/*
 * CAH Design System - composed blocks.
 * Larger page-level components: hero, pathway, process, timeline, cards,
 * Case Check. All built from the same tokens as the component layer.
 */

/* ==================================================================
 * Home hero
 * ================================================================== */
.cah-hero {
  position: relative;
  background: var(--cah-surface-invert);
  color: var(--cah-text-invert);
  overflow: hidden;
  padding-block: clamp(56px, 7vw, 104px) clamp(56px, 7vw, 96px);
}
/* A single restrained depth cue, not a decorative gradient wash. */
.cah-hero::before {
  content: "";
  position: absolute;
  inset: -40% 30% auto -10%;
  height: 620px;
  background: radial-gradient(closest-side, rgba(17,154,164,.16), transparent 70%);
  pointer-events: none;
}
.cah-hero__inner { position: relative; display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr); gap: clamp(40px, 5vw, 80px); align-items: center; }
@media (max-width: 1024px) { .cah-hero__inner { grid-template-columns: minmax(0,1fr); gap: 48px; } }

.cah-hero h1, .cah-hero h2 { color: #fff; }
.cah-hero__title { font-size: var(--cah-fs-display); line-height: var(--cah-lh-tight); letter-spacing: var(--cah-ls-display); color: #fff; margin: 0 0 20px; text-wrap: balance; }
.cah-hero__lede { font-size: var(--cah-fs-body-lg); line-height: var(--cah-lh-relaxed); color: var(--cah-text-invert-muted); max-width: 52ch; margin: 0 0 32px; }
.cah-hero__actions { display: flex; flex-wrap: wrap; gap: var(--cah-space-3); margin-bottom: 32px; }
.cah-hero__trust { padding-top: 26px; border-top: 1px solid var(--cah-border-invert); }

/* ==================================================================
 * Pathway diagram - the hero's signature visual
 * Accident to Options, as a sequence that reads as organisation.
 * ================================================================== */
.cah-path { position: relative; }
.cah-path__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; counter-reset: cah-path; }

.cah-path__item { position: relative; display: grid; grid-template-columns: 52px minmax(0,1fr); gap: 18px; align-items: start; padding-bottom: 26px; }
.cah-path__item:last-child { padding-bottom: 0; }

/* The connector. Drawn behind the markers, filled progressively. */
.cah-path__item:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 25px; top: 46px; bottom: 6px;
  width: 2px;
  background: rgba(255,255,255,.14);
}
.cah-path__item:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 25px; top: 46px;
  width: 2px; height: 0;
  background: linear-gradient(180deg, var(--cah-teal-600), rgba(25,180,190,.25));
  transition: height var(--cah-dur-xslow) var(--cah-ease-out);
  transition-delay: var(--cah-path-delay, 0ms);
}
.cah-path__item.is-lit:not(:last-child)::after { height: calc(100% - 52px); }

.cah-path__marker {
  position: relative; z-index: 1;
  width: 52px; height: 52px; border-radius: 16px;
  display: grid; place-items: center;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.14);
  color: var(--cah-teal-600);
  transition: background-color var(--cah-dur) var(--cah-ease-out),
              border-color var(--cah-dur) var(--cah-ease-out),
              color var(--cah-dur) var(--cah-ease-out),
              transform var(--cah-dur-slow) var(--cah-ease-spring),
              opacity var(--cah-dur-slow) var(--cah-ease-out);
  transition-delay: var(--cah-path-delay, 0ms);
}
html.cah-js .cah-path__marker { opacity: 0; transform: translateY(8px) scale(.94); }
.cah-path__item.is-lit .cah-path__marker {
  opacity: 1; transform: none;
  background: rgba(25,180,190,.14);
  border-color: rgba(25,180,190,.42);
  color: #fff;
}
.cah-path__step { font-size: var(--cah-fs-caption); letter-spacing: var(--cah-ls-eyebrow); text-transform: uppercase; color: var(--cah-teal-600); font-weight: var(--cah-fw-semibold); display: block; margin-bottom: 3px; }
.cah-path__label { font-size: var(--cah-fs-h4); font-weight: var(--cah-fw-semibold); color: #fff; margin: 0 0 3px; line-height: 1.3; }
.cah-path__desc { font-size: var(--cah-fs-small); color: var(--cah-text-invert-muted); margin: 0; max-width: 40ch; }
.cah-path__body { padding-top: 4px; opacity: 0; transform: translateY(8px); transition: opacity var(--cah-dur-slow) var(--cah-ease-out), transform var(--cah-dur-slow) var(--cah-ease-out); transition-delay: var(--cah-path-delay, 0ms); }
html:not(.cah-js) .cah-path__body { opacity: 1; transform: none; }
.cah-path__item.is-lit .cah-path__body { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html.cah-js .cah-path__marker,
  .cah-path__body { opacity: 1 !important; transform: none !important; transition: none !important; }
  .cah-path__item:not(:last-child)::after { transition: none; }
}

