/* ==========================================================================
   Ekoya — Components: header, footer, buttons, cards, chips, badges, forms,
   drawers, map panels, empty/error states.
   ========================================================================== */

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ek-2);
  font-family: var(--ek-font-sans);
  font-size: var(--ek-fs-300);
  font-weight: 600;
  line-height: 1;
  padding: 0.85rem 1.35rem;
  border-radius: var(--ek-r-pill);
  border: 1.5px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--ek-dur) var(--ek-ease), color var(--ek-dur) var(--ek-ease),
              border-color var(--ek-dur) var(--ek-ease), transform var(--ek-dur-fast) var(--ek-ease),
              box-shadow var(--ek-dur) var(--ek-ease);
  min-height: 44px;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { .btn:hover { transform: none; } }

.btn--primary { background: var(--ek-evergreen); color: #fff; }
.btn--primary:hover { background: var(--ek-evergreen-700); color: #fff; box-shadow: var(--ek-shadow-md); }

.btn--clay { background: var(--ek-clay); color: #fff; }
.btn--clay:hover { background: var(--ek-clay-600); color: #fff; box-shadow: var(--ek-shadow-md); }

.btn--secondary { background: transparent; color: var(--ek-evergreen); border-color: var(--ek-line-2); }
.btn--secondary:hover { background: var(--ek-surface); border-color: var(--ek-evergreen); color: var(--ek-evergreen); }

.btn--ghost { background: transparent; color: var(--ek-evergreen-700); padding-inline: 0.5rem; border-radius: var(--ek-r-sm); }
.btn--ghost:hover { color: var(--ek-clay-600); }

.section--dark .btn--secondary { color: #fff; border-color: rgba(255,255,255,0.4); }
.section--dark .btn--secondary:hover { background: rgba(255,255,255,0.08); border-color: #fff; color: #fff; }

.btn--sm { padding: 0.55rem 0.95rem; font-size: var(--ek-fs-200); min-height: 38px; }
.btn--block { width: 100%; }
.btn[aria-disabled="true"], .btn:disabled { opacity: 0.5; cursor: not-allowed; pointer-events: none; }

.btn .arrow { transition: transform var(--ek-dur) var(--ek-ease); }
.btn:hover .arrow { transform: translateX(3px); }
@media (prefers-reduced-motion: reduce) { .btn:hover .arrow { transform: none; } }

.link-arrow {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-weight: 600; font-size: var(--ek-fs-300); text-decoration: none;
  color: var(--ek-evergreen-700);
}
.link-arrow:hover { color: var(--ek-clay-600); }
.link-arrow svg { transition: transform var(--ek-dur) var(--ek-ease); }
.link-arrow:hover svg { transform: translateX(3px); }
@media (prefers-reduced-motion: reduce) { .link-arrow:hover svg { transform: none; } }

.btn-row { display: flex; flex-wrap: wrap; gap: var(--ek-3); }

/* ---------- Site header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--ek-bg) 88%, transparent);
  backdrop-filter: saturate(1.2) blur(8px);
  -webkit-backdrop-filter: saturate(1.2) blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--ek-dur) var(--ek-ease), background var(--ek-dur) var(--ek-ease);
}
.site-header.is-scrolled { border-bottom-color: var(--ek-line); background: color-mix(in srgb, var(--ek-bg) 96%, transparent); }
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--ek-4); height: var(--ek-header-h);
  max-width: var(--ek-maxw-wide); margin-inline: auto; padding-inline: var(--ek-gutter);
}
.brand { display: inline-flex; align-items: center; text-decoration: none; flex-shrink: 0; }
.brand__logo { width: 165px; height: auto; display: block; }
.brand__logo--light { display: none; }
@media (max-width: 640px) { .brand__logo { width: 128px; } }
/* Dark header/footer contexts use the light knockout logo */
.site-header--dark .brand__logo--dark,
.footer .brand__logo--dark { display: none; }
.site-header--dark .brand__logo--light,
.footer .brand__logo--light { display: block; }

