/* ===========================================================================
   Rotary Corneal Transplantation — The Gift of Sight

   Two ideas carry this design, both taken from the subject rather than
   applied to it:

   1. HAZE TO CLARITY. Corneal blindness is literally opacity; a graft restores
      transparency. The hero holds one image twice — blurred and sharp — and
      masks between them, so the picture resolves across its own width. It is a
      static gradient, not an animation. Nothing moves.

   2. THE REGISTER. Every transplant is numbered (No. 388, No. 447, No. 448).
      That is a real ledger the clubs keep, so the news is set as one: serial
      number in mono, hairline rules, hospital and surgeon as columns. The
      structure encodes something true instead of decorating.

   Colour is sampled from the program's own banner artwork. Motion is limited to
   a 10px settle on first view, switched off entirely for reduced motion.
   =========================================================================== */

:root {
  --ink:    #071D33;
  --ink-2:  #0E3159;
  --azure:  #0B6FB8;
  --beam:   #56C7F5;
  --clear:  #EAF3F9;
  --paper:  #FFFFFF;
  --gold:   #F2A81D;
  --haze:   #7A94A8;

  --ink-70: color-mix(in srgb, var(--ink) 70%, transparent);
  --line:   color-mix(in srgb, var(--haze) 34%, transparent);

  --display: "Literata", Georgia, serif;
  --body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --data: "IBM Plex Mono", ui-monospace, Menlo, monospace;

  --step--1: clamp(0.8rem, 0.77rem + 0.15vw, 0.88rem);
  --step-0:  clamp(1rem, 0.96rem + 0.22vw, 1.1rem);
  --step-1:  clamp(1.18rem, 1.08rem + 0.5vw, 1.45rem);
  --step-2:  clamp(1.45rem, 1.22rem + 1.1vw, 2.15rem);
  --step-3:  clamp(1.75rem, 1.35rem + 2vw, 3.1rem);
  --step-4:  clamp(2.15rem, 1.4rem + 3.6vw, 4.6rem);
  --step-5:  clamp(2.6rem, 1.5rem + 4.6vw, 5.4rem);

  --measure: 64ch;
  --gutter: clamp(1.15rem, 4vw, 3rem);
  --bay: clamp(3.25rem, 8vw, 6.5rem);
  --radius: 2px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--body); font-size: var(--step-0); line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 {
  font-family: var(--display); font-weight: 700; line-height: 1.08;
  letter-spacing: -0.02em; margin: 0 0 0.5em; text-wrap: balance;
}
h1 { font-size: var(--step-4); }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-1); letter-spacing: -0.01em; }
p { margin: 0 0 1.1em; }
a { color: var(--azure); text-underline-offset: 0.18em; }
a:hover { color: var(--ink); }

:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; }

.skip { position: absolute; left: -9999px; background: var(--ink); color: #fff; padding: 0.7rem 1rem; z-index: 100; }
.skip:focus { left: 0.5rem; top: 0.5rem; }

/* --- layout --------------------------------------------------------------- */
.wrap { width: 100%; max-width: 78rem; margin-inline: auto; padding-inline: var(--gutter); }
.prose { max-width: var(--measure); }
.prose h2 { margin-top: 1.7em; }
.prose h3 { margin-top: 1.6em; }
.bay { padding-block: var(--bay); }
.lede { font-size: var(--step-1); line-height: 1.5; }

.eyebrow {
  font-family: var(--data); font-size: var(--step--1); letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--azure); margin: 0 0 1.1rem;
  display: flex; align-items: center; gap: 0.85rem;
}
.eyebrow::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.on-dark .eyebrow { color: var(--beam); }
.on-dark .eyebrow::after { background: rgba(255,255,255,0.22); }

.js .reveal { opacity: 0; transform: translateY(10px); transition: opacity 0.65s ease, transform 0.65s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js .reveal { opacity: 1; transform: none; transition: none; } }

/* --- header --------------------------------------------------------------- */
.site-head {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.head-bar { display: flex; align-items: center; gap: 0.7rem; min-height: 62px; }
.brand { display: flex; align-items: center; gap: 0.55rem; text-decoration: none; color: var(--ink); margin-right: auto; min-width: 0; }
.brand img { width: 30px; height: 30px; object-fit: contain; flex: none; }
.brand-text { min-width: 0; }
.brand b { font-family: var(--display); font-size: 0.86rem; line-height: 1.1; display: block; max-width: 11ch; }
.brand .tag { font-family: var(--data); font-size: 0.58rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--haze); display: none; }
@media (min-width: 26rem) {
  .brand b { font-size: 0.98rem; max-width: none; }
  .brand .tag { display: block; }
  .brand img { width: 34px; height: 34px; }
}
.nav-toggle {
  display: inline-flex; align-items: center; flex: none; background: none;
  border: 1px solid var(--haze); border-radius: var(--radius); color: var(--ink);
  font: 500 0.85rem/1 var(--body); padding: 0.62rem 0.8rem; cursor: pointer;
  min-height: 44px;
}
.head-bar .btn-sm { flex: none; padding: 0.62rem 0.85rem; }
.site-nav { display: none; }
.site-nav.open { display: block; }
.site-nav ul { list-style: none; margin: 0; padding: 0 0 1rem; }
.site-nav a { display: block; padding: 0.8rem 0.1rem; text-decoration: none; color: var(--ink); font-weight: 500; border-bottom: 1px solid var(--line); }
.site-nav a[aria-current="page"] { color: var(--azure); }
@media (min-width: 64rem) {
  .nav-toggle { display: none; }
  .site-nav { display: block !important; }
  .site-nav ul { display: flex; gap: 1.5rem; padding: 0; }
  .site-nav a { border: 0; padding: 0.35rem 0; font-size: 0.94rem; }
  .site-nav a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--beam); }
}

