/* =========================================================================
   LUI Centre for Arthritis & Rheumatology: site stylesheet
   1. Fonts  2. Tokens  3. Base  4. Layout  5. Components  6. Sections
   ========================================================================= */

/* 1. Fonts ---------------------------------------------------------------- */
@font-face {
  font-family: "Inter";
  src: url("../fonts/inter-var-latin.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Source Serif 4";
  src: url("../fonts/source-serif-4-var-latin.woff2") format("woff2");
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
}

/* 2. Tokens --------------------------------------------------------------- */
:root {
  /* Brand, sampled from the logo */
  --brand-blue: #0099cc;
  --brand-green: #77dd77;

  /* Palette */
  --ink: #0b3442;          /* headings */
  --text: #334155;         /* body copy */
  --muted: #536475;        /* secondary copy */
  --link: #006f94;         /* links, primary buttons (AA on white) */
  --link-hover: #00546f;
  --accent-green: #2f7d4a; /* icons/ticks on light surfaces */
  --surface: #ffffff;
  --surface-soft: #f4f9fb;
  --surface-tint: #e6f4fa;
  --line: #d9e6ed;
  --focus: #0099cc;

  /* Type */
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --fs-sm: 0.875rem;
  --fs-base: 1.0625rem;
  --fs-lg: clamp(1.125rem, 1.05rem + 0.35vw, 1.3rem);
  --fs-h3: clamp(1.2rem, 1.1rem + 0.5vw, 1.45rem);
  --fs-h2: clamp(1.75rem, 1.4rem + 1.6vw, 2.6rem);
  --fs-h1: clamp(2.2rem, 1.6rem + 3vw, 3.75rem);
  --lh-tight: 1.15;
  --lh-body: 1.7;

  /* Space (8pt scale) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --section-y: clamp(3.5rem, 2.5rem + 5vw, 7rem);

  /* Shape & depth */
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 2px rgb(11 52 66 / 0.06), 0 1px 3px rgb(11 52 66 / 0.08);
  --shadow: 0 10px 30px -12px rgb(11 52 66 / 0.18);

  /* Layout */
  --container: 1200px;
  --gutter: clamp(1rem, 0.5rem + 2.5vw, 2rem);
  --measure: 70ch;
  --header-h: 76px;
}

/* 3. Base ----------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + var(--space-4));
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-body);
  color: var(--text);
  background: var(--surface);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  margin: 0 0 var(--space-4);
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: var(--lh-tight);
  color: var(--ink);
  text-wrap: balance;
}
h1 { font-size: var(--fs-h1); letter-spacing: -0.015em; }
h2 { font-size: var(--fs-h2); letter-spacing: -0.01em; }
h3 { font-size: var(--fs-h3); }

p { margin: 0 0 var(--space-4); text-wrap: pretty; }
p:last-child { margin-bottom: 0; }

ul { margin: 0; padding: 0; }

a { color: var(--link); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { color: var(--link-hover); }

img, svg { display: block; max-width: 100%; height: auto; }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}

address { font-style: normal; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: var(--space-2);
  left: var(--space-2);
  z-index: 100;
  padding: var(--space-3) var(--space-4);
  background: var(--ink);
  color: #fff;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transform: translateY(-200%);
}
.skip-link:focus { transform: none; color: #fff; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* 4. Layout --------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: calc(var(--container) + 2 * var(--gutter));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--section-y); }
.section--soft { background: var(--surface-soft); }
.section--tight-top { padding-top: 0; }

.split {
  display: grid;
  gap: var(--space-7);
  align-items: center;
}
@media (min-width: 900px) {
  .split { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
  .split--media-first > :last-child { order: -1; }
}

.prose { max-width: var(--measure); }

/* 5. Components ----------------------------------------------------------- */

/* Eyebrow label above section headings */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-3);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--link);
}
.eyebrow::before {
  content: "";
  width: 1.5rem;
  height: 2px;
  background: var(--brand-green);
  border-radius: 2px;
}

.lead { font-size: var(--fs-lg); color: var(--muted); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: var(--space-3) var(--space-5);
  font: 600 1rem/1.2 var(--font-sans);
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s, border-color 0.2s, transform 0.2s;
}
.btn svg { width: 1.15em; height: 1.15em; flex: none; }
.btn--primary { background: var(--link); color: #fff; }
.btn--primary:hover { background: var(--link-hover); color: #fff; }
.btn--ghost { border-color: var(--line); background: var(--surface); color: var(--ink); }
.btn--ghost:hover { border-color: var(--link); color: var(--link); }
.btn--sm { min-height: 40px; padding: var(--space-2) var(--space-4); font-size: 0.9375rem; }

