/* MedFast design tokens: 8px rhythm, monochrome surfaces, one critical accent. */
:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;

  --ink: #000000;
  --paper: #ffffff;
  --surface: #f5f5f5;
  --surface-raised: #fafafa;
  --line: #d4d4d4;
  --line-strong: #a3a3a3;
  --muted: #525252;
  --critical: #d92d20;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 64px;
  --space-8: 96px;

  --text-xs: 0.6875rem;
  --text-sm: 0.75rem;
  --text-body: 1rem;
  --text-lg: 1.25rem;
  --text-xl: 1.75rem;
  --text-display: clamp(3.25rem, 10vw, 8.5rem);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  grid-template-rows: auto 1fr auto;
  background: var(--paper);
  color: var(--ink);
}

a,
button,
input {
  color: inherit;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

button:disabled,
input:disabled {
  cursor: not-allowed;
  opacity: 0.52;
}

button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 4px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  inset: var(--space-2) auto auto var(--space-2);
  z-index: 10;
  padding: 12px var(--space-3);
  translate: 0 -160%;
  background: var(--ink);
  color: var(--paper);
  font-weight: 700;
}

.skip-link:focus {
  translate: 0;
}

.site-header,
main,
.site-footer {
  width: min(100% - 48px, 1184px);
  margin-inline: auto;
}

.site-header {
  position: relative;
  min-height: 80px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-6);
  border-bottom: 1px solid var(--line);
}

.wordmark {
  font-size: 0.875rem;
  font-weight: 850;
  letter-spacing: 0.18em;
  text-decoration: none;
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-4);
  grid-column: 3;
  grid-row: 1;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--muted);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.status__mark,
.status-pill__dot {
  width: 9px;
  height: 9px;
  flex: none;
  border: 2px solid currentColor;
  border-radius: 50%;
}

.status--ready {
  color: var(--ink);
}

.status--ready .status__mark,
.status-pill__dot {
  background: var(--ink);
}

.status--error {
  color: var(--critical);
}

.menu-toggle {
  display: none;
  min-height: 44px;
  padding: 0 var(--space-3);
  border: 1px solid var(--ink);
  background: var(--paper);
  font-size: var(--text-sm);
  font-weight: 750;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  grid-column: 2;
  grid-row: 1;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 44px;
  color: var(--muted);
  font-size: var(--text-sm);
  font-weight: 700;
  text-decoration: none;
}

.site-nav__link span {
  color: var(--line-strong);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
}

.site-nav__link:hover,
.site-nav__link--active {
  color: var(--ink);
}

main {
  padding-block: var(--space-8) var(--space-7);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 320px);
  align-items: end;
  gap: var(--space-7);
  padding-bottom: var(--space-8);
  border-bottom: 2px solid var(--ink);
}

.hero__copy {
  max-width: 840px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-4);
  color: var(--muted);
  font-size: var(--text-sm);
  font-weight: 800;
  letter-spacing: 0.12em;
  line-height: 1.2;
  text-transform: uppercase;
}

.eyebrow__rule {
  display: inline-block;
  width: 32px;
  height: 1px;
  background: var(--line-strong);
}

.eyebrow--critical {
  color: var(--critical);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  font-weight: 760;
}

h1 {
  max-width: 920px;
  margin-bottom: var(--space-5);
  font-size: var(--text-display);
  line-height: 0.88;
  letter-spacing: -0.075em;
}

h2 {
  margin-bottom: var(--space-3);
  font-size: var(--text-xl);
  line-height: 1.05;
  letter-spacing: -0.045em;
}

h3 {
  margin-bottom: var(--space-3);
  font-size: var(--text-lg);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.lede {
  max-width: 680px;
  margin-bottom: 0;
  color: #404040;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  line-height: 1.55;
}

.hero__meta {
  display: grid;
  justify-items: start;
  align-content: end;
  gap: var(--space-3);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid var(--line-strong);
  font-size: var(--text-sm);
  font-weight: 750;
}

.status-pill__dot {
  width: 7px;
  height: 7px;
  border: 0;
}

.meta-line {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
}

.command-card {
  max-width: 920px;
  margin-top: var(--space-7);
  padding: clamp(var(--space-4), 5vw, var(--space-6));
  border: 1px solid var(--line-strong);
  background: var(--surface-raised);
}

.command-card__topline,
.card__topline,
.section-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
}

