/* ==========================================================================
   NICU Jargon Rx - layout.css
   Container, grid, header/navigation, footer, section rhythm.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CONTAINER & GRID
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--narrow { max-width: var(--container-n); }
.container--flush  { padding-inline: 0; }

/* 12-column editorial grid. Asymmetric placements are the default -
   full-width symmetric blocks are the exception. */
.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--gutter);
  row-gap: var(--sp-4);
}

@media (max-width: 899px) {
  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}
@media (max-width: 599px) {
  .grid { grid-template-columns: repeat(4, minmax(0, 1fr)); row-gap: var(--sp-3); }
}

/* Column spans - desktop.
   These set grid-column-END only. Using the `grid-column` shorthand here would
   put the span on grid-column-START, which the .start-* classes below then
   overwrite - silently collapsing the element to a single track. */
@media (min-width: 900px) {
  .c-1  { grid-column-end: span 1; }   .c-2  { grid-column-end: span 2; }
  .c-3  { grid-column-end: span 3; }   .c-4  { grid-column-end: span 4; }
  .c-5  { grid-column-end: span 5; }   .c-6  { grid-column-end: span 6; }
  .c-7  { grid-column-end: span 7; }   .c-8  { grid-column-end: span 8; }
  .c-9  { grid-column-end: span 9; }   .c-10 { grid-column-end: span 10; }
  .c-12 { grid-column: 1 / -1; }
  .start-2 { grid-column-start: 2; }  .start-3  { grid-column-start: 3; }
  .start-4 { grid-column-start: 4; }  .start-5  { grid-column-start: 5; }
  .start-6 { grid-column-start: 6; }  .start-7  { grid-column-start: 7; }
  .start-8 { grid-column-start: 8; }  .start-9  { grid-column-start: 9; }
  .start-10 { grid-column-start: 10; } .start-11 { grid-column-start: 11; }
}
/* Below 900px everything goes full-bleed within the grid */
@media (max-width: 899px) {
  [class*="c-"] { grid-column: 1 / -1; }
  [class*="start-"] { grid-column-start: 1; }
}

/* --------------------------------------------------------------------------
   2. SECTION RHYTHM
   -------------------------------------------------------------------------- */
.section { padding-block: var(--section-y); }

/* Item 16: a tighter vertical rhythm on the homepage only. The homepage runs
   long, so its section padding is reduced by roughly a fifth at every viewport
   width. The tokens themselves are untouched, so every other page keeps the
   original spacing. Reduced rather than removed: the editorial breathing room
   is the point, it was simply more generous than the page needed. */
.page-home .section       { padding-block: var(--section-y-home); }
.page-home .section--tight{ padding-block: var(--section-y-home-s); }
.page-home .section--top-0{ padding-block-start: 0; }
.page-home .section--bot-0{ padding-block-end: 0; }

/* The closing "For hospitals & institutions" band carries section--top-0, so it
   opened hard against the dark section above it. This gives it a little room to
   start, scaled to the viewport (about 34px desktop, 31px laptop, 24px tablet,
   20px mobile). Declared after the .section--top-0 rules above so it wins, and
   scoped to this one section: no other section's spacing changes. */
.page-home .section--cta-lead { padding-block-start: clamp(1.25rem, .55rem + 1.9vw, 2.25rem); }

/* Our Story: tighten the run-up to the Founder section.
   The Founder now follows the opening image, so two full section paddings were
   stacking: the image section's bottom (110px at 1440) plus the Founder's top
   (162px), leaving ~360px of empty page between the caption and the portrait.
   Both sides are reduced by roughly 40% so the transition still reads as a
   clear section break, just without the void. Scoped to this page: the
   homepage Founder section and every other page keep their original spacing.
   .section--tight appears exactly once on this page, on that image section. */
.page-story .section--tight { padding-block-end: clamp(2rem, .9rem + 2.8vw, 4rem); }
.page-story #founder        { padding-block-start: clamp(2.75rem, 1.2rem + 3.4vw, 4.75rem); }
.section--tight { padding-block: var(--section-y-s); }
.section--top-0 { padding-block-start: 0; }
.section--bot-0 { padding-block-end: 0; }
.section--bone-deep { background: var(--bone-deep); }
.section--paper { background: var(--paper); }

/* Section head: index numeral + eyebrow + hairline, the formulary signature */
.section-head {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--gutter);
  align-items: start;
  padding-block-start: var(--sp-3);
  border-block-start: 1px solid var(--line);
  margin-block-end: clamp(2.5rem, 1rem + 4vw, 5rem);
  position: relative;
}
.on-ink .section-head { border-block-start-color: var(--line-dark); }

