/* Mensara how-it-works section: shares tokens and site-* primitives with the
   marketing homepage (mensara_tokens.css, application.css), adds only the
   layout this section needs on top. */

/* Pages use the shared site/marketing header (_header.html.erb) for full-site
   nav consistency. The bordered segmented-control toggle style is canonical
   and lives in application.css's .surface-toggle rules; no page-specific
   override here; every surface (marketing home, how-it-works) renders and
   looks identical. */

.hiw-shell { width: min(100%, var(--site-content)); margin: 0 auto; padding: clamp(3rem, 8vw, 6rem) clamp(1.5rem, 5vw, 4rem) clamp(5rem, 10vw, 8rem); }
.hiw-subpage-shell { display: flex; flex-direction: column; align-items: stretch; }
.hiw-subpage-shell[hidden] { display: none; }
.hiw-subpage-shell .hiw-shell { flex: 1 1 auto; min-width: 0; max-width: 65rem; }
@media (min-width: 1280px) { .hiw-subpage-shell { flex-direction: row; align-items: flex-start; } }

.hiw-rail { display: none; flex: 0 0 15.25rem; position: sticky; top: 4.5rem; align-self: flex-start; padding: clamp(1.5rem, 3vw, 3rem) 0 2.5rem 1.75rem; }
@media (min-width: 1280px) { .hiw-rail { display: block; } }
.hiw-rail__title { font-family: var(--site-font-mono); font-size: 0.625rem; letter-spacing: 0.2em; color: var(--site-dim); padding-left: 0.8rem; }
.hiw-rail__groups { margin-top: 1rem; display: flex; flex-direction: column; gap: 1.1rem; }
.hiw-rail__group-label { font-family: var(--site-font-mono); font-size: 0.625rem; letter-spacing: 0.18em; color: var(--site-dim); padding-left: 0.8rem; }
.hiw-rail__rows { margin-top: 0.4rem; display: flex; flex-direction: column; }
.hiw-rail__row { display: grid; grid-template-columns: 1.25rem minmax(0, 1fr); gap: 0.5rem; align-items: baseline; padding: 0.5rem 0 0.5rem 0.75rem; border-left: 1px solid color-mix(in srgb, var(--site-violet) 22%, transparent); text-decoration: none; transition: background-color var(--site-motion-fast); }
.hiw-rail__n { font-family: var(--site-font-mono); font-size: 0.66rem; color: var(--site-dim); }
.hiw-rail__t { font-size: 0.875rem; line-height: 1.35; color: var(--site-muted); transition: color var(--site-motion-fast); }
.hiw-rail__row:hover .hiw-rail__t { color: var(--site-gold); }
.hiw-rail__row--current { border-left-color: var(--site-ember); background: color-mix(in srgb, var(--site-ember) 7%, transparent); }
.hiw-rail__row--current .hiw-rail__t { color: var(--site-bone); }
.hiw-rail__back { display: inline-block; margin: 1.5rem 0 0 0.8rem; font-family: var(--site-font-mono); font-size: 0.66rem; letter-spacing: 0.14em; color: var(--site-muted); text-decoration: none; }
.hiw-rail__back:hover, .hiw-rail__back:focus-visible { color: var(--site-bone); }

.hiw-drawer-wrap { margin: 0 clamp(1.5rem, 5vw, 4rem); }
@media (min-width: 1280px) { .hiw-drawer-wrap { display: none; } }
.hiw-drawer-toggle { appearance: none; display: flex; align-items: center; gap: 0.6rem; min-height: 2.75rem; background: transparent; border: 1px solid var(--site-line); border-radius: 0.25rem; padding: 0 0.9rem; cursor: pointer; font-family: var(--site-font-mono); font-size: 0.7rem; letter-spacing: 0.16em; color: var(--site-bone); margin-top: 0.9rem; }
.hiw-drawer-toggle:hover, .hiw-drawer-toggle:focus-visible { border-color: var(--site-gold); }
.hiw-drawer-toggle svg { transition: transform var(--site-motion-fast); }
.hiw-drawer-toggle[aria-expanded="true"] svg { transform: rotate(180deg); }
.hiw-nav-drawer { margin-top: 0.9rem; background: var(--site-band); border: 1px solid color-mix(in srgb, var(--site-violet) 20%, transparent); border-radius: 0.875rem; padding: 1.375rem 1.5rem; display: grid; grid-template-columns: repeat(auto-fit, minmax(11.9rem, 1fr)); gap: 1.375rem; }
.hiw-nav-drawer[hidden] { display: none; }
.hiw-nav-drawer .hiw-rail__group-label { padding-left: 0.75rem; }
.hiw-nav-drawer .hiw-rail__row { min-height: 2.75rem; align-content: center; padding: 0.375rem 0 0.375rem 0.7rem; }

