/* ==========================================================================
   Blue Care Health OS — App Shell
   Fixed topbar + collapsible sidebar + content. Structural responsiveness.
   ========================================================================== */

.shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: var(--shell-sidebar-w) 1fr;
  grid-template-rows: var(--shell-topbar-h) 1fr;
  grid-template-areas: "topbar topbar" "sidebar main";
}
.shell[data-sidebar='collapsed'] { grid-template-columns: var(--shell-sidebar-w-collapsed) 1fr; }

/* ---- Topbar ---- */
.topbar {
  grid-area: topbar;
  position: sticky; top: 0;
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: 0 var(--space-4);
  background: var(--chrome);
  border-bottom: 1px solid var(--border);
}
.mobile-menu-btn { display: none; }
.mobile-nav-backdrop {
  position: fixed; inset: 0;
  background: var(--overlay);
  z-index: calc(var(--z-drawer) - 1);
  opacity: 0; pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-out);
}
.mobile-nav-backdrop.is-open { opacity: 1; pointer-events: auto; }

.topbar-brand {
  display: flex; align-items: center; gap: var(--space-2);
  font-weight: 700; font-size: var(--text-md);
  padding-right: var(--space-3);
  flex-shrink: 0;
}
.topbar-brand-mark {
  width: 28px; height: 28px;
  border-radius: var(--radius-md);
  background: var(--brand-fill);
  color: var(--ink-on-brand);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700;
  flex-shrink: 0;
}
.topbar-sep { width: 1px; height: 24px; background: var(--border-strong); flex-shrink: 0; }
.topbar-search {
  display: flex; align-items: center; gap: var(--space-2);
  height: var(--control-h);
  padding: 0 var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink-muted);
  font-size: var(--text-base);
  width: 100%; max-width: 360px;
  transition: border-color var(--duration-base) var(--ease-out);
}
.topbar-search:hover { border-color: var(--ink-muted); }
.topbar-search svg { width: 16px; height: 16px; flex-shrink: 0; }
.topbar-spacer { flex: 1; }
.topbar-actions { display: flex; align-items: center; gap: var(--space-2); flex-shrink: 0; }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px;
  border-radius: var(--radius-md);
  color: var(--ink-secondary);
  transition: background-color var(--duration-fast) var(--ease-out), color var(--duration-fast) var(--ease-out);
  position: relative;
}
.icon-btn:hover { background: var(--chrome-strong); color: var(--ink); }
.icon-btn.is-active { background: var(--brand-subtle); color: var(--brand); }
.icon-btn svg { width: 18px; height: 18px; }
.icon-btn-dot {
  position: absolute; top: 6px; right: 6px;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--caution); border: 1.5px solid var(--chrome);
}

.facility-switcher {
  display: flex; align-items: center; gap: var(--space-2);
  height: var(--control-h);
  padding: 0 var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  font-size: var(--text-sm);
  max-width: 260px;
}
.facility-switcher:hover { border-color: var(--ink-muted); background: var(--chrome); }
.facility-switcher-name { font-weight: 600; color: var(--ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.facility-switcher-org { color: var(--ink-muted); font-size: var(--text-xs); }
.facility-switcher svg.chevron { width: 14px; height: 14px; color: var(--ink-muted); flex-shrink: 0; }

.user-menu-btn {
  display: flex; align-items: center; gap: var(--space-2);
  padding: var(--space-1) var(--space-2) var(--space-1) var(--space-1);
  border-radius: var(--radius-full);
}
.user-menu-btn:hover { background: var(--chrome-strong); }
.user-menu-role { font-size: var(--text-xs); color: var(--ink-muted); }
.user-menu-name { font-size: var(--text-sm); font-weight: 500; }

