/* ═══════════════════════════════════════════════════════════════
   PEAK APTP Field Reference — single stylesheet
   Designed for: cold/gloved hands, low dexterity, outdoor sunlight,
   one-handed phone operation, 320px → 1920px viewports.
   Brand: Navy #13212A, Red #E30707, Mountain blue #A9C8D9
   ═══════════════════════════════════════════════════════════════ */

:root {
  --c-navy:       #13212A;
  --c-red:        #E30707;
  --c-blue:       #A9C8D9;
  --c-blue-light: #E6F0F6;
  --c-white:      #FFFFFF;
  --c-text:       #13212A;
  --c-text-soft:  #4A5862;
  --c-bg:         #FFFFFF;
  --c-bg-soft:    #F4F6F8;
  --c-border:     #C8D0D6;
  --c-go:         #1B7A2F;
  --c-go-bg:      #E6F4EA;
  --c-stop:       #C61B17;
  --c-stop-bg:    #FCEAE9;
  --c-warn:       #B8860B;
  --c-warn-bg:    #FFF4D6;
  --c-pccp:       #E8620E;
  --c-pccp-bg:    #FFE9D6;
  --c-pccp-text:  #A33F05;

  --tap-min: 88px;
  --gutter: 16px;
  --radius: 12px;
  --font-base: 18px;
  --font-lg: 24px;
  --font-xl: 32px;
  --shadow: 0 2px 8px rgba(19, 33, 42, 0.10);
}

/* Larger-text mode (toggled by user) */
:root.text-lg {
  --font-base: 22px;
  --font-lg: 30px;
  --font-xl: 40px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
html { font-size: var(--font-base); }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.45;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-text-size-adjust: 100%;
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  min-height: 100vh;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

/* Skip link for screen readers */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--c-navy);
  color: var(--c-white);
  padding: 12px 16px;
  text-decoration: none;
  z-index: 999;
}
.skip-link:focus { top: 0; }

/* ──────────────── HEADER ──────────────── */
.app-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--c-navy);
  color: var(--c-white);
  position: sticky;
  top: 0;
  z-index: 10;
  min-height: 64px;
}

.header-btn {
  background: transparent;
  border: 2px solid transparent;
  color: var(--c-white);
  font: inherit;
  font-weight: 600;
  padding: 12px;
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 56px;
  min-width: 56px;
}
.header-btn:focus { outline: 3px solid var(--c-blue); outline-offset: 2px; }
.header-btn:active { background: rgba(255,255,255,0.15); }
.header-btn[hidden] { display: none; }

.header-btn--back svg { width: 24px; height: 24px; }
.header-btn--back span { display: none; }
@media (min-width: 480px) {
  .header-btn--back span { display: inline; }
}

.header-btn--text { font-size: 1.1rem; }
.text-size-icon { font-weight: 800; }

.header-title {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--c-white);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  justify-content: center;
}
.header-title:focus { outline: 3px solid var(--c-blue); outline-offset: 2px; border-radius: 6px; }
.header-logo {
  height: 40px;
  width: auto;
  background: var(--c-white);
  padding: 4px 6px;
  border-radius: 6px;
}
.header-title-text {
  display: none;
}
@media (min-width: 600px) {
  .header-title-text { display: inline; }
}

/* ──────────────── MAIN ──────────────── */
.app-main {
  flex: 1;
  padding: var(--gutter);
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  outline: none;
}
.app-main:focus { outline: none; }

.view-title {
  font-size: var(--font-xl);
  margin: 0 0 8px 0;
  color: var(--c-navy);
  line-height: 1.1;
}
.view-subtitle {
  color: var(--c-text-soft);
  margin: 0 0 20px 0;
  font-size: 1rem;
}

/* ──────────────── HOME — protocol grid ──────────────── */
.home-intro {
  background: var(--c-blue-light);
  border-left: 6px solid var(--c-navy);
  padding: 12px 16px;
  margin-bottom: 20px;
  border-radius: 4px;
  font-size: 0.95rem;
}
.home-intro strong { color: var(--c-red); }

