/* Grid, intro and list layout adapted from Andy Zeng's website (https://andyzeng.github.io/).
   Top nav bar and dark mode adapted from Letian Wang's site (https://letian-wang.github.io/).
   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;
}
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;
}

/**************************************************/
/* Design tokens + dark mode. */

:root {
  --bg: #ffffff;
  --bg-alt: #f6f6f8;
  --text: #150c21;
  --muted: #8a8f98;
  --link: #146ebe;
  --link-hover: #0d5aa0;
  --border: #e6e6ea;
  --highlight: #c0392b;
}

html.dark {
  --bg: #15161b;
  --bg-alt: #1c1d24;
  --text: #e7e5ef;
  --muted: #8f93a1;
  --link: #6fb3f4;
  --link-hover: #9ccdf7;
  --border: #2c2d36;
  --highlight: #ff7a6b;
}

html { background: var(--bg); }

body, .site-nav, a {
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

/**************************************************/
/* Top nav bar. */

.site-nav {
  width: 100%;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-nav-inner {
  max-width: 54em;
  margin: 0 auto;
  padding: 0.9em 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: 'Asap', roboto, sans-serif;
}

.site-brand {
  color: var(--text) !important;
  font-weight: 600;
  font-size: 1.05em;
  border: none !important;
}

.site-brand:hover { color: var(--link) !important; }

.site-nav-links {
  display: flex;
  align-items: center;
  gap: 1.6em;
}

.nav-link {
  color: var(--muted);
  font-size: 0.95em;
  font-weight: 500;
  border: none !important;
}

.nav-link:hover { color: var(--text) !important; }

.nav-right {
  display: flex;
  align-items: center;
  gap: 1em;
}

.theme-toggle {
  border: 1px solid var(--border);
  background: var(--bg-alt);
  color: var(--text);
  border-radius: 6px;
  width: 2.1em;
  height: 2.1em;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.95em;
  line-height: 1;
  padding: 0;
}

.theme-toggle:hover { border-color: var(--muted); }

html.dark .theme-icon-sun { display: none; }
html:not(.dark) .theme-icon-moon { display: none; }

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

#body {
  font-family: 'Asap', roboto, sans-serif;
  font-size: 1em;
  line-height: 1.5em;
  background: var(--bg);
  color: var(--text);
}

#main {
  width: 54em;
  margin: 0px auto;
  position: relative;
  min-height: calc(100vh - 4em);
}

a {
  text-decoration: none;
  color: var(--link);
}

a:hover {
  text-decoration: none;
  border-bottom: 1px solid var(--link);
}

i {
  font-style: italic;
}

b {
  font-weight: 700;
}

h1 {
  font-size: 2.4em;
  line-height: 2.4em;
  font-weight: 500;
}

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

#intro {
  padding-top: 4em;
  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: 1em;
}

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

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

.button {
  display: inline-block;
  cursor: pointer;
  border: none;
  background: none;
  color: var(--muted);
  font-family: inherit;
  font-size: 1.6em;
  line-height: 2.4em;
  margin-top: 0.5em;
  margin-right: 1em;
  float: left;
  padding: 0;
}

.button:hover {
  color: var(--text);
}

.button:active,
.button.is-checked {
  color: var(--text);
}

.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;
}

/* Contain the floated thumbnail + description so Isotope measures
   each row's height correctly. */
.list-item:after {
  content: '';
  display: block;
  clear: both;
}

.list-item p.date {
  display: inline-block;
  width: 3em;
  color: var(--muted);
}

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

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

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

.thumbnail img,
.thumbnail video {
  margin-top: 0.4em;
  border-radius: 5px;
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.venue {
  color: var(--highlight);
  font-weight: 700;
  font-style: italic;
}

.hl {
  color: var(--highlight);
  font-weight: 700;
}

h3 {
  font-size: 1em;
  line-height: 1.5em;
}

h3 a {
  color: var(--text);
}

h3 a:hover {
  color: var(--link);
}

.publication {
  margin-bottom: 0.5em;
}

.publication p {
  font-size: 1em;
  line-height: 1.5em;
  color: var(--muted);
}

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

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

#footer {
  color: var(--muted);
  position: absolute;
  bottom: 0;
  line-height: 2.5em;
}

/**************************************************/
/* Narrow screens: keep the same look, just let it fit. */

@media (max-width: 56em) {
  #main {
    width: auto;
    padding: 0 1.5em;
  }

  #intro {
    padding-top: 2.5em;
    flex-direction: column-reverse;
    align-items: flex-start;
  }

  #intro-text {
    width: 100%;
  }

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

  .site-nav-inner {
    padding: 0.9em 1.5em;
  }
}

@media (max-width: 700px) {
  .site-nav-inner { padding: 0.8em 1.2em; }
  .site-nav-links { gap: 1em; }
}

/**************************************************/
/* Experience timeline (adapted from Letian Wang's site). */

.experience {
  position: relative;
}

.experience:after {
  content: '';
  position: absolute;
  width: 2px;
  background-color: var(--border);
  top: 0;
  bottom: 0;
  left: 24px;
  margin: 34px 0;
  z-index: 0;
}

.exp-row {
  padding: 10px 0;
  position: relative;
  display: flex;
  align-items: center;
}

.exp-row img {
  width: 50px;
  height: 50px;
  border-radius: 8px;
  flex: none;
  object-fit: contain;
  /* Sit on top of the timeline rule so each logo reads as a node on it. */
  position: relative;
  z-index: 2;
  background: var(--bg);
}

.exp-content {
  padding: 0 0 0 1.5em;
}

.exp-date {
  color: var(--muted);
  font-size: 0.9em;
  line-height: 1.5em;
}

.p-exp {
  line-height: 1.5em;
}

/**************************************************/
/* Wide, uncropped thumbnail for a poster. */

.list-item.poster .thumbnail {
  width: 42%;
  margin-right: 3%;
}

.list-item.poster .thumbnail img {
  aspect-ratio: auto;
  object-fit: contain;
}

.list-item.poster .project-description {
  width: 55%;
}

@media (max-width: 56em) {
  .list-item.poster .thumbnail,
  .list-item.poster .project-description {
    width: 100%;
    float: none;
    margin-right: 0;
  }
}