/* General Styling */

body {
  font: 1em/150% -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif,
    "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  color: #000;
  margin: 0;
  background-color: #fee6a9;
  line-height: 1.6;
}

#kontakt-btn, .contact-btn {
  border: thick solid #b70b0b;
  border-radius: 10px;
  padding: 5px;
  font-weight: bold;
  color: white;
  background-color: #b70b0b;
}

.small-img {
  width: 150px;
  vertical-align: middle;
}

.small-img-v {
  height: 150px;
  vertical-align: middle;
}

.padding-10px {
  padding: 10px;
}

.padding-bottom-10px {
  padding-bottom: 10px;
}

.width-300px {
  width: 300px;
}

.width-500px {
  width: 500px;
}

.drop-shadow {
  box-shadow: 0px 7px 20px grey;
}

.center-img {
  display: block;
  margin: auto;
}

.width-100-percent {
  width: 100%;
}

.left-margin-50 {
  margin-left: 50px;
}

.float-left {
  float: left;
}

.float-right {
  float: right;
}

#preise {
  border-collapse: collapse;
}

#preise td {
  border: 1px solid black;
  padding: 5px;
}

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

#video-div-wrap {
  max-width: 700px;
  margin: auto;
}

.book-right {
  float: right;
  margin-left: 20px;
}

.book-left {
  float: left;
  margin-right: 20px;
}

.author {
  font-weight: normal;
}

h1 a, h2 a, h3 a, h4 a, h5 a, h6 a {
  color: black;
}

.book-left, .book-right {
  height: 300px;
  margin-bottom: 20px;
  clear: both;
}

.book-stack {
  clear: none !important;
}

input[type=text], input[type=email], input[type=submit], textarea {
  width: 100%;
  max-width: 500px;
  box-sizing: border-box;
}

input, textarea {
  font-size: 16pt;
}

textarea {
  height: 10em;
}

#contact-success {
  display: none;
  background-color: #aef3ae;
}

#contact-success p {
  padding: 20px;
}

#contact-success:target {
  display: block;
}

#contact-error {
  display: none;
  background-color: #f3aeae;
}

#contact-error p {
  padding: 20px;
}

#contact-error:target {
  display: block;
}

hr {
  clear: both;
}

#bgwrapper {
  z-index: -1;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
}

#bgmiddle {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}

#background {
  position: absolute;
  left: -9999px;
  right: -9999px;
  margin-left: auto;
  margin-right: auto;
  display: block;
  /* keep image scale */
  width: auto;
  height: auto;
  /* no gaps */
  min-height: 100%;
  min-width: 100%;
  /* portrait: width = img height * 1.5, causing overflow */
  max-width: 150.5vh;
}

a {
  color: #026acb;
  text-decoration: none;
  outline: none;
}

a:hover {
  text-decoration: underline;
}

p {
  margin: 0 0 1.2em;
  padding: 0;
  color: #000;
}

img {
  max-width: 100%;
  width: auto;
  height: auto;
  vertical-align: top;
}

/* needed for IE11 compatibility */
main, section, footer {
  display: block;
}

.clear-both {
  clear: both;
}

/* clearfix */
#content::after {
  clear: both;
  content: "";
  display: table;
}

#pagewrap::after {
  clear: both;
  content: "";
  display: table;
}

#yt-embed-outer-div {
  position: relative;
  padding-bottom: 56.25%;
  padding-top: 25px;
  height: 0;
}

#yt-embed-iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}


/* Structure */

#pagewrap {
  max-width: 60rem;
  margin: 0 auto;
  padding: 20px;
}

@supports(padding: max(0px)) {
  #pagewrap {
    padding-left: max(20px, env(safe-area-inset-left));
    padding-right: max(20px, env(safe-area-inset-right));
    padding-top: max(20px, env(safe-area-inset-top));
    padding-bottom: max(20px, env(safe-area-inset-bottom));
  }
}

/* Logo */

#logo {
  box-shadow: 0 1px 3px rgba(0, 0, 0, .4);
  background-color: #e6f3ff;
}

#logo a {
  text-decoration: none;
    display: block;
    padding: 10px;
    background: white;
}

#logo-text {
  color: #0f0d52;
  text-align: center;
  font-weight: bold;
  padding: 5px;
  font-size: larger;
  margin-bottom: 0px;
}

#logo-text-2 {
  color: #0f0d52;
  text-align: center;
  font-weight: bold;
  padding: 5px;
}

/* Main Navigation */

nav {
  margin: 40px 0 20px 0;
  padding: 0 10px;
  overflow: hidden;
  background: #fefefe;
  box-shadow: 0 1px 3px rgba(0, 0, 0, .4);
}