.category-section {
  margin: 24px 0 16px 0;
}
.category-label {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 0 0 10px 0;
  padding-left: 4px;
}

.tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}

.tile {
  background: var(--c-white);
  border: 2px solid var(--c-border);
  border-left: 6px solid var(--c-navy);
  border-radius: var(--radius);
  padding: 16px 18px;
  text-decoration: none;
  color: var(--c-text);
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: var(--tap-min);
  transition: transform 0.05s, border-color 0.15s, background 0.15s;
}
.tile:focus,
.tile:hover { background: var(--c-bg-soft); border-color: var(--c-navy); outline: none; }
.tile:focus { outline: 3px solid var(--c-blue); outline-offset: 2px; }
.tile:active { transform: scale(0.99); }

.tile-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--c-navy);
  display: flex;
  align-items: center;
  gap: 8px;
}
.tile-summary {
  color: var(--c-text-soft);
  font-size: 0.95rem;
}
.tile-aliases {
  font-size: 0.85rem;
  color: var(--c-text-soft);
  font-style: italic;
}
.tile-badge {
  display: inline-block;
  background: var(--c-pccp-bg);
  color: var(--c-pccp-text);
  border: 1px solid var(--c-pccp);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Quick reference & Forms tiles */
.tile-grid--ref .tile {
  border-left-color: var(--c-blue);
}

/* ──────────────── PROTOCOL VIEW ──────────────── */
.section {
  margin: 24px 0;
}
.section-title {
  font-size: var(--font-lg);
  margin: 0 0 12px 0;
  color: var(--c-navy);
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-title-icon {
  display: inline-flex;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  color: var(--c-white);
  font-size: 1rem;
  font-weight: 700;
  flex-shrink: 0;
}
.section--indications .section-title-icon { background: var(--c-go); }
.section--contra .section-title-icon { background: var(--c-stop); }
.section--conditions .section-title-icon { background: var(--c-navy); }
.section--notes .section-title-icon { background: var(--c-warn); color: var(--c-navy); }
.section--dose .section-title-icon { background: var(--c-blue); color: var(--c-navy); }

.criteria-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.criteria-list li {
  background: var(--c-white);
  border: 2px solid var(--c-border);
  border-radius: 8px;
  padding: 12px 14px 12px 44px;
  position: relative;
  font-size: 1rem;
  line-height: 1.4;
}
.criteria-list li::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 14px;
  width: 20px;
  height: 20px;
  border-radius: 4px;
  border: 2px solid currentColor;
}

.section--indications .criteria-list li {
  border-left: 6px solid var(--c-go);
  background: var(--c-go-bg);
}
.section--indications .criteria-list li::before { color: var(--c-go); }

.section--contra .criteria-list li {
  border-left: 6px solid var(--c-stop);
  background: var(--c-stop-bg);
}
.section--contra .criteria-list li::before { color: var(--c-stop); }

.section--conditions .criteria-list li {
  border-left: 6px solid var(--c-navy);
  background: var(--c-bg-soft);
}
.section--conditions .criteria-list li::before { color: var(--c-navy); }

/* Note callouts */
.note {
  background: var(--c-warn-bg);
  border-left: 6px solid var(--c-warn);
  padding: 12px 14px;
  border-radius: 8px;
  margin-bottom: 8px;
  font-size: 1rem;
  line-height: 1.4;
}
.note--stop {
  background: var(--c-stop-bg);
  border-left-color: var(--c-stop);
  font-weight: 600;
}
.note--info {
  background: var(--c-blue-light);
  border-left-color: var(--c-navy);
}
.note strong { color: var(--c-navy); }