.hiw-feature-diagram { margin: clamp(2rem, 5vw, 3.5rem) 0 clamp(3rem, 7vw, 5rem); border: 1px solid var(--site-line); border-radius: 0.5rem; background: var(--site-band); overflow: hidden; }
.hiw-feature-diagram figcaption { display: grid; gap: 0.55rem; padding: clamp(1.25rem, 3vw, 2rem); border-bottom: 1px solid var(--site-line); }
.hiw-feature-diagram figcaption strong { color: var(--site-bone); font-family: var(--site-font-display); font-size: clamp(1.35rem, 2.8vw, 1.9rem); font-weight: 400; line-height: 1.12; }
.hiw-feature-diagram figcaption > span:last-child { max-width: 58rem; color: var(--site-muted); font-size: 0.9rem; line-height: 1.55; }
.hiw-feature-diagram__eyebrow { color: var(--site-gold); font-family: var(--site-font-mono); font-size: 0.65rem; letter-spacing: 0.16em; }
.hiw-diagram-flow { display: flex; align-items: stretch; padding: clamp(1rem, 3vw, 2rem); }
.hiw-diagram-node { display: flex; flex: 1 1 0; min-width: 0; min-height: 6.5rem; flex-direction: column; justify-content: center; gap: 0.55rem; padding: 1rem; border: 1px solid color-mix(in srgb, var(--site-bone) 25%, transparent); background: var(--site-void); }
.hiw-diagram-node > span { color: var(--site-bone); font-family: var(--site-font-mono); font-size: 0.72rem; letter-spacing: 0.08em; line-height: 1.4; text-transform: uppercase; }
.hiw-diagram-node small { color: var(--site-muted); font-size: 0.76rem; line-height: 1.45; }
.hiw-diagram-node--violet { border-color: var(--site-violet); background: color-mix(in srgb, var(--site-violet) 9%, var(--site-void)); }
.hiw-diagram-node--ember { border-color: var(--site-ember); background: color-mix(in srgb, var(--site-ember) 8%, var(--site-void)); }
.hiw-diagram-connector { position: relative; flex: 0 0 clamp(1rem, 2vw, 2rem); align-self: center; height: 1px; background: color-mix(in srgb, var(--site-bone) 35%, transparent); }
.hiw-diagram-connector::after { content: ""; position: absolute; right: 0; top: 50%; width: 0.4rem; height: 0.4rem; border-top: 1px solid var(--site-muted); border-right: 1px solid var(--site-muted); transform: translateY(-50%) rotate(45deg); }
.hiw-overview-map { display: grid; grid-template-columns: minmax(5rem, 0.7fr) auto minmax(9rem, 1fr) auto minmax(10rem, 1.25fr) auto minmax(10rem, 1.1fr); align-items: center; padding: clamp(1rem, 3vw, 2rem); }
.hiw-overview-sources, .hiw-overview-core, .hiw-overview-outcomes { display: grid; gap: 0.65rem; }
.hiw-overview-sources span { padding: 0.65rem; border: 1px solid color-mix(in srgb, var(--site-bone) 25%, transparent); color: var(--site-bone); font-family: var(--site-font-mono); font-size: 0.68rem; letter-spacing: 0.08em; text-align: center; text-transform: uppercase; }
.hiw-overview-map .hiw-diagram-node { min-height: 4.5rem; }
@media (max-width: 760px) {
  .hiw-diagram-flow { flex-direction: column; }
  .hiw-diagram-node { flex: none; width: 100%; min-height: 5.5rem; }
  .hiw-diagram-connector { flex: 0 0 1.5rem; width: 1px; height: 1.5rem; }
  .hiw-diagram-connector::after { right: 50%; top: auto; bottom: 0; transform: translateX(50%) rotate(135deg); }
  .hiw-overview-map { display: flex; flex-direction: column; align-items: stretch; }
  .hiw-overview-map > .hiw-diagram-connector { align-self: center; }
  .hiw-overview-sources { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.hiw-hero { padding-bottom: clamp(3rem, 7vw, 5rem); border-bottom: 1px solid var(--site-line); }
.hiw-hero__heading { max-width: 20ch; }
.hiw-hero__copy { max-width: 46rem; }