/* ==================================================================
 * Accident type cards
 * ================================================================== */
.cah-typecard {
  position: relative;
  display: flex; flex-direction: column; gap: 14px;
  padding: var(--cah-space-6);
  background: var(--cah-surface);
  border: 1px solid var(--cah-border-soft);
  border-radius: var(--cah-radius-lg);
  text-decoration: none;
  min-height: 100%;
  transition: transform var(--cah-dur) var(--cah-ease-out), box-shadow var(--cah-dur) var(--cah-ease-out), border-color var(--cah-dur) var(--cah-ease-out);
  overflow: hidden;
}
.cah-typecard::before {
  content: "";
  position: absolute; left: 0; right: 0; top: 0; height: 3px;
  background: linear-gradient(90deg, var(--cah-secondary), var(--cah-teal-600));
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--cah-dur-slow) var(--cah-ease-out);
}
.cah-typecard:hover { transform: translateY(-3px); box-shadow: var(--cah-shadow-lg); border-color: var(--cah-border); }
.cah-typecard:hover::before { transform: scaleX(1); }
.cah-typecard:focus-within { outline: 3px solid var(--cah-focus-ring); outline-offset: 2px; }
.cah-typecard__icon {
  width: 48px; height: 48px; border-radius: 14px;
  display: grid; place-items: center;
  background: var(--cah-secondary-tint);
  color: var(--cah-secondary-strong);
  flex: none;
}
.cah-typecard__title { font-size: var(--cah-fs-h4); font-weight: var(--cah-fw-semibold); color: var(--cah-primary); margin: 0; }
.cah-typecard__desc { font-size: var(--cah-fs-small); color: var(--cah-text-muted); margin: 0; }
.cah-typecard__more { margin-top: auto; padding-top: 6px; font-size: var(--cah-fs-small); font-weight: var(--cah-fw-semibold); color: var(--cah-secondary-strong); display: inline-flex; align-items: center; gap: 6px; }
.cah-typecard:hover .cah-typecard__more .cah-icon { transform: translateX(3px); }
.cah-typecard__more .cah-icon { transition: transform var(--cah-dur) var(--cah-ease-out); }
@media (prefers-reduced-motion: reduce) {
  .cah-typecard:hover { transform: none; }
  .cah-typecard:hover .cah-typecard__more .cah-icon { transform: none; }
}

/* ==================================================================
 * Process (numbered, for How It Works)
 * ================================================================== */
.cah-process { display: grid; gap: var(--cah-gap-lg); grid-template-columns: repeat(4, minmax(0,1fr)); counter-reset: cah-proc; }
@media (max-width: 1024px) { .cah-process { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 560px) { .cah-process { grid-template-columns: minmax(0,1fr); } }
.cah-process__step { position: relative; padding-top: 22px; border-top: 2px solid var(--cah-border); }
.cah-process__step::before {
  content: ""; position: absolute; top: -2px; left: 0; height: 2px; width: 0;
  background: var(--cah-secondary);
  transition: width var(--cah-dur-xslow) var(--cah-ease-out);
  transition-delay: var(--cah-reveal-delay, 0ms);
}
.cah-process__step.is-visible::before { width: 100%; }
.cah-process__num { font-size: var(--cah-fs-caption); font-weight: var(--cah-fw-bold); color: var(--cah-secondary-strong); letter-spacing: var(--cah-ls-eyebrow); display: block; margin-bottom: 10px; font-variant-numeric: tabular-nums; }
.cah-process__title { font-size: var(--cah-fs-h4); margin-bottom: 8px; }
.cah-process__body { font-size: var(--cah-fs-small); color: var(--cah-text-muted); margin: 0; }
@media (prefers-reduced-motion: reduce) { .cah-process__step::before { transition: none; width: 100%; } }