/* PCCP card */
.pccp-card {
  background: var(--c-pccp-bg);
  border: 3px solid var(--c-pccp);
  border-radius: var(--radius);
  padding: 16px;
  margin: 16px 0;
}
.pccp-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 8px 0;
  color: var(--c-navy);
  display: flex;
  align-items: center;
  gap: 8px;
}
.pccp-call-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  background: var(--c-go);
  color: var(--c-white);
  text-decoration: none;
  font-weight: 800;
  font-size: 1.25rem;
  padding: 18px 16px;
  border-radius: var(--radius);
  border: 3px solid transparent;
  margin-top: 12px;
  min-height: var(--tap-min);
}
.pccp-call-btn:focus,
.pccp-call-btn:hover { background: #155F25; outline: none; }
.pccp-call-btn:focus { outline: 3px solid var(--c-blue); outline-offset: 2px; }
.pccp-script {
  background: var(--c-white);
  border-radius: 8px;
  padding: 10px 14px;
  margin-top: 12px;
  font-size: 0.95rem;
}
.pccp-script ol { margin: 4px 0 0 20px; padding: 0; }

/* Dose tables center their cells under the column headers so short values
   like "0.3 ml" don't sit jammed to the left under a much wider header. */
.section--dose .data-table th,
.section--dose .data-table td { text-align: center; }

/* Tables (dose, sizing, criteria matrix) */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  background: var(--c-white);
  border: 2px solid var(--c-border);
  border-radius: 8px;
  overflow: hidden;
}
.data-table th, .data-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--c-border);
}
.data-table th {
  background: var(--c-navy);
  color: var(--c-white);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
/* Dose-table headers keep natural case so units read "mg / ml" (not "MG / ML")
   and "Age (years)" (not "AGE (YEARS)"); top-align for multi-line headers. */
.section--dose .data-table th {
  text-transform: none;
  letter-spacing: 0;
  vertical-align: top;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 8px;
}
.data-table--matrix .cell-yes {
  background: var(--c-stop-bg);
  color: var(--c-stop);
  font-weight: 700;
  text-align: center;
}
.data-table--matrix .cell-na {
  text-align: center;
  color: var(--c-text-soft);
}

/* Procedure step list */
.steps-list {
  list-style: none;
  counter-reset: step;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.steps-list li {
  counter-increment: step;
  position: relative;
  padding: 14px 14px 14px 56px;
  background: var(--c-white);
  border: 2px solid var(--c-border);
  border-left: 6px solid var(--c-navy);
  border-radius: 8px;
  font-size: 1rem;
  line-height: 1.4;
}
.steps-list li::before {
  content: counter(step);
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  background: var(--c-navy);
  color: var(--c-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
}

/* DRIEDF mnemonic block */
.mnemonic {
  background: var(--c-stop-bg);
  border: 3px solid var(--c-stop);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin: 12px 0;
}
.mnemonic-title {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 4px;
  color: var(--c-stop);
  margin: 0 0 8px 0;
}
.mnemonic-list { list-style: none; padding: 0; margin: 0; }
.mnemonic-list li {
  display: flex;
  gap: 10px;
  padding: 6px 0;
  border-bottom: 1px solid rgba(198, 27, 23, 0.2);
}
.mnemonic-list li:last-child { border-bottom: none; }
.mnemonic-letter {
  background: var(--c-stop);
  color: var(--c-white);
  width: 32px;
  height: 32px;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  flex-shrink: 0;
}

/* Source links */
.source-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}
.source-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--c-bg-soft);
  border: 2px solid var(--c-border);
  border-radius: 6px;
  padding: 8px 12px;
  text-decoration: none;
  color: var(--c-text);
  font-size: 0.9rem;
  font-weight: 600;
}
.source-link:focus,
.source-link:hover { border-color: var(--c-navy); background: var(--c-white); outline: none; }
.source-link:focus { outline: 3px solid var(--c-blue); outline-offset: 2px; }