.btn-row { display: flex; flex-wrap: wrap; gap: var(--space-3); }

/* Text link with arrow */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  text-decoration: none;
}
.link-arrow svg { width: 1.1em; height: 1.1em; transition: transform 0.2s; }
.link-arrow:hover svg { transform: translateX(3px); }

/* Card */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

/* Icon badge */
.icon-badge {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  margin-bottom: var(--space-4);
  border-radius: 12px;
  background: var(--surface-tint);
  color: var(--link);
}
.icon-badge svg { width: 1.5rem; height: 1.5rem; }

/* Tick list */
.tick-list { list-style: none; display: grid; gap: var(--space-3); }
.tick-list li {
  display: grid;
  grid-template-columns: 1.5rem 1fr;
  gap: var(--space-3);
  align-items: start;
}
.tick-list svg { width: 1.5rem; height: 1.5rem; color: var(--accent-green); margin-top: 0.15em; }

/* Rounded media frame */
.media-frame {
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  background: var(--surface-tint);
}
.media-frame img { width: 100%; height: 100%; object-fit: cover; }

/* Header ------------------------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgb(255 255 255 / 0.94);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  min-height: var(--header-h);
}
.site-logo { flex: none; margin-right: auto; }
.site-logo img { width: 190px; height: auto; }

.header-call { flex: none; }
.header-call__number { display: none; }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 40px;
  padding: var(--space-2) var(--space-3);
  font: 600 0.9375rem/1 var(--font-sans);
  color: var(--ink);
  background: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
}
.nav-toggle svg { width: 1.25rem; height: 1.25rem; }

.site-nav ul { list-style: none; }
.site-nav a {
  display: block;
  padding: var(--space-3) var(--space-2);
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
}
.site-nav a:hover { color: var(--link); }
.site-nav a[aria-current="page"] { color: var(--link); }

/* Mobile navigation (below 1280px, where the full menu + call button no longer fit) */
@media (max-width: 1279.98px) {
  .site-header__inner { flex-wrap: wrap; }
  .site-nav { flex-basis: 100%; order: 3; }
  .site-nav ul { padding-bottom: var(--space-4); }
  .site-nav li + li { border-top: 1px solid var(--line); }
  .site-nav a[aria-current="page"] { font-weight: 700; }
  /* Collapsed by default; nojs.css (in <noscript>) keeps it open when JS is off */
  .nav-toggle[aria-expanded="false"] ~ .site-nav { display: none; }
}

/* Desktop navigation */
@media (min-width: 1280px) {
  .nav-toggle { display: none !important; }
  .site-logo { margin-right: 0; }
  .site-nav { order: 1; margin-inline: auto; }
  .header-call { order: 2; }
  .site-nav ul { display: flex; gap: var(--space-1); }
  .site-nav a {
    position: relative;
    padding: var(--space-2) var(--space-3);
    font-size: 0.96875rem;
    white-space: nowrap;
  }
  .site-nav a::after {
    content: "";
    position: absolute;
    left: var(--space-3);
    right: var(--space-3);
    bottom: 0;
    height: 2px;
    background: var(--brand-green);
    border-radius: 2px;
    transform: scaleX(0);
    transition: transform 0.2s;
  }
  .site-nav a:hover::after,
  .site-nav a[aria-current="page"]::after { transform: scaleX(1); }
  .header-call__number { display: inline; }
  .header-call__label { display: none; }
}

@media (max-width: 420px) {
  .site-logo img { width: 150px; }
  .header-call__label { display: none; }
  .header-call.btn--sm { padding-inline: var(--space-3); }
}

/* Footer ------------------------------------------------------------------ */
.site-footer {
  background: var(--ink);
  color: #c9d8df;
  padding-block: var(--space-8) var(--space-6);
  font-size: 0.96875rem;
}
.site-footer a { color: #fff; }
.site-footer a:hover { color: var(--brand-green); }
.site-footer h2 {
  margin-bottom: var(--space-3);
  font: 600 var(--fs-sm)/1.4 var(--font-sans);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fff;
}
.site-footer__grid {
  display: grid;
  gap: var(--space-6);
}
@media (min-width: 720px) {
  .site-footer__grid { grid-template-columns: 1.3fr 1fr 1fr; }
}
.site-footer__brand img {
  width: 190px;
  margin-bottom: var(--space-4);
  padding: var(--space-3);
  background: #fff;
  border-radius: var(--radius-sm);
}
.site-footer__brand p { max-width: 34ch; }
.site-footer ul { list-style: none; display: grid; gap: var(--space-2); }
.site-footer__nav a { text-decoration: none; }
.site-footer__nav a:hover { text-decoration: underline; }
.site-footer dl { margin: 0; display: grid; gap: var(--space-3); }
.site-footer dt { font-weight: 600; color: #fff; }
.site-footer dd { margin: 0; }
.site-footer__bottom {
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid rgb(255 255 255 / 0.14);
  font-size: var(--fs-sm);
}

