/* Portfolio redesign: engineering field-notebook visual system */
:root {
  --ink: #10262d;
  --ink-soft: #334b52;
  --muted: #617379;
  --paper: #f2f1eb;
  --surface: #fbfaf6;
  --navy: #081f27;
  --navy-soft: #0d3039;
  --cyan: #62d6d1;
  --cyan-dark: #007b83;
  --signal: #ee6b3a;
  --signal-ink: #963619;
  --line: #cbd3d1;
  --line-dark: #31505a;
  --shadow: 0 28px 65px rgba(8, 31, 39, 0.15);
  --radius-small: 0.2rem;
  --radius-medium: 0.35rem;
  --max-width: 78rem;
  --header-height: 5rem;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --font-sans: "Space Grotesk", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", Consolas, monospace;
}

@supports (color: oklch(50% 0.1 200)) {
  :root {
    --ink: oklch(25% 0.026 210);
    --ink-soft: oklch(39% 0.025 210);
    --muted: oklch(51% 0.018 205);
    --paper: oklch(95.8% 0.009 95);
    --surface: oklch(98.7% 0.006 95);
    --navy: oklch(22% 0.035 210);
    --navy-soft: oklch(30% 0.045 205);
    --cyan: oklch(80% 0.105 190);
    --cyan-dark: oklch(48% 0.09 195);
    --signal: oklch(66% 0.17 44);
    --signal-ink: oklch(45% 0.15 44);
    --line: oklch(84% 0.012 190);
    --line-dark: oklch(42% 0.04 200);
  }
}

html {
  background: var(--navy);
}

body {
  position: relative;
  overflow-x: clip;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  letter-spacing: -0.012em;
}

::selection {
  background: var(--cyan);
  color: var(--navy);
}

.section-shell {
  width: min(calc(100% - 3rem), var(--max-width));
}

.section-code {
  margin: 0;
  color: var(--cyan-dark);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.11em;
  line-height: 1.3;
  text-transform: uppercase;
}

/* Header */
.site-header {
  min-height: var(--header-height);
  padding: 0.65rem max(1.5rem, calc((100vw - var(--max-width)) / 2));
  background: rgba(8, 31, 39, 0.95);
  border-bottom: 1px solid rgba(98, 214, 209, 0.24);
  color: #f7faf8;
  backdrop-filter: blur(18px);
  transition: min-height 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
  min-height: 4.35rem;
  box-shadow: 0 0.8rem 2.6rem rgba(8, 31, 39, 0.18);
}

.brand {
  gap: 0.8rem;
  color: #f7faf8;
}

.brand-mark {
  width: 2.55rem;
  background: var(--cyan);
  color: var(--navy);
  border: 1px solid var(--cyan);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
}

.brand-copy {
  display: grid;
  gap: 0.05rem;
}

.brand-name {
  color: #f7faf8;
  font-size: 0.98rem;
  line-height: 1.2;
}

.brand-copy small {
  color: rgba(255, 255, 255, 0.55);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1.2;
  text-transform: uppercase;
}

.primary-navigation {
  gap: clamp(0.8rem, 2vw, 1.55rem);
}

.primary-navigation a {
  color: rgba(255, 255, 255, 0.66);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.035em;
}

.primary-navigation a:hover,
.primary-navigation a[aria-current="true"] {
  color: var(--cyan);
}

.primary-navigation a:not(.nav-contact)::after {
  bottom: -0.55rem;
  background: var(--cyan);
}

.primary-navigation .nav-contact {
  min-height: 2.65rem;
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 0.8rem;
  background: var(--cyan);
  color: var(--navy);
  border: 1px solid var(--cyan);
}

.primary-navigation .nav-contact:hover,
.primary-navigation .nav-contact[aria-current="true"] {
  background: transparent;
  color: var(--cyan);
}

.menu-toggle {
  color: #f7faf8;
  border-color: rgba(255, 255, 255, 0.28);
}

/* Hero */
.hero {
  position: relative;
  isolation: isolate;
  min-height: calc(100svh - var(--header-height));
  grid-template-columns: minmax(0, 1.18fr) minmax(21rem, 0.72fr);
  gap: clamp(3rem, 7vw, 7rem);
  width: min(calc(100% - 3rem), var(--max-width));
  padding-block: clamp(3.5rem, 5vw, 4.5rem) clamp(3.5rem, 5vw, 4.5rem);
}

