/* CSS Reset: http://meyerweb.com/eric/tools/css/reset */

html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
}
/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
  display: block;
}
body {
  line-height: 1;
}
ol, ul {
  list-style: none;
}
blockquote, q {
  quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
  content: '';
  content: none;
}
table {
  border-collapse: collapse;
  border-spacing: 0;
}

/**************************************************/

#body{
  font-family: 'Inter', sans-serif;
  font-size: 1.25em;
  line-height: 1.5em;
  color: #150c21;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Newsreader', serif;
}


#main {
  width: 54em;
  margin: 0px auto;
  position: relative;
  min-height: 100vh;
}

a {
  text-decoration: none;
  color: rgb(20, 110, 190);
}

a:hover {
  text-decoration: none;
  border-bottom: 1px solid rgb(20, 110, 190);
}

i {
  font-style: italic;
}

b {
  font-weight: 700;
}

h1 {
  font-size: 2.8em;
  line-height: 2.8em;
  font-weight: 500;
}

/**************************************************/
/* Profile image and description. */

#intro {
  padding-top: 6em;
  display: flex;
}

#intro-text {
  width: 40em;
  float: left;
}

#intro-image {
  margin: 3em 0 0 2em;
  width: 12em;
  height: 12em;
  float: left;
  overflow: hidden;
  border-radius: 50%;
}

#intro-image img {
  width: 12em;
}

 


/**************************************************/
/* Section buttons. */

#menu {
  display: flex;
}

.menu-item {
  float: left;
  margin-right: 2em;
}

h2 {
  font-size: 1.6em;
  line-height: 2.4em;
  margin-top: 0.5em;
  color: #a0a8b0;
}

.selected h2 {
  color: #150c21;
}

.button {
  display: inline-block;
  cursor: pointer;
  border: none;
  background: none;
  color: #a0a8b0;
  font-size: 1.8em;
  line-height: 2.4em;
  margin-top: 0.5em;
  margin-right: 1em;
  float: left;
  padding: 0;
  font-family: 'Newsreader', serif;
}

.button:hover {
  color: #150c21;
}

.button:active,
.button.is-checked {
  color: #150c21;
}

.button-group:after {
  content: '';
  display: block;
  clear: both;
}

/**************************************************/
/* Isotope grid list of items. */

.grid {
  padding-bottom: 6em;
}

/* clear fix */
.grid:after {
  content: '';
  display: block;
  clear: both;
}

.description {
  margin-bottom: 1em;
  padding-bottom: 0.5em;
}

.list-item {
  width: 100%;
  line-height: 1em;
  margin-top: 1em;
}

.list-item p.date {
  display: inline-block;
  width: 3em;
  color: #a0a8b0;
}

/**************************************************/
/* Gallery of 3 preview videos. */

.previews {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  grid-auto-rows: minmax(100px, auto);
  height: 12.5em;
}

.previews video {
  border-radius: 5px;
}

.previews a:hover {
  border: none;
}

.preview1 {
  grid-column: 1;
  width: 100%;
}
.preview2 {
  grid-column: 2;
  width: 100%;
}
.preview3 {
  grid-column: 3;
  width: 100%;
}

/**************************************************/
/* Buttons for showing more or less highlights. */

.toggle-button {
  margin-top: 1em;
}

.toggle-button a {
  color: #a0a8b0;
}

.toggle-button a:hover {
  color: rgb(20, 110, 190);
}

/**************************************************/
/* Publication details (thumbnail media, title, and description). */

.thumbnail {
/*  width: 21%;*/
  width: 18%;
  float: left;
  margin-right: 2%;
}

.thumbnail:hover {
  border-bottom: none;
}

.thumbnail img {
  margin-top: 0.4em;
  border-radius: 5px;
  width: 100%;
  height: 100%;
}

.thumbnail video {
  margin-top: 0.4em;
  border-radius: 5px;
  width: 100%;
  height: 100%;
}

h3 {
  font-size: 1.35em;
  line-height: 1.45em;
  font-weight: 400; 
}
h3 a {
  color: #150c21;
}

h3 a:hover {
  color: rgb(20, 110, 190);
}

.publication {
  margin-bottom: 0.5em;
}

.publication p {
  font-size: 1em;
  line-height: 1.5em;
  color: #000000;
}

.project-description {
  width: 80%;
  float: left;
}

/**************************************************/
/* Subtle footer at the bottom of the page. */

#footer {
  color: #a0a8b0;
  position: absolute;
  bottom: 0;
  line-height: 2.5em;
}

#intro-text h1 {
  text-align: left;
}

#back-to-top {
  position: fixed;
  bottom: 2em;
  right: 2em;
  width: 2.8em;
  height: 2.8em;
  border-radius: 50%;
  background: #150c21;
  color: white;
  font-size: 1.2em;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 1000;
}

#back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

#back-to-top:hover {
  border-bottom: none;
  background: rgb(20, 110, 190);
}

#main-research {
  line-height: 1.5em;
}

.list-item.publication {
  display: flex;
  align-items: center;
  gap: 25px;
  margin-bottom: 2em;
}

.list-item.publication .thumbnail {
  flex: 0 0 280px;          /* fixed-width thumbnail column */
  display: block;
}

.list-item.publication .thumbnail img {
  width: 100%;
  height: auto;
  border-radius: 4px;
  display: block;
  margin-top: 0;          /* add this line */
}

.list-item.publication .project-description {
  flex: 1;
}

/* keep the "View my Google Scholar" line full-width, not in a flex row */
.list-item.publication.description {
  display: block;
}

.paper-summary {
  margin-top: 8px;
}

.paper-summary summary {
  cursor: pointer;
  font-size: 0.9em;
  color: #555;
  font-style: italic;
  list-style: none;          /* hide default triangle */
  display: inline-block;
  user-select: none;
}

/* hide the default triangle in Safari/Chrome */
.paper-summary summary::-webkit-details-marker {
  display: none;
}

/* custom toggle indicator */
.paper-summary summary::before {
  content: "+";
  display: inline-block;
  margin-right: 5px;
  transition: transform 0.3s ease;
  color: #888;
}

.paper-summary[open] summary::before {
  content: "−";
}

.paper-summary summary:hover {
  color: #000;
}

.paper-summary p {
  margin-top: 12px;
  font-size: 0.92em;
  line-height: 1.5;
  color: #333;
  max-width: 65ch;          /* keeps long paragraphs readable */
}

/**************************************************/
/* Mobile styles (anything narrower than the 54em main column). */

@media (max-width: 56em) {
  #main {
    width: auto;
    max-width: 100%;
    padding: 0 1.25em;
    box-sizing: border-box;
  }

  #intro {
    padding-top: 3em;
    flex-direction: column-reverse; /* photo on top, text below */
    align-items: flex-start;
  }

  #intro-text {
    width: 100%;
  }

  #intro-image {
    margin: 0 0 1.5em 0;
    width: 8em;
    height: 8em;
  }

  #intro-image img {
    width: 8em;
  }

  h1 {
    font-size: 2.2em;
    line-height: 1.2em;
    margin-bottom: 0.5em;
  }

  .button {
    font-size: 1.4em;
    line-height: 2em;
    margin-right: 0.75em;
  }

  /* Stack thumbnail above description on each publication */
  .list-item.publication {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .list-item.publication .thumbnail {
    flex: 0 0 auto;
    width: 100%;
    max-width: 280px;
  }

  .previews {
    height: auto;
    grid-auto-rows: auto;
  }

  #back-to-top {
    bottom: 1em;
    right: 1em;
  }
}