:root {
  --border: #d8d8d4;
  --text: #26251f;
  --text-muted: #6b6a63;
  --accent: #2f6d4f;
  --danger: #a3372c;
  --surface: #ffffff;
  --surface-2: #f5f4f0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; color: var(--text); background: var(--surface-2); }

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.75rem 1.25rem; background: var(--surface); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 600; font-size: 1.1rem; }
.nav button {
  margin-left: 0.5rem; padding: 0.4rem 0.8rem; border: 1px solid var(--border);
  background: var(--surface); border-radius: 6px; cursor: pointer;
}
.hidden { display: none !important; }

main { padding: 1.25rem; max-width: 1100px; margin: 0 auto; }

/* ── Auth ── */
.auth-card { max-width: 380px; margin: 3rem auto; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 1.5rem; }
.auth-tabs { display: flex; margin-bottom: 1rem; }
.auth-tabs .tab { flex: 1; padding: 0.5rem; border: none; background: none; border-bottom: 2px solid var(--border); cursor: pointer; }
.auth-tabs .tab.active { border-bottom-color: var(--accent); font-weight: 600; }
.auth-form { display: flex; flex-direction: column; gap: 0.75rem; }
.auth-form label { display: flex; flex-direction: column; gap: 0.25rem; font-size: 0.9rem; }
.auth-form input { padding: 0.5rem; border: 1px solid var(--border); border-radius: 6px; }
.error { color: var(--danger); font-size: 0.85rem; min-height: 1.2em; }

button.primary { background: var(--accent); color: #fff; border: none; }
button.danger { color: var(--danger); }
button { font: inherit; }

/* ── Dashboard: two columns on desktop ── */
.dashboard {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 1.25rem;
  align-items: start;
}

.hierarchy {
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
  padding: 0.75rem; position: sticky; top: 1rem;
}
.hierarchy-root {
  width: 100%; text-align: left; padding: 0.5rem; margin-bottom: 0.5rem;
  border: 1px solid var(--border); border-radius: 6px; background: var(--surface-2); cursor: pointer;
}
.state-group { margin-bottom: 0.25rem; }
.state-toggle {
  width: 100%; text-align: left; padding: 0.4rem; border: none; background: none; cursor: pointer;
  display: flex; align-items: center; gap: 0.4rem; font-weight: 500;
}
.facility-list { padding-left: 1.25rem; }
.facility-item { display: flex; align-items: center; gap: 0.4rem; padding: 0.2rem 0; font-size: 0.9rem; }
.hierarchy-selected { background: #e7f0ea; border-radius: 4px; }

.criteria-panel { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 1rem; }
.criteria-toolbar { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem; }
.toolbar-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.toolbar-actions button, .toolbar-actions select { padding: 0.4rem 0.7rem; border: 1px solid var(--border); border-radius: 6px; background: var(--surface); cursor: pointer; }

.criteria-form { display: flex; flex-direction: column; gap: 1rem; }
.field { display: flex; flex-direction: column; gap: 0.3rem; }
.field label { font-size: 0.85rem; color: var(--text-muted); }
.field input, .field select { padding: 0.45rem; border: 1px solid var(--border); border-radius: 6px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
.slider-row { display: flex; align-items: center; gap: 0.5rem; }
.slider-row input[type="range"] { flex: 1; }

/* "mixed" indicator, applied via JS when a multi-select disagrees on a field */
.is-mixed { border-color: #c98a2b !important; background: #fdf6e8; }
.is-mixed::placeholder { color: #c98a2b; }

.archive-list { display: flex; flex-direction: column; gap: 0.75rem; }
.archive-card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 1rem; }
.archive-card h3 { margin: 0 0 0.4rem; }
.archive-card .meta { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 0.5rem; }
.archive-actions { display: flex; gap: 0.5rem; margin-top: 0.6rem; }
.hint { color: var(--text-muted); font-size: 0.9rem; }

/* ── Responsive: phone / tablet ── */
@media (max-width: 800px) {
  .dashboard { grid-template-columns: 1fr; }
  .hierarchy { position: static; }
  .facility-list { max-height: 40vh; overflow-y: auto; }
  .field-row { grid-template-columns: 1fr; }
  .nav { display: flex; flex-wrap: wrap; }
}