.hero::after {
  position: absolute;
  z-index: -2;
  inset: 0;
  background-image:
    linear-gradient(rgba(16, 38, 45, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 38, 45, 0.028) 1px, transparent 1px);
  background-size: 2rem 2rem;
  content: "";
}

.hero::before {
  position: absolute;
  z-index: -1;
  top: 10%;
  right: 31%;
  width: 12rem;
  height: 12rem;
  border: 1px solid rgba(0, 123, 131, 0.16);
  border-radius: 50%;
  box-shadow:
    0 0 0 3rem rgba(0, 123, 131, 0.035),
    0 0 0 6rem rgba(0, 123, 131, 0.022);
  content: "";
}

.hero-copy {
  min-width: 0;
  animation: hero-copy-in 680ms var(--ease-out) both;
}

.hero .section-code {
  margin-bottom: 1.1rem;
}

.hero-status {
  margin-bottom: 1.6rem;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.025em;
  text-transform: uppercase;
}

.hero-status span {
  width: 0.55rem;
  height: 0.55rem;
  background: var(--signal);
  box-shadow: 0 0 0 0.32rem rgba(238, 107, 58, 0.15);
}

.hero h1 {
  max-width: 11.8ch;
  font-size: clamp(3.55rem, 6.2vw, 6.35rem);
  font-weight: 600;
  letter-spacing: -0.07em;
  line-height: 0.86;
}

.hero h1 strong {
  margin-top: 0.25em;
  color: var(--cyan-dark);
  font-weight: 600;
}

.hero-summary {
  max-width: 60ch;
  margin-top: 2rem;
  color: var(--ink-soft);
  font-size: clamp(1.02rem, 1.35vw, 1.17rem);
  line-height: 1.7;
}

.hero-actions {
  margin-top: 2rem;
}

.button {
  min-height: 3.1rem;
  padding: 0.72rem 1rem;
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.025em;
}

.button-primary {
  background: var(--navy);
  color: var(--cyan);
}

.button-primary:hover {
  background: var(--cyan-dark);
  color: #fff;
}

.button-secondary {
  background: rgba(251, 250, 246, 0.5);
  border-color: var(--line-dark);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: clamp(2rem, 3vw, 2.75rem) 0 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.hero-metrics > div {
  min-width: 0;
  padding: 1.05rem 0.85rem 1.1rem 0;
}

.hero-metrics > div:not(:first-child) {
  padding-left: 0.85rem;
  border-left: 1px solid var(--line);
}

.hero-metrics dt {
  color: var(--navy);
  font-family: var(--font-mono);
  font-size: clamp(1.45rem, 2.7vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.06em;
  line-height: 1;
}

.hero-metrics dd {
  margin: 0.5rem 0 0;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.35;
}

.hero-visual {
  position: relative;
  width: min(100%, 30rem);
  min-height: 0;
  aspect-ratio: auto;
  justify-self: end;
  padding: 0;
  overflow: visible;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.portrait-frame {
  position: relative;
  aspect-ratio: 4 / 5.25;
  padding: 0.65rem;
  background: var(--surface);
  border: 1px solid var(--line-dark);
  box-shadow: var(--shadow);
}

.portrait-frame::before,
.portrait-frame::after {
  position: absolute;
  z-index: 2;
  width: 2.7rem;
  height: 2.7rem;
  border-color: var(--signal);
  content: "";
  pointer-events: none;
}

.portrait-frame::before {
  top: -0.55rem;
  left: -0.55rem;
  border-top: 3px solid var(--signal);
  border-left: 3px solid var(--signal);
}

.portrait-frame::after {
  right: -0.55rem;
  bottom: -0.55rem;
  border-right: 3px solid var(--signal);
  border-bottom: 3px solid var(--signal);
}

.profile-photo {
  border-radius: 0;
  filter: saturate(0.88) contrast(1.03);
}

.hero-visual figcaption {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 1rem;
  padding: 1rem 0 0;
  font-family: var(--font-mono);
}

