/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Variables ── */
:root {
  --link: #494e52;
  --link-hover: #000;
  --accent: #6f777d;
  --text: #494e52;
  --light: #f2f3f3;
  --border: #ddd;
  --sidebar-bg: #f2f3f3;
  --nav-bg: #494e52;
  --nav-link: #fff;
  --nav-link-hover: #ddd;
  --white: #fff;
  --sidebar-w: 200px;
  --content-max: 960px;
}

/* ── Body ── */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Roboto", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  background: var(--white);
}

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

/* ── MASTHEAD / TOP NAV ── */
.masthead {
  background: var(--nav-bg);
  border-bottom: 1px solid #333;
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
}
.masthead__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  padding: 0 16px;
  height: 48px;
}
.masthead__title {
  font-size: 14px;
  font-weight: 700;
  color: var(--nav-link);
  margin-right: 20px;
  white-space: nowrap;
  flex-shrink: 0;
}
.masthead__title:hover { color: var(--nav-link-hover); text-decoration: none; }
.greedy-nav {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0;
}
.greedy-nav li a {
  display: block;
  padding: 0 12px;
  height: 48px;
  line-height: 48px;
  font-size: 13px;
  color: var(--nav-link);
  transition: background 0.15s;
}
.greedy-nav li a:hover,
.greedy-nav li a.active {
  background: rgba(255,255,255,0.15);
  text-decoration: none;
  color: #fff;
}

/* ── PAGE WRAPPER ── */
.page-wrapper {
  max-width: var(--content-max);
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  padding: 24px 16px 60px;
  gap: 40px;
}

/* ── SIDEBAR ── */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  position: sticky;
  top: 68px;
}
.sidebar__author-profile {
  text-align: center;
}
.sidebar__author-profile img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--border);
  display: block;
  margin: 0 auto 10px;
  background: var(--light);
}
.author__name {
  font-size: 15px;
  font-weight: 700;
  color: #333;
  margin-bottom: 2px;
}
.author__bio {
  font-size: 12.5px;
  color: var(--accent);
  line-height: 1.5;
  margin-bottom: 10px;
}
.author__urls-wrapper {
  text-align: left;
  margin-top: 10px;
}
.author__urls {
  list-style: none;
  font-size: 13px;
}
.author__urls li {
  padding: 4px 0;
  border-bottom: 1px solid var(--border);
  color: var(--accent);
  font-size: 12.5px;
}
.author__urls li:last-child { border-bottom: none; }
.author__urls li a { color: var(--link); }
.author__urls li a:hover { color: var(--link-hover); }

/* icon rows: text left, icon right */
li.sidebar-icon-row {
  display: flex !important;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}
li.sidebar-icon-row span,
li.sidebar-icon-row a { flex: 1; }
.crest-icon {
  height: 1.25em;
  width: auto;
  flex-shrink: 0;
  vertical-align: middle;
}
.sidebar-fa-icon {
  font-size: 1em;
  color: var(--accent);
  flex-shrink: 0;
}

/* ── MAIN CONTENT ── */
.page__content {
  flex: 1;
  min-width: 0;
  padding-top: 6px;
}
.page__title {
  font-size: 24px;
  font-weight: 700;
  color: #333;
  margin-bottom: 18px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.page__content h2 {
  font-size: 18px;
  font-weight: 700;
  color: #333;
  margin: 30px 0 10px;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--border);
}
.page__content h3 {
  font-size: 15px;
  font-weight: 700;
  color: #555;
  margin: 20px 0 6px;
}
.page__content p {
  margin-bottom: 12px;
  font-size: 15px;
}
.page__content ul {
  padding-left: 20px;
  margin-bottom: 12px;
}
.page__content ul li {
  margin-bottom: 6px;
  font-size: 15px;
}
.page__content em { color: #555; }

/* publication/talk entries */
.entry-list {
  list-style: none;
  padding: 0;
}
.entry-list li {
  padding: 8px 0;
  border-bottom: 1px solid #eee;
  font-size: 14.5px;
  line-height: 1.65;
}
.entry-list li:last-child { border-bottom: none; }
.entry-authors {
  display: block;
  color: #666;
  font-size: 13.5px;
}
.entry-venue {
  display: block;
  font-style: italic;
  color: #666;
  font-size: 13.5px;
}

.year-heading {
  font-size: 16px;
  font-weight: 700;
  color: #333;
  margin: 24px 0 4px;
  border-bottom: 1px solid #eee;
  padding-bottom: 4px;
}

/* profile image on about page */
.research-image {
  width: 100%;
  max-width: 540px;
  display: block;
  margin: 28px auto 0;
  border-radius: 4px;
  border: 1px solid var(--border);
}

/* ── FOOTER ── */
footer.page-footer {
  background: var(--nav-bg);
  color: #aaa;
  text-align: center;
  padding: 20px 16px;
  font-size: 12.5px;
  margin-top: 20px;
}
footer.page-footer a { color: #ccc; }

/* ── RESPONSIVE ── */
@media (max-width: 640px) {
  .page-wrapper { flex-direction: column; }
  .sidebar { position: static; width: 100%; }
  .sidebar__author-profile { display: flex; align-items: center; gap: 16px; text-align: left; }
  .sidebar__author-profile img { width: 70px; height: 70px; margin: 0; }
  .masthead__inner { flex-wrap: wrap; height: auto; padding: 10px 16px; }
  .greedy-nav { gap: 0; }
}