/* AllergyMD — patient-reference library
   Quiet medical-education reading, not a clinic funnel. */

:root {
  --paper: #f4efe6;
  --paper-2: #fbf8f2;
  --ink: #24201b;
  --muted: #5e574e;
  --faint: #8a8276;
  --line: #ddd4c6;
  --line-strong: #c9bead;
  --brand: #1c4740;
  --brand-deep: #12332e;
  --link: #21564d;
  --link-hover: #0e2f2a;
  --card: #fffcf7;
  --chip: #e7eee9;
  --focus: #c45c26;
  --max: 72rem;
  --measure: 42rem;
  --radius: 10px;
  --font-ui: "Source Sans 3", "Source Sans Pro", "Segoe UI", system-ui, sans-serif;
  --font-body: "Source Serif 4", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  font-size: 18px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-body);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--link); text-underline-offset: 0.18em; }
a:hover { color: var(--link-hover); }
a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 0.75rem;
  top: -40px;
  background: var(--brand);
  color: #fff;
  padding: 0.4rem 0.7rem;
  z-index: 20;
}
.skip:focus { top: 0.75rem; }

.wrap {
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
}

/* Header */
.site-header {
  background: var(--paper-2);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1rem 0 0.95rem;
  flex-wrap: wrap;
}

.brand {
  text-decoration: none;
  color: var(--brand-deep);
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  min-width: 10rem;
}
.brand:hover { color: var(--brand); }
.brand-name {
  font-family: var(--font-ui);
  font-weight: 700;
  letter-spacing: 0.04em;
  font-size: 1.15rem;
  line-height: 1.2;
}
.brand-tag {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

.nav-primary {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 0.35rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-ui);
  font-size: 0.95rem;
}
.nav-primary a {
  display: inline-block;
  text-decoration: none;
  color: var(--ink);
  padding: 0.38rem 0.7rem;
  border-radius: 999px;
  font-weight: 600;
}
.nav-primary a:hover { background: var(--chip); color: var(--brand-deep); }
.nav-primary a[aria-current="page"] {
  background: var(--chip);
  color: var(--brand-deep);
}
.nav-primary a.nav-quiet {
  font-weight: 500;
  color: var(--muted);
  background: none;
  border-radius: 0;
  padding-inline: 0.55rem;
}
.nav-primary a.nav-quiet:hover {
  color: var(--brand);
  background: none;
  text-decoration: underline;
}

/* Main */
.site-main {
  flex: 1;
  padding: 2.1rem 0 3.5rem;
}

.prose {
  max-width: var(--measure);
}
.prose.wide { max-width: 58rem; }

.prose > h1:first-child {
  margin-top: 0;
}

h1, h2, h3, h4 {
  font-family: var(--font-ui);
  color: var(--brand-deep);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.015em;
}
h1 {
  font-size: clamp(1.7rem, 2.4vw, 2.15rem);
  margin: 0 0 0.85rem;
}
h2 {
  font-size: 1.28rem;
  margin: 2.1rem 0 0.7rem;
  padding-top: 0.4rem;
}
h3 {
  font-size: 1.05rem;
  margin: 1.6rem 0 0.5rem;
}
p { margin: 0 0 1rem; }
.lede {
  font-size: 1.08rem;
  color: var(--ink);
}
.prose ul, .prose ol {
  margin: 0 0 1.15rem;
  padding-left: 1.2rem;
}
.prose li { margin: 0.28rem 0; }
.prose li ul { margin: 0.2rem 0 0.4rem; }
hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 2rem 0;
}
code {
  font-family: ui-monospace, "Cascadia Code", "SF Mono", Menlo, monospace;
  font-size: 0.86em;
  background: var(--chip);
  padding: 0.08em 0.32em;
  border-radius: 4px;
}
.prose strong { color: var(--brand-deep); }

.back {
  margin-top: 2rem;
  font-family: var(--font-ui);
  font-size: 0.92rem;
}

