/* roboto-200 - latin_latin-ext */
@font-face {
  font-display: swap;
  /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 200;
  src: url('../fonts/roboto-v47-latin_latin-ext-200.woff2') format('woff2');
  /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

/* roboto-200italic - latin_latin-ext */
@font-face {
  font-display: swap;
  /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Roboto';
  font-style: italic;
  font-weight: 200;
  src: url('../fonts/roboto-v47-latin_latin-ext-200italic.woff2') format('woff2');
  /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

/* roboto-300 - latin_latin-ext */
@font-face {
  font-display: swap;
  /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 300;
  src: url('../fonts/roboto-v47-latin_latin-ext-300.woff2') format('woff2');
  /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

/* roboto-300italic - latin_latin-ext */
@font-face {
  font-display: swap;
  /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Roboto';
  font-style: italic;
  font-weight: 300;
  src: url('../fonts/roboto-v47-latin_latin-ext-300italic.woff2') format('woff2');
  /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

/* roboto-regular - latin_latin-ext */
@font-face {
  font-display: swap;
  /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 400;
  src: url('../fonts/roboto-v47-latin_latin-ext-regular.woff2') format('woff2');
  /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

/* roboto-italic - latin_latin-ext */
@font-face {
  font-display: swap;
  /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Roboto';
  font-style: italic;
  font-weight: 400;
  src: url('../fonts/roboto-v47-latin_latin-ext-italic.woff2') format('woff2');
  /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

/* roboto-700 - latin_latin-ext */
@font-face {
  font-display: swap;
  /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 700;
  src: url('../fonts/roboto-v47-latin_latin-ext-700.woff2') format('woff2');
  /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

/* roboto-700italic - latin_latin-ext */
@font-face {
  font-display: swap;
  /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Roboto';
  font-style: italic;
  font-weight: 700;
  src: url('../fonts/roboto-v47-latin_latin-ext-700italic.woff2') format('woff2');
  /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

/* roboto-900 - latin_latin-ext */
@font-face {
  font-display: swap;
  /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 900;
  src: url('../fonts/roboto-v47-latin_latin-ext-900.woff2') format('woff2');
  /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

/* roboto-900italic - latin_latin-ext */
@font-face {
  font-display: swap;
  /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Roboto';
  font-style: italic;
  font-weight: 900;
  src: url('../fonts/roboto-v47-latin_latin-ext-900italic.woff2') format('woff2');
  /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

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

* {
  margin: 0;
  padding: 0;
}

:root {
  --layout-width: 90%;
  --layout-max-width: 50rem;
  --logo-text-color-yellow: #FFCC66;
  --logo-text-color-blue: #00BBFF;
  --header-background-color: #14434f;
  --dark-grey: #333;
}


ul[role='list'],
ol[role='list'] {
  list-style: none;
}

html:focus-within {
  scroll-behavior: smooth;
}

a:not([class]) {
  text-decoration-skip-ink: auto;
}

img,
picture,
svg,
video,
canvas {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
  font-style: italic;
  background-repeat: no-repeat;
  background-size: cover;
}

input,
button,
textarea,
select {
  font: inherit;
}

@media (prefers-reduced-motion: reduce) {
  html:focus-within {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
    transition: none;
  }
}

body,
html {
  font-family: 'Roboto', Arial, Helvetica, sans-serif;
  font-weight: 300;
  scroll-behavior: smooth;
  background-color: #F0F0F0;

}


h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: 'Roboto', Arial, Helvetica, sans-serif;
  font-weight: 300;
  color: #333;
}

p {
  font-family: 'Roboto', Arial, Helvetica, sans-serif;
  font-weight: 300;
  font-size: 1.125rem;
  color: #333;
  line-height: 1.5;
}

header,
main,
footer {
  width: var(--layout-width);
  max-width: var(--layout-max-width);
  margin: 0 auto;
  box-sizing: border-box;

}

.logo,
.logo:link,
.logo:visited .logo:hover {
  display: block;
  text-decoration: none;
  width: var(--layout-width);
  max-width: var(--layout-max-width);
  margin: 0 auto;
  position: sticky;
  top: 0;
  background-color: var(--header-background-color);
  color: white;
  padding: 20px;
  box-sizing: border-box;
  z-index: 1000;
}

.logo h4 {
  color: #FFF;
  font-size: 1rem;
  ;
}

.logo h1 {
  font-size: 2.5rem;
  display: inline-block;
}

@media screen and (min-width: 768px) {
  .logo h1 {
    font-size: 4rem;
  }

  .logo h4 {
    font-size: 1.25rem;
  }
  
}

.logo h1 span {
  display: inline-block;
}

.logo h1 span:first-child {
  color: var(--logo-text-color-yellow);
  font-weight: 700;
}

.logo h1 span:nth-child(2) {
  color: var(--logo-text-color-blue);
  font-weight: 500;
}

main {
  padding: 2rem;
  background-color: #FFF;;
}

.accordion-header {
  cursor: pointer;
  padding: 10px;
  background-color: #e2e2e2;
  margin: 0;
  transition: background-color 0.3s;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.accordion-header:hover {
  background-color: #ccc;
}

.arrow {
  transition: transform 0.3s ease;
}

.accordion-item.active .arrow {
  transform: rotate(90deg);
}


.accordion-content {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.4s ease;
  background-color: #f9f9f9;
  padding: 0 10px;
  /* nur links/rechts, top/bottom per JS */
  border-top: 1px solid #ddd;
}

