 1;
	}
	.column-2-parts {
		flex: 2;
	}
	.column-3-parts {
		flex: 3;
	}
	.column-4-parts {
		flex: 4;
	}
}
@media(max-width: 1580px) {
	html {
		font-size: 15px;
	}
}
@media(max-width: 1250px) {
	html {
		font-size: 14px;
	}
}
@media(max-width: 980px) {
	html {
		font-size: 13px;
	}
}
@media(max-width: 800px) {
	html {
		font-size: 12px;
	}
}