.hiw-groups { display: flex; flex-direction: column; }
.hiw-group-row { display: flex; gap: clamp(2rem, 5vw, 3.5rem); padding: clamp(2.5rem, 6vw, 4rem) 0; border-bottom: 1px solid var(--site-line); }
.hiw-group-meta { flex: 0 0 14rem; }
.hiw-group-meta__range { margin: 0 0 var(--site-space-2); color: var(--site-dim); font-family: var(--site-font-mono); font-size: 0.75rem; letter-spacing: 0.08em; }
.hiw-group-meta h2 { margin: 0 0 var(--site-space-2); color: var(--site-bone); font-family: var(--site-font-display); font-size: clamp(1.4rem, 2.6vw, 1.75rem); font-weight: 400; line-height: 1.15; }
.hiw-group-meta p { margin: 0; color: var(--site-muted); font-size: 0.95rem; line-height: 1.5; }
.hiw-group-cards { flex: 1 1 auto; min-width: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(14.5rem, 1fr)); background: var(--site-void); border-top: 1px solid var(--site-line); border-left: 1px solid var(--site-line); align-content: start; }
.hiw-page-card { display: flex; flex-direction: column; gap: 0.4rem; padding: var(--site-space-4); background: var(--site-void); color: var(--site-bone); text-decoration: none; border-right: 1px solid var(--site-line); border-bottom: 1px solid var(--site-line); transition: background-color var(--site-motion-fast), border-color var(--site-motion-fast); }
.hiw-page-card:hover, .hiw-page-card:focus-visible { background: var(--site-panel); border-color: color-mix(in srgb, var(--site-gold) 55%, transparent); }
.hiw-page-card__n { color: var(--site-dim); font-family: var(--site-font-mono); font-size: 0.75rem; }
.hiw-page-card__t { font-family: var(--site-font-display); font-size: 1.2rem; line-height: 1.2; }
.hiw-page-card__l { color: var(--site-muted); font-size: 0.85rem; line-height: 1.4; }
@media (max-width: 780px) { .hiw-group-row { flex-direction: column; gap: 1rem; } .hiw-group-meta { flex: none; } }

.hiw-close { padding-top: clamp(3rem, 7vw, 5rem); }
.hiw-close .site-heading { max-width: 18ch; margin-top: var(--site-space-3); }

.hiw-page__h1 { max-width: 20ch; }
.hiw-page__standfirst { max-width: 46rem; margin-bottom: clamp(3rem, 7vw, 5rem); }

.hiw-beats { display: grid; gap: clamp(2.5rem, 6vw, 4rem); }
.hiw-beat { padding-top: clamp(1.5rem, 4vw, 2.5rem); border-top: 1px solid var(--site-line); }
.hiw-beat:first-child { border-top: 0; padding-top: 0; }
.hiw-beat__n { margin: 0 0 var(--site-space-2); color: var(--site-dim); font-family: var(--site-font-mono); font-size: 0.75rem; letter-spacing: 0.1em; }
.hiw-beat__heading { max-width: 28ch; margin: 0 0 var(--site-space-3); color: var(--site-bone); font-family: var(--site-font-display); font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 400; line-height: 1.05; }
.hiw-beat .site-copy + .site-copy { margin-top: var(--site-space-3); }

.hiw-example-card { display: grid; gap: 0.65rem clamp(1.5rem, 4vw, 3rem); margin: clamp(3rem, 7vw, 5rem) 0 0; padding: clamp(1.4rem, 4vw, 2.25rem); border: 1px solid var(--site-line); background: var(--site-panel); }
.hiw-example-card h2 { margin: 0; color: var(--site-bone); font-family: var(--site-font-display); font-size: clamp(1.45rem, 3vw, 2rem); font-weight: 400; line-height: 1.15; }
.hiw-example-card > p:not(.site-marker) { margin: 0; color: var(--site-muted); font-size: 0.92rem; line-height: 1.65; }
.hiw-example-card > p:not(.site-marker) + p { margin-top: 0.2rem; }
@media (min-width: 720px) {
  .hiw-example-card { grid-template-columns: minmax(10rem, 0.75fr) minmax(0, 1.5fr); }
  .hiw-example-card .site-marker, .hiw-example-card h2 { grid-column: 1; }
  .hiw-example-card h2 { grid-row: 2 / span 2; }
  .hiw-example-card > p:not(.site-marker) { grid-column: 2; }
  .hiw-example-card > p:not(.site-marker):first-of-type { grid-row: 1 / span 2; }
}