/* ──────────────── FOOTER ──────────────── */
.app-footer {
  background: var(--c-bg-soft);
  border-top: 1px solid var(--c-border);
  padding: 12px 16px;
  font-size: 0.8rem;
  color: var(--c-text-soft);
  text-align: center;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  align-items: center;
}
.footer-sep { color: var(--c-border); }
.footer-version { font-weight: 700; color: var(--c-navy); }
.footer-link {
  color: var(--c-navy);
  text-decoration: none;
  font-weight: 600;
}
.footer-link:focus,
.footer-link:hover { text-decoration: underline; }

/* Install banner */
.install-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--c-navy);
  color: var(--c-white);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 100;
  box-shadow: 0 -2px 8px rgba(0,0,0,0.2);
}
.install-banner[hidden] { display: none; }
.install-banner > span { flex: 1; font-size: 0.95rem; }
.install-btn {
  background: var(--c-red);
  color: var(--c-white);
  border: none;
  padding: 10px 18px;
  border-radius: 6px;
  font-weight: 700;
  cursor: pointer;
  font-size: 1rem;
  min-height: 44px;
}
.install-dismiss {
  background: transparent;
  color: var(--c-white);
  border: none;
  font-size: 1.5rem;
  width: 36px;
  height: 36px;
  cursor: pointer;
}

/* About view */
.about-card {
  background: var(--c-bg-soft);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}
.about-card h3 { margin-top: 0; }

/* High contrast & motion preferences */
@media (prefers-contrast: more) {
  :root {
    --c-border: #000;
    --c-text-soft: #000;
  }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

/* ──────────────── METHOXYFLURANE WIZARD ──────────────── */
/* Step-by-step eligibility flow. Big tap targets for gloved hands.
   Halt screen is unmissable red; pass screen unlocks the call button. */
.section--wizard {
  background: var(--c-blue-light);
  border: 3px solid var(--c-navy);
  border-radius: var(--radius);
  padding: 16px;
  margin: 16px 0 24px 0;
}
.section--wizard .section-title { color: var(--c-navy); }
.section--wizard .section-title-icon { background: var(--c-navy); }

.wizard-progress {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--c-text-soft);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}
.wizard-progress-kind {
  padding: 4px 10px;
  border-radius: 999px;
  border: 2px solid;
  font-size: 0.75rem;
}
.wizard-progress-kind--go    { color: var(--c-go);   border-color: var(--c-go);   background: var(--c-go-bg); }
.wizard-progress-kind--stop  { color: var(--c-stop); border-color: var(--c-stop); background: var(--c-stop-bg); }
.wizard-progress-kind--navy  { color: var(--c-navy); border-color: var(--c-navy); background: var(--c-white); }

.wizard-progress-bar {
  height: 8px;
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: 999px;
  margin-bottom: 14px;
  overflow: hidden;
}
.wizard-progress-bar-fill {
  height: 100%;
  background: var(--c-navy);
  transition: width 0.2s ease-out;
}

.wizard-step-card {
  background: var(--c-white);
  border: 2px solid var(--c-border);
  border-left: 8px solid var(--c-navy);
  border-radius: var(--radius);
  padding: 18px 18px 14px 18px;
  margin-bottom: 12px;
}
.wizard-step-card--go   { border-left-color: var(--c-go); }
.wizard-step-card--stop { border-left-color: var(--c-stop); }
.wizard-step-card--navy { border-left-color: var(--c-navy); }

.wizard-step-text {
  font-size: 1.2rem;
  line-height: 1.4;
  margin: 0 0 14px 0;
  color: var(--c-text);
  font-weight: 600;
}

.wizard-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.wizard-btn {
  font: inherit;
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: 1px;
  padding: 22px 16px;
  border-radius: var(--radius);
  cursor: pointer;
  min-height: var(--tap-min);
  border: 3px solid;
  background: var(--c-white);
  transition: transform 0.05s, background 0.15s, color 0.15s;
}
.wizard-btn:active { transform: scale(0.98); }
.wizard-btn:focus  { outline: 3px solid var(--c-blue); outline-offset: 2px; }
/* YES/NO stay in a light tint with a dark outline at rest, on hover, and on
   focus — neither option is visually "preferred." They only fill solid
   (light up) while actively pressed. */
.wizard-btn--yes {
  background: var(--c-go-bg);
  color: var(--c-go);
  border-color: var(--c-go);
}
.wizard-btn--yes:active {
  background: var(--c-go);
  color: var(--c-white);
}
.wizard-btn--no {
  background: var(--c-stop-bg);
  color: var(--c-stop);
  border-color: var(--c-stop);
}
.wizard-btn--no:active {
  background: var(--c-stop);
  color: var(--c-white);
}