/* Video cards */
.video-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
  margin: 1.1rem 0 1.6rem;
}
@media (min-width: 840px) {
  .wide .video-grid { grid-template-columns: 1fr 1fr; }
}
.video-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1rem 1.05rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.video-card h3 {
  margin: 0 0 0.15rem;
  font-size: 1rem;
  letter-spacing: 0;
}
.video-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}
.video-embed {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #111;
  border-radius: 6px;
  overflow: hidden;
  margin: 0.45rem 0 0.15rem;
}
.video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
.prose > .video-embed {
  max-width: 36rem;
  margin: 1rem 0 1.4rem;
}

/* Photos */
.image-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0 0 1.25rem;
}
.image-row img {
  width: 6.2rem;
  height: 6.2rem;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: #fff;
}
.page-figure {
  margin: 0 0 1.2rem;
  max-width: 22rem;
}
.page-figure.small { max-width: 10rem; }
.page-figure img {
  border-radius: 8px;
  border: 1px solid var(--line);
}

.photo-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(10.5rem, 1fr));
  gap: 0.75rem;
  margin: 0.8rem 0 1.5rem;
}
.photo-gallery a {
  display: block;
  text-decoration: none;
  color: var(--muted);
  font-family: var(--font-ui);
  font-size: 0.78rem;
}
.photo-gallery img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--line);
  margin-bottom: 0.35rem;
  background: #eee;
}
.photo-gallery figcaption { line-height: 1.3; }

.about-lede {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 1.25rem;
  align-items: start;
  margin-bottom: 0.4rem;
}
.headshot img {
  width: 7.5rem;
  height: 7.5rem;
  object-fit: cover;
  object-position: 50% 18%;
  border-radius: 8px;
  border: 1px solid var(--line);
}
@media (max-width: 640px) {
  .about-lede { grid-template-columns: 1fr; }
  .headshot img { width: 6.2rem; height: 6.2rem; }
}

.byline {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  margin: 0 0 1rem;
}
.byline img {
  width: 3.4rem;
  height: 3.4rem;
  object-fit: cover;
  object-position: 50% 18%;
  border-radius: 50%;
  border: 1px solid var(--line);
  flex-shrink: 0;
}

.pub-block {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem 1.1rem;
  margin: 0 0 1.15rem;
}
.pub-block h2 { margin-top: 0; font-size: 1.05rem; }
.pub-block img {
  max-width: 16rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  margin: 0.5rem 0 0.7rem;
  background: #fff;
}
.pdf-link {
  font-family: var(--font-ui);
  font-size: 0.92rem;
  margin: 0.2rem 0 0;
}

.topic-groups h3 { margin-top: 1.4rem; }
.holding {
  color: var(--muted);
}

.appoint-line {
  font-family: var(--font-ui);
  color: var(--muted);
  font-size: 0.95rem;
}

/* Footer */
.site-footer {
  background: var(--brand-deep);
  color: #d7e4e0;
  padding: 1.7rem 0 2rem;
  font-family: var(--font-ui);
  font-size: 0.88rem;
  line-height: 1.55;
}
.site-footer a { color: #eef6f3; }
.site-footer a:hover { color: #fff; }
.footer-brand {
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #fff;
  margin: 0 0 0.35rem;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 0.9rem;
  margin: 0.7rem 0 0.85rem;
  padding: 0;
  list-style: none;
}
.footer-links a { text-decoration: none; }
.footer-links a:hover { text-decoration: underline; }
.disclaimer {
  color: #b7c7c2;
  max-width: 46rem;
  margin: 0.9rem 0 0;
  font-size: 0.82rem;
}
.footer-appoint { margin: 0.4rem 0 0; color: #c5d4d0; }

@media print {
  .site-header, .site-footer, .skip { display: none; }
  body { background: #fff; color: #000; }
  a { color: inherit; text-decoration: underline; }
  .video-embed { display: none; }
}