.toc h2 {
  font-size: 1.5rem;
  margin: 1rem 0;
}

.toc .featured-issue{
  margin-bottom: 3rem;;
}

.toc ul {
  list-style: none;
  padding-left: 0;
}

.toc ul li {
  margin: 0.5rem 0 1rem 0;
}
.toc ul li a {
  text-decoration: none;
}

ul.toc ul li a:hover {
  opacity: 0.8;
}

.toc ul li a:hover h4
.toc ul li a:hover h3 {
  text-decoration: underline;
}

.toc ul li a h4{
  color:var(--logo-text-color-blue);
  font-size: 1.25rem;;
  font-weight: 700;
  text-transform: uppercase;
  text-wrap: balance;
  hyphens: auto;
}

.toc ul li a h3 {
  color:#333;
  font-weight: 700;
  font-size: 1.5rem;
  text-wrap: balance;
  hyphens: auto;
}

.breadcrumbs {
  width: var(--layout-width);
  max-width: var(--layout-max-width);
  margin: 0 auto;
  padding: 2rem 0;
}

.breadcrumbs ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

@media screen and (max-width: 767px) {
  .breadcrumbs li {
    display: block;
    padding: 0.5rem;
    margin-bottom: .5rem;
    background-color: #ddd;
  }
}

@media screen and (min-width: 768px) {
  .breadcrumbs li {
    display: inline-block;
    margin-right: .5rem;
  }

  .breadcrumbs li::after {
    transform: translateY(-4px);
    content: '/';
    margin-left: 1rem;
    display: inline-block;
    white-space: nowrap;    
  }

  .breadcrumbs li:last-child::after {
    content: '';
    margin-left: 0;
  }

}

.breadcrumbs a,
.breadcrumbs strong {
  display: inline-block;
  white-space: nowrap; 
  overflow: hidden;
  text-decoration: none;
  color: #666;
  font-weight: 700;
}

.breadcrumbs a:hover {
  color: #999;
}

.breadcrumbs a:visited,
.breadcrumbs a:active {
  color: #666;
}

.breadcrumbs strong {
  width: 100%;
  max-width: 36rem;;
  text-overflow: ellipsis;;
}

article h2 {
  font-size: 2rem;
  margin: 1rem 0;
  text-wrap: balance;
  hyphens: auto;
}

article h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 1rem 0;
  text-wrap: balance;
  hyphens: auto;
}

article h4 {
  font-size: 1.25rem;
  margin: 1rem 0;
  text-wrap: balance;
  hyphens: auto;
}

article p {
  margin: 1rem 0;
  text-wrap: pretty;
  hyphens: auto;
}

article ul,
article ol {
  margin: 1rem 0 2rem 0;
  padding-left: 1rem;
}

article ul li,
article ol li {
  margin: 0.5rem 0;
  font-size: 1.125rem;
  font-weight: 300;
  line-height: 1.5;
  color: #333;
  text-wrap: balance;
  hyphens: auto;
}

article ul li::marker,
article ol li::marker {
  font-weight: bold;
  display: inline-block;
  width: 1rem;
  margin-left: -1rem;
}

article figure {
  margin: 2rem 0;
  text-align: center;
}

article figure img {
  max-width: 100%;
  height: auto;
  margin: 0 auto;
}

article figure figcaption {
  font-size: 0.875rem;
  color: #666;
  margin-top: 0.5rem;
}

article figure figcaption span {
  display: block;
  text-align: left;
}

article sup{
  font-size: 0.75rem;
  color: #666;
}

article strong {
  font-weight: 700;
}

@media screen and (min-width: 768px) {
  article figure figcaption {
    display: flex;
    justify-content: space-between;
  }
}

article blockquote {
  border-left: 4px solid var(--logo-text-color-yellow);
  padding: 1rem;
  margin: 1rem 0;
  background-color: #f9f9f9;
  font-style: italic;
}

article .tagline{
  margin-bottom: .5rem!important;
  font-size: 1.125rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--logo-text-color-blue);
}

article .subline{
  font-style: italic;
}

article h2{
  margin-top: 0!important;
  font-size: 2.5rem;
  font-weight: 700;
  text-wrap: balance;
  hyphens: auto;
}

.author,
.footnote {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid #CCC;
}

@media screen and (min-width: 767px) {
  .author figure{
    display: grid;
    gap:3rem;
    grid-template-columns: 1fr 3fr;
    align-items: center;
  }
  
}



.author figure img {
  width: 100%;
  height: auto;
  max-width: 200px;
  margin: 0 auto 1rem auto; 
  border-radius: 50%;
}

.author figure figcaption {
  font-size: 1.125rem;
  line-height: 1.5;
  color: #666;
  text-align: left;
  text-wrap: pretty;
  hyphens: auto;

}

.vimeo-video {
  padding:56.25% 0 0 0;
  position:relative;
  margin: 2rem 0;
}

.footnote {
  font-size: 0.875rem;
  color: #666;
  margin: 1rem 0;
}

.footnote p{
  font-size: .875rem;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.gallery a{
  display: block;
  position: relative;
  overflow: hidden;
  transform: scale(1);
  transition: transform 0.3s ease;
}

.gallery a:hover img {
  transform: scale(1.1);
  transition: transform 0.3s ease;
}


footer {
    color: #F0F0F0;
    background-color: var(--dark-grey);
    text-align: center;
    padding: 3rem 0;
    font-size: 1rem;
    font-weight: 300;
}

footer nav {
    width: var(--layout-width);
    margin: 0 2rem 0 2rem;
    font-size: .875rem;
}

footer a:link,
footer a:visited,
footer a:hover,
footer a:active,
footer a:focus {
    color: #F0F0F0;
    text-decoration: none;
}

footer a:hover {
    color: #FFF;
}

footer p {
    margin-bottom: 0;
}

#forum_logo_footer {
    margin: .5rem auto;
}