html,
body {
    width: 100%;
    height: 100%;
    font-family: 'Open Sans','Helvetica Neue',Arial,sans-serif;
}

a {
    color: yellowgreen;
    -webkit-transition: all .35s;
    -moz-transition: all .35s;
    transition: all .35s;
}

a:hover,
a:focus {
    color: yellowgreen;
}

p {
    font-size: 16px;
    line-height: 1.5;
}

header {
    position: relative;
    width: 100%;
    height: auto;
    text-align: center;
    color: #15344b;
    background-position: center;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    background-size: cover;
    -o-background-size: cover;
}

header .header-content {
    position: relative;
    width: 100%;
    padding: 100px 15px 70px;
    text-align: center;
}

header .header-content .header-content-inner h1 {
    margin-top: 0;
    margin-bottom: 20px;
    font-size: 50px;
    font-weight: 300;
}

header .header-content .header-content-inner p {
    margin-bottom: 50px;
    font-size: 16px;
    font-weight: 300;
    color: rgba(255,255,255,.7);
}

@media(min-width:768px) {
    header {
        min-height: 100%;
    }

    header .header-content {
        position: relative;
        top: 100%;
        top: 100%;
        -webkit-transform: translateY(-50%);
        -ms-transform: translateY(-50%);
        transform: translateY(-50%);
        background-color: #fff;
    }

    header .header-content .header-content-inner {
        margin-right: auto;
        margin-left: auto;
        max-width: 1000px;
    }

	header .header-content .header-content-inner h1 {
    	font-size: 100px;
		}

    header .header-content .header-content-inner p {
        margin-right: auto;
        margin-left: auto;
        max-width: 80%;
        font-size: 18px;
        color: #15344b;
    }
}

.section-heading {
    margin-top: 0;
    margin-bottom: 20px;
}

.section-header {
    margin-top: 0;
    margin-bottom: 20px;
    text-align: center;
}

.home {
    color: #fff;
    background-color: #15344b;
    padding: 125px 0;
}

.infos {
    padding: 125px 0;  
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.video-wrapper video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%; 
}

.videos {
	color: #fff;
    background-color: #15344b;
    padding: 70px 0;
}

.row:after {
  content: "";
  display: table;
  clear: both;
}

.person {
    padding: 125px 0;
}

.publikationen {
	color: #fff;
    background-color: #15344b;
    padding: 125px 0;
}

.img-responsive {
    opacity: 1;
}

.img-link:hover {
    opacity: 0.3;
}

.vortraege {
    padding: 125px 0;
}

.auszeichnungen {
	color: #fff;
    background-color: #15344b;
    padding: 125px 0;
}

details summary{
    font-size: 16px;
    line-height: 1.5;
    color: yellowgreen;
    font-style: bold;
}

details[open] summary{
    font-size: 16px;
    line-height: 1.5;
    color: yellowgreen;
    font-style: bold;
}

/* Hero Overlay */
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(160deg, rgba(21, 52, 75, 0.92) 0%, rgba(21, 52, 75, 0.85) 50%, rgba(21, 52, 75, 0.92) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    z-index: 2;
}

.hero-title {
    color: #fff;
    font-size: 32px;
    font-weight: 300;
    letter-spacing: 0.05em;
    margin-bottom: 15px;
    text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.hero-subtitle {
    color: rgba(255,255,255,0.85);
    font-size: 16px;
    font-weight: 300;
    max-width: 600px;
    margin: 0 auto 30px;
    line-height: 1.6;
}

.hero-actions .btn {
    margin: 5px 8px;
}

@media(min-width:768px) {
    .hero-title {
        font-size: 52px;
        margin-bottom: 20px;
    }

    .hero-subtitle {
        font-size: 18px;
        margin-bottom: 40px;
    }
}

/* Referenzen */
.referenzen {
    padding: 80px 0;
    background-color: #15344b;
    color: #fff;
}

.referenzen .section-header {
    margin-bottom: 50px;
}

.referenzen .section-header h2 {
    color: #fff;
}

.referenzen-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.referenz-item {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 3 / 2;
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    transition: all .35s;
    text-decoration: none;
    padding: 20px;
    box-sizing: border-box;
    border: 1px solid rgba(255,255,255,0.15);
}

.referenz-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}

.referenz-logo-img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

@media(max-width:991px) {
    .referenzen-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 18px;
    }
}

@media(max-width:767px) {
    .referenzen-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
        max-width: 400px;
    }

    .referenz-item {
        padding: 14px;
    }
}

.page-footer {
	text-align: center;
	}

.page-footer .contact {
	padding: 50px 0;
	}

.page-footer .contact p {
	font-size: 22px;
	font-weight: 300;
	}
	
.content-3 .glyphicon,	
.page-footer .contact .glyphicon {
	font-size: 18px;
	font-weight: 700;
	}
		
.page-footer .impressum {
	padding: 50px 0; 
}

.page-footer .contact a {
    color: black;
}

.page-footer .small-print {
	padding: 50px 0 40px;
	font-weight: 300;
	}

.text-light {
    color: rgba(255,255,255,.7);
}

.navbar-default {
    border-color: rgba(34,34,34,.05);
    background-color: #fff;
    -webkit-transition: all .35s;
    -moz-transition: all .35s;
    transition: all .35s;
}

.navbar-default .navbar-header .navbar-brand {
    color: yellowgreen;
}

.navbar-default .navbar-header .navbar-brand:hover,
.navbar-default .navbar-header .navbar-brand:focus {
    color: yellowgreen;
}