.hero-visual figcaption strong {
  color: var(--ink);
  font-size: 0.74rem;
  text-transform: uppercase;
}

.hero-visual figcaption span {
  color: var(--muted);
  font-size: 0.64rem;
  line-height: 1.4;
  text-align: right;
}

/* Field systems rail */
.systems-scope {
  position: relative;
  overflow: hidden;
  background: var(--navy);
  border-top: 1px solid rgba(98, 214, 209, 0.2);
  border-bottom: 1px solid rgba(98, 214, 209, 0.2);
}

.systems-scope::after {
  position: absolute;
  right: -4rem;
  bottom: -4rem;
  width: 13rem;
  height: 13rem;
  border: 1px solid rgba(98, 214, 209, 0.12);
  border-radius: 50%;
  content: "";
}

.systems-layout {
  grid-template-columns: minmax(14rem, 0.68fr) minmax(0, 1.32fr);
  gap: clamp(2rem, 6vw, 6rem);
  padding-block: 2.25rem;
}

.systems-layout .section-code {
  margin-bottom: 0.5rem;
  color: var(--cyan);
}

.systems-layout h2 {
  max-width: 22ch;
  color: #f7faf8;
  font-size: clamp(1.25rem, 2.1vw, 1.75rem);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.12;
}

.systems-layout ul {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line-dark);
  border-left: 1px solid var(--line-dark);
}

.systems-layout li {
  min-height: 3.15rem;
  display: grid;
  place-items: center;
  padding: 0.55rem;
  color: rgba(255, 255, 255, 0.78);
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.025em;
  text-align: center;
}

.systems-layout li:not(:last-child)::after {
  display: none;
}

/* Shared section hierarchy */
.section-block {
  padding-block: clamp(5.5rem, 9vw, 8.5rem);
}

.section-heading {
  grid-template-columns: minmax(0, 0.95fr) minmax(20rem, 0.55fr);
  align-items: end;
  gap: 1.1rem 4rem;
  margin-bottom: clamp(3.2rem, 6vw, 5rem);
}

.section-heading > .section-code {
  grid-column: 1 / -1;
}

.section-heading h2 {
  max-width: 15ch;
  font-size: clamp(2.75rem, 5vw, 5.15rem);
  font-weight: 600;
  letter-spacing: -0.065em;
  line-height: 0.92;
}

.section-heading > p:not(.section-code) {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.7;
}

/* Experience */
.experience-section {
  background: rgba(251, 250, 246, 0.76);
}

.featured-experience {
  grid-template-columns: minmax(14rem, 0.55fr) minmax(0, 1.45fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  padding-block: 0;
  border-top: 2px solid var(--navy);
  border-bottom: 1px solid var(--line);
}

.experience-identity {
  position: sticky;
  top: calc(var(--header-height) + 2rem);
  padding: 2rem 0 2.5rem;
}

.experience-date {
  margin-bottom: 0.75rem;
  color: var(--signal-ink);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.experience-identity h3,
.earlier-experience h3,
.education-list h3 {
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.035em;
}

.experience-identity > p:not(.experience-date, .experience-location) {
  margin-bottom: 0.45rem;
  color: var(--ink-soft);
}

.experience-location {
  margin: 0 0 1.15rem;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.67rem;
  line-height: 1.45;
}

.text-link,
.projects-link,
.project-link {
  color: var(--cyan-dark);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.workstreams {
  counter-reset: workstream;
  display: block;
  border-left: 1px solid var(--line);
}

.workstream {
  counter-increment: workstream;
  position: relative;
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr);
  gap: 1.5rem;
  padding: 2rem 0 2rem 2rem;
  border-bottom: 1px solid var(--line);
}

.workstream::before {
  position: absolute;
  top: 2.15rem;
  left: -0.32rem;
  width: 0.55rem;
  height: 0.55rem;
  background: var(--surface);
  border: 2px solid var(--cyan-dark);
  border-radius: 50%;
  content: "";
}

.workstream:nth-child(n + 3) {
  padding-top: 2rem;
  border-top: 0;
}

.workstream h4 {
  margin: 0;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.3;
}

.workstream h4::before {
  display: block;
  margin-bottom: 0.45rem;
  color: var(--signal);
  content: "0" counter(workstream);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
}