/* --- buttons -------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  font: 600 var(--step-0)/1 var(--body); padding: 1rem 1.5rem;
  border-radius: var(--radius); text-decoration: none;
  border: 1.5px solid transparent; cursor: pointer; min-height: 48px;
}
.btn-give { background: var(--gold); color: #22170A; }
.btn-give:hover { background: #ffbe45; color: #22170A; }
.btn-line { border-color: currentColor; color: var(--ink); background: none; }
.btn-line:hover { background: var(--clear); }
.on-dark .btn-line { color: var(--paper); }
.on-dark .btn-line:hover { background: rgba(255,255,255,0.12); color: var(--paper); }
.btn-sm { padding: 0.6rem 0.95rem; font-size: 0.87rem; min-height: 44px; }

/* --- HERO: the image resolves across its own width ------------------------ */
.hero { position: relative; background: var(--ink); color: var(--paper); overflow: hidden; isolation: isolate; }
.hero-media { position: absolute; inset: 0; z-index: 0; }
.hero-media img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  filter: grayscale(1) contrast(1.15) brightness(0.85);
}
.hero-media .hazed {
  filter: grayscale(1) blur(16px) brightness(0.8);
  -webkit-mask-image: linear-gradient(105deg, #000 0%, #000 26%, transparent 68%);
          mask-image: linear-gradient(105deg, #000 0%, #000 26%, transparent 68%);
}
.hero-tint { position: absolute; inset: 0; z-index: 1; background: var(--ink-2); mix-blend-mode: color; }
.hero-scrim {
  position: absolute; inset: 0; z-index: 2;
  background:
    linear-gradient(93deg, var(--ink) 8%, color-mix(in srgb, var(--ink) 72%, transparent) 52%, color-mix(in srgb, var(--ink) 30%, transparent) 100%),
    linear-gradient(180deg, color-mix(in srgb, var(--ink) 40%, transparent) 0%, transparent 40%);
}
.hero-inner { position: relative; z-index: 3; padding-block: clamp(3.5rem, 13vw, 8rem); }
.hero h1 { color: var(--paper); max-width: 16ch; margin-bottom: 0.55em; }
.hero .lede { max-width: 40ch; color: color-mix(in srgb, var(--paper) 88%, var(--beam)); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.9rem; }
.hero-note {
  margin-top: 2.6rem; padding-top: 1.1rem; border-top: 1px solid rgba(255,255,255,0.18);
  font-family: var(--data); font-size: var(--step--1); color: color-mix(in srgb, var(--paper) 62%, transparent); max-width: 46ch;
}
@media (min-width: 64rem) { .hero-inner { max-width: 62%; } }

/* --- REGISTER ------------------------------------------------------------- */
.register { border-top: 1px solid var(--line); }
.register-row {
  display: grid; gap: 0.2rem 1.5rem; padding: 1.6rem 0;
  border-bottom: 1px solid var(--line); align-items: baseline;
}
.register-row b {
  font-family: var(--data); font-weight: 400; font-size: var(--step-5);
  line-height: 0.92; letter-spacing: -0.04em; color: var(--ink);
  font-variant-numeric: tabular-nums; white-space: nowrap; min-width: 0;
}
.register-row .lab { font-family: var(--data); font-size: var(--step--1); letter-spacing: 0.14em; text-transform: uppercase; color: var(--azure); }
.register-row .say { color: var(--ink-70); max-width: 46ch; }
@media (min-width: 48rem) {
  .register-row { grid-template-columns: minmax(0, 13rem) minmax(0, 1fr); column-gap: 2.5rem; }
  .register-row b { grid-row: span 2; text-align: right; }
}

/* --- statement ------------------------------------------------------------ */
.statement { font-family: var(--display); font-size: var(--step-2); line-height: 1.28; letter-spacing: -0.015em; max-width: 26ch; }
.statement em { font-style: italic; color: var(--azure); }

