:root {
  --ink: #e8edf2;
  --muted: #9aa9b8;
  --faint: #647383;
  --background: #0b1117;
  --surface: #111a23;
  --surface-raised: #17222d;
  --line: #273543;
  --accent: #72e3b8;
  --accent-strong: #a4f0d3;
  --accent-dark: #0b2c23;
  --warm: #f1bb6b;
  --max-width: 1180px;
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration-color: color-mix(in srgb, currentColor 45%, transparent);
  text-underline-offset: 0.22em;
}

a:hover {
  text-decoration-color: currentColor;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--warm);
  outline-offset: 4px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--ink);
  color: var(--background);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: min(calc(100% - 40px), var(--max-width));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 80%, transparent);
  background: color-mix(in srgb, var(--background) 90%, transparent);
  backdrop-filter: blur(16px);
}

.header-inner {
  min-height: 72px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  width: fit-content;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 35px;
  height: 35px;
  border: 1px solid var(--accent);
  border-radius: 10px;
  color: var(--accent);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 13px;
  letter-spacing: 0.04em;
}

nav {
  display: flex;
  gap: 26px;
}

nav a,
.header-resume {
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

nav a:hover,
.header-resume:hover {
  color: var(--ink);
}

.header-resume {
  justify-self: end;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 112px 0 96px;
  border-bottom: 1px solid var(--line);
}

.hero::before {
  content: "";
  position: absolute;
  width: 560px;
  height: 560px;
  top: -320px;
  right: -80px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  filter: blur(40px);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  align-items: center;
  gap: clamp(48px, 8vw, 100px);
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--accent);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2 {
  letter-spacing: -0.035em;
  line-height: 1.08;
}

h1 {
  max-width: 780px;
  margin-bottom: 28px;
  font-size: clamp(48px, 7vw, 84px);
  font-weight: 750;
}

h2 {
  margin-bottom: 22px;
  font-size: clamp(34px, 4.6vw, 56px);
  font-weight: 720;
}

h3 {
  margin-bottom: 12px;
  font-size: 21px;
  line-height: 1.25;
}

.hero-copy {
  max-width: 690px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 21px);
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: 11px;
  font-size: 14px;
  font-weight: 750;
  text-decoration: none;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--accent);
  color: #082219;
}

.button-primary:hover {
  background: var(--accent-strong);
}

.button-secondary {
  border-color: var(--line);
  background: var(--surface);
  color: var(--ink);
}

.button-secondary:hover {
  border-color: var(--accent);
}

.social-links,
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.social-links a {
  color: var(--muted);
  font-size: 14px;
}

.signal-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, var(--surface-raised), var(--surface));
  box-shadow: 0 28px 80px rgb(0 0 0 / 0.24);
  overflow: hidden;
}

.panel-label {
  margin: 0;
  padding: 17px 20px;
  border-bottom: 1px solid var(--line);
  color: var(--faint);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.signal-panel dl {
  margin: 0;
}

.signal-panel dl div {
  display: grid;
  grid-template-columns: 105px 1fr;
  gap: 18px;
  align-items: center;
  padding: 22px 20px;
  border-bottom: 1px solid var(--line);
}

.signal-panel dl div:last-child {
  border-bottom: 0;
}

.signal-panel dt {
  color: var(--accent);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 24px;
  font-weight: 800;
}

.signal-panel dd {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.section {
  padding: 100px 0;
  border-bottom: 1px solid var(--line);
}

.section-contrast {
  background: #0e161e;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.6fr);
  gap: 60px;
  align-items: end;
  margin-bottom: 50px;
}

.section-heading h2 {
  max-width: 780px;
  margin-bottom: 0;
}

.section-heading > p {
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 17px;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.project-card {
  display: flex;
  flex-direction: column;
  min-height: 470px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.project-featured {
  background: linear-gradient(145deg, var(--surface-raised), var(--surface));
}

.project-topline {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 34px;
  color: var(--faint);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.project-number {
  color: var(--accent);
}