.workstream > p:not(.workstream-tools) {
  grid-column: 2;
  color: var(--ink-soft);
  line-height: 1.68;
}

.workstream-tools {
  grid-column: 2;
  margin-top: 0.9rem !important;
  color: var(--cyan-dark) !important;
  font-family: var(--font-mono);
  font-size: 0.67rem;
  font-weight: 500;
  line-height: 1.5;
}

.earlier-experience {
  position: relative;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 4.5rem;
  padding-top: 2.35rem;
  border-top: 1px solid var(--navy);
  border-bottom: 1px solid var(--line);
}

.earlier-label {
  position: absolute;
  top: -0.85rem;
  left: 0;
  margin: 0;
  padding-right: 0.8rem;
  background: var(--paper);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.earlier-experience article {
  padding: 0 2rem 2.5rem 0;
  border-top: 0;
}

.earlier-experience article:not(:first-of-type) {
  padding-left: 2rem;
  border-left: 1px solid var(--line);
}

.earlier-experience p:last-child {
  margin-top: 0.85rem;
  line-height: 1.6;
}

/* Projects */
.projects-section {
  position: relative;
  overflow: hidden;
  background-color: var(--navy);
}

.projects-section .section-shell {
  position: relative;
  z-index: 1;
}

.projects-section::before {
  position: absolute;
  top: 7rem;
  right: -10rem;
  width: 32rem;
  height: 32rem;
  border: 1px solid rgba(98, 214, 209, 0.09);
  border-radius: 50%;
  box-shadow: 0 0 0 6rem rgba(98, 214, 209, 0.018);
  content: "";
}

.projects-section::after {
  position: absolute;
  z-index: 0;
  inset: 0;
  background-image:
    linear-gradient(rgba(98, 214, 209, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(98, 214, 209, 0.04) 1px, transparent 1px);
  background-size: 2rem 2rem;
  content: "";
  pointer-events: none;
}

.projects-section .section-code {
  color: var(--cyan);
}

.projects-section .section-heading h2 {
  color: #f7faf8;
}

.projects-section .section-heading > p:not(.section-code) {
  color: rgba(255, 255, 255, 0.62);
}

.project-list {
  counter-reset: project;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  border: 0;
}

.project-row {
  counter-increment: project;
  position: relative;
  min-width: 0;
  grid-template-columns: 1fr;
  align-content: space-between;
  gap: 2rem;
  padding: 2rem;
  background: rgba(13, 48, 57, 0.62);
  border: 1px solid var(--line-dark);
}

.project-row::before {
  position: absolute;
  top: 0.85rem;
  right: 1rem;
  color: rgba(98, 214, 209, 0.5);
  content: "P-" counter(project, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
}

.project-row:nth-child(even) .project-copy,
.project-row:nth-child(even) > :last-child {
  order: initial;
}

.featured-project {
  grid-column: 1 / -1;
  grid-template-columns: minmax(0, 1.1fr) minmax(18rem, 0.9fr);
  align-items: center;
  gap: clamp(2rem, 7vw, 7rem);
  padding: clamp(2rem, 4vw, 3.2rem);
  border-color: rgba(98, 214, 209, 0.62);
}

.project-row:nth-child(n + 5) {
  align-content: start;
  gap: 0;
  padding: 1.6rem;
}

.project-row:nth-child(n + 5) > :last-child:not(.project-copy) {
  display: none;
}

.repository-only {
  border-left: 3px solid rgba(98, 214, 209, 0.42);
}

.project-row:nth-child(n + 5) .project-copy h3 {
  font-size: clamp(1.55rem, 2.8vw, 2.25rem);
}

.project-row:nth-child(n + 5) .project-copy > p:not(.project-context, .project-note) {
  font-size: 0.86rem;
}

.project-context {
  margin-bottom: 0.8rem;
  padding-right: 3rem;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.project-copy h3 {
  max-width: 18ch;
  color: #f7faf8;
  font-size: clamp(1.75rem, 3.5vw, 3.1rem);
  font-weight: 600;
  letter-spacing: -0.06em;
  line-height: 0.98;
}