/* 6. Sections ------------------------------------------------------------- */

/* Home hero */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #f3f3f3 0%, #fbfbfb 100%);
}
.hero__inner {
  display: grid;
  gap: var(--space-6);
  padding-block: var(--space-8) 0;
}
.hero__title { max-width: 16ch; }
.hero__title span { color: var(--link); }
.hero__meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  color: var(--muted);
}
.hero__meta svg { width: 1.25rem; height: 1.25rem; color: var(--link); flex: none; }
.hero__media img { width: 100%; height: auto; }

@media (min-width: 900px) {
  .hero__inner {
    grid-template-columns: minmax(0, 1fr);
    min-height: min(78vh, 640px);
    align-items: center;
    padding-block: var(--space-8);
  }
  .hero__content { position: relative; z-index: 1; max-width: 560px; }
  /* Photo's subject sits on the right, its left side is plain grey */
  .hero__media {
    position: absolute;
    inset: 0 0 0 auto;
    width: min(70%, 1024px);
  }
  .hero__media img {
    height: 100%;
    object-fit: cover;
    object-position: 70% center;
    /* Fade the photo's plain left edge into the hero background */
    -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 35%);
    mask-image: linear-gradient(90deg, transparent 0%, #000 35%);
  }
}

/* Mission */
.mission__head { max-width: 46rem; margin-bottom: var(--space-7); }
.pillars {
  list-style: none;
  display: grid;
  gap: var(--space-4);
}
@media (min-width: 720px) {
  .pillars { grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }
}
.pillars .card h3 { margin: 0; font-size: 1.2rem; }
.mission__quote {
  margin: var(--space-7) 0 0;
  padding: var(--space-6);
  border-left: 4px solid var(--brand-green);
  background: var(--surface);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-family: var(--font-serif);
  font-size: var(--fs-lg);
  line-height: 1.6;
  color: var(--ink);
}

/* Understanding rheumatology */
.hands-figure {
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at 50% 55%, var(--surface-tint) 0%, var(--surface-soft) 70%);
}

/* Meet the rheumatologist */
.doctor-card {
  max-width: 380px;
  margin-inline: auto;
}
.doctor-card .media-frame { aspect-ratio: 400 / 514; }
.doctor-card figcaption {
  margin-top: var(--space-4);
  text-align: center;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--ink);
}
.doctor-card figcaption span {
  display: block;
  font: 500 var(--fs-sm)/1.5 var(--font-sans);
  color: var(--muted);
}
.doctor__highlights { margin-block: var(--space-6); }

/* Contact */
.contact { position: relative; isolation: isolate; color: #fff; }
.contact__bg { position: absolute; inset: 0; z-index: -2; }
.contact__bg img { width: 100%; height: 100%; object-fit: cover; }
.contact::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgb(11 52 66 / 0.72) 0%, rgb(11 52 66 / 0.9) 100%);
}
.contact h2, .contact .eyebrow { color: #fff; }
.contact__head { max-width: 40rem; margin-bottom: var(--space-7); }
.contact-cards {
  display: grid;
  gap: var(--space-4);
}
@media (min-width: 900px) {
  .contact-cards { grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }
}
.contact-cards .card { color: var(--text); display: flex; flex-direction: column; }
.contact-cards h3 { font-size: 1.2rem; }
.contact-cards .link-arrow { margin-top: auto; padding-top: var(--space-4); }
.contact-list { list-style: none; display: grid; gap: var(--space-2); }
.contact-list span { display: inline-block; min-width: 3.25rem; font-weight: 600; color: var(--ink); }

/* Inner page header */
.page-hero {
  background: linear-gradient(180deg, var(--surface-soft) 0%, var(--surface) 100%);
  border-bottom: 1px solid var(--line);
  padding-block: var(--space-7) var(--space-8);
}
.page-hero h1 { margin-bottom: var(--space-5); }
.page-hero .lead { max-width: 62ch; }
.page-hero__media { max-width: 460px; margin-inline: auto; }
@media (min-width: 900px) {
  .page-hero--split .container {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: var(--space-8);
    align-items: center;
  }
}
@media (max-width: 899.98px) {
  .page-hero__media { margin-top: var(--space-6); }
}

.breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0 0 var(--space-5);
  padding: 0;
  font-size: var(--fs-sm);
  color: var(--muted);
}
.breadcrumb li + li::before { content: "/"; margin-right: var(--space-2); color: var(--line); }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--link); }
.breadcrumb [aria-current] { color: var(--ink); font-weight: 500; }

