/* Site navigation and publication directory. */
.mast { z-index: 12; }
#site-navigation {
  display: flex;
  align-items: center;
  gap: clamp(4px, .8vw, 16px);
}
#site-navigation a, #site-navigation button, .nav-toggle {
  color: var(--ink);
  font: 600 14px/1.4 Arial, sans-serif;
  text-decoration: none;
}
.nav-item, .nav-toggle, .nav-home {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: transparent;
  white-space: nowrap;
}
.nav-item:hover, .nav-toggle:hover, .nav-home:hover {
  background: #eef1f4;
}
#site-navigation [aria-current],
#site-navigation .programme-toggle.is-current-group {
  color: var(--blue);
  background: #e8eef6;
}
#site-navigation .nav-item[aria-current],
#site-navigation .programme-toggle.is-current-group {
  text-decoration: underline;
  text-underline-offset: 5px;
}
.nav-documents, .nav-toggle {
  border-color: #aebbc8;
}
.programme-nav { position: relative; }
.nav-chevron {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin: -3px 1px 0 2px;
  border-right: 1.6px solid;
  border-bottom: 1.6px solid;
  transform: rotate(45deg);
}
.programme-toggle[aria-expanded="true"] .nav-chevron {
  margin-top: 3px;
  transform: rotate(225deg);
}
#programme-navigation {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  z-index: 1;
  min-width: 242px;
  margin: 0;
  padding: 7px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 5px;
  box-shadow: 0 10px 25px #20344b20;
  list-style: none;
}
#programme-navigation a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 12px;
  border-radius: 3px;
}
#programme-navigation a:hover { color: var(--blue); background: #eef1f4; }
.nav-toggle, #site-navigation .nav-home { display: none; }
.foot-directory {
  display: grid;
  grid-template-columns: minmax(210px, 1.5fr) repeat(2, minmax(170px, 1fr));
  gap: clamp(24px, 5vw, 74px);
  padding-block: clamp(30px, 4vw, 56px);
}
.foot-signature p {
  color: var(--muted);
  font: 14px/1.6 Arial, sans-serif;
  margin: 12px 0 0;
}
.foot-group { display: flex; align-items: flex-start; flex-direction: column; }
.foot-group h2 {
  margin: 0 0 8px;
  font: 600 15px/1.4 Arial, sans-serif;
  color: var(--ink);
}
.foot-group a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font: 14px/1.45 Arial, sans-serif;
  text-decoration: none;
  color: #435265;
}
.foot-group a:hover { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  #site-navigation {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    align-items: stretch;
    flex-direction: column;
    gap: 1px;
    max-height: calc(100vh - 68px);
    max-height: calc(100dvh - 68px);
    padding: 9px var(--gutter) 14px;
    overflow-y: auto;
    overscroll-behavior: contain;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 18px #20344b16;
  }
  #site-navigation.open { display: flex; }
  #site-navigation .nav-item, #site-navigation .nav-home {
    display: flex;
    width: 100%;
    justify-content: flex-start;
    padding-inline: 12px;
  }
  #site-navigation .programme-toggle { justify-content: space-between; }
  #programme-navigation {
    position: static;
    min-width: auto;
    margin: 3px 0 8px 13px;
    padding: 0 0 0 8px;
    border: 0;
    border-left: 2px solid #c9d4e1;
    border-radius: 0;
    box-shadow: none;
  }
  #site-navigation .nav-documents { border-color: transparent; }
}
@media (max-width: 670px) {
  .foot-directory { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
  .foot-signature { grid-column: 1 / -1; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
  .foot-group a { min-height: 42px; }
}
@media (max-width: 380px) {
  .foot-directory { grid-template-columns: minmax(0, 1fr); }
}