/* Motion adds rhythm without changing the established page layouts. */
:root { --ease-out: cubic-bezier(.22, 1, .36, 1); }
.view { animation: none; }
.reveal-pending { opacity: 0; translate: 0 18px; pointer-events: none; }

/* Six members in two rows, with shared baselines within each row. */
.current-people { --member-photo-size: clamp(128px, 15vw, 160px); grid-template-columns: repeat(6, minmax(0, 1fr)); grid-auto-rows: 1fr; align-items: stretch; row-gap: 56px; }
.current-people::before { display: none; }
.member-card { grid-column: span 2; min-width: 0; height: 100%; padding-bottom: 0; }
.member-photo { flex: none; width: var(--member-photo-size); max-width: 100%; height: auto; min-height: 0; aspect-ratio: 1; }
.member-photo::after { top: 36%; }
.member-card h3 { line-height: 1.5; }
.member-card .name-en { min-height: 1.6em; }
.member-card .member-role { min-height: 1.75em; }
.member-details { flex: 1; min-height: 3.6em; width: 100%; }
.member-card .member-detail { font-size: 13px; line-height: 1.75; overflow-wrap: anywhere; }
.member-card .member-link {
  width: 100%; margin-top: auto; padding: 24px 0 14px;
  justify-content: space-between; border-bottom: 1px solid var(--line);
}
.portrait-crop { display: block; width: 100%; height: 100%; overflow: hidden; border-radius: 50%; }
.portrait-crop img { display: block; }
.portrait-cheon img { transform: scale(1.45); transform-origin: 50% 30%; }
.dialog-portrait { display: block; }
.dialog-portrait .portrait-crop img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 35%; }

/* Shared hover language: fine lines, small directional movement, soft tint. */
nav a::after, nav a.active::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 3px;
  width: 100%; height: 1px; border-radius: 0; background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform 380ms var(--ease-out);
}
nav a.active::after { transform: scaleX(1); }
.member-photo, .faculty-photo-wrap { translate: var(--hover-x, 0px) var(--hover-y, 0px); transition: border-color 350ms, transform 550ms var(--ease-out), translate 350ms var(--ease-out), box-shadow 550ms var(--ease-out); }
.member-photo img, .faculty-photo-wrap img { transition: filter 550ms var(--ease-out), scale 650ms var(--ease-out), opacity 550ms var(--ease-out); }
.faculty-photo-wrap img { display: block; }
.member-link, .member-link > span, .row-arrow, .load-more > span {
  transition: color 250ms, transform 450ms var(--ease-out), border-color 350ms;
}
.paper-row, .alumni-row { isolation: isolate; }
.paper-row::before, .alumni-row::before {
  content: ''; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: linear-gradient(90deg, var(--soft), transparent 90%);
  opacity: 0; transition: opacity 400ms var(--ease-out);
}
.paper-row > div, .alumni-row > div { transition: transform 450ms var(--ease-out); }
.topic-circle { translate: var(--hover-x, 0px) var(--hover-y, 0px); transition: translate 350ms var(--ease-out), transform 550ms var(--ease-out), border-color 300ms, box-shadow 450ms var(--ease-out); }
.topic-circle .count { transition: transform 550ms var(--ease-out); }
.arrow-circle { translate: var(--hover-x, 0px) var(--hover-y, 0px); transition: translate 350ms var(--ease-out), transform 450ms var(--ease-out), background 300ms, color 300ms, border-color 300ms; }
.map-controls button, .motion-control, .close-dialog, .detail-links a, .detail-links button,
.segmented button, .year-rail button, .quiet-button, .load-more, .area-pill {
  transition: background 250ms, color 250ms, border-color 250ms, transform 400ms var(--ease-out), box-shadow 400ms var(--ease-out);
}
.search-field { transition: border-color 250ms, box-shadow 250ms; }
.search-field:focus-within { border-color: var(--accent); box-shadow: 0 1px 0 var(--accent); }
.related-paper, .research-topic-list button { transition: color 250ms, background 250ms, padding 400ms var(--ease-out); }
#view-about .node-ring, #view-about .node-core, #view-about .paper-dot {
  transition: fill 250ms, stroke 250ms, stroke-width 300ms, r 400ms var(--ease-out);
}
#view-about .map-paper-preview { animation: tooltip-in 240ms var(--ease-out); }
@keyframes tooltip-in { from { opacity: 0; translate: 0 5px; } to { opacity: 1; translate: 0 0; } }
dialog[open] { animation: slideIn 420ms var(--ease-out); }