/* ---- Sidebar ---- */
.sidebar {
  grid-area: sidebar;
  background: var(--chrome);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  overflow-y: auto;
  padding: var(--space-3);
  gap: var(--space-1);
  transition: width var(--duration-base) var(--ease-out);
}
.nav-section-label {
  font-size: 10px; font-weight: 700; letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding: var(--space-4) var(--space-3) var(--space-1);
}
.nav-section-label:first-child { padding-top: var(--space-2); }
.nav-item {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--ink-secondary);
  transition: background-color var(--duration-fast) var(--ease-out), color var(--duration-fast) var(--ease-out);
}
.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; color: var(--ink-muted); }
.nav-item:hover { background: var(--chrome-strong); color: var(--ink); }
.nav-item.is-active { background: var(--brand-subtle); color: var(--brand); }
.nav-item.is-active svg { color: var(--brand); }
.nav-item-badge { margin-left: auto; }
.shell[data-sidebar='collapsed'] .nav-item span:not(.nav-item-badge),
.shell[data-sidebar='collapsed'] .nav-section-label,
.shell[data-sidebar='collapsed'] .nav-item-badge { display: none; }
.shell[data-sidebar='collapsed'] .nav-item { justify-content: center; }

.sidebar-footer {
  margin-top: auto;
  padding: var(--space-3);
  border-top: 1px solid var(--border);
}
.density-toggle {
  display: flex; align-items: center; justify-content: space-between;
  font-size: var(--text-xs); color: var(--ink-muted);
}
.shell[data-sidebar='collapsed'] .sidebar-footer { display: none; }

/* ---- Main content ---- */
.main {
  grid-area: main;
  padding: var(--content-pad);
  min-width: 0;
}
.page-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}
.page-header-titles h1 { margin-bottom: var(--space-1); }
.page-header-actions { display: flex; gap: var(--space-2); align-items: center; flex-shrink: 0; }
.breadcrumb {
  display: flex; align-items: center; gap: var(--space-1);
  font-size: var(--text-sm); color: var(--ink-muted);
  margin-bottom: var(--space-2);
}
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb svg { width: 14px; height: 14px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
.grid-main-side { display: grid; grid-template-columns: 1fr 320px; gap: var(--space-5); align-items: start; }
.stack { display: flex; flex-direction: column; gap: var(--space-5); }
.stack-sm { display: flex; flex-direction: column; gap: var(--space-3); }
.cluster { display: flex; align-items: center; gap: var(--space-2); flex-wrap: wrap; }

/* ---- Command palette ---- */
.palette-backdrop {
  position: fixed; inset: 0;
  background: var(--overlay);
  z-index: var(--z-modal-backdrop);
  display: flex; align-items: flex-start; justify-content: center;
  padding-top: 12vh;
  opacity: 0; pointer-events: none;
}
.palette-backdrop.is-open { opacity: 1; pointer-events: auto; }
.palette {
  width: min(560px, 92vw);
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid var(--border);
}
.palette-input-row {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-4);
  border-bottom: 1px solid var(--border);
}
.palette-input-row svg { width: 18px; height: 18px; color: var(--ink-muted); flex-shrink: 0; }
.palette-input { border: none; outline: none; background: none; font-size: var(--text-md); width: 100%; }
.palette-list { max-height: 360px; overflow-y: auto; padding: var(--space-2); }
.palette-item {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
}
.palette-item svg { width: 16px; height: 16px; color: var(--ink-muted); flex-shrink: 0; }
.palette-item[data-active='true'] { background: var(--brand-subtle); }
.palette-item-meta { margin-left: auto; font-size: var(--text-xs); color: var(--ink-muted); }
.palette-footer {
  display: flex; gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--border);
  font-size: var(--text-xs); color: var(--ink-muted);
}
.palette-footer .cluster { gap: var(--space-1); }

