/* EDIT COLOURS: Change these CSS variables to update the whole site's palette. */
:root {
  --forest: #12372A;
  --pine: #1F4D36;
  --moss: #6B8E5A;
  --brown: #7A5C3A;
  --tan: #D8C3A5;
  --cream: #F7F3EA;
  --ink: #17251d;
  --muted: #5d675f;
  --card: rgba(255, 252, 244, 0.9);
  --shadow: 0 24px 70px rgba(18, 55, 42, 0.16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: Inter, system-ui, sans-serif;
  line-height: 1.6;
  background:
    radial-gradient(circle at 15% 10%, rgba(107, 142, 90, 0.18), transparent 26rem),
    linear-gradient(180deg, #fffaf0 0%, var(--cream) 42%, #efe4d3 100%);
}

body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
p { margin: 0; }

/* EDIT BACKGROUND VISUALS: Tweak positions, opacity, or size for the abstract immunology accents. */
.bio-field { position: fixed; inset: 0; pointer-events: none; overflow: hidden; z-index: -1; }
.bio-field span {
  position: absolute;
  width: 10rem;
  height: 10rem;
  border: 1px solid rgba(31, 77, 54, 0.16);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(107, 142, 90, 0.16), transparent 62%);
}
.bio-field span:nth-child(1) { top: 8%; left: 4%; }
.bio-field span:nth-child(2) { top: 18%; right: 7%; width: 7rem; height: 7rem; }
.bio-field span:nth-child(3) { top: 56%; left: 12%; width: 6rem; height: 6rem; }
.bio-field span:nth-child(4) { bottom: 8%; right: 12%; width: 12rem; height: 12rem; }
.bio-field span:nth-child(5) { bottom: 24%; left: 50%; width: 4rem; height: 4rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(247, 243, 234, 0.86);
  border-bottom: 1px solid rgba(31, 77, 54, 0.12);
  backdrop-filter: blur(16px);
}
.nav {
  max-width: 1180px;
  margin: 0 auto;
  min-height: 72px;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { font-weight: 800; color: var(--forest); font-size: 1.1rem; }
.nav-links { display: flex; gap: 1rem; align-items: center; }
.nav-links a {
  color: var(--muted);
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.5rem 0;
}
.nav-links a:hover, .nav-links a:focus { color: var(--forest); }
.nav-toggle { display: none; background: none; border: 0; padding: 0.45rem; cursor: pointer; }
.nav-toggle span { display: block; width: 1.65rem; height: 2px; margin: 5px 0; background: var(--forest); }

.section {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 5.5rem 0;
  scroll-margin-top: 90px;
}
.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 4rem;
  align-items: center;
  padding-top: 4rem;
}
.eyebrow {
  color: var(--brown);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  margin-bottom: 0.75rem;
}
h1, h2, h3 {
  margin: 0;
  color: var(--forest);
  line-height: 1.08;
}
h1, h2 { font-family: "Source Serif 4", Georgia, serif; }
h1 { font-size: clamp(3rem, 8vw, 6.7rem); max-width: 820px; }
h1 span { color: var(--moss); }
h2 { font-size: clamp(2rem, 4vw, 3.2rem); }
h3 { font-size: 1.12rem; }
.subtitle { margin-top: 1rem; font-size: clamp(1.1rem, 2vw, 1.45rem); color: var(--pine); font-weight: 800; }
.hero-text { margin-top: 1rem; max-width: 650px; font-size: 1.08rem; color: var(--muted); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 2rem; }
.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(31, 77, 54, 0.24);
  border-radius: 999px;
  padding: 0.75rem 1.1rem;
  color: var(--forest);
  font-weight: 800;
  background: rgba(255, 255, 255, 0.45);
  transition: transform 180ms ease, background 180ms ease, box-shadow 180ms ease;
}
.button:hover { transform: translateY(-2px); box-shadow: var(--shadow); background: white; }
.button.primary { background: var(--forest); color: var(--cream); border-color: var(--forest); }

.profile-panel { position: relative; display: grid; gap: 1rem; justify-items: center; }
.profile-photo {
  width: min(78vw, 360px);
  aspect-ratio: 1;
  border-radius: 38% 62% 48% 52%;
  display: block;
  object-fit: cover;
  object-position: center;
  background:
    radial-gradient(circle at 25% 20%, rgba(216, 195, 165, 0.55), transparent 26%),
    linear-gradient(135deg, var(--forest), var(--moss));
  box-shadow: var(--shadow);
}
.signal-card, .timeline-item, .project-card, .skills-grid article, .education-list article, .achievement-list article, .contact-card {
  background: var(--card);
  border: 1px solid rgba(31, 77, 54, 0.12);
  border-radius: 8px;
  box-shadow: 0 14px 40px rgba(18, 55, 42, 0.08);
}
.signal-card { max-width: 380px; padding: 1.25rem; }
.signal-card strong { color: var(--forest); display: block; margin-bottom: 0.35rem; }

.split { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 3rem; align-items: start; }
.split > p { font-size: 1.08rem; color: var(--muted); }
.section-heading { max-width: 760px; margin-bottom: 2rem; }
.timeline { display: grid; gap: 1rem; position: relative; }
.timeline-item { padding: 1.35rem; border-left: 5px solid var(--moss); }
.date { color: var(--brown); font-size: 0.88rem; font-weight: 800; }
.meta { margin: 0.4rem 0 0.55rem; color: var(--pine); font-weight: 700; }

.card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.project-card { padding: 1.35rem; transition: transform 180ms ease, box-shadow 180ms ease; }
.project-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.project-card p { color: var(--muted); margin-top: 0.65rem; }
.tags { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-top: 1rem; }
.tags span {
  border-radius: 999px;
  background: rgba(107, 142, 90, 0.16);
  color: var(--forest);
  padding: 0.32rem 0.62rem;
  font-size: 0.78rem;
  font-weight: 800;
}
.compact .project-card { min-height: 180px; }

.skills-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 1rem; }
.skills-grid article { padding: 1rem; }
.skills-grid p, .education-list p, .achievement-list p, .contact-section p { color: var(--muted); margin-top: 0.5rem; }
.education-list, .achievement-list { display: grid; gap: 1rem; }
.education-list article, .achievement-list article { padding: 1.25rem; }
.achievement-list strong { display: block; color: var(--forest); margin-top: 0.2rem; }
.achievement-list span { color: var(--brown); font-weight: 800; font-size: 0.88rem; }

.contact-section { display: grid; grid-template-columns: 1fr minmax(280px, 420px); gap: 2rem; align-items: start; }
.contact-card { display: grid; gap: 0.7rem; padding: 1.25rem; }
.contact-card a { color: var(--pine); font-weight: 800; }
.contact-card a:hover { color: var(--brown); }
footer { padding: 2rem 1rem; text-align: center; color: var(--muted); border-top: 1px solid rgba(31, 77, 54, 0.12); }

@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: fixed;
    inset: 72px 0 auto 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    background: var(--cream);
    border-bottom: 1px solid rgba(31, 77, 54, 0.12);
  }
  .nav-links.is-open { display: flex; }
  .nav-links a { padding: 0.85rem 0.5rem; }
  .hero, .split, .contact-section { grid-template-columns: 1fr; }
  .hero { gap: 2.25rem; min-height: auto; }
  .card-grid, .skills-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .section { width: min(100% - 1.2rem, 1180px); padding: 4rem 0; }
  .hero-actions .button { width: 100%; }
  h1 { font-size: 3rem; }
}