:root {
  --paper: #ffffff;
  --paper-alt: #e2e4ea;
  --panel: #f7f8fa;
  --ink: #14181f;
  --ink-soft: #4a5160;
  --ink-faint: #7c8393;
  --amber: #e8a33d;
  --amber-dim: #f4d9a8;
  --teal: #1f6f78;
  --teal-dim: #dceaea;
  --line: rgba(20, 24, 31, 0.14);
  --line-soft: rgba(20, 24, 31, 0.08);
  --radius: 2px;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  background: var(--paper);
  color: var(--ink);
  font-family: "IBM Plex Sans", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

a {
  color: inherit;
}
::selection {
  background: var(--amber);
  color: var(--ink);
}

.wrap {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 32px;
}
@media (max-width: 640px) {
  .wrap {
    padding: 0 20px;
  }
}

.mono {
  font-family: "IBM Plex Mono", monospace;
}

.eyebrow {
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--teal);
  display: inline-block;
}

h1,
h2,
h3 {
  font-family: "Fraunces", serif;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
}

/* ---------- NAV ---------- */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(237, 238, 242, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
nav.wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  font-family: "IBM Plex Mono", monospace;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.02em;
}
.brand span {
  color: var(--teal);
}
.navlinks {
  display: flex;
  gap: 28px;
  font-size: 14px;
  font-family: "IBM Plex Mono", monospace;
}
.navlinks a {
  text-decoration: none;
  color: var(--ink-soft);
  position: relative;
  padding: 4px 0;
  transition: color 0.2s;
}
.navlinks a:hover {
  color: var(--ink);
}
.navlinks a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--amber);
  transition: width 0.25s;
}
.navlinks a:hover::after {
  width: 100%;
}
@media (max-width: 640px) {
  .navlinks {
    display: none;
  }
}

/* ---------- HERO ---------- */
.hero {
  padding: 96px 0 80px;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}
.query-block {
  background: var(--ink);
  color: #dce4e4;
  border-radius: var(--radius);
  padding: 22px 26px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 14px;
  line-height: 1.9;
  max-width: 640px;
  box-shadow: 0 18px 40px -20px rgba(20, 24, 31, 0.5);
}
.query-block .kw {
  color: var(--amber);
}
.query-block .str {
  color: #8fd3c7;
}
.query-block .cmt {
  color: #7c8393;
}
.caret {
  display: inline-block;
  width: 8px;
  height: 16px;
  background: var(--amber);
  vertical-align: -3px;
  animation: blink 1s steps(1) infinite;
}
@keyframes blink {
  50% {
    opacity: 0;
  }
}

.result-row {
  margin-top: 22px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0;
  max-width: 640px;
  border: 1px solid var(--line);
  background: var(--panel);
  opacity: 0;
  animation: reveal 0.5s ease forwards;
  animation-delay: 1.4s;
}
@keyframes reveal {
  to {
    opacity: 1;
  }
}
.result-row div {
  padding: 14px 18px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
  border-right: 1px solid var(--line);
}
.result-row div:last-child {
  border-right: none;
}
.result-row .rlabel {
  color: var(--ink-faint);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 4px;
  display: block;
}
.result-row .rval {
  color: var(--ink);
  font-weight: 500;
}
@media (max-width: 640px) {
  .result-row {
    grid-template-columns: 1fr;
  }
  .result-row div {
    border-right: none;
    border-bottom: 1px solid var(--line);
  }
  .result-row div:last-child {
    border-bottom: none;
  }
}

.hero h1 {
  font-size: clamp(40px, 6vw, 64px);
  margin: 28px 0 6px;
  line-height: 1.02;
}
.hero .role {
  font-size: 19px;
  color: var(--ink-soft);
  font-weight: 400;
  margin-bottom: 30px;
}
.hero .role strong {
  color: var(--teal);
  font-weight: 600;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 40px;
  align-items: start;
}
.hero-photo {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 14px;
  align-self: start;
}
.hero-photo img {
  display: block;
  width: 100%;
  height: auto;
  filter: grayscale(15%);
}
@media (max-width: 760px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-photo {
    max-width: 220px;
    margin: 0 auto;
  }
}

.kpi-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  margin-top: 56px;
}
.kpi {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 20px 18px;
}
.kpi .num {
  font-family: "Fraunces", serif;
  font-size: 30px;
  font-weight: 600;
  color: var(--ink);
}
.kpi .lbl {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 4px;
}
@media (max-width: 640px) {
  .kpi-strip {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- SECTIONS ---------- */
section {
  padding: 88px 0;
  border-bottom: 1px solid var(--line);
}
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 44px;
  gap: 20px;
  flex-wrap: wrap;
}
.section-head h2 {
  font-size: clamp(28px, 4vw, 38px);
}

.fade-up {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}
.fade-up.in {
  opacity: 1;
  transform: none;
}