.command-card .eyebrow,
.section-heading .eyebrow {
  margin-bottom: var(--space-3);
}

.step-label,
.card__index {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.command-card__copy {
  max-width: 560px;
  margin-bottom: var(--space-5);
  color: #404040;
  line-height: 1.55;
}

.search-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-2);
}

.input {
  width: 100%;
  min-height: 52px;
  padding: 0 var(--space-3);
  border: 1px solid var(--line-strong);
  border-radius: 0;
  background: var(--paper);
  font-size: var(--text-body);
}

.input::placeholder {
  color: var(--muted);
}

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-4);
  border: 2px solid var(--ink);
  border-radius: 0;
  font-weight: 750;
  text-decoration: none;
}

.button--solid {
  background: var(--ink);
  color: var(--paper);
}

.button--solid:hover:not(:disabled) {
  background: #2b2b2b;
}

.field-note {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: var(--space-3) 0 0;
  color: var(--muted);
  font-size: var(--text-sm);
}

.field-note__mark {
  color: var(--ink);
  font-weight: 800;
}

.section-block {
  margin-top: var(--space-8);
}

.section-heading {
  align-items: end;
  margin-bottom: var(--space-5);
}

.section-heading__note {
  max-width: 240px;
  margin: 0;
  color: var(--muted);
  font-size: var(--text-sm);
  line-height: 1.5;
  text-align: right;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.card {
  min-height: 280px;
  padding: var(--space-4);
  background: var(--paper);
}

.card--active {
  background: var(--surface);
}

.card__topline {
  align-items: center;
  margin-bottom: var(--space-7);
}

.card p {
  min-height: 72px;
  margin-bottom: var(--space-5);
  color: #404040;
  line-height: 1.5;
}

.badge {
  display: inline-flex;
  min-height: 24px;
  align-items: center;
  padding: 0 7px;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: 0.1em;
}

.badge--dark {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 44px;
  font-size: var(--text-sm);
  font-weight: 750;
  text-decoration: none;
}

.card__link:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.card__link--muted {
  color: var(--muted);
}

.critical-pattern {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: var(--space-4);
  align-items: start;
  margin-top: var(--space-8);
  padding: var(--space-4);
  border: 1px solid var(--critical);
}

.critical-pattern__icon {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: 2px solid var(--critical);
  border-radius: 50%;
  color: var(--critical);
  font-size: var(--text-lg);
  font-weight: 850;
}

.critical-pattern .eyebrow {
  margin-bottom: var(--space-2);
}

.critical-pattern h2 {
  max-width: 600px;
}

.critical-pattern p:last-child {
  max-width: 640px;
  margin-bottom: 0;
  color: #404040;
  line-height: 1.5;
}

.site-footer {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-4);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: var(--text-sm);
  line-height: 1.5;
}

.site-footer p {
  max-width: 700px;
  margin-bottom: 0;
}

.site-footer__mark {
  flex: none;
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: var(--text-xs);
  font-weight: 700;
}

.error-page {
  align-self: center;
}

@media (max-width: 760px) {
  .site-header,
  main,
  .site-footer {
    width: min(100% - 32px, 1184px);
  }

  .site-header {
    min-height: 72px;
    grid-template-columns: 1fr auto;
    gap: var(--space-3);
  }

  .header-actions {
    grid-column: 2;
  }

  .status {
    font-size: var(--text-xs);
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
  }

  .site-nav {
    display: none;
    position: absolute;
    inset: 72px 0 auto;
    z-index: 5;
    grid-column: auto;
    grid-row: auto;
    padding: var(--space-2);
    border: 1px solid var(--line-strong);
    background: var(--paper);
  }

  .site-nav--open {
    display: grid;
  }

  .site-nav__link {
    justify-content: space-between;
    min-height: 52px;
    padding-inline: var(--space-3);
    border-bottom: 1px solid var(--line);
  }

  .site-nav__link:last-child {
    border-bottom: 0;
  }

  main {
    padding-block: var(--space-7) var(--space-6);
  }

  .hero {
    grid-template-columns: 1fr;
    gap: var(--space-5);
    padding-bottom: var(--space-7);
  }

  .hero__meta {
    align-content: start;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .card {
    min-height: auto;
  }