@media (hover: hover) and (pointer: fine) {
  nav a:hover::after { transform: scaleX(1); }
  .member-card:hover .member-photo, .faculty-profile:hover .faculty-photo-wrap { transform: translateY(-4px); border-color: var(--accent); box-shadow: 0 9px 20px #203a4309; }
  .member-card:hover .member-photo img, .faculty-profile:hover .faculty-photo-wrap img { filter: grayscale(0); scale: 1.035; opacity: 1; }
  .member-card:hover .member-link { color: var(--accent); border-color: var(--accent); }
  .member-card:hover .member-link > span { transform: translate(3px, -3px); }
  .paper-row:hover { background: none; }
  .paper-row:hover::before, .alumni-row:hover::before { opacity: .65; }
  .paper-row:hover > div, .alumni-row:hover > div { transform: translateX(5px); }
  .paper-row:hover .row-arrow, .alumni-row:hover .row-arrow { transform: translate(3px, -3px); }
  .topic-orbit:hover .topic-circle { transform: translateY(-4px); border-color: var(--area-color); box-shadow: 0 0 0 5px #d9e2db55; }
  .topic-orbit:hover .count { transform: translateY(-1px); }
  .round-link:hover .arrow-circle { transform: translate(2px, -2px); background: var(--ink); color: var(--bg); border-color: var(--ink); }
  .map-controls button:hover, .motion-control:hover, .close-dialog:hover { transform: translateY(-2px); background: var(--soft); }
  .detail-links a:hover, .detail-links button:hover, .area-pill:hover { transform: translateY(-2px); box-shadow: 0 4px 12px #203a4309; }
  .segmented button:hover { background: var(--paper); }
  .year-rail button:hover { transform: translateX(3px); color: var(--ink); }
  .quiet-button:hover { color: var(--accent); transform: translateY(-1px); }
  .load-more:hover { border-color: var(--accent); }
  .load-more:hover > span { transform: translateY(3px); }
  .related-paper:hover, .research-topic-list button:hover { color: var(--accent); padding-left: 5px; background: #d9e2db33; }
  #view-about .area-node:hover .node-core { r: 7px; }
  #view-about .topic-node:hover .node-core { r: 3px; }
}
.portrait-cheon img,
.member-card:hover .portrait-cheon img { filter: grayscale(1) contrast(1.4) brightness(.93); }
.member-card:focus-visible .member-link { color: var(--accent); border-color: var(--accent); }
.member-card:focus-visible .member-photo { border-color: var(--accent); }
.faculty-profile:focus-within .faculty-photo-wrap { border-color: var(--accent); }
.paper-row:focus-visible::before, .alumni-row:focus-visible::before { opacity: .65; }
button:active .row-arrow, .member-card:active .member-link > span { transform: translate(1px, -1px); }

@media (max-width: 760px) {
  .current-people { --member-photo-size: 128px; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 34px 12px; }
  .current-people .member-card { grid-column: span 2; grid-row: auto; }
  .member-card .name-en { min-height: 3.2em; }
  .member-card .member-link { padding-top: 18px; }
  .member-card .member-detail { font-size: 12px; }
}
.motion-paused *, .motion-paused *::before, .motion-paused *::after { animation: none !important; transition: none !important; }
@media (prefers-reduced-motion: reduce) {
  .reveal-pending { opacity: 1; translate: none; pointer-events: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}