/* Article body with optional sticky contents */
.article {
  display: grid;
  gap: var(--space-7);
}
@media (min-width: 1000px) {
  .article--with-toc { grid-template-columns: 240px minmax(0, 1fr); gap: var(--space-8); }
}
.toc {
  align-self: start;
  position: sticky;
  top: calc(var(--header-h) + var(--space-5));
}
.toc h2 {
  margin-bottom: var(--space-3);
  font: 600 var(--fs-sm)/1.4 var(--font-sans);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.toc ol { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--line); }
.toc a {
  display: block;
  margin-left: -2px;
  padding: var(--space-2) var(--space-4);
  border-left: 2px solid transparent;
  color: var(--text);
  text-decoration: none;
  font-size: 0.9375rem;
  line-height: 1.4;
}
.toc a:hover { color: var(--link); border-left-color: var(--brand-green); }
@media (max-width: 999.98px) {
  .toc { position: static; padding: var(--space-5); background: var(--surface-soft); border-radius: var(--radius); }
}

.article__body > * + * { margin-top: var(--space-8); }
.article-section { max-width: var(--measure); }
.article-section h2 { font-size: clamp(1.5rem, 1.3rem + 0.9vw, 2rem); }
.section-heading {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}
.section-heading .icon-badge { margin: 0; flex: none; }
.section-heading h2 { margin: 0; }

/* Image + text pairing inside articles */
.article-split { display: grid; gap: var(--space-6); align-items: center; }
@media (min-width: 760px) {
  .article-split { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: var(--space-7); }
}
.article-split figure { width: 100%; max-width: 385px; margin: 0; justify-self: center; }
.article-split .media-frame { background: #000; }

.callout {
  margin: var(--space-5) 0 0;
  padding: var(--space-5) var(--space-6);
  border-left: 4px solid var(--brand-green);
  background: var(--surface-soft);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-family: var(--font-serif);
  font-size: var(--fs-lg);
  line-height: 1.55;
  color: var(--ink);
}

/* Bulleted items rendered as soft cards */
.item-list { list-style: none; display: grid; gap: var(--space-3); margin-block: var(--space-5); }
.item-list li {
  position: relative;
  padding: var(--space-3) var(--space-4) var(--space-3) calc(var(--space-4) + 1.25rem);
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  line-height: 1.5;
}
.item-list li::before {
  content: "";
  position: absolute;
  left: var(--space-4);
  top: 1.15em;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--brand-blue);
}
.item-list--awards li::before { background: var(--brand-green); }

/* Resource links */
.resource-list { list-style: none; display: grid; gap: var(--space-4); }
@media (min-width: 760px) { .resource-list { grid-template-columns: 1fr 1fr; gap: var(--space-5); } }
.resource-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  height: 100%;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.resource-card:hover { border-color: var(--link); box-shadow: var(--shadow); }
.resource-card p { color: var(--ink); font-weight: 500; }
.resource-card a { overflow-wrap: anywhere; font-weight: 600; }
/* Whole card is clickable via the link's stretched hit area */
.resource-card a::after { content: ""; position: absolute; inset: 0; border-radius: inherit; }
.resource-card a:focus-visible { outline: none; }
.resource-card:has(a:focus-visible) { outline: 3px solid var(--focus); outline-offset: 3px; }

.clipping { max-width: 739px; margin: var(--space-8) 0 0; }
.clipping .media-frame { background: #fff; }
.clipping figcaption { margin-top: var(--space-3); font-size: var(--fs-sm); }

/* Insurance */
.insurer-groups { display: grid; gap: var(--space-5); }
@media (min-width: 760px) { .insurer-groups { grid-template-columns: repeat(3, 1fr); } }
.insurer-groups h2 { font-size: 1.25rem; margin-bottom: var(--space-4); }
.insurer-groups .item-list { margin: 0; }

/* Contact band closing each inner page */
.cta-band {
  background: var(--ink);
  color: #c9d8df;
  border-radius: var(--radius-lg);
  padding: var(--space-7) var(--space-6);
  display: grid;
  gap: var(--space-5);
}
@media (min-width: 900px) {
  .cta-band { grid-template-columns: 1fr auto; align-items: center; padding: var(--space-7) var(--space-8); }
}
.cta-band h2 { color: #fff; font-size: clamp(1.5rem, 1.3rem + 0.9vw, 2rem); margin-bottom: var(--space-3); }
.cta-band .btn--ghost { background: transparent; color: #fff; border-color: rgb(255 255 255 / 0.4); }
.cta-band .btn--ghost:hover { border-color: #fff; color: #fff; }
.cta-band .btn--primary { background: #fff; color: var(--ink); }
.cta-band .btn--primary:hover { background: var(--surface-tint); color: var(--ink); }