.project-card > p {
  color: var(--muted);
}

.detail-list {
  display: grid;
  gap: 9px;
  margin: 10px 0 24px;
  padding: 0;
  color: var(--muted);
  font-size: 14px;
  list-style: none;
}

.detail-list li {
  position: relative;
  padding-left: 18px;
}

.detail-list li::before {
  content: "";
  position: absolute;
  top: 0.65em;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.tag-list {
  gap: 8px;
  margin-top: auto;
}

.tag-list li {
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--faint);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
}

.project-link {
  width: fit-content;
  margin-top: 22px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
}

.case-study-callout {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 34px;
  align-items: center;
  margin-top: 18px;
  padding: 32px;
  border: 1px solid color-mix(in srgb, var(--warm) 35%, var(--line));
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--warm) 5%, var(--surface));
}

.case-study-callout h3 {
  font-size: 26px;
}

.case-study-callout p:last-child {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--muted);
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.principle-grid article {
  padding: 30px;
  border-top: 2px solid var(--accent);
  background: var(--surface);
}

.principle-grid article > span {
  display: inline-block;
  margin-bottom: 54px;
  color: var(--faint);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
}

.principle-grid p {
  margin-bottom: 0;
  color: var(--muted);
}

.experience-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.7fr) minmax(0, 1.3fr);
  gap: clamp(50px, 9vw, 120px);
}

.experience-intro {
  color: var(--muted);
  font-size: 18px;
}

.timeline {
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  padding: 0 0 34px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 34px;
}

.timeline li:last-child {
  margin-bottom: 0;
}

.timeline-date {
  color: var(--accent);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
  font-weight: 700;
}

.timeline h3 {
  margin-bottom: 4px;
}

.company {
  margin-bottom: 12px;
  color: var(--faint);
  font-size: 14px;
}

.timeline li div:last-child > p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

.skills-section h2 {
  max-width: 720px;
}

.skill-groups {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin-top: 46px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.skill-groups > div {
  padding: 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.skill-groups h3 {
  color: var(--accent);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.skill-groups p {
  margin-bottom: 0;
  color: var(--muted);
}

.contact-section {
  padding: 105px 0;
  background: var(--accent-dark);
}

.contact-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 60px;
}

.contact-inner h2 {
  max-width: 800px;
}

.contact-inner p:not(.eyebrow) {
  max-width: 740px;
  margin-bottom: 0;
  color: #b7c9c2;
  font-size: 18px;
}

.contact-actions {
  flex-direction: column;
}

footer {
  padding: 28px 0;
  color: var(--faint);
  font-size: 13px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
}

.footer-inner p {
  margin: 0;
}

@media (max-width: 900px) {
  .header-inner {
    grid-template-columns: 1fr auto;
  }

  nav {
    display: none;
  }

  .hero-grid,
  .section-heading,
  .experience-layout,
  .contact-inner {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 84px;
  }

  .signal-panel {
    max-width: 600px;
  }

  .section-heading {
    gap: 20px;
  }

  .principle-grid {
    grid-template-columns: 1fr;
  }

  .principle-grid article > span {
    margin-bottom: 24px;
  }

  .case-study-callout {
    grid-template-columns: 1fr;
  }

  .contact-actions {
    flex-direction: row;
  }
}

@media (max-width: 680px) {
  .shell {
    width: min(calc(100% - 28px), var(--max-width));
  }

  .site-header {
    position: static;
  }

  .header-inner {
    min-height: 64px;
  }

  .brand > span:last-child {
    display: none;
  }

  .hero {
    padding: 68px 0 70px;
  }

  h1 {
    font-size: clamp(43px, 14vw, 64px);
  }

  .hero-actions,
  .contact-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .signal-panel dl div {
    grid-template-columns: 88px 1fr;
  }

  .section {
    padding: 76px 0;
  }

  .project-grid,
  .skill-groups {
    grid-template-columns: 1fr;
  }

  .project-card {
    min-height: auto;
    padding: 24px;
  }

  .case-study-callout {
    padding: 24px;
  }

  .timeline li {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .contact-section {
    padding: 76px 0;
  }

  .footer-inner {
    flex-direction: column;
    gap: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .button {
    transition: none;
  }
}