/* Stylesheet für Selfhtml Design 03 
  responsives Layout mit Grid Layout ab Z. 210
  Link: https://wiki.selfhtml.org/wiki/CSS/fertige_Layouts/Design03
*/

/* ====================================================   GLOBAL DEFINITION   ==================================================== */

/* alternatives Boxmodell */
html {
	box-sizing: border-box;
	background: #d5d5d5;
}

*, ::before, ::after {
	box-sizing: inherit;
}

body {
	max-width: 75em;
	margin: 0 auto;
	padding: 0;
	background: #fff;
	color: #333;
	font: normal 1em Arial, sans-serif;
	/* Mindestschriftgröße wird dem Browser, bzw. dem Nutzer überlassen! */
}

/* ====================================================   HEADER   ==================================================== */
header {
	position: relative;
	height: 210px;
	margin: 2em 0 0 3em;
	background: #3a3a3a url("../img/head.jpg") no-repeat right;
	/* RR: angepasst an Grauwert head.jpg / head.jpg erstellt */
	background-size: contain;
	padding: 0 0 0.5em;
}

header a h1,
header a p {
	/* Die Angaben für h1 müssen mit einem genauen Selektor überschrieben werden. */
	color: white;
	border-left: 0;
	padding: 0;
	display: table;
	/* Überschriften und Absätze sind sonst immer 100% breit, durch display:table und display: inline-block; für das Elternelement a.ribbon wird das Banner nur so breit wie nötig. */
}

.ribbon {
	display: inline-block;
	position: relative;
	margin: 2em 0 2em -1.5em;
	padding: 0.5em 1em;
	background: #4e7a92;
	box-shadow: 0px 1px 3px rgba(0, 0, 0, .8);
}

.ribbon::before {
	display: block;
	width: 1.5em;
	height: 0;
	position: absolute;
	bottom: -1.5em;
	left: 0em;
	content: "";
	border-bottom: 1.5em solid transparent;
	border-right: 1.5em solid rgb(0, 80, 116);
}

/** CONTENT **/
main {
	margin: 0 0 1em;
	padding: 1em;
	background: #fff;
}

h1,
h2 {
	font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif;
	padding-left: 1em;
	color: #666;
	text-transform: uppercase;
	border-left: 5px solid #4e68AD;
}

h2 span {
	font-size: 0.70em;
	color: #818181;
	text-transform: none;
}

h3 {
	font-size: 1.25em;
	font-weight: normal;
	padding: 0px;
	margin: 0px;
	color: #4E68AD;
	counter-reset: ebene4;
}

h4:before {
	content: counter(ebene4) ". ";
	counter-increment: ebene4
}

h4 {
	font-size: 1.15em;
	font-weight: normal;
	padding-left: 2em;
}

h4+p { /* Einrückung für Absatz unterhalb h4*/
	padding-left: 2.15em;
	margin-top: -15px;
}

p {
	text-align: left;
	line-height: 1.6em;
	padding: 20px 0px;
}

a {
	color: #4e7a92;
	outline: none;
	text-decoration: none;
}

a:hover,	/* Durch Maus oder Tastatur angewählte Verweise werden sichtbar gemacht */
a:focus {
	color: white;
	text-decoration: none;
	background-color: #4e7a92;
}

a.more {
	float: right;
	font-weight: bold;
}

a.more:after {
	content: " \2192 ";
	font-size: 1.2em;
	font-weight: bold;
}

ul.square {
	list-style-type: square;
	color: #999999;
	margin: 0 0 0.5em 0.5em;
	font-size: 0.8em;
	font-weight: bold;
}

ul.square li {
	padding: 10px;
}

/*DL, DT, DD Datenliste*/
dl.grid {
	display: grid;
	grid-template-columns: 1fr 100%;
}