#nav-trigger, label[for=nav-trigger] {
  display: none;
}

.nav-list {
  list-style-type: none;
  margin: 0;
  padding: 0;
}

.nav-list li {
  float: left;
}

.nav-list a {
  display: block;
  color: black;
  text-align: center;
  padding: 14px 10px;
  text-decoration: none;
  font-size: 0.81em;
}

.bold {
  font-weight: bold;
}

#nav-languages {
  display: block;
  float: right;
  text-align: center;
  padding: 14px 16px;
  font-size: 0.81em;
}

#nav-languages .current-lang {
  text-decoration: underline;
}

#nav-languages a {
  color: black;
  text-decoration: none;
}

.nav-list li:hover {
  background: #aaa;
}

.nav-current {
  background: #ddd;
}

@media screen and (max-width: 800px) {
  label[for=nav-trigger] {
    display: block;
    float: right;
    padding: 14px 16px;
    text-align: center;
    cursor: pointer;
  }
  nav {
    padding: 0;
  }
  .nav-list {
    display: none;
  }
  #nav-trigger:checked ~ .nav-list {
    display: block;
  }
  #nav-trigger:checked ~ .nav-list li {
    display: block;
    float: none;
    clear: both;
  }
  #nav-languages {
    float: left;
  }
}


/* Content */

#content-wrapper {
  width: 100%;
  margin: 0;
}

#content {
  background: #fefefe;
  padding: 20px 20px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, .4);
  margin-bottom: 20px;
}

td {
  vertical-align: top;
}

tr td:first-child {
  white-space: nowrap;
  padding-right: 10px;
}


/* Sidebar */

#sidebar {
  width: 200px;
  float: right;
}

#sidebar img {
  margin: 0 auto 20px auto;
  width: 100%;
  display: block;
  /* IE 10 compatibility */
  border: 0;
  background: white;
  box-shadow: 0 1px 3px rgba(0, 0, 0, .4);
}

#sidebar a:last-child img {
  margin: 0 auto;
}

/* Footer */

#footer, #video {
  background: #fefefe;
  padding: 20px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, .4);
  margin-bottom: 20px;
}


/* Main index page photo */

.floating-photo {
  max-width: 270px;
  float: right;
  margin: 0 0 10px 10px;
}

.container-404 {
  margin: 10px auto;
  max-width: 600px;
  text-align: center;
}
.container-404 h1 {
  margin: 30px 0;
  font-size: 4em;
  line-height: 1;
  letter-spacing: -1px;
}

.dotnet-cert-img {
  max-width: 440px;
}

@media screen and (max-width: 600px) {
  .floating-photo,
  .floating-photo img,
  .floating-photo amp-img {
    max-width: 100%;
    float: none;
    margin: 0;
  }
}

/* Text colors */

.red { color: red; }
.dark-green { color: green; }
.light-green { color: #c3d117; }
.blue { color: blue; }
.orange { color: orange; }
.grey { color: #555; }
.brown { color: brown; }
.purple { color: purple; }
.dark-purple { color: #1b007c; }
.orange-red { color: #e22400; }
.dark-teal { color: #00374a; }
.warm-green { color: #316900; }
.dark-red { color: #c60000; }

/* Slideshow */

.slideshow-slide {
  display: none;
}

.slideshow-dot {
  cursor: pointer;
  height: 15px;
  width: 15px;
  margin: 0 2px;
  background-color: #bbb;
  border-radius: 50%;
  display: inline-block;
  transition: background-color 0.6s ease;
}

.slideshow-dot:hover {
  background-color: #717171;
}

#slideshow-trigger-1:checked ~ div #slideshow-dot-1,
#slideshow-trigger-2:checked ~ div #slideshow-dot-2,
#slideshow-trigger-3:checked ~ div #slideshow-dot-3,
#slideshow-trigger-4:checked ~ div #slideshow-dot-4,
#slideshow-trigger-5:checked ~ div #slideshow-dot-5,
#slideshow-trigger-6:checked ~ div #slideshow-dot-6 { background-color: #717171; }

.slideshow-trigger:checked + .slideshow-slide {
  display: block;
}

.slideshow-trigger {
  display: none;
}

/* Media Queries */

@media screen and (max-width: 800px) {
  body {
    font-size: 12pt;
  }
  #pagewrap {
    padding: 10px;
  }
  nav {
    margin: 10px 0;
  }
  #sidebar {
    width: 100%;
    float: none;
    margin: 0;
  }
  #sidebar img {
    width: 200px;
    margin: 0 auto 10px auto;
  }
  #content-wrapper {
    margin: 10px 0;
  }
  #content {
    padding: 10px;
    margin-bottom: 10px;
  }
  .nav-list a, #nav-languages {
    font-size: 1em;
  }
}

@media screen and (max-width: 400px) {
  .book-right, .book-left {
    float: none;
    width: 100%;
    height: inherit;
    margin: 0;
  }
}