.project-copy > p:not(.project-context, .project-note) {
  margin-top: 1.15rem;
  color: rgba(255, 255, 255, 0.66);
  font-size: 0.92rem;
  line-height: 1.68;
}

.project-stack {
  margin-top: 1.25rem;
}

.project-stack li {
  padding: 0.28rem 0.5rem;
  color: var(--cyan);
  border-color: var(--line-dark);
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 500;
}

.project-link {
  margin-top: 1.35rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--cyan);
  text-decoration: none;
}

.project-link:hover {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 0.28rem;
}

.project-note {
  margin: 1.35rem 0 0;
  color: rgba(255, 255, 255, 0.45);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.03em;
}

.project-diagram,
.project-chart,
.project-terminal,
.provider-orbit,
.robot-route,
.cartpole-scene,
.forecast-scene,
.fleet-scene,
.docking-scene {
  min-height: 12rem;
  border: 1px solid rgba(98, 214, 209, 0.16);
}

/* AMHS diagram */
.fleet-scene {
  position: relative;
  min-height: 18rem;
  overflow: hidden;
  background:
    linear-gradient(90deg, transparent 49.7%, rgba(98, 214, 209, 0.08) 50%, transparent 50.3%),
    linear-gradient(transparent 49.7%, rgba(98, 214, 209, 0.08) 50%, transparent 50.3%);
}

/* PLC vision cell diagram */
.cell-scene {
  position: relative;
  min-height: 18rem;
  display: grid;
  align-content: center;
  gap: 2.5rem;
  padding: 2rem;
  overflow: hidden;
  border: 1px solid rgba(98, 214, 209, 0.16);
  background:
    linear-gradient(90deg, transparent 49.7%, rgba(98, 214, 209, 0.08) 50%, transparent 50.3%),
    linear-gradient(transparent 49.7%, rgba(98, 214, 209, 0.08) 50%, transparent 50.3%);
}

.cell-stations {
  display: grid;
  grid-template-columns: 1fr 2rem 1fr 2rem 1fr;
  align-items: center;
}

.cell-stations span {
  min-height: 4.5rem;
  display: grid;
  place-items: center;
  padding: 0.55rem;
  color: #f7faf8;
  border: 1px solid var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.67rem;
  text-align: center;
}

.cell-stations small {
  color: var(--signal);
  font-size: 0.56rem;
}

.cell-stations i {
  position: relative;
  height: 1px;
  background: var(--cyan);
}

.cell-stations i::after {
  position: absolute;
  top: -0.23rem;
  right: 0;
  width: 0.4rem;
  height: 0.4rem;
  border-top: 1px solid var(--cyan);
  border-right: 1px solid var(--cyan);
  content: "";
  transform: rotate(45deg);
}

.cell-readout {
  display: grid;
  gap: 0.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line-dark);
  color: #fff;
  font-family: var(--font-mono);
}

.cell-readout span,
.cell-readout small {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.57rem;
  text-transform: uppercase;
}

.cell-readout strong {
  color: var(--cyan);
  font-size: 1rem;
}

.fleet-track {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 13.5rem;
  height: 8.2rem;
  border: 2px solid var(--line-dark);
  border-radius: 4.1rem;
  transform: translate(-50%, -50%);
}

.fleet-track::before {
  position: absolute;
  inset: 0.85rem;
  border: 1px dashed rgba(98, 214, 209, 0.35);
  border-radius: inherit;
  content: "";
}

.fleet-track span {
  position: absolute;
  width: 1.2rem;
  height: 0.75rem;
  background: var(--cyan);
  border: 2px solid var(--navy);
}

.fleet-track span:nth-child(1) { top: -0.45rem; left: 2.6rem; }
.fleet-track span:nth-child(2) { top: -0.45rem; right: 2.6rem; }
.fleet-track span:nth-child(3) { top: 50%; right: -0.65rem; }
.fleet-track span:nth-child(4) { right: 3.4rem; bottom: -0.45rem; }
.fleet-track span:nth-child(5) { top: 50%; left: -0.65rem; }

.fleet-readout {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  gap: 0.25rem;
  color: #fff;
  font-family: var(--font-mono);
  text-align: center;
  transform: translate(-50%, -50%);
}

.fleet-readout span,
.fleet-readout small {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.57rem;
  text-transform: uppercase;
}

