:root {
  --bg: #080b0c;
  --bg-2: #0e1315;
  --ink: #e9efec;
  --ink-soft: #a3b2ac;
  --muted: #5f716c;
  --line: #1a2623;
  --accent: #2ee6a0;
  --accent-2: #12b982;
  --accent-soft: rgba(46, 230, 160, 0.08);
  --card: rgba(255, 255, 255, 0.018);
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  --maxw: 1080px;
  --rail-w: 216px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  position: relative;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
em { font-style: italic; }

/* ===== tech background ===== */
.bg-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(46,230,160,0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(46,230,160,0.045) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 85%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 85%);
}
.bg-glow {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(700px 500px at 78% 8%, rgba(46,230,160,0.10), transparent 70%),
    radial-gradient(600px 600px at 12% 40%, rgba(18,120,180,0.06), transparent 70%);
}
.rail, main, .foot { position: relative; z-index: 2; }

/* ===== LEFT VERTICAL RAIL ===== */
.sb-mono { font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.2px; }
.rail {
  position: fixed; top: 0; left: 0; z-index: 50;
  width: var(--rail-w); height: 100vh;
  display: flex; flex-direction: column; justify-content: space-between;
  padding: 30px 26px;
  background: transparent;
}
.rail-top { display: flex; flex-direction: column; gap: 14px; }
.rail-id {
  display: inline-flex; align-items: baseline;
  color: var(--ink); font-family: var(--mono); font-weight: 600; font-size: 17px;
  letter-spacing: 1.5px; text-decoration: none; transition: color .2s;
}
.rail-id::after { content: "_"; color: var(--accent); margin-left: 1px; animation: caret 1.1s steps(1) infinite; }
.rail-id:hover { color: var(--accent); }
.rail-meta { display: flex; flex-direction: column; gap: 3px; color: var(--muted); }
.rail-meta span:first-child { color: var(--ink); }
.rail-role { font-size: 11px; }

.rail-nav { display: flex; flex-direction: column; gap: 3px; }
.rail-nav a {
  display: flex; align-items: baseline; gap: 10px;
  color: var(--ink-soft); text-decoration: none; padding: 5px 0;
  transition: color .15s, padding-left .15s;
}
.rail-nav a:hover { color: var(--accent); padding-left: 5px; }
.rail-num { color: var(--muted); font-size: 10.5px; }
.rail-nav a:hover .rail-num { color: var(--accent); }

.rail-bottom { display: flex; flex-direction: column; gap: 8px; color: var(--muted); }
.rail-clock { color: var(--ink-soft); }
.rail-status { display: inline-flex; align-items: center; gap: 6px; color: var(--accent); }
.sb-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px var(--accent); animation: dotpulse 2s infinite; }
@keyframes dotpulse { 0%,100% { opacity: 1; } 50% { opacity: 0.35; } }

/* ===== layout ===== */
main, .foot { margin-left: var(--rail-w); }
.hero, .section { max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(20px, 5vw, 56px); }
.section { padding-top: clamp(64px, 10vw, 128px); }

/* ===== HERO ===== */
.hero {
  display: grid; grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(28px, 5vw, 64px); align-items: center;
  padding-top: clamp(48px, 8vw, 96px); padding-bottom: 24px;
}
.eyebrow {
  font-family: var(--mono); font-size: 13px; letter-spacing: 0.3px;
  color: var(--accent); margin-bottom: 22px; min-height: 1.2em;
}
.eyebrow.typing::after {
  content: "\2588"; margin-left: 1px;
  animation: caret 0.85s steps(1) infinite;
}
@keyframes caret { 0%,100% { opacity: 1; } 50% { opacity: 0; } }
.hero h1 {
  font-family: var(--mono); font-weight: 500;
  font-size: clamp(34px, 5.2vw, 60px); line-height: 1.06;
  letter-spacing: -2px; margin-bottom: 22px;
}
.hero h1 em { color: var(--accent); font-style: normal; }
.lead { font-size: clamp(16px, 2vw, 19px); color: var(--ink-soft); max-width: 46ch; }
.inline-link { color: var(--accent); text-decoration: none; border-bottom: 1px solid var(--line); transition: border-color .15s; }
.inline-link:hover { border-color: var(--accent); }
.hero-spec { margin-top: 28px; border-top: 1px solid var(--line); }
.hero-spec > div { display: flex; gap: 16px; padding: 9px 0; border-bottom: 1px solid var(--line); }
.hero-spec dt { flex: none; width: 56px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; font-size: 11px; padding-top: 1px; }
.hero-spec dd { color: var(--ink-soft); }
.hero-actions { display: flex; gap: 22px; margin-top: 30px; flex-wrap: wrap; }
.link-arrow {
  color: var(--ink); text-decoration: none; font-size: 13.5px;
  transition: color .15s;
}
.link-arrow span { color: var(--accent); display: inline-block; transition: transform .18s; }
.link-arrow:hover { color: var(--accent); }
.link-arrow:hover span { transform: translateX(3px); }