.section-head::before {
  content: "";
  position: absolute; inset-block-start: -1px; inset-inline-start: 0;
  width: 4rem; height: 1px;
  background: var(--brand);
}
.section-head__meta { grid-column: span 3; }
.section-head__body { grid-column: 4 / 12; }
/* Section numbers were removed, so the title cell is now usually the only
   child of .section-head. Without this it would keep its old indent and sit
   in the middle of the rule with an empty column to its left. */
.section-head__body:only-child { grid-column: 1 / 12; }

@media (max-width: 899px) {
  .section-head { grid-template-columns: 1fr; row-gap: var(--sp-2); }
  .section-head__meta, .section-head__body { grid-column: 1 / -1; }
}

/* --------------------------------------------------------------------------
   3. HEADER
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bone) 82%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-block-end: 1px solid transparent;
  transition: border-color var(--dur-2) var(--ease),
              background-color var(--dur-2) var(--ease);
}
.site-header.is-stuck {
  border-block-end-color: var(--line);
  background: color-mix(in srgb, var(--bone) 93%, transparent);
}

/* Header over a dark hero inverts until scrolled */
.site-header.is-over-ink {
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.header__inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
}

/* --- Logo lockup ---------------------------------------------------------
   The supplied logo reads "JARGON RX". The brand is "NICU Jargon Rx", so
   "NICU" is set beside it in the site's own sans - the logo artwork itself
   is never altered, recoloured or redrawn.
   ------------------------------------------------------------------------- */
.logo {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  flex: none;
  transition: opacity var(--dur-1) var(--ease);
}
.logo:hover { opacity: .78; }

.logo__nicu {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(.9rem, .78rem + .38vw, 1.1rem);
  letter-spacing: .1em;
  color: var(--brand-deep);
  line-height: 1;
  padding-block-start: .12em;
}
.logo__mark {
  /* The lockup used to be the typeset word "NICU" plus this artwork. With the
     text removed the artwork carries the header alone, and at the old size it
     sat at ~40% of the header height and read as undersized. This brings it to
     roughly half the header height at every width, which balances against the
     navigation without dominating it. */
  height: clamp(1.85rem, 1.45rem + 1.7vw, 2.6rem);
  width: auto;
}
.on-ink .logo__nicu, .is-over-ink .logo__nicu { color: var(--cream); }
.on-ink .logo__mark, .is-over-ink .logo__mark {
  filter: drop-shadow(0 0 14px rgba(0, 151, 178, .38));
}

/* Footer variant - larger, breathing */
.logo--lg .logo__mark { height: clamp(2.7rem, 2rem + 2.7vw, 3.8rem); }
.logo--lg .logo__nicu { font-size: clamp(1.15rem, .95rem + .8vw, 1.6rem); }

/* --- Primary navigation --------------------------------------------------- */
.nav { display: flex; align-items: center; gap: clamp(1.25rem, .4rem + 1.9vw, 2.5rem); }

.nav__list {
  display: flex;
  align-items: center;
  gap: clamp(1.1rem, .3rem + 1.7vw, 2.25rem);
}

.nav__link {
  position: relative;
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: -.005em;
  color: var(--ink);
  padding-block: .4rem;
  white-space: nowrap;
}
.is-over-ink .nav__link { color: var(--cream); }

.nav__link::after {
  content: "";
  position: absolute;
  inset-inline: 0; inset-block-end: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-2) var(--ease-out);
}
.nav__link:hover::after,
.nav__link:focus-visible::after { transform: scaleX(1); }

.nav__link[aria-current="page"] { color: var(--brand-deep); }
.is-over-ink .nav__link[aria-current="page"] { color: var(--brand-lift); }
.nav__link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--brand);
}

@media (max-width: 1023px) {
  .nav--desktop { display: none; }
}

/* --- Mobile toggle -------------------------------------------------------- */
.nav-toggle {
  display: none;
  width: 2.75rem; height: 2.75rem;
  align-items: center; justify-content: center;
  border-radius: var(--r);
  margin-inline-end: -.6rem;
  color: var(--ink);
}
.is-over-ink .nav-toggle { color: var(--cream); }