.nav { display: flex; align-items: center; gap: var(--ek-2); }
.nav__list { display: flex; align-items: center; gap: 0.15rem; list-style: none; margin: 0; padding: 0; }
.nav__link {
  display: inline-flex; align-items: center; padding: 0.5rem 0.7rem;
  font-size: var(--ek-fs-300); font-weight: 550; color: var(--ek-ink-2);
  text-decoration: none; border-radius: var(--ek-r-sm);
  transition: color var(--ek-dur) var(--ek-ease), background var(--ek-dur) var(--ek-ease);
}
.nav__link:hover { color: var(--ek-evergreen); background: var(--ek-bg-2); }
.nav__link[aria-current="page"] { color: var(--ek-evergreen-900); font-weight: 650; }
.nav__link[aria-current="page"]::after {
  content: ""; display: block;
}
.nav__cta { margin-left: var(--ek-3); }

/* Mobile nav toggle */
.nav-toggle {
  display: none; width: 44px; height: 44px; border: 1px solid var(--ek-line-2);
  border-radius: var(--ek-r-sm); background: var(--ek-surface); cursor: pointer;
  align-items: center; justify-content: center; flex-shrink: 0;
}
.nav-toggle:hover { border-color: var(--ek-evergreen); }
.nav-toggle .bar { display: block; width: 20px; height: 2px; background: var(--ek-evergreen-900); border-radius: 2px; transition: transform var(--ek-dur) var(--ek-ease), opacity var(--ek-dur) var(--ek-ease); }
.nav-toggle .bar + .bar { margin-top: 5px; }
.nav-toggle[aria-expanded="true"] .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 940px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    position: fixed; inset: var(--ek-header-h) 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--ek-surface); border-bottom: 1px solid var(--ek-line);
    box-shadow: var(--ek-shadow-lg);
    padding: var(--ek-4) var(--ek-gutter) var(--ek-6);
    transform: translateY(-12px); opacity: 0; pointer-events: none visibility hidden;
    visibility: hidden;
    transition: transform var(--ek-dur) var(--ek-ease), opacity var(--ek-dur) var(--ek-ease), visibility var(--ek-dur);
    max-height: calc(100vh - var(--ek-header-h)); overflow-y: auto;
  }
  .nav.is-open { transform: none; opacity: 1; pointer-events: auto; visibility: visible; }
  .nav__list { flex-direction: column; align-items: stretch; gap: 0; width: 100%; }
  .nav__link { padding: 0.95rem 0.6rem; font-size: 1.05rem; border-radius: var(--ek-r-sm); border-bottom: 1px solid var(--ek-line); }
  .nav__link[aria-current="page"] { background: var(--ek-bg-2); }
  .nav__cta { margin: var(--ek-4) 0 0; }
  .nav__cta .btn { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  .nav { transition: none; }
}

/* ---------- Footer ---------- */
.footer { background: var(--ek-evergreen-900); color: var(--ek-on-dark-2); padding-block: var(--ek-8) var(--ek-6); }
.footer a { color: var(--ek-on-dark); text-decoration: none; }
.footer a:hover { color: #fff; text-decoration: underline; }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: var(--ek-6); }
@media (max-width: 900px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer__grid { grid-template-columns: 1fr; gap: var(--ek-5); } }
.footer__brand-name { font-family: var(--ek-font-serif); font-size: 1.4rem; color: #fff; margin-bottom: var(--ek-2); }
.footer__tagline { color: var(--ek-clay-200); font-style: italic; margin-bottom: var(--ek-4); }
.footer h4 { color: #fff; font-family: var(--ek-font-sans); font-size: var(--ek-fs-200); letter-spacing: var(--ek-ls-caps); text-transform: uppercase; margin-bottom: var(--ek-4); }
.footer__list { list-style: none; margin: 0; padding: 0; }
.footer__list li { margin-bottom: var(--ek-3); }
.footer__bottom { display: flex; flex-wrap: wrap; gap: var(--ek-3) var(--ek-5); justify-content: space-between; align-items: center; margin-top: var(--ek-8); padding-top: var(--ek-5); border-top: 1px solid rgba(255,255,255,0.14); font-size: var(--ek-fs-200); color: var(--ek-on-dark-2); }
.footer__legal { display: flex; gap: var(--ek-4); flex-wrap: wrap; }

