:root {
  --bg: #f1f0f4;
  --bg-alt: #f7f6fa;
  --surface: #ffffff;
  --text: #211b26;
  --text-muted: #665b6c;
  --border: #e3dfe9;
  --accent: #341539;
  --accent-hover: #4b1f55;
  --accent-soft: #f1e7f3;
  --accent-soft-border: #e1cde6;
  --radius: 12px;
  --wrap: 960px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--accent);
  text-decoration: none;
}

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(52, 21, 57, 0.28);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -56px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}

.skip-link:focus {
  top: 12px;
  color: #fff;
}

h1,
h2,
h3 {
  font-weight: 700;
  line-height: 1.25;
  margin: 0 0 16px;
}

h1 {
  font-size: 2.5rem;
}
h2 {
  font-size: 1.9rem;
}
h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

h4 {
  margin: 0 0 6px;
  font-size: 0.9rem;
  line-height: 1.3;
}

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

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(241, 240, 244, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  padding-bottom: 18px;
}

.logo {
  font-weight: 800;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  color: var(--text);
}

.logo:hover {
  color: var(--accent);
}

.site-nav {
  display: flex;
  gap: 28px;
}

.site-nav a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
}

.site-nav a:hover {
  color: var(--accent);
}

/* Hero */

.hero {
  padding: 72px 0 56px;
}

.hero-inner {
  display: flex;
  align-items: center;
  gap: 56px;
}

.hero-text {
  flex: 1 1 auto;
  min-width: 0;
}

.eyebrow {
  text-transform: uppercase;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.hero-text p {
  max-width: 640px;
}

.hero-photo {
  flex: 0 0 auto;
}

.hero-photo img {
  width: 260px;
  height: 260px;
  border-radius: 50%;
  object-fit: cover;
  object-position: 50% 22%;
  border: 4px solid var(--surface);
  box-shadow: 0 8px 28px rgba(52, 21, 57, 0.18);
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin: 28px 0 22px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(52, 21, 57, 0.25);
}

.btn-secondary {
  background: var(--surface);
  color: var(--accent);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
}

.contact-row li {
  display: flex;
  align-items: center;
  gap: 7px;
}

.contact-row svg {
  width: 16px;
  height: 16px;
  fill: var(--text-muted);
}

.contact-row a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
}
.contact-row a:hover {
  color: var(--accent);
}

.contact-row-large a {
  font-size: 1.05rem;
}

/* Sections */

.section {
  padding: 64px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section h2 {
  position: relative;
  padding-bottom: 14px;
  margin-bottom: 28px;
}

.section h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 46px;
  height: 4px;
  border-radius: 2px;
  background: var(--accent);
}

.section-intro {
  max-width: 680px;
  color: var(--text-muted);
}

/* About */

.about-overview {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 48px;
  margin-bottom: 36px;
}

.honors-section {
  margin-bottom: 40px;
}

.honors-section > h3 {
  margin-bottom: 16px;
}

.honors-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 22px;
}

.honor-item {
  border-top: 1px solid var(--border);
  padding: 14px 4px 2px 0;
}

.honor-item h4 {
  color: var(--text);
  font-size: 0.95rem;
  margin-bottom: 5px;
}

.honor-item p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin: 0;
}

.skills-heading {
  margin-top: 8px;
}

.skill-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-chips li {
  background: var(--accent-soft);
  border: 1px solid var(--accent-soft-border);
  color: var(--accent);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
}

.interest-chips {
  margin-bottom: 34px;
}

.skill-groups-heading {
  margin-top: 0;
}

.skill-groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.skill-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
}

.skill-group h4 {
  color: var(--accent);
}

.skill-group p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Cards (Research / Experience) */

.card-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
}

.card-head {
  margin-bottom: 12px;
}

.card-meta {
  display: block;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 4px;
}

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

.card-links {
  margin-top: 14px;
  font-size: 0.92rem;
  font-weight: 600;
}

.card-links a {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.ta-list {
  margin: 10px 0 14px;
}

.ta-list li {
  padding-left: 16px;
  position: relative;
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.ta-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

/* Projects */

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.project-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease;
}

.project-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(52, 21, 57, 0.12);
}

.project-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 8px;
}

.tag-list li {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 3px 10px;
  border-radius: 999px;
}

/* Contact */

.contact-section {
  text-align: left;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

.site-footer p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Responsive */

@media (max-width: 900px) {
  .project-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .hero {
    padding: 48px 0 44px;
  }

  .hero-inner {
    flex-direction: column-reverse;
    gap: 28px;
  }

  .hero-photo img {
    width: 190px;
    height: 190px;
  }

  .hero-text .eyebrow,
  .hero-text h1 {
    text-align: center;
  }

  .hero-actions,
  .hero-text > .contact-row {
    justify-content: center;
  }

  .about-overview,
  .honors-grid,
  .skill-groups {
    grid-template-columns: 1fr;
  }

  .about-overview {
    gap: 22px;
  }

  .section h2 {
    text-align: center;
  }

  .section h2::after {
    left: 50%;
    transform: translateX(-50%);
  }

  .about-block h3,
  .honors-section > h3,
  .skills-heading {
    text-align: center;
  }

  .skill-chips {
    justify-content: center;
  }

  .contact-section {
    text-align: center;
  }

  .contact-section .section-intro {
    margin-left: auto;
    margin-right: auto;
  }

  .contact-section .contact-row {
    justify-content: center;
  }

  .site-footer {
    text-align: center;
  }

  h1 {
    font-size: 2rem;
  }

  .card {
    padding: 22px;
  }
}

@media (max-width: 640px) {
  .site-header {
    position: static;
    backdrop-filter: none;
  }

  .header-inner {
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding-top: 14px;
    padding-bottom: 12px;
    text-align: center;
  }

  .site-nav {
    justify-content: center;
    flex-wrap: wrap;
    gap: 2px 10px;
  }

  .site-nav a {
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    padding: 4px 5px;
    font-size: 0.85rem;
  }

  .wrap {
    padding-left: 20px;
    padding-right: 20px;
  }

  .section {
    padding: 52px 0;
  }

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

  .contact-row {
    gap: 12px 18px;
  }

  .contact-row a {
    overflow-wrap: anywhere;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}