:root {
  --col-navy:   #003087;
  --col-yellow: #FCD116;
  --col-red:    #CE1126;
  --bg:         #F0F4F8;
  --surface:    #FFFFFF;
  --text:       #1E293B;
  --muted:      #64748B;
  --border:     #E2E8F0;
  --header-h:   64px;

  --disc-engineering: #2563EB;
  --disc-natural:     #16A34A;
  --disc-medical:     #DC2626;
  --disc-health:      #DC2626;
  --disc-social:      #9333EA;
  --disc-agri:        #D97706;
  --disc-humanities:  #0891B2;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── Header ─────────────────────────────────────────────── */
.site-header {
  background: var(--col-navy);
  height: var(--header-h);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 16px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
  z-index: 100;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}

.flag {
  display: flex;
  flex-direction: column;
  height: 36px;
  width: 10px;
  border-radius: 2px;
  overflow: hidden;
  flex-shrink: 0;
}
.flag span {
  flex: 1;
}
.flag .y { background: var(--col-yellow); flex: 2; }
.flag .b { background: var(--col-navy); border: 1px solid rgba(255,255,255,0.25); }
.flag .r { background: var(--col-red); }

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.logo-text strong {
  color: var(--col-yellow);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.logo-text span {
  color: rgba(255,255,255,0.85);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.tagline {
  color: rgba(255,255,255,0.6);
  font-size: 13px;
  margin-left: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.join-btn {
  background: var(--col-yellow);
  color: var(--col-navy);
  font-weight: 700;
  font-size: 13px;
  padding: 8px 16px;
  border-radius: 6px;
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 0.15s;
}
.join-btn:hover { opacity: 0.88; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-shrink: 0;
}
.site-nav a {
  color: rgba(255,255,255,0.8);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.15s;
}
.site-nav a:hover { color: #fff; }
.site-nav a.join-btn { color: var(--col-navy); }

/* ── App layout ──────────────────────────────────────────── */
.app-layout {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ── Sidebar ─────────────────────────────────────────────── */
.sidebar {
  width: 380px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border-right: 1px solid var(--border);
  overflow: hidden;
}

.filters-panel {
  padding: 14px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
}

.search-wrap {
  position: relative;
  margin-bottom: 10px;
}
.search-wrap svg {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  width: 16px; height: 16px;
  pointer-events: none;
}
#search-input {
  width: 100%;
  padding: 9px 10px 9px 34px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s;
}
#search-input:focus {
  border-color: var(--col-navy);
}

.filter-row {
  display: flex;
  gap: 8px;
}
.filter-row select {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  background: var(--bg);
  outline: none;
  cursor: pointer;
  color: var(--text);
  transition: border-color 0.15s;
}
.filter-row select:focus {
  border-color: var(--col-navy);
}

/* ── Location picker ──────────────────────────────────────── */
.loc-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  text-align: left;
  transition: border-color 0.15s;
}
.loc-btn:hover, .loc-btn[aria-expanded="true"] { border-color: var(--col-navy); }
.loc-btn svg:first-child { color: var(--muted); flex-shrink: 0; }
.loc-btn #loc-btn-label { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.loc-btn-chevron { color: var(--muted); flex-shrink: 0; transition: transform 0.15s; }
.loc-btn[aria-expanded="true"] .loc-btn-chevron { transform: rotate(180deg); }

.loc-panel {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.12);
  z-index: 200;
  overflow: hidden;
  max-height: 320px;
  overflow-y: auto;
}
.loc-all-btn {
  display: block;
  width: 100%;
  padding: 9px 14px;
  border: none;
  background: none;
  text-align: left;
  font-size: 13px;
  color: var(--text);
  cursor: pointer;
  border-bottom: 1px solid var(--border);
}
.loc-all-btn:hover { background: var(--bg); }

.loc-region-row {
  display: flex;
  align-items: center;
}
.loc-region-btn {
  flex: 1;
  padding: 8px 14px;
  border: none;
  background: none;
  text-align: left;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
}
.loc-region-btn:hover { background: var(--bg); color: var(--col-navy); }
.loc-expand-btn {
  padding: 8px 12px;
  border: none;
  border-left: 1px solid var(--border);
  background: none;
  color: #475569;
  cursor: pointer;
  display: flex;
  align-items: center;
  transition: color 0.12s, background 0.12s;
  align-self: stretch;
}
.loc-expand-btn svg { transition: transform 0.15s; }
.loc-expand-btn:hover { color: var(--col-navy); background: rgba(0,0,0,0.04); }
.loc-expand-btn.loc-expand-open svg { transform: rotate(180deg); }

