:root {
  --navy: #1f3a5f;
  --navy-dark: #16293f;
  --ink: #1c1c1c;
  --ink-soft: #55585e;
  --paper: #ffffff;
  --paper-soft: #f7f8fa;
  --border: #e3e6ea;
  --accent: #2783de;
  --accent-soft: #e5f2fc;
  --green: #2f7d55;
  --green-soft: #e8f1ec;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(20, 30, 45, 0.06), 0 8px 24px rgba(20, 30, 45, 0.05);
  --maxw: 960px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --navy: #7fa8d9;
    --navy-dark: #a9c6ea;
    --ink: #eef1f5;
    --ink-soft: #aab2bd;
    --paper: #14181f;
    --paper-soft: #1a1f28;
    --border: #2a303c;
    --accent: #5aa8f0;
    --accent-soft: #1c2a3a;
    --green: #6fc79a;
    --green-soft: #16261e;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

:root[data-theme="dark"] {
  --navy: #7fa8d9;
  --navy-dark: #a9c6ea;
  --ink: #eef1f5;
  --ink-soft: #aab2bd;
  --paper: #14181f;
  --paper-soft: #1a1f28;
  --border: #2a303c;
  --accent: #5aa8f0;
  --accent-soft: #1c2a3a;
  --green: #6fc79a;
  --green-soft: #16261e;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
}

:root[data-theme="light"] {
  --navy: #1f3a5f;
  --navy-dark: #16293f;
  --ink: #1c1c1c;
  --ink-soft: #55585e;
  --paper: #ffffff;
  --paper-soft: #f7f8fa;
  --border: #e3e6ea;
  --accent: #2783de;
  --accent-soft: #e5f2fc;
  --green: #2f7d55;
  --green-soft: #e8f1ec;
  --shadow: 0 1px 2px rgba(20, 30, 45, 0.06), 0 8px 24px rgba(20, 30, 45, 0.05);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--paper-soft);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

/* Top nav */
.topnav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.topnav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 12px;
  padding-bottom: 12px;
}
.topnav .brand {
  font-weight: 700;
  font-size: 15px;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}
.topnav nav {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.topnav nav a {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 8px;
}
.topnav nav a:hover { background: var(--paper-soft); color: var(--ink); }
.theme-toggle {
  border: 1px solid var(--border);
  background: var(--paper);
  color: var(--ink-soft);
  border-radius: 999px;
  width: 34px;
  height: 34px;
  cursor: pointer;
  font-size: 15px;
  flex-shrink: 0;
}

/* Hero */
.hero {
  padding: 64px 0 40px;
}
.eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 10px;
}
.hero h1 {
  font-size: clamp(32px, 5vw, 46px);
  line-height: 1.1;
  margin: 0 0 10px;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.hero .role {
  font-size: 18px;
  color: var(--ink-soft);
  margin: 0 0 20px;
}
.hero .summary {
  font-size: 16px;
  color: var(--ink-soft);
  max-width: 720px;
  margin: 0 0 24px;
}
.contact-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.contact-row a, .contact-row span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
}
.contact-row a:hover { border-color: var(--accent); color: var(--accent); }

/* Stat strip */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 32px 0 8px;
}
.stat {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}
.stat .num {
  font-size: 24px;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: -0.01em;
}
.stat .lbl {
  font-size: 12.5px;
  color: var(--ink-soft);
  margin-top: 4px;
}
@media (max-width: 700px) {
  .stat-strip { grid-template-columns: repeat(2, 1fr); }
}

/* Sections */
section.block { padding: 48px 0; border-top: 1px solid var(--border); }
section.block:first-of-type { border-top: none; }
h2.section-title {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--navy);
  margin: 0 0 24px;
}

/* Experience */
.job {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 16px;
  overflow: hidden;
}
.job-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 20px;
  cursor: pointer;
  user-select: none;
}
.job-head:hover { background: var(--paper-soft); }
.job-head .titles h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
}
.job-head .titles .sub {
  font-size: 13.5px;
  color: var(--ink-soft);
  margin-top: 2px;
}
.job-head .dates {
  font-size: 12.5px;
  color: var(--ink-soft);
  white-space: nowrap;
  font-weight: 600;
}
.job-head .chevron {
  transition: transform 0.18s ease;
  color: var(--ink-soft);
  flex-shrink: 0;
}
.job.open .chevron { transform: rotate(180deg); }
.job-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}
.job.open .job-body { max-height: 2400px; }
.role-block { padding: 0 20px 18px; }
.role-block .role-title {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--ink);
  margin: 16px 0 2px;
}
.role-block .role-dates {
  font-size: 12px;
  color: var(--ink-soft);
  font-weight: 600;
  margin-bottom: 8px;
}
ul.bullets { margin: 0; padding-left: 20px; }
ul.bullets li {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 8px;
}
ul.bullets li strong { color: var(--ink); font-weight: 700; }
ul.bullets li:last-child { margin-bottom: 0; }

/* Impact narrative */
.narrative p { font-size: 14.5px; color: var(--ink-soft); max-width: 760px; }
.layers {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
  margin: 20px 0 8px;
}
.layer-card {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  box-shadow: var(--shadow);
}
.layer-card .lname {
  font-size: 12px;
  font-weight: 800;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}
.layer-card p { margin: 0; font-size: 13px; color: var(--ink-soft); }

/* Map gallery */
.gallery-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 28px 0 16px;
}
.gallery-tabs button {
  border: 1px solid var(--border);
  background: var(--paper);
  color: var(--ink-soft);
  font: inherit;
  font-size: 12.5px;
  font-weight: 700;
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
}
.gallery-tabs button.active {
  background: var(--navy);
  border-color: var(--navy);
  color: #fff;
}
.gallery-desc {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0 0 14px;
  max-width: 760px;
}
.map-frame-wrap {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: #fff;
}
.map-frame-wrap iframe {
  width: 100%;
  height: 760px;
  border: 0;
  display: block;
}
@media (max-width: 700px) {
  .map-frame-wrap iframe { height: 900px; }
}

/* Awards / education */
.simple-list { margin: 0; padding-left: 20px; }
.simple-list li { font-size: 14px; color: var(--ink-soft); margin-bottom: 8px; }
.edu-block h3 { margin: 0 0 2px; font-size: 15px; }
.edu-block .edu-sub { font-size: 13px; color: var(--ink-soft); margin-bottom: 6px; }

/* Footer */
footer {
  padding: 40px 0 60px;
  text-align: center;
  color: var(--ink-soft);
  font-size: 12.5px;
}
footer a { color: var(--ink-soft); }