/* Style sheet for Myrthe Spronck's personal webpage */

/* Colour variables & sizes */
:root {
  --white: white;
  --black: black;
  --main-dark:  #102D26;
  --main-medium: #256A5A;
  --main-light: #F1FAF5;
  --contrast-dark: #3B3C68;
  --contrast-medium: #4F518C;
  --contrast-light: #898BBD;

  --font-size-biggest: 28px;
  --font-size-header: 22px;
  --font-size-subheader: 18px;
  --font-size-subsubheader: 16px;
  --font-size-navbar: 16px;
  --font-size-footer: 12px;
  --font-size-tiny: 10px;
  --font-size-normal: 16px;

  --header-height: calc(9px*7);
  --navbar-height: 44px;
  --footer-height: 30px;
  --page-width: 950px;
  --header-image-width: calc(9px*38);
  --min-header-width: 460px;

  --padding-small: 5px;
  --padding-medium: 10px;
  --padding-big: 16px;
  --padding-text: 1.5em;
}

/* Layout basic, main, footer, header, navbar */
body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  background-color: var(--main-light);
  color: var(--black);
  font-size: var(--font-size-normal);
}

.base-layout {
  position:relative;
  min-height: 100vh;
  overflow: visible;
}

main {
  padding-top: var(--padding-medium);
  padding-bottom: calc(var(--footer-height) + var(--padding-medium));
  padding-left: 5%;
  padding-right: 5%;
  background-color: var(--main-light);
  margin-left: auto;
  margin-right: auto;
  max-width: var(--page-width);
  min-height: calc(100vh - var(--footer-height) - var(--navbar-height) - var(--header-height) - 50px);
}

header {
  display: flex;
  padding: 0px;
  text-align: center;
  background-color: var(--main-dark);
  color: var(--main-dark);
  height: var(--header-height);
  place-content: center;
  place-items: center;
}

header h1 {
  font-size: var(--font-size-biggest);
  margin-top: 0px;
  margin-bottom: 0px;
  background-color: var(--main-light);
  padding-top: calc((var(--header-height) - var(--font-size-biggest)) / 2);
  padding-bottom: calc((var(--header-height) - var(--font-size-biggest)) / 2);
  padding-left: 0px;
  padding-right: 0px;
  min-width: var(--min-header-width);
  white-space: nowrap;
}

header .header-left {
  height: var(--header-height);
  width: var(--header-image-width);
  background-image: url("../images/left.png");
  background-repeat: repeat-y;
  background-position: right top;
  pointer-events: none;
  cursor: default;
}

header .header-right {
  height: var(--header-height);
  width: var(--header-image-width);
  background-image: url("../images/right.png");
  background-repeat: repeat-y;
  background-position: left top;
  pointer-events: none;
  cursor: default;
}

@media screen and (max-width: 600px) {
  header {
    overflow-wrap: break-word;
  }

  header h1 {
    width: 100%;
    padding-left: 0px;
    padding-right: 0px;
    font-size: var(--font-size-header);
    white-space: normal;
    min-width: auto;
    padding-top: calc((var(--header-height) - var(--font-size-header)) / 2);
    padding-bottom: calc((var(--header-height) - var(--font-size-header)) / 2);
  }

  header .header-left {
    display: none
  }

  header .header-right {
    display: none
  }
}

nav {
  height: var(--navbar-height);
  overflow: hidden; 
  background-color: var(--main-medium); 
  text-align: center;
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-content: center;
  align-items: center;
  font-size: var(--font-size-navbar);
  z-index: 100;
}

nav a {
  float: none; 
  display: inline-block; 
  color: var(--main-light); 
  text-align: center; 
  padding-left: var(--padding-big); 
  padding-right: var(--padding-big);
  padding-top: calc((var(--navbar-height) - var(--font-size-navbar)) / 2);
  padding-bottom: calc((var(--navbar-height) - var(--font-size-navbar)) / 2);
  text-decoration: none; 
  font-weight: bold;
}

nav a:hover {
  background-color: var(--main-light); 
  color: var(--main-dark); 
}

nav .small-nav-toggle {
  display: none;
}

.noscript {
  background-color: var(--main-dark);
  color: var(--main-light);
  text-align: center;
  padding-top: var(--padding-medium);
  padding-bottom: var(--padding-medium);
  width: 100%;
}