/* --- steps ---------------------------------------------------------------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; counter-reset: step; }
.step { position: relative; counter-increment: step; padding: 1.7rem 0; border-top: 1px solid var(--line); display: grid; gap: 0.3rem; }
.step:last-child { border-bottom: 1px solid var(--line); }
.step::before { content: counter(step, decimal-leading-zero); font-family: var(--data); font-size: var(--step--1); color: var(--azure); letter-spacing: 0.1em; }
.step h3 { margin: 0; }
.step p { margin: 0; color: var(--ink-70); max-width: 52ch; }
@media (min-width: 52rem) {
  .step { grid-template-columns: 4rem minmax(0, 16rem) minmax(0, 1fr); gap: 1.5rem; align-items: baseline; }
  .step::before { grid-row: 1; }
}

/* --- LEDGER --------------------------------------------------------------- */
.ledger { border-top: 1px solid var(--line); }
.ledger-row {
  display: grid; gap: 0.5rem 2rem; padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none; color: inherit; align-items: baseline;
}
.ledger-row:hover { background: var(--clear); }
.ledger-row .no {
  font-family: var(--data); font-size: var(--step-2); line-height: 1;
  color: var(--azure); letter-spacing: -0.03em; font-variant-numeric: tabular-nums;
}
.ledger-row .no::before {
  content: "No."; display: block; font-size: 0.42em; letter-spacing: 0.18em;
  color: var(--haze); margin-bottom: 0.35em;
}
.ledger-row .main { display: grid; gap: 0.2rem; min-width: 0; }
.ledger-row .where { font-family: var(--display); font-weight: 700; font-size: var(--step-1); line-height: 1.2; }
.ledger-row .desc { color: var(--ink-70); font-size: 0.95rem; }
.ledger-row .who { font-family: var(--data); font-size: var(--step--1); color: var(--haze); }
@media (min-width: 52rem) {
  .ledger-row { grid-template-columns: 6rem minmax(0, 1fr) minmax(0, 14rem); }
  .ledger-row .who { text-align: right; }
}

/* --- bands ---------------------------------------------------------------- */
.band-clear { background: var(--clear); }
.band-ink { background: var(--ink); color: var(--paper); }
.band-ink h2, .band-ink h3, .band-ink .statement { color: var(--paper); }
.band-ink p { color: color-mix(in srgb, var(--paper) 80%, transparent); }
.band-ink a:not(.btn) { color: var(--beam); }
.band-ink .statement em { color: var(--beam); }

/* --- facts ---------------------------------------------------------------- */
.facts { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.facts li { padding: 1.5rem 0; border-bottom: 1px solid var(--line); display: grid; gap: 0.25rem 2rem; align-items: baseline; }
.facts .n { font-family: var(--data); font-size: var(--step-2); color: var(--azure); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.facts .t { color: var(--ink-70); max-width: 54ch; }
@media (min-width: 48rem) { .facts li { grid-template-columns: minmax(0, 11rem) minmax(0, 1fr); } }

/* --- faq ------------------------------------------------------------------ */
details.qa { border-bottom: 1px solid var(--line); }
details.qa:first-of-type { border-top: 1px solid var(--line); }
details.qa summary {
  cursor: pointer; padding: 1.15rem 0; font-weight: 700; list-style: none;
  display: flex; justify-content: space-between; gap: 1.5rem; align-items: baseline;
  font-family: var(--display); font-size: var(--step-1);
}
details.qa summary::-webkit-details-marker { display: none; }
details.qa summary::after { content: "+"; font-family: var(--data); color: var(--azure); font-size: 1.25rem; line-height: 1; flex: none; }
details.qa[open] summary::after { content: "\2013"; }
details.qa p { color: var(--ink-70); margin: 0 0 1.2rem; max-width: var(--measure); }

/* --- article -------------------------------------------------------------- */
.article-head { border-bottom: 1px solid var(--line); padding-bottom: 1.8rem; margin-bottom: 2.2rem; }
.article-head time { font-family: var(--data); font-size: var(--step--1); color: var(--haze); }
.article-serial {
  font-family: var(--data); font-size: var(--step-3); line-height: 1;
  color: var(--haze); letter-spacing: -0.03em; margin: 0 0 0.35em;
  font-variant-numeric: tabular-nums;
}

/* --- footer --------------------------------------------------------------- */
.site-foot { background: var(--ink); color: color-mix(in srgb, var(--paper) 76%, transparent); padding-block: var(--bay) 2.5rem; }
.site-foot a { color: var(--beam); }
.foot-grid { display: grid; gap: 2.2rem; }
@media (min-width: 54rem) { .foot-grid { grid-template-columns: 1.5fr 1fr 1.2fr; gap: 3.5rem; } }
.site-foot h4 { color: var(--paper); font-family: var(--data); font-size: 0.7rem; letter-spacing: 0.16em; text-transform: uppercase; font-weight: 500; margin-bottom: 1rem; }
.site-foot ul { list-style: none; margin: 0; padding: 0; }
.site-foot li { margin-bottom: 0.55rem; }
.foot-base {
  margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,0.14);
  font-size: var(--step--1); color: color-mix(in srgb, var(--paper) 58%, transparent);
  display: grid; gap: 0.4rem;
}