/* ==================================================================
 * Case Check
 * ================================================================== */
.cah-cc {
  background: var(--cah-surface);
  border: 1px solid var(--cah-border-soft);
  border-radius: var(--cah-radius-xl);
  box-shadow: var(--cah-shadow-lg);
  overflow: hidden;
  max-width: 640px;
  margin-inline: auto;
}
.cah-cc__head { padding: var(--cah-space-6) var(--cah-space-8) 0; }
.cah-cc__eyebrow { display: flex; align-items: center; justify-content: space-between; gap: var(--cah-space-4); margin-bottom: 14px; }
.cah-cc__label { font-size: var(--cah-fs-caption); letter-spacing: var(--cah-ls-eyebrow); text-transform: uppercase; font-weight: var(--cah-fw-semibold); color: var(--cah-secondary-strong); }
.cah-cc__count { font-size: var(--cah-fs-caption); color: var(--cah-text-muted); font-variant-numeric: tabular-nums; }
.cah-cc__progress { height: 4px; border-radius: 999px; background: var(--cah-bg-alt); overflow: hidden; }
.cah-cc__bar { height: 100%; width: 0; border-radius: inherit; background: linear-gradient(90deg, var(--cah-secondary), var(--cah-teal-600)); transition: width var(--cah-dur-slow) var(--cah-ease-out); }
.cah-cc__body { padding: var(--cah-space-6) var(--cah-space-8) var(--cah-space-8); }
@media (max-width: 560px) {
  .cah-cc { border-radius: var(--cah-radius-lg); }
  .cah-cc__head { padding-inline: var(--cah-space-5); }
  .cah-cc__body { padding-inline: var(--cah-space-5); }
}
.cah-cc__step { }
.cah-cc__step[hidden] { display: none; }
.cah-cc__legend { font-size: var(--cah-fs-h3); font-weight: var(--cah-fw-bold); color: var(--cah-primary); line-height: 1.25; letter-spacing: var(--cah-ls-heading); margin: 0 0 8px; padding: 0; border: 0; display: block; width: 100%; }
.cah-cc__help { font-size: var(--cah-fs-small); color: var(--cah-text-muted); margin: 0 0 22px; }
.cah-cc__options { display: grid; gap: 10px; margin-bottom: 8px; }
.cah-cc__fields { display: grid; gap: 0; }
.cah-cc__row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
@media (max-width: 520px) { .cah-cc__row { grid-template-columns: 1fr; } }
.cah-cc__nav { display: flex; align-items: center; justify-content: space-between; gap: var(--cah-space-4); margin-top: var(--cah-space-6); padding-top: var(--cah-space-5); border-top: 1px solid var(--cah-border-soft); }
.cah-cc__back { background: none; border: 0; color: var(--cah-text-muted); font-weight: var(--cah-fw-medium); cursor: pointer; padding: 10px 4px; min-height: var(--cah-tap-min); display: inline-flex; align-items: center; gap: 6px; }
.cah-cc__back:hover { color: var(--cah-primary); }
.cah-cc__back[hidden] { visibility: hidden; display: inline-flex; }
/* Honeypot. Hidden without using a large negative offset, which can extend
   the document box, and hidden from assistive technology as well as sight so
   a screen reader user is never invited to fill it in. */
.cah-cc__hp {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
  opacity: 0;
  pointer-events: none;
}
.cah-cc__status { margin-top: 16px; }
.cah-cc__result { text-align: center; padding: var(--cah-space-8) var(--cah-space-4); }
.cah-cc__result-icon { width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; margin: 0 auto var(--cah-space-5); }
.cah-cc__result-icon--ok { background: var(--cah-success-tint); color: var(--cah-success); }
.cah-cc__result-icon--err { background: var(--cah-error-tint); color: var(--cah-error); }
.cah-cc__ref { font-family: var(--cah-font-mono); font-size: var(--cah-fs-small); background: var(--cah-bg-alt); padding: 6px 12px; border-radius: var(--cah-radius-sm); display: inline-block; margin-top: 10px; }

/* ==================================================================
 * Article / resource cards
 * ================================================================== */
.cah-artcard { display: flex; flex-direction: column; gap: 10px; padding: var(--cah-space-6); background: var(--cah-surface); border: 1px solid var(--cah-border-soft); border-radius: var(--cah-radius-lg); height: 100%; position: relative; transition: box-shadow var(--cah-dur) var(--cah-ease-out), transform var(--cah-dur) var(--cah-ease-out); }
.cah-artcard:hover { box-shadow: var(--cah-shadow-md); transform: translateY(-2px); }
.cah-artcard:focus-within { outline: 3px solid var(--cah-focus-ring); outline-offset: 2px; }
.cah-artcard__meta { display: flex; flex-wrap: wrap; gap: 10px; font-size: var(--cah-fs-caption); color: var(--cah-text-muted); }
.cah-artcard__title { font-size: var(--cah-fs-h4); margin: 0; }
.cah-artcard__title a { color: var(--cah-primary); text-decoration: none; }
.cah-artcard__title a::after { content: ""; position: absolute; inset: 0; border-radius: inherit; }
.cah-artcard__excerpt { font-size: var(--cah-fs-small); color: var(--cah-text-muted); margin: 0; }
@media (prefers-reduced-motion: reduce) { .cah-artcard:hover { transform: none; } }