.loc-countries { padding: 2px 0 6px 0; background: var(--bg); }
.loc-country-btn {
  display: block;
  width: 100%;
  padding: 6px 14px 6px 28px;
  border: none;
  background: none;
  text-align: left;
  font-size: 12.5px;
  color: var(--muted);
  cursor: pointer;
}
.loc-country-btn:hover { background: #E8EDF5; color: var(--col-navy); }

.loc-flat-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 14px;
  border: none;
  background: none;
  text-align: left;
  font-size: 13px;
  color: var(--text);
  cursor: pointer;
}
.loc-flat-btn:hover { background: var(--bg); color: var(--col-navy); }
.loc-flat-btn svg { color: var(--muted); }
.loc-flat-btn:hover svg { color: var(--col-navy); }

.results-bar {
  padding: 8px 14px;
  font-size: 12px;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  flex-shrink: 0;
}
.results-bar strong {
  color: var(--text);
}

.scientist-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}
.scientist-list::-webkit-scrollbar { width: 5px; }
.scientist-list::-webkit-scrollbar-track { background: transparent; }
.scientist-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }

/* ── Scientist Card ──────────────────────────────────────── */
.card {
  display: flex;
  gap: 12px;
  padding: 12px;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.12s, transform 0.12s;
  border: 1px solid transparent;
  margin-bottom: 4px;
}
.card:hover {
  background: var(--bg);
  border-color: var(--border);
}
.card.active {
  background: #EFF6FF;
  border-color: var(--col-navy);
}

.card-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid var(--border);
}

.card-body {
  flex: 1;
  min-width: 0;
}

.card-name {
  font-weight: 600;
  font-size: 14px;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-position {
  font-size: 12px;
  color: var(--muted);
  margin-top: 1px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-institution {
  font-size: 12px;
  color: var(--col-navy);
  font-weight: 500;
  margin-top: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
button.card-institution {
  display: block;
  background: none;
  border: none;
  padding: 0;
  text-align: left;
  width: 100%;
  cursor: pointer;
}
button.card-institution:hover {
  text-decoration: underline;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 5px;
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 99px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.badge-engineering { background: #DBEAFE; color: var(--disc-engineering); }
.badge-natural     { background: #DCFCE7; color: var(--disc-natural); }
.badge-medical     { background: #FEE2E2; color: var(--disc-medical); }
.badge-health      { background: #FEE2E2; color: var(--disc-health); }
.badge-social      { background: #F3E8FF; color: var(--disc-social); }
.badge-agri        { background: #FEF3C7; color: var(--disc-agri); }
.badge-humanities  { background: #CFFAFE; color: var(--disc-humanities); }

.card-location {
  font-size: 11px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 3px;
}
.card-location svg {
  width: 11px; height: 11px;
  flex-shrink: 0;
}

.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--muted);
}
.empty-state svg {
  width: 40px; height: 40px;
  margin-bottom: 12px;
  opacity: 0.4;
}
.empty-state p { font-size: 14px; }

/* ── Map ─────────────────────────────────────────────────── */
.map-wrapper {
  flex: 1;
  position: relative;
}

#map {
  width: 100%;
  height: 100%;
}

/* ── Leaflet tooltip (hover) ─────────────────────────────── */
.inst-tooltip {
  background: var(--text);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  white-space: nowrap;
}
.inst-tooltip::before { display: none; }

/* ── Institution popup (click) ───────────────────────────── */
.inst-popup {
  text-align: center;
  padding: 18px 20px 14px !important;
}
.inst-popup-count {
  font-size: 40px;
  font-weight: 800;
  color: var(--col-navy);
  line-height: 1;
}
.inst-popup-label {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}
.inst-popup-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 4px;
}
.inst-popup-location {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 12px;
}
.inst-popup-action {
  font-size: 12px;
  font-weight: 600;
  color: var(--col-navy);
  cursor: pointer;
}

/* Custom Leaflet popup */
.leaflet-popup-content-wrapper {
  border-radius: 12px;
  padding: 0;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}
.leaflet-popup-content {
  margin: 0;
  width: 260px !important;
}
.leaflet-popup-tip-container { display: none; }