@media screen and (max-width: 600px) {
  nav {
    background-color: var(--contrast-dark);
  }

  nav a {
    display: none;
    width: 100%;
    padding-top: calc((var(--navbar-height) - var(--font-size-navbar)) / 4);
    padding-bottom: calc((var(--navbar-height) - var(--font-size-navbar)) / 4);
  }

  nav .navbar-first {
    padding-top: calc((var(--navbar-height) - var(--font-size-navbar)) / 2);
  }

  nav .navbar-last {
    padding-bottom: calc((var(--navbar-height) - var(--font-size-navbar)) / 2);
  }

  nav .small-nav-toggle {
    display: inline-block;
    background-color: var(--main-medium);
    padding-top: calc((var(--navbar-height) - var(--font-size-navbar)) / 2);
    padding-bottom: calc((var(--navbar-height) - var(--font-size-navbar)) / 2);
  }

  nav a:hover {
    background-color: var(--contrast-light); 
    color: var(--contrast-dark); 
  }

  nav .small-nav-toggle:hover {
    background-color: var(--contrast-medium);
    color: var(--main-light);
  }
}

@media screen and (max-width: 600px) {
  .small-nav-visible {
    height: auto;
    flex-direction: column;
  }

  .small-nav-visible a {
    display: inline-block;
  }

  .small-nav-visible .small-nav-toggle {
    background-color: var(--contrast-medium);
  }
} 

footer {
  padding: 0px; 
  text-align: center; 
  position: absolute;
  width: 100%;
  height: var(--footer-height);
  bottom: 0; 
  font-size: var(--font-size-footer);
  border-style: solid none none none;
  border-width: medium;
  color: var(--main-light);
  background: var(--main-medium);
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer p {
  margin-top: 0px;
  margin-bottom: 0px;
} 


/* Basic elements */
body h2 {
  font-size: var(--font-size-header);
  color: var(--main-dark);
}

/* Lists */
ul {
  list-style-type:square;
  margin-top: var(--padding-small);
}

ul ul {
  list-style-type:disc;
}

.pre-list {
  margin-bottom: 0px;
  padding-bottom: 0px;
}

/* Notes */
.tiny-note {
  font-size: var(--font-size-tiny);
  color:var(--main-dark);
  padding: 0px;
}

/* Links */
main a:link {
  color: var(--contrast-medium);
}

main a:visited {
  color: var(--contrast-light);
}

.noscript a:link {
  color: var(--contrast-light);
}

.noscript a:visited {
  color: var(--contrast-light);
}

/* Collapsibles */
.collapsible-block {
  display: block;
  margin-top: 1em;
  margin-bottom: 1em;
  margin-left: 0;
  margin-right: 0;
}

.collapsible-header {
  background-color: var(--main-light);
  color: var(--black);
  cursor: pointer;
  width: auto;
  border: none;
  text-align: left;
  outline: none;
  font-size: var(--font-size-subheader);
  font-weight:bold;
}

.collapsible-header-small {
  font-weight: normal;
  font-style: italic;
}

.collapsible-header:before {
  content: '▶'; 
  font-size: var(--font-size-subheader);
  color: inherit;
  float: left;
  font-style: normal;
  padding: 0px;
  line-height: 115%;
}

.collapsible-header-small:before {
  font-size: var(--font-size-normal);
}

.collapsible-header:hover {
  color: var(--contrast-medium);
}

.collapsible-active:before {
  content: "▼"; 
}

.collapsible-content {
  display: block;
  overflow: hidden;
  background-color: var(--main-light);
} 

.collapsible-subheader {
  padding-left: var(--padding-text);
}

.collapsible-content ul {
  margin-top: var(--padding-medium);
  margin-bottom: var(--padding-small);
  margin-left: 1em;
}

.collapsible-content ul ul {
  margin-top: 0px;
  margin-bottom: 0px;
  margin-left: 0px;
}

/* Text formatting for papers*/
.paper-title {
  font-style: normal;
  font-weight: bold;
  font-size: var(--font-size-subsubheader);
  padding-left: var(--padding-text);
}

.paper-authors {
  font-style: italic;
  font-size: var(--font-size-subsubheader);
  padding-left: var(--padding-text);
}

.paper-published {
  font-size: var(--font-size-subsubheader);
  padding-left: var(--padding-text);
  font-style: normal;
}

.paper-info ul {
  margin-top: var(--padding-small);
  margin-bottom: 0px;
}

.paper-info ul li {
  padding-top: 1px;
  padding-bottom: 1px;
}

/* prevent images from being dragged */
img {
  pointer-events: none;
  cursor: default;
}

/* positioning on index page */
.index-main {
  display:grid;
  grid-template-columns: auto auto;
  column-gap: 50px;
  justify-content: space-between;
  align-content: start;
}

.index-text {
  max-width: calc(var(--page-width) - 275px);
}

.index-image {
  text-align: center;
  max-width: 275px;
  min-width: 100px;
  position: relative;
  top: 25px;
}

@media screen and (max-width: 600px) {
.index-main {
  grid-template-columns: none;
  grid-template-rows: auto auto;
  row-gap: var(--padding-big);
}

.index-image {
  justify-self: center;
  position: unset;
}

}