/* framed B/W photo */
.hero-media { margin: 0; position: relative; }
.frame { position: relative; padding: 10px; border: 1px solid var(--line); border-radius: 4px; background: repeating-linear-gradient(45deg, rgba(46,230,160,0.015) 0 8px, transparent 8px 16px); }
.frame img {
  width: 100%; object-fit: cover; aspect-ratio: 3/4; display: block;
  filter: grayscale(1) contrast(1.05) brightness(0.95);
  transition: filter .5s ease;
}
.frame:hover img { filter: grayscale(0) contrast(1.02); }
.tick { position: absolute; width: 9px; height: 9px; border-color: var(--accent); border-style: solid; border-width: 0; }
.tick.tl { top: 3px; left: 3px; border-top-width: 1px; border-left-width: 1px; }
.tick.tr { top: 3px; right: 3px; border-top-width: 1px; border-right-width: 1px; }
.tick.bl { bottom: 3px; left: 3px; border-bottom-width: 1px; border-left-width: 1px; }
.tick.br { bottom: 3px; right: 3px; border-bottom-width: 1px; border-right-width: 1px; }
.hero-media figcaption { margin-top: 10px; color: var(--muted); font-size: 11.5px; text-align: left; }

/* ===== section shared ===== */
.kicker {
  font-family: var(--mono); font-size: 13px; color: var(--accent);
  letter-spacing: 0.5px; margin-bottom: 14px;
}
.section h2 {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(28px, 4.2vw, 44px); line-height: 1.1;
  letter-spacing: -1px; margin-bottom: 18px; color: var(--ink);
}
.section-head { max-width: 620px; margin-bottom: clamp(32px, 5vw, 56px); }
.section-intro, .contact-lead { font-size: 18px; color: var(--ink-soft); }

/* ===== ABOUT ===== */
.about .section-body { max-width: 700px; }
.about h2 { max-width: 14ch; }
.about p { margin-bottom: 16px; color: var(--ink-soft); font-size: 18px; }
.about strong { color: var(--ink); font-weight: 600; }
.about-personal { color: var(--accent) !important; font-family: var(--serif); font-style: italic; font-size: 20px !important; }
.facts { list-style: none; margin-top: 24px; border-top: 1px solid var(--line); }
.facts li { display: flex; gap: 18px; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 15px; color: var(--ink); }
.facts span { flex: none; width: 68px; font-family: var(--mono); font-size: 12.5px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; padding-top: 2px; }

/* ===== CARDS ===== */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.card {
  background: var(--bg); border-radius: 0;
  padding: 26px 24px; transition: background .2s;
}
.card:hover { background: var(--bg-2); }
.card-icon {
  width: 30px; height: 30px; border-radius: 4px;
  background: transparent; color: var(--accent); border: 1px solid var(--accent);
  font-family: var(--mono); font-weight: 500; font-size: 14px;
  display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
}
.card h3 { font-family: var(--serif); font-weight: 600; font-size: 21px; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; color: var(--ink); }
.card h3 a { color: var(--muted); text-decoration: none; font-size: 15px; transition: color .15s; }
.card h3 a:hover { color: var(--accent); }
.card p { color: var(--ink-soft); font-size: 15px; margin-bottom: 16px; }
.metrics { list-style: none; display: flex; flex-direction: column; gap: 7px; }
.metrics li { font-family: var(--mono); font-size: 12.5px; color: var(--ink-soft); padding-left: 16px; position: relative; }
.metrics li::before { content: "→"; position: absolute; left: 0; color: var(--accent); }