/* ---------- Cards ---------- */
.card {
  background: var(--ek-surface); border: 1px solid var(--ek-line);
  border-radius: var(--ek-r-md); overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform var(--ek-dur) var(--ek-ease), box-shadow var(--ek-dur) var(--ek-ease), border-color var(--ek-dur) var(--ek-ease);
}
.card:hover { box-shadow: var(--ek-shadow-md); border-color: var(--ek-line-2); }
.card__media { position: relative; aspect-ratio: var(--ek-ar-card); background: var(--ek-bg-3); overflow: hidden; }
.card__media img, .card__media svg { width: 100%; height: 100%; object-fit: cover; }
.card__body { padding: var(--ek-5); display: flex; flex-direction: column; gap: var(--ek-3); flex: 1; }
.card__title { font-size: var(--ek-fs-600); margin: 0; }
.card__meta { font-size: var(--ek-fs-200); color: var(--ek-ink-3); letter-spacing: 0.02em; }
.card__foot { margin-top: auto; padding-top: var(--ek-2); }

.card-link { text-decoration: none; color: inherit; }
.card-link:hover .card__title { color: var(--ek-clay-600); }

/* ---------- Chips (filters / themes) ---------- */
.chip {
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-size: var(--ek-fs-200); font-weight: 550; line-height: 1;
  padding: 0.4rem 0.7rem; border-radius: var(--ek-r-pill);
  background: var(--ek-bg-2); color: var(--ek-ink-2); border: 1px solid var(--ek-line);
  white-space: nowrap;
}
.chip--theme { background: var(--ek-moss-200); color: var(--ek-moss-700); border-color: transparent; }
.chip--water { background: var(--ek-water-200); color: var(--ek-water-700); border-color: transparent; }
.chip-row { display: flex; flex-wrap: wrap; gap: 0.4rem; }

/* Interactive filter chip (button) */
.filter-chip {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-size: var(--ek-fs-300); font-weight: 550;
  padding: 0.5rem 0.85rem; border-radius: var(--ek-r-pill);
  background: var(--ek-surface); color: var(--ek-ink-2);
  border: 1.5px solid var(--ek-line-2); cursor: pointer;
  transition: all var(--ek-dur-fast) var(--ek-ease); min-height: 40px;
}
.filter-chip:hover { border-color: var(--ek-evergreen); color: var(--ek-evergreen); }
.filter-chip[aria-pressed="true"] { background: var(--ek-evergreen); color: #fff; border-color: var(--ek-evergreen); }
.filter-chip[aria-pressed="true"] .filter-chip__check { opacity: 1; }
.filter-chip__check { opacity: 0; width: 12px; }

/* ---------- Badges (relationship, status) ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-size: var(--ek-fs-200); font-weight: 650; letter-spacing: 0.02em;
  padding: 0.32rem 0.66rem; border-radius: var(--ek-r-sm);
  line-height: 1.1; text-transform: none;
}
.badge svg { width: 13px; height: 13px; flex-shrink: 0; }
/* Relationship colour families — each also carries an icon + text, never colour alone */
.badge--ekoya        { background: var(--ek-evergreen); color: #fff; }
.badge--founder      { background: var(--ek-moss-200); color: var(--ek-moss-700); }
.badge--collab       { background: var(--ek-clay-200); color: var(--ek-clay-700); }
.badge--federal      { background: var(--ek-water-200); color: var(--ek-water-700); }
.badge--research     { background: #E6E1F0; color: #4A3B78; }
.badge--ongoing      { background: var(--ek-bg-3); color: var(--ek-ink-2); }

.status-tag {
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-size: var(--ek-fs-200); font-weight: 600; padding: 0.28rem 0.6rem;
  border-radius: var(--ek-r-sm); line-height: 1.1;
}
.status-tag svg { width: 12px; height: 12px; }
.status-tag--public { background: var(--ek-status-bg-public); color: var(--ek-status-public); }
.status-tag--restricted { background: var(--ek-status-bg-restricted); color: var(--ek-status-restricted); }
.status-tag--ongoing { background: var(--ek-status-bg-ongoing); color: var(--ek-status-ongoing); }