.fleet-readout strong {
  color: var(--cyan);
  font-size: 1.1rem;
}

/* AMR docking diagram */
.docking-scene {
  position: relative;
  min-height: 15rem;
  overflow: hidden;
}

.dock-marker {
  position: absolute;
  top: 50%;
  right: 10%;
  width: 4.2rem;
  height: 4.2rem;
  background:
    linear-gradient(45deg, #fff 25%, transparent 25%) 0 0 / 50% 50%,
    linear-gradient(45deg, transparent 75%, #fff 75%) 0 0 / 50% 50%,
    linear-gradient(45deg, transparent 25%, #fff 25%) 50% 50% / 50% 50%,
    linear-gradient(45deg, #fff 75%, transparent 75%) 50% 50% / 50% 50%,
    #081f27;
  border: 0.35rem solid #fff;
  box-shadow: 0 0 0 1px var(--cyan);
  transform: translateY(-50%);
}

.dock-robot {
  position: absolute;
  top: 50%;
  left: 11%;
  z-index: 2;
  width: 4.4rem;
  height: 3rem;
  background: var(--navy-soft);
  border: 2px solid var(--cyan);
  border-radius: 45% 45% 25% 25%;
  transform: translateY(-50%);
}

.dock-robot::before,
.dock-robot::after {
  position: absolute;
  bottom: -0.5rem;
  width: 0.85rem;
  height: 0.85rem;
  background: var(--navy);
  border: 2px solid var(--cyan);
  border-radius: 50%;
  content: "";
}

.dock-robot::before { left: 0.45rem; }
.dock-robot::after { right: 0.45rem; }

.vision-cone {
  position: absolute;
  top: 50%;
  left: calc(11% + 4.3rem);
  width: 50%;
  height: 7rem;
  background: rgba(98, 214, 209, 0.08);
  clip-path: polygon(0 46%, 100% 0, 100% 100%, 0 54%);
  transform: translateY(-50%);
}

.docking-scene b {
  position: absolute;
  right: 8%;
  bottom: 0.9rem;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
}

/* Retheme existing project visuals */
.cartpole-scene,
.provider-orbit,
.robot-route {
  border-bottom: 1px solid rgba(98, 214, 209, 0.16);
}

.cartpole-rail,
.robot-route::before {
  background: var(--line-dark);
}

.project-terminal {
  padding: 1.5rem;
  background: rgba(3, 16, 21, 0.72);
  border-radius: 0;
}

.project-terminal code {
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.project-chart,
.forecast-scene {
  border-bottom: 1px solid rgba(98, 214, 209, 0.16);
}

.provider-orbit::before,
.provider-orbit::after {
  border-color: rgba(98, 214, 209, 0.2);
}

.projects-link {
  margin-top: 2rem;
  color: var(--cyan);
}

/* Skills */
.skills-section {
  background: rgba(251, 250, 246, 0.86);
}

.skill-matrix {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 2px solid var(--navy);
  border-left: 1px solid var(--line);
}

.skill-matrix > div {
  min-width: 0;
  grid-template-columns: minmax(9rem, 0.55fr) minmax(0, 1.45fr);
  gap: 1.25rem;
  padding: 1.45rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.skill-matrix dt {
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.45;
  text-transform: uppercase;
}

.skill-matrix dd {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

/* Education */
.education-section {
  background: var(--paper);
}

.education-layout {
  gap: clamp(3rem, 8vw, 8rem);
}

.compact-heading {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

.compact-heading h2 {
  max-width: none;
  font-size: clamp(2.35rem, 4vw, 3.8rem);
}

.education-list,
.credentials-list {
  border-top: 2px solid var(--navy);
}

.education-list article,
.credentials-list li {
  padding-block: 1.35rem;
}

.credentials-list strong {
  font-weight: 600;
}

.credentials-list span,
.education-list p:last-child {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

/* Contact and footer */
.contact-section {
  position: relative;
  overflow: hidden;
  background: var(--signal);
  color: var(--navy);
}

