:root {
  --paper: #f5eee3;
  --paper-deep: #eadfce;
  --ink: #29231e;
  --muted: #6d6258;
  --line: #d8c8b6;
  --accent: #744532;
  --accent-dark: #563124;
  --white: #fffaf2;
  --content: 1040px;
  --reading: 760px;
  --shadow: 0 18px 50px rgba(45, 37, 29, 0.08);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 0%, rgba(126, 74, 49, 0.07), transparent 30rem),
    var(--paper);
  font-family: "Palatino Linotype", "Book Antiqua", Palatino, "URW Palladio L", serif;
  font-size: 18px;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
}

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

a:hover { color: var(--accent-dark); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  z-index: 100;
  padding: .6rem .85rem;
  background: var(--ink);
  color: white;
}

.site-header {
  max-width: var(--content);
  margin: 0 auto;
  padding: 2.2rem 1.5rem 1.25rem;
  text-align: center;
}

.name {
  margin: 0;
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  line-height: 1.06;
  font-weight: 500;
  letter-spacing: -0.025em;
}

.position {
  margin: .55rem 0 .2rem;
  color: var(--muted);
  font-size: 1.03rem;
}

.aos {
  margin: 0;
  color: var(--muted);
  font-size: .94rem;
}

.primary-nav,
.contact-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .45rem 1.15rem;
}

.primary-nav {
  margin-top: 1.3rem;
  padding-top: 1.05rem;
  border-top: 1px solid var(--line);
}

.contact-nav {
  margin-top: .55rem;
  font-size: .92rem;
}

.primary-nav a,
.contact-nav a {
  text-decoration: none;
}

.primary-nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
}

main {
  max-width: var(--content);
  margin: 0 auto;
  padding: 2.6rem 1.5rem 5rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 290px;
  gap: clamp(2.2rem, 7vw, 5.8rem);
  align-items: center;
  min-height: 480px;
}

.eyebrow {
  margin: 0 0 .55rem;
  color: var(--accent);
  font-family: Arial, Helvetica, sans-serif;
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.hero h2,
.page-title {
  margin: 0 0 1.1rem;
  font-size: clamp(1.85rem, 4vw, 2.8rem);
  line-height: 1.18;
  font-weight: 500;
  letter-spacing: -0.02em;
}

.hero-copy p {
  max-width: 690px;
  margin: 0 0 1rem;
}

.headshot-frame {
  margin: 0;
}

.headshot-placeholder {
  aspect-ratio: 4 / 5;
  display: grid;
  place-items: center;
  padding: 1.8rem;
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: var(--shadow);
  color: var(--muted);
  text-align: center;
  font-family: Arial, Helvetica, sans-serif;
  font-size: .82rem;
  line-height: 1.5;
}

.headshot-frame img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  display: block;
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: var(--shadow);
}

.callout {
  margin-top: 3.2rem;
  padding: 1.35rem 1.5rem;
  border-left: 3px solid var(--accent);
  background: rgba(255, 253, 249, .62);
}

.callout p { margin: 0; }

.page-intro {
  max-width: var(--reading);
  margin-bottom: 2.7rem;
}

.section-label {
  margin: 3.2rem 0 1.15rem;
  padding-bottom: .55rem;
  border-bottom: 1px solid var(--line);
  font-family: Arial, Helvetica, sans-serif;
  font-size: .8rem;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.paper-list {
  display: grid;
  gap: 1.1rem;
}

.paper {
  padding: 1.35rem 1.45rem 1.45rem;
  border: 1px solid var(--line);
  background: rgba(255, 253, 249, .72);
}

.paper h3 {
  margin: 0;
  font-size: 1.22rem;
  line-height: 1.35;
  font-weight: 600;
}

.paper-meta {
  margin: .22rem 0 .7rem;
  color: var(--accent);
  font-family: Arial, Helvetica, sans-serif;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.paper p:last-child { margin-bottom: 0; }

.course-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem;
}

.course {
  padding: 1.2rem 1.35rem;
  border-top: 2px solid var(--accent);
  background: rgba(255, 253, 249, .62);
}

.course h3 {
  margin: 0 0 .35rem;
  font-size: 1.08rem;
  line-height: 1.35;
}

.course p {
  margin: 0;
  color: var(--muted);
  font-size: .94rem;
}

.document-links {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.35rem;
}

.button {
  display: inline-block;
  padding: .62rem .9rem;
  border: 1px solid var(--accent);
  color: var(--accent);
  text-decoration: none;
  font-family: Arial, Helvetica, sans-serif;
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .02em;
}

.button:hover {
  background: var(--accent);
  color: white;
}

.site-footer {
  max-width: var(--content);
  margin: 0 auto;
  padding: 1.4rem 1.5rem 2.4rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: Arial, Helvetica, sans-serif;
  font-size: .78rem;
  text-align: center;
}

@media (max-width: 760px) {
  body { font-size: 17px; }

  .site-header { padding-top: 1.5rem; }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .headshot-frame {
    width: min(100%, 320px);
    order: -1;
    margin: 0 auto;
  }

  .course-grid { grid-template-columns: 1fr; }

  main { padding-top: 1.8rem; }
}

.pdf-viewer {
  width: 100%;
  height: min(82vh, 1050px);
  min-height: 680px;
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: var(--shadow);
}

.pdf-fallback {
  margin-top: 1rem;
  color: var(--muted);
  font-size: .92rem;
}

@media (max-width: 760px) {
  .pdf-viewer {
    min-height: 520px;
    height: 72vh;
  }
}

.course h3 a {
  color: inherit;
  text-decoration-color: var(--line);
  text-decoration-thickness: 1px;
  text-underline-offset: .18em;
}

.course h3 a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

.syllabus-title {
  margin: 0 0 .25rem;
  font-size: 1.45rem;
  line-height: 1.3;
  font-weight: 500;
}