/* ---- Annotation layer (SOW module callouts) ---- */
.annotate-target { position: relative; }
[data-annotate='on'] .annotate-target { outline: 1.5px dashed color-mix(in oklch, var(--identity) 55%, transparent); outline-offset: 3px; border-radius: var(--radius-md); }
.annotate-badge {
  display: none;
  position: absolute;
  top: -10px; left: -10px;
  z-index: var(--z-tooltip);
  background: var(--identity);
  color: var(--ink-on-brand);
  font-size: 10px; font-weight: 700;
  font-family: var(--font-mono);
  width: 20px; height: 20px;
  border-radius: 50%;
  align-items: center; justify-content: center;
  cursor: help;
  box-shadow: var(--shadow-sm);
}
[data-annotate='on'] .annotate-badge { display: flex; }
.annotate-callout {
  position: fixed;
  z-index: var(--z-toast);
  max-width: 280px;
  background: var(--ink);
  color: var(--canvas);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  box-shadow: var(--shadow-lg);
  opacity: 0; transform: scale(0.96); pointer-events: none;
  transition: opacity 125ms var(--ease-out), transform 125ms var(--ease-out);
}
.annotate-callout.is-visible { opacity: 1; transform: scale(1); }
.annotate-callout strong { color: var(--identity); display: block; font-family: var(--font-mono); font-size: var(--text-xs); margin-bottom: 2px; }

/* ---- Tour ---- */
.tour-banner {
  position: fixed;
  left: 50%; bottom: var(--space-5);
  transform: translateX(-50%) translateY(0);
  z-index: var(--z-toast);
  display: flex; align-items: center; gap: var(--space-4);
  background: var(--ink);
  color: var(--canvas);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: min(640px, calc(100vw - 2 * var(--space-5)));
}
.tour-banner-step { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--identity); background: color-mix(in oklch, var(--identity) 35%, transparent); padding: 2px var(--space-2); border-radius: var(--radius-full); flex-shrink: 0; }
.tour-banner-text { font-size: var(--text-sm); flex: 1; }
.tour-banner-actions { display: flex; gap: var(--space-2); flex-shrink: 0; }
.tour-spotlight {
  position: fixed;
  z-index: var(--z-drawer);
  border-radius: var(--radius-md);
  box-shadow: 0 0 0 4px var(--identity), 0 0 0 9999px var(--overlay);
  pointer-events: none;
  transition: top var(--duration-deliberate) var(--ease-in-out), left var(--duration-deliberate) var(--ease-in-out),
              width var(--duration-deliberate) var(--ease-in-out), height var(--duration-deliberate) var(--ease-in-out);
}

/* ---- FHIR drawer JSON viewer ---- */
.fhir-json {
  background: var(--ink);
  color: oklch(0.88 0.02 155);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.6;
  padding: var(--space-4);
  border-radius: var(--radius-md);
  overflow-x: auto;
  white-space: pre;
}
.fhir-json .k { color: oklch(0.78 0.10 240); }
.fhir-json .s { color: oklch(0.80 0.11 90); }
.fhir-json .n { color: oklch(0.80 0.13 27); }
.fhir-resource-tag {
  display: inline-flex; align-items: center; gap: var(--space-1);
  font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 600;
  background: var(--info-subtle); color: var(--info-ink);
  padding: 2px var(--space-2); border-radius: var(--radius-sm);
}

/* ---- Context-switch transition (facility switch) ---- */
.context-fade {
  transition: opacity var(--duration-deliberate) var(--ease-in-out), filter var(--duration-deliberate) var(--ease-in-out);
}
.context-fade.is-switching { opacity: 0.35; filter: blur(2px); }
@media (prefers-reduced-motion: reduce) {
  .context-fade.is-switching { filter: none; }
}