.wizard-reset-btn {
  display: block;
  width: 100%;
  margin-top: 12px;
  background: transparent;
  border: 2px solid var(--c-border);
  color: var(--c-text-soft);
  font: inherit;
  font-weight: 600;
  padding: 14px;
  border-radius: 8px;
  cursor: pointer;
  min-height: 48px;
}
.wizard-reset-btn:hover, .wizard-reset-btn:focus {
  background: var(--c-bg-soft);
  color: var(--c-navy);
  border-color: var(--c-navy);
  outline: none;
}
.wizard-reset-btn:focus { outline: 3px solid var(--c-blue); outline-offset: 2px; }
.wizard-reset-btn--prominent {
  margin-top: 16px;
  background: var(--c-white);
  border-color: var(--c-stop);
  color: var(--c-stop);
  font-weight: 700;
}
.wizard-reset-btn--prominent:hover, .wizard-reset-btn--prominent:focus {
  background: var(--c-stop);
  border-color: var(--c-stop);
  color: var(--c-white);
}

/* HALT screen — unmissable */
.wizard-halt {
  background: var(--c-stop-bg);
  border: 4px solid var(--c-stop);
  border-radius: var(--radius);
  padding: 22px;
  text-align: center;
}
.wizard-halt-icon {
  font-size: 3rem;
  line-height: 1;
  margin-bottom: 6px;
}
.wizard-halt-title {
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--c-stop);
  margin: 0 0 14px 0;
  text-transform: uppercase;
  letter-spacing: 1px;
  line-height: 1.15;
}
.wizard-halt-reason {
  background: var(--c-white);
  border-radius: 8px;
  padding: 14px 16px;
  margin: 14px 0;
  text-align: left;
  font-size: 1rem;
  line-height: 1.4;
  border-left: 6px solid var(--c-stop);
}
.wizard-halt-reason p { margin: 6px 0 0 0; }
.wizard-halt-list {
  text-align: left;
  margin: 14px 0;
  padding-left: 22px;
  font-size: 1rem;
  line-height: 1.6;
}
.wizard-halt-list li { margin-bottom: 6px; }
.wizard-halt-list strong { color: var(--c-stop); }

/* PASS screen — unlocks call button */
.wizard-pass {
  background: var(--c-go-bg);
  border: 4px solid var(--c-go);
  border-radius: var(--radius);
  padding: 22px;
  text-align: center;
}
.wizard-pass-icon {
  width: 64px;
  height: 64px;
  background: var(--c-go);
  color: var(--c-white);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 10px;
}
.wizard-pass-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--c-go);
  margin: 0 0 12px 0;
}
.pccp-call-btn--prominent {
  flex-direction: column;
  gap: 4px;
  font-size: 1.4rem;
  padding: 22px 16px;
}
.pccp-call-btn-num { font-size: 1.15rem; }
.wizard-pass-fallback {
  font-size: 0.9rem;
  color: var(--c-text-soft);
  margin: 14px 0 0 0;
}
.wizard-pass .pccp-script { text-align: left; margin-top: 12px; }

/* Print: clean output for PDFs / handouts */
@media print {
  .app-header, .app-footer, .install-banner, #back-btn, #text-size-btn { display: none !important; }
  .app-main { padding: 0; max-width: none; }
  .tile { break-inside: avoid; }
  .pccp-call-btn { background: none; color: var(--c-navy); border: 2px solid var(--c-navy); }
}