/* Shared site chrome: the header and footer every page shows. Flask pages load this file through
   base.html and the picks chrome; the React front end loads it too. Selectors start at
   header.pl2-header and footer.site-directory-footer so they win over research-theme.css. */

header.pl2-header {
  position: static;
  z-index: auto;
  display: block;
  width: 100%;
  min-height: 0;
  padding: 0;
  gap: 0;
  box-sizing: border-box;
  border-bottom: 1px solid #e5e7eb;
  background: #fff;
  backdrop-filter: none;
  color: #111827;
}

header.pl2-header [hidden] {
  display: none !important;
}

header.pl2-header a {
  text-decoration: none;
}

header.pl2-header button {
  font: inherit;
}

/* Top row: logo, the main links, then search, account and the menu button on the right. */
header.pl2-header .pl-top {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 14px 28px 8px;
}

header.pl2-header .pl-logo {
  color: #000;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  white-space: nowrap;
  cursor: pointer;
}

header.pl2-header .pl-logo:hover,
header.pl2-header .pl-logo:focus-visible {
  text-decoration: underline;
}

header.pl2-header .pl-primary {
  display: flex;
  align-items: center;
  gap: 26px;
  flex: 1;
  min-width: 0;
}

header.pl2-header .pl-primary > a,
header.pl2-header .pl-menu > button {
  padding: 0;
  border: 0;
  background: none;
  color: #111827;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
}

header.pl2-header .pl-menu {
  position: relative;
}

header.pl2-header .pl-menu-list {
  position: absolute;
  top: 28px;
  left: 0;
  z-index: 70;
  min-width: 240px;
  max-height: 70vh;
  overflow: auto;
  padding: 8px;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
}

header.pl2-header .pl-menu-list a {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  color: #000;
  font-size: 14px;
}

header.pl2-header .pl-menu-list a:hover {
  background: #f3f4f6;
}

header.pl2-header .pl-right {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-left: auto;
}

header.pl2-header .pl-search-form {
  margin: 0;
}

header.pl2-header .pl-search {
  width: 220px;
  height: 36px;
  padding: 0 14px;
  border: 0;
  border-radius: 999px;
  background: #f3f4f6;
  color: #000;
  font-size: 14px;
  outline: none;
}

header.pl2-header .pl2-account {
  position: relative;
  display: flex;
}

header.pl2-header .pl2-account-button {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 1px solid #e5e7eb;
  border-radius: 999px;
  background: #fff;
  color: #111827;
  cursor: pointer;
}

header.pl2-header .pl2-account-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: 70;
  min-width: 220px;
  padding: 8px;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
}

header.pl2-header .pl2-account-menu a,
header.pl2-header .pl2-account-menu .pl2-account-menu-action {
  display: block;
  width: 100%;
  padding: 9px 10px;
  border: 0;
  border-radius: 8px;
  background: none;
  color: #111827;
  font-size: 14px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}

header.pl2-header .pl2-account-menu a:hover,
header.pl2-header .pl2-account-menu .pl2-account-menu-action:hover {
  background: #f3f4f6;
}

header.pl2-header .pl2-account-portal-form {
  margin: 0;
}

header.pl2-header .pl-btn {
  padding: 9px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}

header.pl2-header .pl-btn.primary {
  background: #38bdf8;
  color: #082f49;
}

header.pl2-header .pl-btn.primary:hover {
  background: #0ea5e9;
}

header.pl2-header .pl-hamburger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
}

header.pl2-header .pl-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 0 auto;
  background: #111827;
}