.popup-inner {
  padding: 14px 16px;
}
.popup-header {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-bottom: 8px;
}
.popup-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid var(--border);
}
.popup-info { flex: 1; min-width: 0; }
.popup-name {
  font-weight: 700;
  font-size: 13px;
  line-height: 1.3;
  color: var(--text);
}
.popup-position {
  font-size: 11px;
  color: var(--muted);
  margin-top: 2px;
}
.popup-institution {
  font-size: 12px;
  color: var(--col-navy);
  font-weight: 600;
  margin-top: 2px;
}
.popup-research {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
  border-top: 1px solid var(--border);
  padding-top: 8px;
  margin-top: 4px;
}
.popup-links {
  display: flex;
  gap: 8px;
  margin-top: 10px;
  flex-wrap: wrap;
}
.popup-link {
  font-size: 11px;
  font-weight: 600;
  color: var(--col-navy);
  text-decoration: none;
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 3px 8px;
  border-radius: 5px;
  transition: background 0.12s;
}
.popup-link:hover {
  background: var(--border);
}

/* ── Sidebar tabs ────────────────────────────────────────── */
.sidebar-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
}
.sidebar-tab {
  flex: 1;
  padding: 10px 0;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
  letter-spacing: 0.02em;
}
.sidebar-tab:hover { color: var(--text); }
.sidebar-tab.active {
  color: var(--col-navy);
  border-bottom-color: var(--col-navy);
}

/* ── Institution sidebar card ────────────────────────────── */
.inst-card { cursor: pointer; }
.inst-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
}
.inst-card-count {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  background: #EFF6FF;
  border-radius: 8px;
  padding: 6px 10px;
  min-width: 44px;
}
.inst-card-count span {
  font-size: 20px;
  font-weight: 800;
  color: var(--col-navy);
  line-height: 1;
}
.inst-card-count small {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-top: 2px;
}
.inst-card-assoc {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.inst-card-assoc-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 6px;
}
.inst-card-assoc-link {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--col-navy);
  text-decoration: none;
  padding: 4px 0;
  transition: opacity 0.12s;
}
.inst-card-assoc-link:hover { opacity: 0.75; }
.inst-card-assoc-link svg {
  width: 12px; height: 12px; flex-shrink: 0;
}
.inst-card-cta {
  margin-top: 10px;
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  text-align: right;
}
.inst-card:hover .inst-card-cta { color: var(--col-navy); }

/* ── Institution popup list ──────────────────────────────── */
.inst-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 220px;
  overflow-y: auto;
}
.inst-row {
  padding: 6px 8px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.12s;
}
.inst-row:hover { background: var(--bg); }
.inst-row-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}
.inst-row-sub {
  font-size: 11px;
  color: var(--muted);
  margin-top: 2px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Lite card (no institution selected) */
.card-lite .card-body { justify-content: center; }
.card-lite .card-meta { margin-top: 4px; }

/* Extra affiliation row in lite cards */
.card-extra-inst {
  font-size: 11px;
  color: var(--muted);
  font-weight: 500;
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
  transition: color 0.12s;
}
.card-extra-inst:hover { color: var(--col-navy); }

/* City tag in lite cards */
.city-tag {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 11px;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 2px 7px;
  border-radius: 99px;
}

/* Research summary in full card */

/* Subfield tag (narrower discipline) */
.subfield-tag {
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 99px;
}

/* Topic tags in full card */
.card-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 6px;
}
.topic-tag {
  font-size: 11px;
  font-weight: 500;
  color: var(--col-navy);
  background: #EFF6FF;
  border: 1px solid #BFDBFE;
  padding: 2px 8px;
  border-radius: 99px;
}

/* Clickable filter tags */
.filter-tag {
  cursor: pointer;
  transition: opacity 0.12s, box-shadow 0.12s;
}
.filter-tag:hover {
  opacity: 0.78;
  box-shadow: 0 0 0 2px rgba(0,48,135,0.18);
}

/* Links row in full card */
.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

/* Collaboration icons row */
.collab-icons {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 5px;
}
.collab-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 2px 7px;
  border-radius: 99px;
  cursor: pointer;
  transition: color 0.12s, border-color 0.12s;
}
.collab-chip:hover { color: var(--col-navy); border-color: var(--col-navy); }

/* Spinner animation */
@keyframes spin { to { transform: rotate(360deg); } }

/* "ver todos" and "Borrar filtros" links in results bar */
#clear-inst,
#clear-all-filters {
  background: none;
  border: none;
  color: var(--col-navy);
  font-size: 11px;
  cursor: pointer;
  text-decoration: underline;
  padding: 0;
}
#clear-all-filters {
  opacity: 0.6;
}

/* Custom marker */
.marker-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid white;
  box-shadow: 0 2px 6px rgba(0,0,0,0.35);
}

/* Leaflet cluster overrides */
.marker-cluster-small  { background-color: rgba(0,48,135,0.25); }
.marker-cluster-small div  { background-color: rgba(0,48,135,0.6); color: #fff; }
.marker-cluster-medium { background-color: rgba(0,48,135,0.3); }
.marker-cluster-medium div { background-color: rgba(0,48,135,0.7); color: #fff; }
.marker-cluster-large  { background-color: rgba(0,48,135,0.35); }
.marker-cluster-large div  { background-color: rgba(0,48,135,0.8); color: #fff; }