  .card__topline {
    margin-bottom: var(--space-6);
  }

  .card p {
    min-height: 0;
  }

  .section-heading {
    display: block;
  }

  .section-heading__note {
    max-width: 320px;
    margin-top: var(--space-3);
    text-align: left;
  }
}

@media (max-width: 520px) {
  .site-header,
  main,
  .site-footer {
    width: min(100% - 24px, 1184px);
  }

  .status {
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .command-card {
    margin-top: var(--space-6);
  }

  .search-form {
    grid-template-columns: 1fr;
  }

  .button--solid {
    width: 100%;
  }

  .critical-pattern {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: var(--space-3);
    padding: var(--space-3);
  }

  .site-footer {
    display: block;
  }

  .site-footer__mark {
    display: block;
    margin-top: var(--space-3);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* Toolkit surfaces layered on the Stage 4 foundation. */
.workspace-section {
  margin-top: var(--space-8);
  scroll-margin-top: var(--space-5);
}

.panel {
  padding: clamp(var(--space-4), 4vw, var(--space-6));
  border: 1px solid var(--line-strong);
  background: var(--surface-raised);
}

.search-panel {
  max-width: 100%;
}

.input--large {
  min-height: 60px;
  font-size: 1.1rem;
}

.filter-grid,
.form-grid,
.observation-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}

label {
  display: grid;
  gap: var(--space-2);
  color: var(--muted);
  font-size: var(--text-sm);
  font-weight: 700;
}

label .input,
label select,
label textarea {
  color: var(--ink);
  font-weight: 450;
}

textarea.input {
  padding-block: var(--space-3);
  resize: vertical;
}

.panel-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.button--small {
  min-height: 40px;
  padding-inline: var(--space-3);
  font-size: var(--text-sm);
}

.button--outline {
  background: var(--paper);
  color: var(--ink);
}

.button--outline:hover:not(:disabled) {
  background: var(--surface);
}

.filter-grid .input {
  min-height: 44px;
  padding-inline: 10px;
  font-size: var(--text-sm);
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: var(--space-5);
  border: 1px solid var(--line);
  background: var(--line);
}

.reference-card {
  padding: var(--space-4);
  background: var(--paper);
}

.reference-card h3 {
  margin-top: var(--space-5);
}

.reference-card__review {
  color: var(--muted);
  font-size: var(--text-sm);
}

.reference-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.reference-card h4 {
  margin: 0 0 var(--space-2);
  color: var(--muted);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.reference-card ul,
.reference-card p {
  margin-bottom: 0;
  color: #404040;
  font-size: var(--text-sm);
  line-height: 1.5;
}

.reference-card ul {
  padding-left: var(--space-4);
}

.reference-card details {
  margin-top: var(--space-4);
  border-top: 1px solid var(--line);
  padding-top: var(--space-3);
}

.reference-card summary {
  cursor: pointer;
  font-size: var(--text-sm);
  font-weight: 750;
}

.source-note {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px dashed var(--line);
  color: var(--muted) !important;
  font-size: var(--text-xs) !important;
}

.muted,
.empty-state {
  color: var(--muted);
}

.calculator-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: var(--space-3);
}

.calculator-tabs {
  display: grid;
  align-content: start;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.calculator-tab {
  display: grid;
  gap: var(--space-1);
  min-height: 68px;
  padding: var(--space-3);
  border: 0;
  background: var(--paper);
  color: var(--muted);
  text-align: left;
}

.calculator-tab:hover,
.calculator-tab--active {
  background: var(--ink);
  color: var(--paper);
}

.calculator-tab small {
  color: inherit;
  font-size: var(--text-xs);
  line-height: 1.3;
  opacity: 0.75;
}

.calculator-panel h3 {
  margin: var(--space-2) 0 0;
}

.form-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  color: var(--muted);
  font-size: var(--text-xs);
  font-weight: 700;
}

.form-heading .step-label {
  display: block;
}

.form-description {
  max-width: 680px;
  color: #404040;
  line-height: 1.5;
}

.calculator-panel .button {
  margin-top: var(--space-5);
}

.check-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
}

.checkbox-label {
  display: flex;
  grid-template-columns: none;
  align-items: flex-start;
  gap: var(--space-2);
  min-height: 44px;
  padding: var(--space-2);
  border: 1px solid var(--line);
  background: var(--paper);
  color: #404040;
  cursor: pointer;
  font-weight: 550;
  line-height: 1.35;
}

.checkbox-label input {
  width: 18px;
  height: 18px;
  flex: none;
  margin: 0;
  accent-color: var(--ink);
}

.result-panel {
  min-height: 120px;
  margin-top: var(--space-3);
  padding: var(--space-4);
  border: 1px solid var(--line-strong);
  background: var(--surface);
}

.result-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
}

.result-heading p {
  max-width: 600px;
  margin: var(--space-2) 0 0;
  color: #404040;
  line-height: 1.5;
  text-align: right;
}

.result-score {
  display: block;
  margin-top: var(--space-2);
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: -0.06em;
}

.result-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.result-chip {
  padding: 6px 8px;
  border: 1px solid var(--line-strong);
  background: var(--paper);
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: var(--text-xs);
}

.result-chip strong {
  color: var(--ink);
}

.encounter-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: var(--space-3);
}

.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.observation-block {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 2px solid var(--ink);
}

.observation-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin-top: 0;
  margin-bottom: var(--space-4);
}

.observation-grid .input {
  min-height: 44px;
  padding-inline: 8px;
}

.timeline {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-5);
}

.timeline-item {
  padding: var(--space-3);
  border-left: 3px solid var(--ink);
  background: var(--paper);
}

.timeline-item time {
  color: var(--muted);
  font-size: var(--text-xs);
  font-weight: 700;
}

.timeline-item p {
  margin: var(--space-2) 0 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: var(--text-sm);
}

.timeline-item small {
  display: block;
  margin-top: var(--space-2);
  color: var(--muted);
}

.handover-box {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--line-strong);
}

.handover-output {
  width: 100%;
  margin-top: var(--space-3);
  background: var(--paper);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: var(--text-sm);
  line-height: 1.5;
}

.encounter-list-panel {
  align-self: start;
}

.text-button {
  min-height: 36px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: var(--text-xs);
  font-weight: 750;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.encounter-row {
  display: grid;
  width: 100%;
  gap: var(--space-1);
  padding: var(--space-3) 0;
  border: 0;
  border-top: 1px solid var(--line);
  background: transparent;
  text-align: left;
}

.encounter-row:hover {
  color: var(--muted);
}

.encounter-row span {
  color: var(--muted);
  font-size: var(--text-xs);
}

.content-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.content-grid .card {
  min-height: 360px;
}

.error-message {
  color: var(--critical);
  font-weight: 700;
}

.status-pill--critical {
  border-color: var(--critical);
  color: var(--critical);
}

.status-pill--critical .status-pill__dot {
  background: var(--critical);
}

.arrest-controls {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-3);
  border: 1px solid var(--critical);
  background: var(--paper);
}

.arrest-clock {
  min-width: 96px;
  color: var(--critical);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 2rem;
  font-weight: 800;
}

.arrest-events {
  margin: var(--space-4) 0 0;
  padding-left: var(--space-5);
  color: #404040;
}

.arrest-events li {
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--line);
}

.arrest-events time {
  margin-right: var(--space-2);
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: var(--text-xs);
}

@media (max-width: 900px) {
  .site-nav {
    gap: var(--space-3);
  }

  .filter-grid,
  .observation-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .calculator-layout,
  .encounter-layout {
    grid-template-columns: 1fr;
  }

  .calculator-tabs {
    display: flex;
    overflow-x: auto;
  }

  .calculator-tab {
    min-width: 170px;
  }

  .encounter-list-panel {
    order: -1;
  }
}

@media (max-width: 640px) {
  .site-header {
    grid-template-columns: auto 1fr;
    gap: var(--space-3);
  }

  .site-nav {
    display: none;
  }

  .header-actions {
    grid-column: 2;
  }

  .header-actions .status {
    margin-left: auto;
  }

  .filter-grid,
  .form-grid,
  .observation-grid,
  .check-grid,
  .reference-columns,
  .two-col,
  .content-grid,
  .result-grid {
    grid-template-columns: 1fr;
  }

  .result-heading {
    display: block;
  }

  .result-heading p {
    margin-top: var(--space-3);
    text-align: left;
  }

  .panel-actions .button,
  .panel-actions a.button {
    width: 100%;
  }

  .site-nav__link {
    min-height: 48px;
  }
}

/* FREC 4 field edition: a record-first layout with a warm paper ground and a hard clinical grid. */
:root {
  --paper: #f4f2ed;
  --surface: #e9e6de;
  --surface-raised: #fbfaf7;
  --line: #c9c5bb;
  --line-strong: #7e7a71;
  --muted: #4f4c46;
  --ink: #121212;
  --critical: #b42318;
  --text-display: clamp(3.2rem, 8vw, 7.4rem);
}

html { background: var(--paper); }
body { background: var(--paper); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; }
h1, h2, h3 { font-family: "Iowan Old Style", "Baskerville", "Times New Roman", serif; font-weight: 600; letter-spacing: -0.045em; }
h1 { font-size: var(--text-display); line-height: 0.9; letter-spacing: -0.075em; }
h1 em { color: var(--critical); font-style: normal; }
h2 { font-size: clamp(2rem, 4vw, 3.7rem); line-height: 0.98; }
h3 { font-size: clamp(1.35rem, 2vw, 1.9rem); }

.site-header { position: sticky; top: 0; z-index: 20; width: min(100% - 48px, 1280px); min-height: 72px; background: var(--paper); border-bottom: 1px solid var(--ink); }
.wordmark { display: flex; align-items: baseline; gap: 10px; letter-spacing: 0.16em; }
.wordmark small { color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.55rem; letter-spacing: 0.04em; }
.site-nav { gap: 22px; }
.site-nav__link { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.68rem; letter-spacing: 0.02em; text-transform: uppercase; }
.site-nav__link span { color: var(--critical); font-size: 0.62rem; }
.header-actions { gap: 14px; }
.status { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.62rem; text-transform: uppercase; }
.button { min-height: 50px; border-width: 1px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.72rem; letter-spacing: 0.02em; text-transform: uppercase; }
.button--solid { border-color: var(--ink); }
.button--solid:hover:not(:disabled) { background: var(--critical); border-color: var(--critical); }
.button--quiet { border: 0; border-bottom: 1px solid var(--ink); background: transparent; color: var(--ink); }
.button--quiet:hover:not(:disabled) { background: var(--surface); }
.button--large { min-height: 58px; padding-inline: 20px; }
.button--small { min-height: 38px; font-size: 0.6rem; }

main { width: min(100% - 48px, 1280px); padding-block: 0 80px; }
.masthead { padding: 34px 0 0; scroll-margin-top: 82px; }
.masthead__rule { display: flex; justify-content: space-between; gap: 18px; padding: 0 0 14px; border-bottom: 1px solid var(--ink); color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.63rem; letter-spacing: 0.08em; }
.masthead__rule b { color: var(--ink); font-weight: 700; }
.masthead__rule i { display: inline-block; width: 7px; height: 7px; margin: 0 4px; border-radius: 50%; background: var(--ink); }
.masthead__grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: clamp(30px, 8vw, 120px); align-items: end; padding: 70px 0 64px; border-bottom: 1px solid var(--ink); }
.masthead__copy { max-width: 820px; }
.masthead .eyebrow { margin-bottom: 24px; color: var(--critical); }
.masthead h1 { margin-bottom: 30px; }
.masthead .lede { max-width: 650px; color: #34322e; font-size: clamp(1.06rem, 1.8vw, 1.32rem); line-height: 1.45; }
.action-rail { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; margin-top: 34px; }
.scene-card { padding: 20px; border: 1px solid var(--ink); background: var(--surface); }
.scene-card__top { display: flex; align-items: center; justify-content: space-between; padding-bottom: 16px; border-bottom: 1px solid var(--line-strong); color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.64rem; letter-spacing: 0.12em; }
.scene-card__mark { display: grid; width: 30px; height: 30px; place-items: center; border: 1px solid var(--critical); color: var(--critical); font-size: 1.2rem; }
.scene-card dl { margin: 20px 0; }
.scene-card dl div { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--line); }
.scene-card dt, .scene-card dd { margin: 0; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.66rem; }
.scene-card dt { color: var(--muted); }
.scene-card dd { text-align: right; }
.scene-card p { margin: 0; color: var(--muted); font-size: 0.78rem; line-height: 1.45; }
.quick-strip { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--ink); border-top: 0; }
.quick-strip a { display: grid; gap: 8px; min-height: 106px; padding: 17px 18px; border-right: 1px solid var(--ink); color: var(--ink); text-decoration: none; }
.quick-strip a:last-child { border-right: 0; }
.quick-strip a:hover { background: var(--ink); color: var(--paper); }
.quick-strip span { color: var(--critical); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.65rem; }
.quick-strip strong { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.73rem; text-transform: uppercase; }
.quick-strip small { color: var(--muted); font-size: 0.74rem; }
.quick-strip a:hover small { color: var(--paper); }

.workspace-section { margin-top: 100px; scroll-margin-top: 90px; }
.section-heading { align-items: end; margin-bottom: 26px; padding-bottom: 18px; border-bottom: 1px solid var(--ink); }
.section-heading .eyebrow { margin-bottom: 12px; color: var(--critical); }
.section-heading h2 { max-width: 720px; margin-bottom: 0; }
.section-heading__note { max-width: 320px; color: var(--muted); font-size: 0.79rem; line-height: 1.45; text-align: right; }
.panel { padding: clamp(20px, 3vw, 34px); border: 1px solid var(--ink); background: var(--surface-raised); }
.pcr-section .encounter-layout { grid-template-columns: minmax(0, 1fr) 310px; gap: 18px; }
.pcr-card { border-top: 5px solid var(--critical); }
.form-heading { align-items: flex-start; margin-bottom: 22px; }
.form-heading h3 { margin: 6px 0 0; }
.step-label, .card__index { color: var(--critical); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.62rem; letter-spacing: 0.12em; text-transform: uppercase; }
.record-state { color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.66rem; text-transform: uppercase; }
.pcr-callout { display: grid; grid-template-columns: 100px 1fr; gap: 16px; margin: 0 0 26px; padding: 14px 0; border-block: 1px solid var(--line); }
.pcr-callout strong { color: var(--critical); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.65rem; text-transform: uppercase; }
.pcr-callout span { color: var(--muted); font-size: 0.82rem; line-height: 1.45; }
.pcr-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-bottom: 14px; }
.pcr-grid--identity { grid-template-columns: 1.2fr 1fr 1fr 1.4fr; }
.pcr-grid--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.history-deck { margin: 18px 0; border-block: 1px solid var(--line); }
.history-deck summary { display: flex; justify-content: space-between; gap: 16px; padding: 13px 0; cursor: pointer; color: var(--ink); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.68rem; font-weight: 700; text-transform: uppercase; }
.history-deck summary::marker { color: var(--critical); }
.history-deck summary small { color: var(--critical); font-size: 0.59rem; letter-spacing: 0.08em; }
.history-deck__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; padding: 6px 0 16px; }
.history-deck__grid strong { display: block; margin-bottom: 9px; color: var(--critical); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.62rem; text-transform: uppercase; }
.history-deck__grid p { margin: 5px 0; color: var(--muted); font-size: 0.76rem; line-height: 1.4; }
.history-deck__grid b { color: var(--ink); }
label { color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.66rem; letter-spacing: 0.02em; text-transform: uppercase; }
.input { min-height: 48px; border: 1px solid var(--line-strong); background: var(--paper); font-size: 0.94rem; }
.input:focus { border-color: var(--ink); }
textarea.input { min-height: 78px; }
.pcr-card .panel-actions { margin-top: 22px; }
.observation-block { margin-top: 38px; padding-top: 30px; border-top: 2px solid var(--ink); }
.observation-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; }
.observation-grid label { font-size: 0.6rem; }
.observation-grid .input { min-height: 43px; padding-inline: 8px; }
.timeline { border-top: 1px solid var(--line); }
.timeline-item { padding: 16px 0; border-left: 0; border-bottom: 1px solid var(--line); background: transparent; }
.timeline-item time { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.62rem; }
.timeline-item p { margin-top: 7px; font-size: 0.76rem; }
.handover-box { margin-top: 36px; padding-top: 28px; border-top: 1px solid var(--line-strong); }
.handover-output { border-color: var(--ink); background: var(--paper); }
.encounter-list-panel { align-self: start; background: var(--ink); color: var(--paper); }
.encounter-list-panel .form-heading { border-bottom-color: #555; }
.encounter-list-panel .step-label, .encounter-list-panel .text-button { color: #e0ddd5; }
.encounter-list-panel h3 { color: var(--paper); }
.encounter-row { padding: 15px 0; border-top-color: #4a4a4a; color: var(--paper); }
.encounter-row span { color: #c8c4bb; }
.encounter-row:hover { color: var(--critical); }
.side-note { margin-top: 26px; color: #c8c4bb; font-size: 0.72rem; line-height: 1.5; }

.reference-toolbar { display: flex; align-items: stretch; flex-wrap: wrap; border: 1px solid var(--ink); background: var(--ink); }
.quick-filter { display: grid; gap: 4px; min-height: 64px; padding: 11px 16px; border: 0; border-right: 1px solid #535353; background: var(--ink); color: var(--paper); text-align: left; }
.quick-filter span { color: #c4c0b8; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.58rem; letter-spacing: 0.12em; }
.quick-filter { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.7rem; text-transform: uppercase; }
.quick-filter:hover, .quick-filter--active { background: var(--critical); }
.quick-filter--active span, .quick-filter:hover span { color: var(--paper); }
.reference-count { align-self: center; margin-left: auto; padding: 0 16px; color: #c4c0b8; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.64rem; }
.search-panel { margin-top: 16px; padding: 18px; background: var(--surface); }
.search-line { display: grid; grid-template-columns: 24px minmax(0, 1fr) auto; gap: 10px; align-items: center; }
.search-glyph { color: var(--critical); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 1.3rem; }
.search-line .input--large { min-height: 54px; border-color: var(--ink); background: var(--paper); font-size: 1rem; }
.search-line .button { min-height: 54px; }
.filter-grid { margin-top: 14px; gap: 10px; }
.filter-grid .input { background: var(--paper); }
.result-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin-top: 18px; border-color: var(--ink); background: var(--ink); }
.reference-card { min-height: 100%; padding: 22px; background: var(--surface-raised); }
.reference-card h3 { margin-top: 17px; margin-bottom: 8px; }
.reference-card__review { color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.64rem; }
.reference-columns { gap: 20px; margin-top: 20px; }
.reference-card h4 { color: var(--critical); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.61rem; letter-spacing: 0.09em; }
.reference-card ul, .reference-card p { color: #34322e; font-size: 0.82rem; line-height: 1.48; }
.reference-card ul { margin-top: 0; }
.badge { border-color: var(--line-strong); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.56rem; }
.badge--accent { border-color: var(--critical); color: var(--critical); }
.dose-prompt, .linked-meds { display: grid; gap: 5px; margin-top: 20px; padding: 12px; border-left: 3px solid var(--critical); background: var(--surface); }
.dose-prompt strong, .linked-meds strong { color: var(--critical); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.59rem; letter-spacing: 0.08em; text-transform: uppercase; }
.dose-prompt span, .linked-meds span { color: #34322e; font-size: 0.77rem; line-height: 1.45; }
.source-note { color: var(--muted) !important; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.61rem !important; line-height: 1.45 !important; }

.calculator-section .calculator-layout { grid-template-columns: 280px minmax(0, 1fr); gap: 18px; }
.calculator-tabs { border-color: var(--ink); background: var(--ink); }
.calculator-tab { min-height: 70px; border-bottom: 1px solid var(--line); background: var(--surface-raised); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.68rem; text-transform: uppercase; }
.calculator-tab:hover, .calculator-tab--active { background: var(--ink); color: var(--paper); }
.calculator-panel { min-height: 310px; border-top: 5px solid var(--ink); }
.calculator-panel .form-description { max-width: 700px; color: var(--muted); font-size: 0.84rem; }
.calculator-panel .button { margin-top: 24px; }
.result-panel { margin-top: 18px; border: 1px solid var(--ink); background: var(--surface); }
.result-score { color: var(--critical); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.result-chip { border-color: var(--line-strong); background: var(--paper); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.library-section .card-grid { border-color: var(--ink); background: var(--ink); }
.library-section .content-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.library-section .card { min-height: 300px; background: var(--surface-raised); }
.library-section .card__topline { margin-bottom: 36px; }
.library-section .card h3 { font-size: 1.55rem; }
.library-section .card p { min-height: 80px; color: var(--muted); font-size: 0.82rem; }
.source-links { display: grid; gap: 9px; margin-top: 18px; }
.source-links a { color: var(--ink); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.68rem; text-decoration: underline; text-underline-offset: 4px; }
.source-links a:hover { color: var(--critical); }
.critical-pattern { margin-top: 90px; border-color: var(--critical); background: #f9ebe8; }
.critical-pattern h2 { max-width: 760px; }
.critical-pattern p { color: #4a2b27; }
.site-footer { width: min(100% - 48px, 1280px); padding-block: 28px 38px; border-top: 1px solid var(--ink); }
.site-footer p { color: var(--muted); font-size: 0.76rem; }
.site-footer__mark { color: var(--critical); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.63rem; }
.mobile-dock { display: none; }

/* The field kit behaves like four working surfaces, not one long document. */
[data-app-panel][hidden] { display: none !important; }
.app-tab-link[aria-selected="true"],
.app-tab-link.app-tab-link--active { color: var(--ink); }
.site-nav .app-tab-link[aria-selected="true"] { border-bottom: 3px solid var(--critical); }

@media (max-width: 900px) {
  .masthead__grid, .pcr-section .encounter-layout, .calculator-section .calculator-layout { grid-template-columns: 1fr; }
  .scene-card { max-width: 480px; }
  .pcr-grid--identity { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .observation-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .calculator-tabs { display: flex; overflow-x: auto; }
  .calculator-tab { min-width: 180px; border-right: 1px solid var(--line); }
  .encounter-list-panel { order: -1; }
}

@media (max-width: 640px) {
  body { padding-bottom: 72px; }
  .site-header, main, .site-footer { width: min(100% - 28px, 1280px); }
  .site-header { min-height: 62px; grid-template-columns: 1fr auto; gap: 10px; }
  .wordmark { display: grid; gap: 2px; }
  .wordmark small { font-size: 0.48rem; }
  .site-nav { display: none; }
  .header-actions { grid-column: 2; }
  .header-actions .status { margin-left: 0; }
  #install-app { display: none !important; }
  main { padding-bottom: 30px; }
  .masthead { padding-top: 20px; }
  .masthead__rule { align-items: flex-start; flex-direction: column; gap: 7px; font-size: 0.55rem; }
  .masthead__grid { gap: 32px; padding: 44px 0 34px; }
  .masthead h1 { font-size: clamp(3.1rem, 16vw, 5.5rem); }
  .masthead .lede { font-size: 1rem; }
  .action-rail { align-items: stretch; flex-direction: column; gap: 8px; }
  .action-rail .button { width: 100%; }
  .quick-strip { grid-template-columns: repeat(2, 1fr); }
  .quick-strip a { min-height: 86px; padding: 13px; }
  .quick-strip a:nth-child(2) { border-right: 0; }
  .quick-strip a:nth-child(-n+2) { border-bottom: 1px solid var(--ink); }
  .workspace-section { margin-top: 68px; }
  .section-heading { display: block; }
  .section-heading__note { max-width: 100%; margin-top: 14px; text-align: left; }
  .pcr-grid, .pcr-grid--identity, .pcr-grid--two, .reference-columns, .content-grid { grid-template-columns: 1fr; }
  .history-deck__grid { grid-template-columns: 1fr; gap: 12px; }
  .pcr-callout { grid-template-columns: 1fr; gap: 6px; }
  .panel { padding: 18px 14px; }
  .observation-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .reference-toolbar { overflow-x: auto; flex-wrap: nowrap; }
  .quick-filter { min-width: max-content; }
  .reference-count { display: none; }
  .search-line { grid-template-columns: 20px minmax(0, 1fr); }
  .search-line .button { grid-column: 1 / -1; width: 100%; }
  .filter-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .result-grid { grid-template-columns: 1fr; }
  .reference-card { padding: 18px 14px; }
  .calculator-tabs { margin-inline: -14px; padding-inline: 14px; border-inline: 0; }
  .calculator-panel { border-top-width: 4px; }
  .library-section .card { min-height: 0; }
  .critical-pattern { grid-template-columns: 36px 1fr; gap: 12px; margin-top: 68px; padding: 14px; }
  .critical-pattern__icon { width: 32px; height: 32px; }
  .mobile-dock { position: fixed; inset: auto 0 0; z-index: 30; display: grid; grid-template-columns: repeat(4, 1fr); padding: 7px 8px calc(7px + env(safe-area-inset-bottom)); border-top: 1px solid var(--ink); background: var(--paper); }
  .mobile-dock a { display: grid; justify-items: center; gap: 2px; color: var(--ink); text-decoration: none; }
  .mobile-dock a.app-tab-link--active { color: var(--critical); }
  .mobile-dock span { color: var(--critical); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.95rem; line-height: 1; }
  .mobile-dock strong { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.56rem; text-transform: uppercase; }
}