/* about */
.about-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 56px;
}
@media (max-width: 760px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
}
.about-grid p {
  color: var(--ink-soft);
  font-size: 16px;
  margin-bottom: 16px;
  max-width: 56ch;
}
.fact-list {
  border-top: 1px solid var(--line);
}
.about-photo {
  display: block;
  width: 100%;
  max-width: 220px;
  height: auto;
  margin-bottom: 24px;
  border: 1px solid var(--line);
}
.fact-list div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.fact-list .k {
  font-family: "IBM Plex Mono", monospace;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 11px;
  padding-top: 3px;
}
.fact-list .v {
  text-align: right;
  color: var(--ink);
  font-weight: 500;
}

/* skills */
.skill-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
}
@media (max-width: 760px) {
  .skill-cols {
    grid-template-columns: 1fr;
  }
}
.skill-col h3 {
  font-size: 16px;
  font-family: "IBM Plex Mono", monospace;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 18px;
  color: var(--teal);
}
.chip {
  display: inline-block;
  padding: 7px 13px;
  margin: 0 8px 8px 0;
  background: var(--panel);
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-soft);
  border-radius: 100px;
}

/* projects */
.project {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 24px;
  padding: 36px 0;
  border-top: 1px solid var(--line);
}
.project:last-child {
  border-bottom: none;
}
.project .pnum {
  font-family: "Fraunces", serif;
  font-size: 34px;
  color: var(--paper-alt);
  font-weight: 700;
  -webkit-text-stroke: 1px var(--line);
}
.project h3 {
  font-size: 23px;
  margin-bottom: 2px;
}
.project .ptool {
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  color: var(--teal);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
  display: block;
}
.pcols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 18px;
}
@media (max-width: 700px) {
  .pcols {
    grid-template-columns: 1fr;
  }
}
.pcols h4 {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  margin-bottom: 8px;
}
.pcols p,
.pcols li {
  font-size: 14.5px;
  color: var(--ink-soft);
}
.pcols ul {
  padding-left: 18px;
}
.pcols li {
  margin-bottom: 6px;
}
.problem-box {
  background: var(--panel);
  border-left: 2px solid var(--amber);
  padding: 14px 18px;
  font-size: 14.5px;
  color: var(--ink-soft);
  margin-bottom: 20px;
}

.project-link {
  display: inline-block;
  margin-top: 20px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid var(--teal);
  padding-bottom: 2px;
  transition: opacity 0.2s;
}
.project-link:hover {
  opacity: 0.7;
}

/* experience timeline */
.tl {
  position: relative;
  padding-left: 28px;
}
.subheading {
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 44px 0 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}
.subheading:first-of-type {
  margin-top: 0;
}
.tl::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: var(--line);
}
.tl-item {
  position: relative;
  padding-bottom: 40px;
}
.tl-item:last-child {
  padding-bottom: 0;
}
.tl-item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 4px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--teal);
}
.tl-item .when {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11.5px;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}
.tl-item h3 {
  font-size: 18px;
  margin-bottom: 2px;
}
.tl-item .org {
  color: var(--ink-soft);
  font-size: 14px;
  margin-bottom: 10px;
  font-weight: 500;
}
.tl-item ul {
  padding-left: 18px;
  color: var(--ink-soft);
  font-size: 14.5px;
}
.tl-item li {
  margin-bottom: 4px;
}
.tl-photo {
  display: block;
  width: 100%;
  max-width: 480px;
  height: auto;
  margin-top: 16px;
  border: 1px solid var(--line);
}

/* contact */
.contact-panel {
  background: var(--ink);
  color: var(--paper);
  padding: 64px 48px;
  border-radius: var(--radius);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 32px;
}
.contact-panel h2 {
  color: #fff;
  font-size: clamp(28px, 4vw, 42px);
  max-width: 560px;
}
.contact-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 14px;
}
.contact-links a {
  text-decoration: none;
  color: var(--amber-dim);
  border-bottom: 1px solid rgba(232, 163, 61, 0.3);
  padding-bottom: 2px;
  width: fit-content;
  transition:
    border-color 0.2s,
    color 0.2s;
}

.contact-links a:hover {
  color: var(--amber);
  border-color: var(--amber);
}

.cv-button {
  display: inline-block;
  margin-top: 4px;
  padding: 10px 20px;
  background: var(--amber);
  color: var(--ink) !important;
  border: none !important;
  border-radius: 4px;
  font-weight: 600;
  text-align: center;
  transition: opacity 0.2s;
}
.cv-button:hover {
  opacity: 0.85;
}

@media (max-width: 640px) {
  .contact-panel {
    padding: 40px 26px;
  }
}

footer {
  padding: 28px 0 40px;
}
footer .wrap {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--ink-faint);
  font-family: "IBM Plex Mono", monospace;
  flex-wrap: wrap;
  gap: 8px;
}