.navbar-default .nav > li>a,
.navbar-default .nav>li>a:focus {
    color: #222;
}

.navbar-default .nav > li>a:hover,
.navbar-default .nav>li>a:focus:hover {
    color: yellowgreen;
}

.navbar-default .nav > li.active>a,
.navbar-default .nav>li.active>a:focus {
    color: rgba(255,255,255,.7);
    background-color: transparent;
}

.navbar-default .nav > li.active>a:hover,
.navbar-default .nav>li.active>a:focus:hover {
    background-color: transparent;
}

@media(min-width:768px) {
    .navbar-default {
        border-color: rgba(255,255,255,.3);
        background-color: transparent;
    }

    .navbar-default .navbar-header .navbar-brand {
        color: rgba(255,255,255,.7);
        letter-spacing: 0.5em;
    }

    .navbar-default .navbar-header .navbar-brand:hover,
    .navbar-default .navbar-header .navbar-brand:focus {
        color: #fff;
    }

    .navbar-default .nav > li>a,
    .navbar-default .nav>li>a:focus {
        color: rgba(255,255,255,.7);
    }

    .navbar-default .nav > li>a:hover,
    .navbar-default .nav>li>a:focus:hover {
        color: #fff;
    }

    .navbar-default.affix {
        border-color: #fff;
        background-color: #fff;
        box-shadow: 0px 7px 20px 0px rgba(0,0,0,0.1);
    }

    .navbar-default.affix .navbar-header .navbar-brand {
        letter-spacing: 0;
        color: #15344b;
    }

    .navbar-default.affix .navbar-header .navbar-brand:hover,
    .navbar-default.affix .navbar-header .navbar-brand:focus {
        color: yellowgreen;
    }

    .navbar-default.affix .nav > li>a,
    .navbar-default.affix .nav>li>a:focus {
        color: #15344b;
    }

    .navbar-default.affix .nav > li>a:hover,
    .navbar-default.affix .nav>li>a:focus:hover {
        color: yellowgreen;
    }
}

.dropdown:hover .dropdown-menu {display: block;}

.btn-default {
    border-color: #fff;
    color: #222;
    background-color: #fff;
    -webkit-transition: all .35s;
    -moz-transition: all .35s;
    transition: all .35s;
}

.btn-default:hover,
.btn-default:focus,
.btn-default.focus,
.btn-default:active,
.btn-default.active,
.open > .dropdown-toggle.btn-default {
    border-color: #eee;
    color: #222;
    background-color: #eee;
}

.btn-default:active,
.btn-default.active,
.open > .dropdown-toggle.btn-default {
    background-image: none;
}

.btn-default.disabled,
.btn-default[disabled],
fieldset[disabled] .btn-default,
.btn-default.disabled:hover,
.btn-default[disabled]:hover,
fieldset[disabled] .btn-default:hover,
.btn-default.disabled:focus,
.btn-default[disabled]:focus,
fieldset[disabled] .btn-default:focus,
.btn-default.disabled.focus,
.btn-default[disabled].focus,
fieldset[disabled] .btn-default.focus,
.btn-default.disabled:active,
.btn-default[disabled]:active,
fieldset[disabled] .btn-default:active,
.btn-default.disabled.active,
.btn-default[disabled].active,
fieldset[disabled] .btn-default.active {
    border-color: #fff;
    background-color: #fff;
}

.btn-default .badge {
    color: #fff;
    background-color: #222;
}

.btn-primary {
    border-color: yellowgreen;
    color: #fff;
    background-color: yellowgreen;
    -webkit-transition: all .35s;
    -moz-transition: all .35s;
    transition: all .35s;
}

.btn-primary:hover,
.btn-primary:focus,
.btn-primary.focus,
.btn-primary:active,
.btn-primary.active,
.open > .dropdown-toggle.btn-primary {
    border-color: limegreen;
    color: #fff;
    background-color: limegreen;
}

.btn-primary:active,
.btn-primary.active,
.open > .dropdown-toggle.btn-primary {
    background-image: none;
}

.btn-primary.disabled,
.btn-primary[disabled],
fieldset[disabled] .btn-primary,
.btn-primary.disabled:hover,
.btn-primary[disabled]:hover,
fieldset[disabled] .btn-primary:hover,
.btn-primary.disabled:focus,
.btn-primary[disabled]:focus,
fieldset[disabled] .btn-primary:focus,
.btn-primary.disabled.focus,
.btn-primary[disabled].focus,
fieldset[disabled] .btn-primary.focus,
.btn-primary.disabled:active,
.btn-primary[disabled]:active,
fieldset[disabled] .btn-primary:active,
.btn-primary.disabled.active,
.btn-primary[disabled].active,
fieldset[disabled] .btn-primary.active {
    border-color: yellowgreen;
    background-color: yellowgreen;
}

.btn-primary .badge {
    color: yellowgreen;
    background-color: #fff;
}


.btn {
    border-radius: 300px;
    text-transform: uppercase;
}

.btn-lg {
    padding: 15px 30px;
}

::-moz-selection {
    text-shadow: none;
    color: #fff;
    background: #222;
}

::selection {
    text-shadow: none;
    color: #fff;
    background: #222;
}

img::selection {
    color: #fff;
    background: 0 0;
}

img::-moz-selection {
    color: #fff;
    background: 0 0;
}

.text-primary {
    color: yellowgreen;
}

.bg-primary {
    background-color: yellowgreen;
}