/* ---------- Forms ---------- */
.fieldset { border: 0; padding: 0; margin: 0 0 var(--ek-4); }
.fieldset > legend { font-family: var(--ek-font-serif); font-size: var(--ek-fs-500); font-weight: 560; color: var(--ek-evergreen-900); margin-bottom: var(--ek-4); padding: 0; }
.field { margin-bottom: var(--ek-5); }
.field > label, .fieldset > legend { display: block; font-weight: 600; font-size: var(--ek-fs-300); color: var(--ek-ink); margin-bottom: var(--ek-2); }
.field .req { color: var(--ek-clay-600); }
.field .hint { font-size: var(--ek-fs-200); color: var(--ek-ink-3); margin-top: 0.3rem; font-weight: 400; }
.input, .select, .textarea {
  width: 100%; font-family: inherit; font-size: var(--ek-fs-400); color: var(--ek-ink);
  background: var(--ek-surface); border: 1.5px solid var(--ek-line-2);
  border-radius: var(--ek-r-sm); padding: 0.7rem 0.85rem; min-height: 46px;
  transition: border-color var(--ek-dur-fast) var(--ek-ease), box-shadow var(--ek-dur-fast) var(--ek-ease);
}
.textarea { min-height: 140px; resize: vertical; line-height: 1.5; }
.input:focus, .select:focus, .textarea:focus { outline: none; border-color: var(--ek-evergreen); box-shadow: 0 0 0 3px rgba(30,77,43,0.15); }
.input[aria-invalid="true"], .select[aria-invalid="true"], .textarea[aria-invalid="true"] { border-color: #B23A2E; box-shadow: 0 0 0 3px rgba(178,58,46,0.14); }
.field__error { display: none; color: #97281E; font-size: var(--ek-fs-200); font-weight: 600; margin-top: 0.35rem; }
.field__error.is-shown { display: flex; align-items: center; gap: 0.35rem; }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 var(--ek-5); }
@media (max-width: 620px) { .field-grid { grid-template-columns: 1fr; } }

.checkbox-field { display: flex; gap: var(--ek-3); align-items: flex-start; }
.checkbox-field input[type="checkbox"] { width: 20px; height: 20px; margin-top: 3px; accent-color: var(--ek-evergreen); flex-shrink: 0; }
.checkbox-field label { font-size: var(--ek-fs-300); color: var(--ek-ink-2); font-weight: 400; }

.form-note {
  background: var(--ek-status-bg-ongoing); border: 1px solid var(--ek-water-200);
  border-radius: var(--ek-r-sm); padding: var(--ek-4); font-size: var(--ek-fs-300); color: var(--ek-water-700);
  display: flex; gap: var(--ek-3); align-items: flex-start;
}

/* ---------- Drawer / bottom-sheet ---------- */
.overlay { position: fixed; inset: 0; background: rgba(20,40,22,0.42); opacity: 0; visibility: hidden; transition: opacity var(--ek-dur) var(--ek-ease), visibility var(--ek-dur); z-index: 150; }
.overlay.is-open { opacity: 1; visibility: visible; }

/* ---------- Empty & error states ---------- */
.state {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  gap: var(--ek-3); padding: var(--ek-8) var(--ek-4); color: var(--ek-ink-2);
  border: 1px dashed var(--ek-line-2); border-radius: var(--ek-r-md); background: var(--ek-surface-2);
}
.state svg { width: 44px; height: 44px; color: var(--ek-moss); }
.state h3 { margin: 0; }
.state p { margin: 0; max-width: 40ch; }

/* ---------- Divider label ---------- */
.divider-label { display: flex; align-items: center; gap: var(--ek-4); color: var(--ek-ink-3); font-size: var(--ek-fs-200); letter-spacing: var(--ek-ls-caps); text-transform: uppercase; font-weight: 650; }
.divider-label::before, .divider-label::after { content: ""; flex: 1; height: 1px; background: var(--ek-line); }

/* ---------- Breadcrumb ---------- */
.breadcrumb { font-size: var(--ek-fs-200); color: var(--ek-ink-3); margin-bottom: var(--ek-4); }
.breadcrumb a { color: var(--ek-ink-2); text-decoration: none; }
.breadcrumb a:hover { color: var(--ek-clay-600); text-decoration: underline; }
.breadcrumb span[aria-hidden] { margin-inline: 0.4rem; }

/* ---------- Toast / live announcer (visually subtle) ---------- */
.visually-hidden-live { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }