/* Rubrica — brand system v1.1
   Palette, typography, and voice follow the brand identity doc.
   Rubric red (#C8102E) is reserved for:
     1) the vertical rule in the wordmark (the rubric)
     2) the left-rule on any single failing criterion
   Nothing else. */

:root {
  --ink:       #111827;
  --rubric:    #C8102E;
  --linen:     #F5F3EF;
  --slate:     #6B7280;
  --rule:      #E5E7EB;
  --paper:     #FFFFFF;

  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;

  --radius: 4px;
  --radius-lg: 8px;

  --pad-x:  clamp(20px, 5vw, 80px);   /* responsive horizontal page padding */
  --pad-y:  clamp(28px, 4vw, 56px);

  --gap-sm: 10px;
  --gap-md: 18px;
  --gap-lg: 32px;
  --gap-xl: 56px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.55;
  font-feature-settings: "cv05","cv11","ss01";
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }

/* ================ Typography scale ================ */
.display {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin: 0 0 var(--gap-md);
}
.section-title {
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0 0 var(--gap-md);
}
.sub { font-size: 16px; font-weight: 500; margin: 0; }
.body { font-size: 15px; font-weight: 400; }
.caption { font-size: 12px; font-weight: 400; color: var(--slate); display: block; margin-bottom: 6px; }
.caption.inline { display: inline; margin-left: 6px; }
.slate, .slate-text { color: var(--slate); }
.eyebrow {
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--slate); margin: 0 0 var(--gap-sm); font-weight: 500;
}
.lede {
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.55;
  max-width: 62ch;
  margin: 0 0 var(--gap-md);
}
code, .mono {
  font-family: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, monospace;
  font-size: 12.5px;
  color: var(--ink);
}

/* ================ Splash ================ */
#splash {
  position: fixed; inset: 0;
  background: var(--paper);
  z-index: 9999;
  display: grid; place-items: center;
  animation: splashFade 2s ease forwards;
  animation-delay: 0.3s;
}
#splash .splash-mark {
  width: clamp(180px, 26vw, 340px);
  height: auto;
  opacity: 0;
  animation: splashPop 1.6s ease forwards;
}
@keyframes splashPop {
  0%   { opacity: 0; transform: translateY(6px); }
  30%  { opacity: 1; transform: translateY(0); }
  80%  { opacity: 1; }
  100% { opacity: 0; }
}
@keyframes splashFade {
  0%, 85% { opacity: 1; pointer-events: auto; }
  100%    { opacity: 0; pointer-events: none; visibility: hidden; }
}

/* ================ Topbar + nav ================ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-lg);
  padding: 18px var(--pad-x);
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--rule);
}
.brand { display: inline-flex; align-items: center; text-decoration: none; flex-shrink: 0; }
.brand .wordmark { height: 30px; width: auto; display: block; }

.nav {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  align-items: center;
}
.nav-link {
  font-size: 14px;
  color: var(--slate);
  text-decoration: none;
  padding: 8px 12px;
  border-radius: var(--radius);
  transition: color 120ms ease, background-color 120ms ease;
}
.nav-link:hover { color: var(--ink); }
.nav-link.active {
  color: var(--ink);
  font-weight: 500;
  background: var(--linen);
}

/* ================ Route sections ================ */
.route { display: block; }
.route[hidden] { display: none; }

/* ================ HOME / landing ================ */
.hero {
  padding: clamp(56px, 8vw, 120px) var(--pad-x) clamp(40px, 5vw, 72px);
  max-width: 1100px;
  margin: 0 auto;
}
.hero .lede { max-width: 56ch; }

.cta-row {
  display: flex; flex-wrap: wrap; gap: 12px;
  margin-top: var(--gap-md);
}

.stats-band {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: var(--linen);
}
.stat {
  padding: 28px var(--pad-x);
  text-align: center;
  border-right: 1px solid var(--rule);
}
.stat:last-child { border-right: 0; }
.stat-num {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.stat-lbl {
  font-size: 12px;
  color: var(--slate);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 4px;
}

.section {
  padding: clamp(40px, 6vw, 84px) var(--pad-x);
  max-width: 1100px;
  margin: 0 auto;
}
.section.linen {
  background: var(--linen);
  max-width: none;
  margin: 0;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}
.section.linen > * { max-width: 1100px; margin-left: auto; margin-right: auto; }

.three-col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--gap-lg);
}
.feature { }
.feature-num {
  font-size: 12px; letter-spacing: 0.1em; color: var(--slate);
  font-weight: 500; margin-bottom: 8px;
}
.feature h3 { margin: 0 0 8px; }

.steps {
  list-style: none; padding: 0; margin: var(--gap-md) 0 var(--gap-lg);
  display: grid; gap: 12px;
}
.steps li {
  padding: 14px 18px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--paper);
  display: flex;
  gap: 16px;
  align-items: baseline;
}
.step-pill {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--slate);
  text-transform: uppercase;
  min-width: 130px;
  font-weight: 500;
}

.disclaimer-block {
  background: var(--linen);
  border-top: 1px solid var(--rule);
  color: var(--slate);
  font-size: 13px;
  padding: 20px var(--pad-x);
  text-align: center;
}

/* ================ ABOUT / FAQ container ================ */
.about-container { max-width: 100%; }
.voice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--gap-lg);
}
.voice-label {
  font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--rubric-off, var(--ink));
  font-weight: 500; margin-bottom: 6px;
  border-left: 3px solid var(--ink);
  padding-left: 10px;
}
.voice p { margin: 0; color: var(--slate); font-size: 14px; }

.faq-item {
  border-top: 1px solid var(--rule);
  padding: 18px 0;
}
.faq-item:last-child { border-bottom: 1px solid var(--rule); }
.faq-item summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  color: var(--slate);
  font-size: 20px;
  margin-left: 16px;
}
.faq-item[open] summary::after { content: "−"; }
.faq-item[open] summary { margin-bottom: 10px; }
.faq-item p { margin: 0; color: var(--slate); font-size: 14.5px; max-width: 72ch; }

/* ================ COVERAGE MATRIX ================ */
.coverage-controls {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 16px;
  margin: var(--gap-md) 0 var(--gap-lg);
  align-items: end;
}
.coverage-controls .grow { min-width: 0; }
@media (max-width: 640px) {
  .coverage-controls { grid-template-columns: 1fr; }
}
.cov-results { margin-top: var(--gap-md); }
.cov-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.cov-table thead th {
  text-align: left;
  font-weight: 500;
  padding: 10px 12px;
  border-bottom: 1px solid var(--rule);
  background: var(--linen);
  font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--slate);
}
.cov-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
.cov-status { font-weight: 500; }
.cov-status.yes { color: var(--ink); }
.cov-status.no  { color: var(--rubric); }
.cov-status.investigational  { color: var(--rubric); }
.cov-status.verify { color: var(--slate); }

/* ================ APP (decision tool) ================ */
.disclaimer {
  background: var(--linen);
  border-bottom: 1px solid var(--rule);
  color: var(--ink);
  font-size: 13px;
  padding: 12px var(--pad-x);
}

.app-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  min-height: calc(100vh - 210px);
}
@media (max-width: 980px) {
  .app-grid { grid-template-columns: 1fr; }
}

.panel {
  padding: clamp(24px, 3vw, 40px) var(--pad-x);
}
.panel.inputs { border-right: 1px solid var(--rule); }
.panel.output { background: var(--linen); }

.panel-header { margin-bottom: var(--gap-md); }
.panel-header .section-title { margin-bottom: 4px; }

.step {
  padding: 22px 0;
  border-top: 1px solid var(--rule);
}
.step:first-of-type { border-top: 0; padding-top: 0; }
.step-head {
  display: flex; align-items: baseline; gap: 14px;
  margin-bottom: 12px;
}
.step-num {
  font-size: 11px; font-weight: 500; color: var(--slate);
  letter-spacing: 0.12em; font-variant-numeric: tabular-nums;
  min-width: 22px;
}

details.step > summary {
  list-style: none;
  cursor: pointer;
  display: flex; align-items: baseline; gap: 14px;
  margin-bottom: 0;
}
details.step > summary::-webkit-details-marker { display: none; }
details.step[open] > summary { margin-bottom: 16px; }

.substep { display: grid; gap: 16px; }
.substep-block { display: block; }

.mac-note { margin-top: 6px; }
.proc-desc { margin-top: 10px; max-width: 68ch; }

/* ================ Form controls ================ */
input[type="text"], input[type="search"], input[type="number"], select, textarea {
  font: inherit;
  width: 100%;
  padding: 10px 13px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  transition: border-color 120ms ease;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--ink);
}
input[type="checkbox"], input[type="radio"] { accent-color: var(--ink); }
select[size] { padding: 0; }
select[size] option { padding: 9px 13px; border-bottom: 1px solid var(--rule); font-size: 14px; }

.row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  align-items: end;
}
.row > div { min-width: 0; }

.switch {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px;
  padding: 9px 0;
}

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-size: 12.5px;
  cursor: pointer;
  user-select: none;
  background: var(--paper);
  transition: all 100ms ease;
}
.chip input { accent-color: var(--ink); }
.chip:hover { border-color: var(--ink); }
.chip.active { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* ================ Buttons ================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font: inherit;
  font-weight: 500;
  font-size: 14.5px;
  padding: 12px 22px;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  border: 1px solid transparent;
  transition: opacity 120ms ease, background-color 120ms ease, border-color 120ms ease;
}
.btn.primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.btn.primary:hover { opacity: 0.9; }
.btn.ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--rule);
}
.btn.ghost:hover { border-color: var(--ink); }

.btn-submit {
  margin-top: 28px;
  width: 100%;
  padding: 14px 22px;
  font-size: 15px;
}

/* legacy support */
button.primary { @extend .btn; }

/* ================ Output panel ================ */
.empty {
  height: 100%;
  min-height: 360px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: var(--slate);
  gap: 14px;
}
.empty-mark { width: 64px; height: auto; opacity: 0.4; }
.empty p { margin: 0; font-size: 16px; }

.decision { display: flex; flex-direction: column; gap: 22px; }

.decision-head .label {
  font-size: 11px; letter-spacing: 0.1em; color: var(--slate);
  text-transform: uppercase; font-weight: 500;
}
.decision-head h2 {
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 500; margin: 6px 0 10px;
  letter-spacing: -0.015em;
}
.decision-head p {
  margin: 0; color: var(--ink); max-width: 60ch;
  font-size: 15px; line-height: 1.55;
}

.badges { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.badge {
  font-size: 11px; letter-spacing: 0.06em;
  border: 1px solid var(--rule);
  color: var(--slate);
  background: var(--paper);
  padding: 4px 9px;
  border-radius: 2px;
  font-weight: 500;
}
.badge.stale { color: var(--rubric); border-color: var(--rubric); }
.badge.verify { color: var(--ink); border-color: var(--ink); background: var(--paper); }
.badge.denied { color: var(--rubric); border-color: var(--rubric); background: var(--paper); }

.card {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 22px 24px;
}
.card h3 {
  margin: 0 0 14px;
  font-size: 11px; font-weight: 500; color: var(--slate);
  letter-spacing: 0.1em; text-transform: uppercase;
}

/* Criteria list — ONLY rubric red on a failing criterion */
.criteria { display: flex; flex-direction: column; gap: 10px; margin: 0; padding: 0; list-style: none; }
.criteria li {
  border-left: 3px solid var(--rule);
  padding: 10px 16px;
  background: var(--paper);
  position: relative;
}
.criteria li.miss    { border-left-color: var(--rubric); }
.criteria li.unknown { border-left-color: var(--slate); }
.criteria .lbl { font-weight: 500; font-size: 14px; display: block; padding-right: 90px; }
.criteria .detail { color: var(--slate); font-size: 13px; margin-top: 3px; display: block; }
.criteria .status {
  font-size: 11px; letter-spacing: 0.06em; color: var(--slate);
  text-transform: uppercase; font-weight: 500;
  position: absolute; right: 14px; top: 10px;
}
.criteria li.miss .status { color: var(--rubric); }

/* Documentation checklist */
.doc-list { margin: 0; padding: 0; list-style: none; }
.doc-list li {
  padding: 9px 0;
  border-bottom: 1px solid var(--rule);
  font-size: 14px;
}
.doc-list li:last-child { border-bottom: 0; }

/* Policy citation */
.citation { display: grid; gap: 6px; }
.citation .title { font-weight: 500; font-size: 15px; }
.citation .meta { font-size: 12.5px; color: var(--slate); }
.citation a { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }

.actions { display: flex; gap: 10px; margin-top: 4px; }

/* ICD multi-select */
.icd-list {
  max-height: 200px; overflow: auto;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--paper);
  margin-top: 6px;
}
.icd-list .item {
  padding: 8px 12px;
  border-bottom: 1px solid var(--rule);
  cursor: pointer;
  font-size: 13.5px;
  display: flex; gap: 12px; align-items: baseline;
}
.icd-list .item:last-child { border-bottom: 0; }
.icd-list .item:hover { background: var(--linen); }
.icd-list .item .code { font-weight: 500; font-family: "JetBrains Mono", ui-monospace, Menlo, monospace; min-width: 70px; }
.icd-list .item .desc { color: var(--slate); }

.icd-selected { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.icd-selected .chip.picked {
  background: var(--ink); color: var(--paper); border-color: var(--ink);
}
.icd-selected .chip.picked .code { font-family: "JetBrains Mono", ui-monospace, Menlo, monospace; }
.icd-selected .chip.picked .x { margin-left: 8px; opacity: 0.6; cursor: pointer; }

/* ================ Footer ================ */
.footer {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  padding: 18px var(--pad-x);
  border-top: 1px solid var(--rule);
  background: var(--paper);
}

/* ================ Toast ================ */
.toast {
  position: fixed; bottom: 20px; right: 20px;
  background: var(--ink); color: var(--paper);
  padding: 10px 14px; border-radius: var(--radius);
  font-size: 13px; box-shadow: 0 4px 16px rgba(0,0,0,0.15);
  opacity: 0; transform: translateY(10px); transition: opacity 160ms ease, transform 160ms ease;
  pointer-events: none;
  z-index: 100;
}
.toast.show { opacity: 1; transform: translateY(0); }

/* ================ Print ================ */
@media print {
  .topbar, .nav, .footer, .disclaimer, button, .panel.inputs, #splash { display: none; }
  .panel.output { background: var(--paper); padding: 0; }
  .route[hidden] { display: none; }
  .route { display: block !important; }
}