/* ---------- Theme tokens ---------- */
:root {
  --bg: #ffffff;
  --bg-alt: #f5f6f8;
  --surface: #ffffff;
  --text: #16181d;
  --muted: #5b626e;
  --line: #e4e7ec;
  --accent: #2f6fed;
  --accent-ink: #ffffff;
  --shadow: 0 1px 2px rgba(16,24,40,.06), 0 6px 24px rgba(16,24,40,.06);
  --mono: ui-monospace, "SF Mono", "Cascadia Code", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --maxw: 1040px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1116;
    --bg-alt: #141922;
    --surface: #161b24;
    --text: #e8eaed;
    --muted: #9aa4b2;
    --line: #262d38;
    --accent: #5b8dff;
    --accent-ink: #0e1116;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 30px rgba(0,0,0,.35);
  }
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.4rem, 6vw, 3.6rem); margin: .2em 0 .3em; }
h2 { font-size: clamp(1.5rem, 3.5vw, 2rem); margin: 0 0 .6em; }
h3 { font-size: 1.15rem; margin: 0 0 .3em; }

.eyebrow {
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: .78rem;
  color: var(--accent);
  margin: 0;
}

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 62px; }
.brand {
  font-family: var(--mono); font-weight: 700; font-size: 1.05rem;
  color: var(--text); border: 1.5px solid var(--line);
  width: 38px; height: 38px; display: grid; place-items: center; border-radius: 9px;
}
.brand:hover { text-decoration: none; border-color: var(--accent); color: var(--accent); }
.nav nav { display: flex; gap: 28px; }
.nav nav a {
  color: var(--muted); font-size: .95rem; font-weight: 500;
}
.nav nav a:hover { color: var(--text); text-decoration: none; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 11px 20px; border-radius: 10px; font-weight: 600; font-size: .95rem;
  border: 1.5px solid transparent; cursor: pointer; transition: transform .04s ease, background .15s ease;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.05); }
.btn-ghost { border-color: var(--line); color: var(--text); background: transparent; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 8px 14px; font-size: .85rem; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }

/* ---------- Hero ---------- */
.hero { padding: clamp(48px, 9vw, 96px) 0; }
.hero-inner { display: grid; grid-template-columns: 1.3fr .9fr; gap: 56px; align-items: center; }
.lede { font-size: 1.12rem; color: var(--muted); max-width: 44ch; margin: 0; }
.hero-photo { width: 100%; max-width: 340px; margin-left: auto; }
.hero-photo img {
  width: 100%; height: auto;
  filter: drop-shadow(0 12px 28px rgba(16, 24, 40, .22));
}

/* ---------- Sections ---------- */
.section { padding: clamp(48px, 8vw, 88px) 0; border-top: 1px solid var(--line); }
.section-alt { background: var(--bg-alt); }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 36px; }
.section-head h2 { margin: 0; }

/* About */
.about-inner { display: grid; grid-template-columns: .8fr 1.2fr; gap: 48px; align-items: center; }
.about-photo img { border-radius: 14px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.about-text p { margin: 0 0 1em; color: var(--muted); }
.about-text p:first-of-type { color: var(--text); }

/* ---------- Jobs ---------- */
.job {
  display: grid; grid-template-columns: 260px 1fr; gap: 32px;
  padding: 28px 0; border-top: 1px solid var(--line);
}
.job:first-of-type { border-top: none; padding-top: 0; }
.company { margin: 0 0 4px; font-size: 1.35rem; }
.role { margin: 0 0 8px; font-weight: 600; color: var(--text); }
.where { margin: 0; color: var(--muted); font-size: .92rem; }
.when { margin: 2px 0 0; font-family: var(--mono); font-size: .82rem; color: var(--muted); letter-spacing: .02em; }
.job-body ul { margin: 0; padding-left: 1.1em; }
.job-body li { margin: 0 0 .6em; color: var(--muted); }
.job-body li::marker { color: var(--accent); }

/* Cards */
.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 40px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: 14px;
  padding: 26px 28px; box-shadow: var(--shadow);
}
.skills { margin: 0; display: grid; grid-template-columns: auto; gap: 2px 0; }
.skills dt { font-family: var(--mono); font-size: .74rem; text-transform: uppercase; letter-spacing: .1em; color: var(--accent); margin-top: 14px; }
.skills dd { margin: 2px 0 0; color: var(--muted); }
.edu-school { margin: 0; font-weight: 600; }
.edu-detail { margin: 4px 0 14px; color: var(--muted); }
.honors { margin: 0; padding-left: 1.1em; }
.honors li { color: var(--muted); margin-bottom: .4em; }
.honors li::marker { color: var(--accent); }

/* Contact */
.contact-lede { color: var(--muted); max-width: 52ch; margin: 0 0 28px; }
.contact-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; max-width: 520px; }
.contact-list li { display: grid; grid-template-columns: 110px 1fr; align-items: baseline; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.contact-list .label { font-family: var(--mono); font-size: .74rem; text-transform: uppercase; letter-spacing: .12em; color: var(--muted); }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 28px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; color: var(--muted); font-size: .9rem; }
.footer a { color: var(--muted); }
.footer a:hover { color: var(--accent); }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .hero-photo { order: -1; }
  .hero-photo img { margin: 0 auto; max-width: 220px; }
  .about-inner { grid-template-columns: 1fr; gap: 28px; }
  .about-photo { max-width: 280px; }
  .job { grid-template-columns: 1fr; gap: 14px; }
  .cards { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .nav nav { gap: 18px; }
  .contact-list li { grid-template-columns: 1fr; }
  .contact-list .label { margin-bottom: 2px; }
}