.hiw-status-card { margin: clamp(1.5rem, 4vw, 2.5rem) 0 clamp(3rem, 7vw, 5rem); padding: clamp(1.4rem, 4vw, 2.25rem); border: 1px solid color-mix(in srgb, var(--site-violet) 60%, var(--site-line)); border-left: 3px solid var(--site-violet); background: color-mix(in srgb, var(--site-violet) 7%, var(--site-band)); }
.hiw-status-card h2 { margin: 0.55rem 0 0.75rem; color: var(--site-bone); font-family: var(--site-font-display); font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 400; }
.hiw-status-card > p:not(.site-marker), .hiw-status-card li { color: var(--site-muted); font-size: 0.9rem; line-height: 1.6; }
.hiw-status-card ul { margin: 1rem 0 0; padding-left: 1.2rem; }
.hiw-status-card li + li { margin-top: 0.35rem; }

.hiw-receipt-pair { display: grid; gap: var(--site-space-3); grid-template-columns: repeat(2, minmax(0, 1fr)); margin: clamp(2rem, 5vw, 3rem) 0; }
.hiw-receipt-pair .receipt { width: auto; }
.hiw-artefact-caption { grid-column: 1 / -1; margin: 0; color: var(--site-muted); font-family: var(--site-font-mono); font-size: 0.78rem; }
.receipt--deny { border-color: color-mix(in srgb, var(--site-ember) 40%, var(--site-line)); }
@media (max-width: 640px) { .hiw-receipt-pair { grid-template-columns: 1fr; } }

.hiw-founder-note { max-width: 46rem; margin: clamp(2.5rem, 6vw, 4rem) 0 0; padding-left: var(--site-space-4); border-left: 1px solid var(--site-violet); }
.hiw-founder-note p { margin: 0; color: var(--site-bone); font-family: var(--site-font-display); font-size: 1.35rem; font-style: italic; font-weight: 400; line-height: 1.5; }
.hiw-founder-note cite { display: block; margin-top: var(--site-space-3); color: var(--site-muted); font-family: var(--site-font-mono); font-size: 0.75rem; font-style: normal; letter-spacing: 0.08em; }

.hiw-status-line { margin: var(--site-space-2) 0 clamp(2.5rem, 6vw, 4rem); color: var(--site-muted); font-family: var(--site-font-mono); font-size: 0.8rem; line-height: 1.7; }

.hiw-faq { display: grid; gap: clamp(2rem, 5vw, 3rem); }
.hiw-faq__item { padding-top: clamp(1.5rem, 4vw, 2rem); border-top: 1px solid var(--site-line); }
.hiw-faq__item:first-child { border-top: 0; padding-top: 0; }
.hiw-faq__q { max-width: 34ch; margin: 0 0 var(--site-space-3); color: var(--site-bone); font-family: var(--site-font-display); font-size: clamp(1.4rem, 2.6vw, 1.9rem); font-weight: 400; font-style: italic; line-height: 1.2; }

.hiw-next { display: block; padding: clamp(1.5rem, 4vw, 2.5rem); margin-bottom: clamp(2rem, 5vw, 3rem); border: 1px solid var(--site-line); border-radius: 0.375rem; background: var(--site-band); text-decoration: none; transition: border-color var(--site-motion-fast), background-color var(--site-motion-fast); }
.hiw-next:hover, .hiw-next:focus-visible { border-color: var(--site-violet); background: var(--site-panel); }
.hiw-next__title { display: block; margin-top: var(--site-space-2); color: var(--site-bone); font-family: var(--site-font-display); font-size: clamp(1.5rem, 3vw, 2rem); }
.hiw-next__line { display: block; margin-top: var(--site-space-2); color: var(--site-muted); }

@media (prefers-reduced-motion: reduce) {
  .hiw-rail__row,
  .hiw-rail__t,
  .hiw-drawer-toggle svg,
  .hiw-page-card,
  .hiw-next { transition: none; }
}