/* ==================================================================
 * Fact table - verified facts with their citations attached
 * ================================================================== */
.cah-facttable { width: 100%; border-collapse: collapse; font-size: var(--cah-fs-small); background: var(--cah-surface); }
.cah-facttable thead th {
  text-align: left; padding: 14px 16px;
  background: var(--cah-primary); color: #fff;
  font-weight: var(--cah-fw-semibold); font-size: var(--cah-fs-caption);
  letter-spacing: var(--cah-ls-eyebrow); text-transform: uppercase;
  white-space: nowrap;
}
.cah-facttable thead th:first-child { border-top-left-radius: var(--cah-radius-md); }
.cah-facttable thead th:last-child { border-top-right-radius: var(--cah-radius-md); }
.cah-facttable tbody th, .cah-facttable tbody td {
  padding: 16px; border-bottom: 1px solid var(--cah-border-soft);
  vertical-align: top; text-align: left;
}
.cah-facttable tbody th {
  font-weight: var(--cah-fw-semibold); color: var(--cah-primary);
  min-width: 190px;
}
.cah-facttable tbody tr:nth-child(even) { background: var(--cah-surface-alt); }
.cah-facttable tbody td strong { color: var(--cah-secondary-strong); font-size: var(--cah-fs-body); }
.cah-facttable__cite { display: block; font-weight: var(--cah-fw-regular); font-size: var(--cah-fs-caption); color: var(--cah-text-muted); margin-top: 4px; font-variant-numeric: tabular-nums; }
.cah-facttable__caveat {
  display: block; margin-top: 8px; padding-left: 12px;
  border-left: 2px solid var(--cah-amber-500);
  color: var(--cah-text-muted); font-size: var(--cah-fs-caption); line-height: 1.6;
}
@media (max-width: 640px) {
  .cah-facttable thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
  .cah-facttable tbody tr { display: block; border: 1px solid var(--cah-border-soft); border-radius: var(--cah-radius-md); margin-bottom: 14px; background: var(--cah-surface); }
  .cah-facttable tbody th, .cah-facttable tbody td { display: block; border-bottom: 0; padding: 12px 16px; min-width: 0; }
  .cah-facttable tbody th { padding-bottom: 4px; }
  .cah-facttable tbody td:first-of-type { padding-top: 0; }
}

/* Editorial layout: content with a contents rail */
.cah-article { display: grid; grid-template-columns: minmax(0,1fr) 260px; gap: clamp(32px, 5vw, 72px); align-items: start; }
.cah-article--left { grid-template-columns: 240px minmax(0,1fr); }
@media (max-width: 1024px) { .cah-article, .cah-article--left { grid-template-columns: minmax(0,1fr); } .cah-toc--sticky { position: static; } }
.cah-source__ext { display: inline-block; vertical-align: -2px; margin-left: 3px; }


/* ==================================================================
 * Interactive checklist
 * ================================================================== */
.cah-checktool { background: var(--cah-surface); border: 1px solid var(--cah-border-soft); border-radius: var(--cah-radius-lg); padding: var(--cah-space-6); box-shadow: var(--cah-shadow-xs); }
.cah-checktool__head { display: flex; align-items: center; justify-content: space-between; gap: var(--cah-space-4); flex-wrap: wrap; margin-bottom: 14px; }
.cah-checktool__progress { margin: 0; font-size: var(--cah-fs-small); font-weight: var(--cah-fw-semibold); color: var(--cah-primary); font-variant-numeric: tabular-nums; }
.cah-checktool__actions { display: flex; gap: 6px; }
.cah-checktool__bar { height: 6px; border-radius: 999px; background: var(--cah-bg-alt); overflow: hidden; margin-bottom: var(--cah-space-5); }
.cah-checktool__fill { height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--cah-secondary), var(--cah-teal-600)); transition: width var(--cah-dur) var(--cah-ease-out); }
.cah-checktool__list { list-style: none; margin: 0; padding: 0; }
.cah-checktool__item { display: flex; align-items: flex-start; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--cah-border-soft); min-height: var(--cah-tap-min); }
.cah-checktool__item:last-child { border-bottom: 0; }
.cah-checktool__item input { flex: none; width: 22px; height: 22px; margin-top: 1px; accent-color: var(--cah-secondary); cursor: pointer; }
.cah-checktool__item label { cursor: pointer; line-height: 1.5; transition: color var(--cah-dur) var(--cah-ease-out); }
.cah-checktool__item.is-done label { color: var(--cah-text-muted); text-decoration: line-through; text-decoration-color: var(--cah-neutral-400); }
.cah-checktool__note { margin: var(--cah-space-5) 0 0; padding-top: var(--cah-space-4); border-top: 1px solid var(--cah-border-soft); }
@media print {
  .cah-checktool__actions, .cah-checktool__bar { display: none; }
  .cah-checktool { border: 0; box-shadow: none; padding: 0; }
  .cah-checktool__item { break-inside: avoid; }
}