/* ── Association card ────────────────────────────────────── */
.assoc-card { cursor: default; }
.assoc-cta {
  display: block;
  width: 100%;
  background: none;
  border: none;
  padding: 10px 0 2px;
  text-align: right;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  border-top: 1px solid var(--border);
  margin-top: 10px;
}
.assoc-cta:hover { color: var(--col-navy); }
.assoc-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 6px;
}
.assoc-card-name-wrap { flex: 1; min-width: 0; }
.assoc-inst {
  font-size: 11px;
  color: var(--col-navy);
  font-weight: 500;
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.assoc-scope {
  display: inline-block;
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  border-radius: 99px;
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 2px;
}
.scope-country     { background: #DBEAFE; color: #1D4ED8; }
.scope-city        { background: #D1FAE5; color: #065F46; }
.scope-institution { background: #F3E8FF; color: #7E22CE; }

.assoc-description {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.55;
  margin-top: 2px;
  margin-bottom: 8px;
}
.assoc-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.assoc-link {
  font-size: 11px;
  font-weight: 600;
  color: var(--col-navy);
  text-decoration: none;
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 3px 9px;
  border-radius: 5px;
  transition: background 0.12s;
}
.assoc-link:hover { background: var(--border); }

/* ── Site footer (content pages) ────────────────────────── */
.site-footer {
  background: var(--text);
  color: rgba(255,255,255,0.55);
  padding: 28px 24px;
  flex-shrink: 0;
}
.footer-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-brand .logo-text strong { color: var(--col-yellow); font-size: 14px; }
.footer-brand .logo-text span   { color: rgba(255,255,255,0.6); font-size: 11px; }
.footer-nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  align-items: center;
}
.footer-nav a {
  color: rgba(255,255,255,0.65);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.15s;
}
.footer-nav a:hover { color: #fff; }
.footer-nav a.footer-join {
  background: var(--col-yellow);
  color: var(--col-navy);
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 5px;
  font-size: 12px;
}
.footer-nav a.footer-join:hover { opacity: 0.9; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 14px;
  font-size: 11px;
  line-height: 1.6;
  color: rgba(255,255,255,0.4);
}

/* Copyright line inside map sidebar */
.sidebar-copyright {
  padding: 8px 14px;
  font-size: 10px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

/* ── Hamburger / mobile nav ──────────────────────────────── */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: rgba(255,255,255,0.85);
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
}
.nav-toggle svg { width: 22px; height: 22px; display: block; }
.nav-toggle:hover { color: #fff; }

.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 600;
  background: rgba(0,0,0,0.45);
}
.mobile-nav.open { display: block; }
.mobile-nav-panel {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: var(--surface);
  border-radius: 18px 18px 0 0;
  padding: 8px 0 24px;
  box-shadow: 0 -8px 32px rgba(0,0,0,0.18);
  max-height: 90vh;
  overflow-y: auto;
}
.mobile-nav-handle {
  width: 40px; height: 4px;
  background: var(--border);
  border-radius: 2px;
  margin: 0 auto 12px;
}
.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 24px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: background 0.12s;
}
.mobile-nav-link:last-child { border-bottom: none; }
.mobile-nav-link:hover { background: var(--bg); }
.mobile-nav-link.mobile-join {
  margin: 16px 16px 0;
  background: var(--col-navy);
  color: #fff;
  font-weight: 700;
  border-radius: 10px;
  border: none;
  justify-content: center;
}
.mobile-nav-link.mobile-join:hover { opacity: 0.88; }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 768px) {
  body { overflow: auto; }

  /* Header: auto height so join button and hamburger fit */
  .site-header {
    height: auto;
    min-height: var(--header-h);
    padding: 10px 14px;
    gap: 10px;
  }

  /* Show hamburger; hide nav links + secondary buttons, keep .nav-toggle */
  .nav-toggle { display: flex; }
  .site-nav > a,
  .site-nav > .help-btn { display: none; }

  /* Push nav (hamburger) to the right edge */
  .site-nav { margin-left: auto; }

  .tagline { display: none; }

  .app-layout {
    flex-direction: column;
    overflow: auto;
  }

  .sidebar {
    width: 100%;
    height: auto;
    overflow: visible;
  }

  .scientist-list {
    max-height: 60vh;
    overflow-y: auto;
  }

  .map-wrapper {
    height: 55vh;
    flex: none;
  }
}