/* Second row: quick links. */
header.pl2-header .pl-secondary {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  padding: 0 28px 12px;
}

header.pl2-header .pl-secondary a {
  color: #111827;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

header.pl2-header .pl-secondary a:hover {
  text-decoration: underline;
}

/* The all-links drawer, opened by the menu button. */
header.pl2-header .pl-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 100;
  width: min(380px, 92vw);
  overflow-y: auto;
  padding: 18px 22px 40px;
  background: #fff;
  border-left: 1px solid #e5e7eb;
  box-shadow: -12px 0 30px rgba(0, 0, 0, 0.08);
}

header.pl2-header .pl-drawer-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-size: 16px;
  font-weight: 800;
}

header.pl2-header .pl-drawer-head button {
  border: 0;
  background: none;
  font-size: 28px;
  cursor: pointer;
}

header.pl2-header .pl-drawer-title {
  margin: 18px 0 8px;
  color: #6b7280;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

header.pl2-header .pl-drawer a {
  display: block;
  padding: 7px 0;
  color: #111827;
  font-size: 15px;
}

/* Drawer sections are folders that open on tap. */
header.pl2-header .pl-drawer-folder {
  border-bottom: 1px solid #e5e7eb;
}

header.pl2-header .pl-drawer-folder summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  color: #111827;
  font-size: 16px;
  font-weight: 700;
  list-style: none;
  cursor: pointer;
}

header.pl2-header .pl-drawer-folder summary::-webkit-details-marker {
  display: none;
}

header.pl2-header .pl-drawer-folder summary::after {
  content: '';
  width: 8px;
  height: 8px;
  margin-right: 4px;
  border-right: 2px solid #6b7280;
  border-bottom: 2px solid #6b7280;
  transform: rotate(45deg);
  transition: transform 0.15s;
}

header.pl2-header .pl-drawer-folder[open] summary::after {
  transform: rotate(-135deg);
}

header.pl2-header .pl-drawer-folder a {
  padding-left: 12px;
}

header.pl2-header .pl-drawer-folder[open] {
  padding-bottom: 8px;
}

/* Footer: the Sign up blue with black text, links in four columns, then the legal line. */
footer.site-directory-footer {
  position: static;
  z-index: auto;
  margin-top: 48px;
  padding: 40px 40px 32px;
  background: #38bdf8;
  color: #000;
  border-top: 1px solid #0ea5e9;
  isolation: auto;
  content-visibility: visible;
  font-size: 14px;
}

footer.site-directory-footer .pl-footer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
}

footer.site-directory-footer h2,
footer.site-directory-footer h4 {
  margin: 0 0 12px;
  color: #000;
  font-family: inherit;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: none;
}

footer.site-directory-footer a {
  display: block;
  padding: 4px 0;
  color: #000;
  font-family: inherit;
  font-size: 14px;
  text-decoration: none;
}

footer.site-directory-footer a:hover {
  text-decoration: underline;
}

footer.site-directory-footer .pl-footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px 28px;
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid rgba(0, 0, 0, 0.18);
  color: #000;
  font-family: inherit;
  font-size: 13px;
  letter-spacing: 0;
  text-transform: none;
}

footer.site-directory-footer .pl-footer-bottom a {
  display: inline;
  padding: 0;
}

footer.site-directory-footer .pl-footer-social a {
  display: inline-block;
  min-height: 24px;
  padding: 4px 6px;
  margin-right: 8px;
}

/* Narrow screens: the main links wrap under the logo, and the footer columns stack. */
@media (max-width: 900px) {
  header.pl2-header .pl-top {
    flex-wrap: wrap;
    gap: 12px 16px;
    padding: 12px 16px 8px;
  }

  header.pl2-header .pl-primary {
    order: 3;
    flex: 1 0 100%;
    width: 100%;
    gap: 18px;
    overflow-x: auto;
  }

  header.pl2-header .pl-search {
    width: 160px;
  }

  header.pl2-header .pl-secondary {
    flex-wrap: nowrap;
    gap: 14px;
    padding: 0 16px 10px;
    overflow-x: auto;
  }

  header.pl2-header .pl-secondary a {
    flex: none;
    white-space: nowrap;
  }

  footer.site-directory-footer {
    padding: 32px 18px 24px;
  }

  footer.site-directory-footer .pl-footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  header.pl2-header .pl-search-form {
    display: none;
  }

  footer.site-directory-footer .pl-footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}