/* ===== TIMELINE ===== */
.timeline { list-style: none; }
.timeline li { display: grid; grid-template-columns: 64px 1fr; gap: 24px; padding: 26px 0; border-top: 1px solid var(--line); }
.timeline li:last-child { border-bottom: 1px solid var(--line); }
.tl-mark {
  width: 52px; height: 52px; border-radius: 12px;
  background: var(--bg-2); color: var(--accent); border: 1px solid var(--line);
  font-family: var(--mono); font-weight: 500; font-size: 15px;
  display: flex; align-items: center; justify-content: center;
}
.tl-top { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; flex-wrap: wrap; }
.tl-body h3 { font-family: var(--serif); font-weight: 600; font-size: 20px; color: var(--ink); }
.tl-date { font-family: var(--mono); font-size: 13px; color: var(--muted); flex: none; }
.tl-org { color: var(--accent); font-size: 14.5px; margin: 2px 0 10px; }
.tl-body p:last-child { color: var(--ink-soft); font-size: 15px; }

/* ===== EDUCATION ===== */
.edu-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.edu-card { background: var(--bg); border-radius: 0; padding: 24px; transition: background .2s; }
.edu-card:hover { background: var(--bg-2); }
.edu-year { font-family: var(--mono); font-size: 12.5px; color: var(--muted); }
.edu-card h3 { font-family: var(--serif); font-weight: 600; font-size: 20px; margin: 10px 0 6px; color: var(--ink); }
.edu-card p { color: var(--ink-soft); font-size: 14.5px; }

/* ===== AWARDS ===== */
.award-list { list-style: none; }
.award-list li { display: grid; grid-template-columns: 70px 1fr auto; gap: 20px; align-items: baseline; padding: 20px 0; border-top: 1px solid var(--line); }
.award-list li:last-child { border-bottom: 1px solid var(--line); }
.aw-year { font-family: var(--mono); font-size: 14px; color: var(--muted); }
.aw-name { font-family: var(--serif); font-size: 20px; font-weight: 600; color: var(--ink); }
.aw-note { color: var(--ink-soft); font-size: 14.5px; text-align: right; }

/* ===== SKILLS ===== */
.skill-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.skill-col h3 { font-family: var(--serif); font-weight: 600; font-size: 19px; margin-bottom: 12px; padding-bottom: 12px; border-bottom: 1px solid var(--line); color: var(--ink); }
.skill-tags { font-size: 14.5px; color: var(--ink-soft); line-height: 1.9; }

/* ===== CONTACT ===== */
.contact { padding-bottom: clamp(64px, 10vw, 128px); }
.contact-lead { max-width: 52ch; margin-bottom: 28px; }
.contact-links { display: flex; flex-wrap: wrap; gap: 14px 28px; }
.contact-links a {
  font-family: var(--serif); font-size: clamp(20px, 3vw, 30px); font-weight: 500;
  text-decoration: none; border-bottom: 2px solid var(--line); padding-bottom: 2px;
  transition: border-color .2s, color .2s;
}
.contact-links a:hover { color: var(--accent); border-color: var(--accent); }

/* ===== FOOTER ===== */
.foot {
  max-width: var(--maxw); margin-right: auto;
  padding: 28px clamp(20px, 5vw, 56px); border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  font-family: var(--mono); font-size: 13px; color: var(--muted);
}

/* ===== reveal ===== */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }

/* ===== responsive ===== */
@media (max-width: 960px) {
  :root { --rail-w: 0px; }
  main, .foot { margin-left: 0; }
  .rail {
    position: sticky; top: 0; left: 0; width: 100%; height: auto;
    flex-direction: row; align-items: center; justify-content: space-between;
    gap: 14px; padding: 10px clamp(16px, 4vw, 28px);
    border-right: none; border-bottom: 1px solid var(--line);
    background: rgba(8, 11, 12, 0.72);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  }
  .rail-top { flex-direction: row; align-items: center; gap: 10px; }
  .rail-nav { flex-direction: row; gap: 16px; overflow-x: auto; }
  .rail-nav a { padding: 0; white-space: nowrap; }
  .rail-nav .rail-num { display: none; }
  .rail-meta, .rail-bottom .rail-loc, .rail-status { display: none; }
}
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding-top: 40px; }
  .hero-media { max-width: 380px; }
  .cards, .edu-grid, .skill-cols { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .rail-nav a:nth-child(n+5) { display: none; }
}
@media (max-width: 520px) {
  body { font-size: 16px; }
  .award-list li { grid-template-columns: 54px 1fr; }
  .aw-note { grid-column: 2; text-align: left; }
  .timeline li { grid-template-columns: 1fr; gap: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}