/* ---------- Base ---------- */
:root {
  --ink: #1a1a1a;
  --muted: #5c5c5c;
  --faint: #8a8a8a;
  --line: #e6e3de;
  --bg: #fdfcfa;
  --accent: #a51c30; /* Harvard crimson */
  --accent-soft: #f4e6e8;
  --max-width: 780px;
  font-size: 16px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
}

h1 {
  font-size: 2rem;
  margin: 0 0 6px;
}

h2 {
  font-size: 1.3rem;
  margin: 0 0 4px;
}

h3 {
  font-size: 1.05rem;
  margin: 0 0 2px;
}

p {
  margin: 0 0 16px;
  color: var(--ink);
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

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

.eyebrow {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  color: var(--faint);
  font-weight: 600;
}

/* ---------- Header / Nav ---------- */
header.site-header {
  border-bottom: 1px solid var(--line);
  padding: 22px 0;
}

header.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.brand {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ink);
  border-bottom: none;
}

.brand:hover {
  border-bottom: none;
  color: var(--accent);
}

nav.main-nav {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.9rem;
}

nav.main-nav a {
  color: var(--muted);
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}

nav.main-nav a:hover,
nav.main-nav a.active {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

/* ---------- Main / Sections ---------- */
main {
  padding: 56px 0 40px;
}

section {
  margin-bottom: 44px;
}

section:last-child {
  margin-bottom: 0;
}

.page-title {
  margin-bottom: 36px;
}

.page-title p {
  color: var(--muted);
  margin-bottom: 0;
}

/* ---------- Hero (home) ---------- */
.hero {
  display: flex;
  gap: 36px;
  align-items: center;
  margin-bottom: 48px;
}

.hero img {
  width: 168px;
  height: 168px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--line);
}

.hero .hero-text h1 {
  margin-bottom: 8px;
}

.hero .role {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--accent);
  font-size: 0.98rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.hero .location {
  color: var(--faint);
  font-size: 0.9rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

@media (max-width: 560px) {
  .hero {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }
}

/* ---------- Quick links / cards ---------- */
.quick-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}

.quick-links a {
  display: block;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.quick-links a:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.quick-links .qtitle {
  font-weight: 600;
  margin-bottom: 3px;
}

.quick-links .qdesc {
  color: var(--faint);
  font-size: 0.85rem;
}

/* ---------- Entry blocks (research / experience / projects) ---------- */
.entry {
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.entry:first-of-type {
  border-top: none;
  padding-top: 0;
}

.entry-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px 16px;
  margin-bottom: 6px;
}

.entry-head .org {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--muted);
  font-size: 0.92rem;
}

.entry-head .when {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--faint);
  font-size: 0.82rem;
  white-space: nowrap;
}

.entry ul {
  margin: 10px 0 0;
  padding-left: 20px;
}

.entry li {
  margin-bottom: 6px;
  color: var(--ink);
}

.tags {
  margin-top: 10px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.72rem;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 20px;
  padding: 3px 10px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 11px 20px;
  border-radius: 6px;
  border: 1px solid var(--ink);
  color: var(--ink);
}

.btn:hover {
  border-bottom: 1px solid var(--ink);
  background: var(--ink);
  color: #fff;
}

.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn.primary:hover {
  border-bottom: 1px solid var(--accent);
  background: #841623;
  border-color: #841623;
}

.btn-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 18px 0;
}

/* ---------- CV page ---------- */
.cv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

@media (max-width: 620px) {
  .cv-grid {
    grid-template-columns: 1fr;
  }
}

.cv-block h3 {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  color: var(--faint);
  margin-bottom: 12px;
}

.cv-block .item {
  margin-bottom: 14px;
}

.cv-block .item .t {
  font-weight: 600;
}

.cv-block .item .s {
  color: var(--muted);
  font-size: 0.9rem;
}

.pdf-embed {
  width: 100%;
  height: 640px;
  border: 1px solid var(--line);
  border-radius: 8px;
  margin-top: 24px;
}

/* ---------- Contact ---------- */
.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.contact-list li {
  padding: 16px 0;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.contact-list li:first-child {
  border-top: none;
}

.contact-list .label {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--faint);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.contact-list .value {
  font-size: 1.02rem;
}

/* ---------- Footer ---------- */
footer.site-footer {
  border-top: 1px solid var(--line);
  padding: 26px 0 40px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--faint);
  font-size: 0.82rem;
}

footer.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

footer.site-footer a {
  color: var(--faint);
}

footer.site-footer a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}