/* Compact section summaries with optional details. */
.education-section { display: block; }
.education-section:not(.folded-section) > .education-list { margin-top: 32px; }
section.folded-section {
  display: block;
  padding-top: 70px;
  padding-bottom: 70px;
  border-top: 1px solid var(--line);
}
.folded-section > .section-heading,
.folded-section > .certificates-heading {
  margin-bottom: 22px;
}
.folded-section > .education-heading {
  margin-bottom: 22px;
}
.folded-section > .education-heading > .section-intro {
  max-width: 39ch;
  margin: 0 0 3px;
  font-size: 14px;
  line-height: 1.75;
}
.section-intro-action {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 17px;
  width: min(100%, 390px);
  max-width: 100%;
  padding: 22px 22px 17px 24px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(145deg, var(--surface), var(--surface-alt));
  box-shadow: 0 20px 42px -38px #071b6380;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.section-intro-action::before {
  content: '';
  position: absolute;
  inset: 16px auto 16px 0;
  width: 2px;
  border-radius: 2px;
  background: var(--accent);
}
.section-intro-action .section-intro {
  max-width: none;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}
.section-intro-cue {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--accent);
  font: 700 10px/1.4 var(--font-site);
  letter-spacing: .13em;
  text-transform: uppercase;
  transition: color .25s ease, border-color .25s ease;
}
.section-intro-cue::before {
  content: '';
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  transform-origin: center;
  box-shadow: 0 0 0 3px var(--soft), 0 0 7px color-mix(in srgb, var(--accent) 26%, transparent);
  animation: intro-cue-glow 3.8s ease-in-out infinite;
}
.section-intro-cue::after {
  content: '';
  flex: 1;
  height: 1px;
  margin-left: 4px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: .45;
  transform: scaleX(.66);
  transform-origin: left;
  transition: transform .35s ease, opacity .35s ease;
}
@keyframes intro-cue-glow {
  0%, 100% { opacity: .68; transform: scale(.9); box-shadow: 0 0 0 3px var(--soft), 0 0 7px color-mix(in srgb, var(--accent) 26%, transparent); }
  50% { opacity: 1; transform: scale(1.18); box-shadow: 0 0 0 5px var(--soft), 0 0 14px color-mix(in srgb, var(--accent) 42%, transparent); }
}
.section-intro-action:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: 0 22px 45px -34px #071b6380;
}
.section-intro-action:hover .section-intro-cue::after,
.section-intro-action:focus-visible .section-intro-cue::after { transform: scaleX(1); opacity: .9; }
.section-intro-action[aria-expanded="true"] { border-color: var(--accent); }
.section-intro-action:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.folded-section > .section-details[hidden] {
  display: none !important;
}
.section-disclosure {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  min-height: 48px;
  padding: 11px 15px 11px 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--navy);
  background: var(--surface);
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.4;
  cursor: pointer;
  box-shadow: 0 12px 26px -24px #071b6380;
  transition: border-color .2s ease, background-color .2s ease, transform .2s ease;
}
.section-disclosure:hover {
  border-color: var(--accent);
  background: var(--surface-alt);
  transform: translateY(-2px);
}
.section-disclosure:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.section-details {
  min-width: 0;
  margin-top: 28px;
  animation: section-reveal .28s ease both;
}
@keyframes section-reveal {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (max-width: 700px) {
  section.folded-section { padding-top: 54px; padding-bottom: 54px; }
  .folded-section > .section-heading,
  .folded-section > .certificates-heading,
  .folded-section > .education-heading { margin-bottom: 18px; }
  .folded-section > .education-heading > .section-intro {
    max-width: 100%;
    margin: 18px 0 0;
    font-size: 13.5px;
  }
  .section-intro-action { width: 100%; margin-top: 18px; }
  .section-intro-action .section-intro { font-size: 13.5px; }
  .section-details { margin-top: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  .section-disclosure,
  .section-intro-action,
  .section-intro-cue,
  .section-intro-cue::after { transition: none; }
  .section-disclosure:hover { transform: none; }
  .section-intro-action:hover { transform: none; }
  .section-intro-cue::before { animation: none; }
  .section-details { animation: none; }
}
@media print {
  .section-disclosure { display: none; }
  .section-intro-action { border: 0; box-shadow: none; padding: 0; background: none; }
  .section-intro-action::before,
  .section-intro-cue { display: none; }
  .folded-section > .section-details[hidden] { display: block !important; }
}

/* A fixed state marker and a separate traveling glint keep the disclosure state clear. */
.section-intro-action {
  --cue-anchor: 0%;
  --cue-travel-color: transparent;
  --cue-rail-color: color-mix(in srgb, var(--accent) 32%, transparent);
}
.section-intro-action[aria-expanded="true"] { --cue-anchor: 100%; --cue-travel-color: var(--accent); }
.section-intro-action .section-intro-cue::after {
  flex: 1 1 30px;
  min-width: 24px;
  height: 6px;
  border-radius: 3px;
  background-image:
    radial-gradient(circle, var(--accent) 0 1.3px, transparent 2.8px),
    linear-gradient(90deg, transparent, var(--cue-travel-color), transparent),
    linear-gradient(var(--cue-rail-color), var(--cue-rail-color));
  background-size: 6px 6px, 26px 2px, 100% 1px;
  background-repeat: no-repeat;
  background-position: var(--cue-anchor) 50%, -28px 50%, 0 50%;
  transform: none;
  opacity: .85;
  filter: drop-shadow(0 0 2px color-mix(in srgb, var(--accent) 35%, transparent));
  transition: background-position .35s ease, opacity .22s ease;
}
.section-intro-action[aria-expanded="true"] .section-intro-cue::after {
  animation: section-cue-return 1.6s ease-in-out both;
}
.section-intro-action:focus-visible { --cue-travel-color: var(--accent); }
.section-intro-action:focus-visible .section-intro-cue::after {
  animation: section-cue-return 1.8s ease-in-out infinite;
}
@media (hover: hover) {
  .section-intro-action:hover { --cue-travel-color: var(--accent); }
  .section-intro-action:hover .section-intro-cue::after {
    transform: none;
    opacity: 1;
    animation: section-cue-return 1.8s ease-in-out infinite;
  }
}
@keyframes section-cue-return {
  0%, 100% { background-position: var(--cue-anchor) 50%, -28px 50%, 0 50%; }
  50% { background-position: var(--cue-anchor) 50%, calc(100% + 28px) 50%, 0 50%; }
}
@media (prefers-reduced-motion: reduce) {
  .section-intro-action .section-intro-cue::after {
    animation: none !important;
    transition: none;
  }
}