@media (max-width: 1023px) {
  .nav-toggle { display: inline-flex; }
}

.nav-toggle__bars { position: relative; width: 22px; height: 12px; }
.nav-toggle__bars span {
  position: absolute; inset-inline: 0;
  height: 1.5px; background: currentColor;
  transition: transform var(--dur-2) var(--ease-out), opacity var(--dur-1) linear;
}
.nav-toggle__bars span:nth-child(1) { top: 0; }
.nav-toggle__bars span:nth-child(2) { bottom: 0; }

[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) {
  transform: translateY(5.25px) rotate(45deg);
}
[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) {
  transform: translateY(-5.25px) rotate(-45deg);
}

/* --- Mobile drawer -------------------------------------------------------- */
.nav-drawer {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--ink);
  color: var(--cream);
  padding: calc(var(--header-h) + var(--sp-5)) var(--gutter) var(--sp-5);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-1.25rem);
  transition: opacity var(--dur-2) var(--ease),
              transform var(--dur-3) var(--ease-out),
              visibility 0s linear var(--dur-2);
}
.nav-drawer.is-open {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition-delay: 0s;
}
@media (min-width: 1024px) {
  .nav-drawer { display: none; }
}

.nav-drawer__list { display: flex; flex-direction: column; }

.nav-drawer__item { border-block-start: 1px solid var(--line-dark); }
.nav-drawer__item:last-child { border-block-end: 1px solid var(--line-dark); }

.nav-drawer__link {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding-block: clamp(.85rem, .5rem + 1.4vw, 1.35rem);
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 1.1rem + 3.4vw, 2.75rem);
  line-height: 1.05;
  letter-spacing: -.024em;
  font-variation-settings: "SOFT" 20, "WONK" 0;
  color: var(--cream);
  transition: color var(--dur-1) var(--ease);
}
.nav-drawer__link:hover { color: var(--brand-lift); }
.nav-drawer__link[aria-current="page"] { color: var(--brand-lift); }
.nav-drawer__num {
  font-family: var(--font-sans);
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--brand-lift);
  font-variant-numeric: tabular-nums;
  flex: none;
}
.nav-drawer__foot { padding-block-start: var(--sp-4); }

/* Staggered entrance for drawer items */
.nav-drawer.is-open .nav-drawer__item {
  animation: drawerIn var(--dur-3) var(--ease-out) both;
  animation-delay: calc(60ms + var(--i, 0) * 45ms);
}
@keyframes drawerIn {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .nav-drawer.is-open .nav-drawer__item { animation: none; }
}

/* --------------------------------------------------------------------------
   4. FOOTER
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--ink);
  color: var(--cream);
  padding-block: clamp(3.5rem, 2rem + 6vw, 7rem) var(--sp-4);
}

.footer__top {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--gutter);
  row-gap: var(--sp-5);
  padding-block-end: clamp(2.5rem, 1.5rem + 4vw, 5rem);
}
.footer__brand { grid-column: span 5; }
.footer__nav-group { grid-column: span 2; }
.footer__cta { grid-column: 10 / -1; }

@media (max-width: 1023px) {
  .footer__brand { grid-column: 1 / -1; }
  .footer__nav-group { grid-column: span 4; }
  .footer__cta { grid-column: 1 / -1; }
}
@media (max-width: 599px) {
  .footer__nav-group { grid-column: span 6; }
}

.footer__tagline {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, .95rem + .9vw, 1.6rem);
  font-style: italic;
  font-variation-settings: "SOFT" 40, "WONK" 1;
  letter-spacing: -.018em;
  line-height: 1.25;
  color: var(--cream);
  margin-block-start: var(--sp-3);
}

.footer__heading {
  font-family: var(--font-sans);
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--brand-lift);
  margin-block-end: var(--sp-2);
}

.footer__list li + li { margin-block-start: .6rem; }

.footer__link {
  font-size: var(--fs-sm);
  color: color-mix(in srgb, var(--cream) 78%, transparent);
  transition: color var(--dur-1) var(--ease);
}
.footer__link:hover { color: var(--cream); }

.footer__bottom {
  border-block-start: 1px solid var(--line-dark);
  padding-block-start: var(--sp-3);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2) var(--sp-4);
  align-items: baseline;
  justify-content: space-between;
  font-size: var(--fs-xs);
  color: var(--muted-dark);
}
.footer__legal { display: flex; flex-wrap: wrap; gap: var(--sp-1) var(--sp-3); }

.footer__disclaimer {
  max-width: 68ch;
  margin-block-start: var(--sp-3);
  font-size: var(--fs-xs);
  line-height: 1.6;
  color: color-mix(in srgb, var(--muted-dark) 85%, transparent);
}