dd {
	margin: 0;
	padding-left: 1em;
}

dd span:first-child {
	display: inline-block;
	width: 4em;
}

dl.grid dd {
	margin-bottom: 1em;
}

a[href^="tel"] {
	white-space: nowrap;
}

a[href^="fax"] {
	white-space: nowrap;
}

ul#footer-nav li {
	list-style-type: none;
	displaY: inline;
	padding: 0 0.5em;
	border-right: 1px solid #ACACAC;
}

footer {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	padding: 1em;
}

ul#footer-nav  li:last-child {
	border: none;
}

ul#footer-nav img {
	width: 1.5em;
}

ul#footer-nav a:hover,
ul#footer-nav a:focus,
ul#footer-nav a:active {
	background: white;
}

footer p {
	text-align: right;
}

/** Navigation **/
nav#navigation {	
}

#navigation ul {
	list-style-type: none;
	width: 100%;
	margin-bottom: 30px;
}

#navigation ul li.first-child {
	border-top: 1px #DBDBDB solid;
}

#navigation ul li a {
	display: block;
	border-bottom: 1px solid #4e7a92;
	font-size: 1.1em;
	line-height: 1.5em;
	padding: 1em 35px;
	text-decoration: none;
	width: 13em;
}

#navigation ul li a:before {
	content: " ";
	display: inline-block;
	width: 1em;
	height: 1em;
	border-left: 5px solid #4e7a92;;
}

nav a[aria-current=page] {
	background: #aaa;
}


/* ========== 'back to top'- button (RR 03.03.2020) ========== */
.back-to-top {
    background-color: #666;
    color: #FFFFFF;
    opacity: 0;
    transition: opacity .6s ease-in-out;
    z-index: 990;
    position: fixed;
    right: 20px;
    bottom: 20px;
    width: 50px;
    height: 50px;
    box-sizing: border-box;
    border-radius: 0%;
    display: inline;
}

a.back-to-top {
    font-weight: 1000;
    letter-spacing: 2px;
    font-size: 14px;
    text-transform: uppercase;
    text-align: center;
    line-height: 1.6;
    padding-left: 2px;
    padding-top: 14px;
}

.back-to-top:hover, .back-to-top:focus, .back-to-top:visited {
    color: #FFFFFF;
}

.back-to-top.show {
    opacity: 0.8;
}


/* ========== 'cookie banner'- button (RR 15.11.2022) ========== */
/* Attention: dont't use the class name 'cookie-banner' for Strato hosting */
.simple-cookie-banner {
    color: white;
    background-color: #aaa;
    padding: 20px;
    position: fixed;
    bottom: 15px;
    width: 100%;
    height: 60px;
    z-index: 980;	/* should be smaller than '.back-to-top'
    display: none;	/* initial not shown; switched by javascript */
}


/* ========== repsonsives Grid-Layout ========== */

/* mobile first - auf schmalen Bildschirmen wird alles untereinander platziert. */

/* ab einer Breite von 30em haben zwei Spalten nebeneinander Platz: */
@media ( min-width : 30em) {
	main {
		display: grid;
		grid-template-columns: repeat(2, 1fr);
		grid-gap: 0em; /* RR: war 1em */
	}
	nav {
		grid-column: 1 / 2;
	}
	#intro {
		grid-column: 2 / 3;
		grid-row: 1 / 2;
	}
	article {
		grid-column: 2 / 3;
	}
	.spalte img {
		width: 50%;
		float: left;
		margin-right: 0.5em;
	}
}

@media ( min-width : 50em) {
	main {
		grid-template-columns: repeat(3, 1fr);
	}
	nav {
		grid-row: 1 / 4;
	}
	#intro {
		grid-column: 2 / 4;
		grid-row: 1 / 2;
	}
	article {
		grid-column: 2 / 4;
	}
	aside {
		grid-column: 3 / 4;
		grid-row: 1 / 2;
	}
	.spalte {
		grid-row: 2 / 3;
	}
	.spalte img {
		width: 33%;
	}
}