/* ---- Responsive: structural collapse ---- */
@media (max-width: 1023px) {
  .shell { grid-template-columns: var(--shell-sidebar-w-collapsed) 1fr; }
  .shell .nav-item span:not(.nav-item-badge), .shell .nav-section-label, .shell .nav-item-badge { display: none; }
  .shell .nav-item { justify-content: center; }
  .shell .sidebar-footer { display: none; }
  .grid-main-side { grid-template-columns: 1fr; }
  .topbar-search { max-width: 220px; }
}
@media (max-width: 767px) {
  .shell { grid-template-columns: 1fr; grid-template-areas: "topbar" "main"; }
  .mobile-menu-btn { display: inline-flex; }
  .sidebar { display: none; }
  .sidebar.is-open-mobile {
    display: flex;
    position: fixed; top: 0; left: 0; bottom: 0;
    width: 264px; z-index: var(--z-drawer);
    box-shadow: var(--shadow-lg);
    padding-top: calc(var(--shell-topbar-h) + var(--space-2));
    transform: translateX(0);
    transition: transform var(--duration-base) var(--ease-out);
  }
  .sidebar.is-open-mobile .nav-item span:not(.nav-item-badge), .sidebar.is-open-mobile .nav-section-label { display: inline; }
  .sidebar.is-open-mobile .nav-item { justify-content: flex-start; }
  .sidebar.is-open-mobile .sidebar-footer { display: block; }
  .topbar-search { display: none; }
  .facility-switcher-org { display: none; }
  .facility-switcher-name { max-width: 90px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .user-menu-name, .user-menu-role { display: none; }
  .user-menu-btn .chevron { display: none; }
  .grid-2 { grid-template-columns: 1fr; }
  .table { min-width: 100%; }
}

/* ---- Doc shell — blueprint / index / design-system / roadmap ---- */
.doc-shell { background: var(--canvas); min-height: 100vh; }
.doc-main { max-width: 1100px; margin: 0 auto; padding: var(--space-8) var(--space-6) var(--space-16); }
.doc-main.doc-wide { max-width: 1280px; }
.doc-prose { font-family: var(--font-serif); font-size: var(--text-md); line-height: 1.7; color: var(--ink-secondary); max-width: 70ch; }
.doc-prose strong { color: var(--ink); }

/* ---- Blueprint diagrams — shared SVG diagram chrome ---- */
.diagram-panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-5); overflow-x: auto; }
.diagram-panel svg { display: block; margin: 0 auto; min-width: 640px; }
.dbox { fill: var(--surface); stroke: var(--border-strong); stroke-width: 1.5; rx: 8; }
.dbox-brand { fill: var(--brand-subtle); stroke: var(--brand); }
.dbox-identity { fill: var(--identity-subtle); stroke: var(--identity); }
.dbox-future { fill: var(--chrome); stroke: var(--border-strong); stroke-dasharray: 5 4; }
.dtext { fill: var(--ink); font-family: var(--font-sans); font-size: 12px; font-weight: 600; }
.dtext-sm { fill: var(--ink-muted); font-family: var(--font-sans); font-size: 10px; font-weight: 500; }
.dtext-mono { fill: var(--ink-secondary); font-family: var(--font-mono); font-size: 10px; }
.dline { stroke: var(--border-strong); stroke-width: 1.5; fill: none; }
.dline-arrow { stroke: var(--ink-muted); stroke-width: 1.5; fill: none; marker-end: url(#arrowhead); }
.dlabel-group { fill: var(--ink-faint); font-family: var(--font-sans); font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; }

/* ---- Patient self-service shell — distinct product surface ---- */
.patient-shell {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  background: var(--surface);
  display: flex; flex-direction: column;
}
.patient-topbar {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-4);
  border-bottom: 1px solid var(--border);
}
.patient-main { padding: var(--space-5) var(--space-4) var(--space-8); flex: 1; }
.patient-progress { height: 4px; background: var(--chrome-strong); border-radius: var(--radius-full); overflow: hidden; margin-bottom: var(--space-6); }
.patient-progress-fill { height: 100%; background: var(--brand-fill); transition: width var(--duration-slow) var(--ease-out); }
.patient-footer-actions {
  position: sticky; bottom: 0;
  background: linear-gradient(180deg, transparent, var(--surface) 30%);
  padding: var(--space-5) var(--space-4) var(--space-4);
  display: flex; gap: var(--space-3);
}
@media (min-width: 640px) {
  .patient-shell { border-inline: 1px solid var(--border); box-shadow: var(--shadow-md); margin-block: var(--space-6); min-height: calc(100vh - 2 * var(--space-6)); border-radius: var(--radius-lg); overflow: hidden; }
}