.contact-section::before {
  position: absolute;
  top: -11rem;
  right: -8rem;
  width: 30rem;
  height: 30rem;
  border: 1px solid rgba(8, 31, 39, 0.18);
  border-radius: 50%;
  box-shadow: 0 0 0 4rem rgba(8, 31, 39, 0.04);
  content: "";
}

.contact-layout {
  position: relative;
  grid-template-columns: minmax(0, 1.3fr) minmax(19rem, 0.7fr);
}

.contact-layout .section-code {
  margin-bottom: 1rem;
  color: var(--navy);
}

.contact-layout h2 {
  max-width: 16ch;
  color: var(--navy);
  font-size: clamp(2.65rem, 5vw, 5.35rem);
  font-weight: 600;
  letter-spacing: -0.07em;
  line-height: 0.91;
}

.contact-layout p:not(.section-code) {
  color: var(--navy);
}

.button-light {
  background: var(--navy);
  color: var(--cyan);
}

.button-outline-light {
  color: var(--navy);
  border-color: rgba(8, 31, 39, 0.62);
}

.button-outline-light:hover {
  background: rgba(8, 31, 39, 0.08);
  border-color: var(--navy);
}

.site-footer {
  background: var(--navy);
  color: rgba(255, 255, 255, 0.56);
  font-family: var(--font-mono);
}

.footer-layout p {
  font-size: 0.65rem;
  letter-spacing: 0.02em;
}

/* Progressive reveal: content remains visible without JavaScript */
.reveal-ready .reveal-item {
  opacity: 0;
  transform: translateY(1.2rem);
  transition: opacity 560ms var(--ease-out), transform 560ms var(--ease-out);
}

.reveal-ready .reveal-item.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 62rem) {
  .site-header {
    padding-inline: 1.5rem;
  }

  .primary-navigation {
    inset: var(--header-height) 0 auto;
    padding: 0 1.5rem 1.5rem;
    background: var(--navy);
    border-color: var(--line-dark);
    box-shadow: 0 1.4rem 2.5rem rgba(3, 16, 21, 0.28);
  }

  .primary-navigation a {
    color: rgba(255, 255, 255, 0.72);
    border-color: var(--line-dark);
  }

  .primary-navigation .nav-contact {
    justify-content: center;
    margin-top: 0.8rem;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 4rem;
  }

  .hero h1 {
    max-width: 12.5ch;
  }

  .hero-visual {
    width: min(100%, 30rem);
    justify-self: start;
  }

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

  .systems-layout {
    gap: 1.5rem;
  }

  .section-heading {
    align-items: start;
    gap: 1.2rem;
  }

  .section-heading h2 {
    max-width: 18ch;
  }

  .experience-identity {
    position: static;
    padding-bottom: 1rem;
  }

  .workstreams {
    border-left: 0;
  }

  .workstream {
    padding-left: 0;
  }

  .workstream::before {
    display: none;
  }

  .project-list {
    grid-template-columns: 1fr;
  }

  .featured-project {
    grid-column: auto;
    grid-template-columns: 1fr;
  }

  .contact-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 44rem) {
  :root {
    --header-height: 4.4rem;
  }

  .section-shell,
  .hero {
    width: min(calc(100% - 2rem), var(--max-width));
  }

  .site-header {
    padding-inline: 1rem;
  }

  .brand-copy small {
    display: none;
  }

  .brand-name {
    display: block;
  }

  .hero {
    gap: 3rem;
    padding-block: 3.25rem 3.75rem;
  }

  .hero h1 {
    font-size: clamp(3rem, 15vw, 4.85rem);
  }

  .hero-summary {
    font-size: 1rem;
  }

  .hero-actions .button {
    flex: 1 1 100%;
  }

  .hero-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-metrics > div {
    padding: 1rem 0.8rem;
  }

  .hero-metrics > div:nth-child(odd) {
    padding-left: 0;
    border-left: 0;
  }

  .hero-metrics > div:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  .hero-visual figcaption {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }

  .hero-visual figcaption span {
    text-align: left;
  }

  .systems-layout ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .section-heading h2,
  .contact-layout h2 {
    font-size: clamp(2.45rem, 12vw, 3.9rem);
  }

  .workstream {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .workstream > p:not(.workstream-tools),
  .workstream-tools {
    grid-column: 1;
  }

  .earlier-experience {
    grid-template-columns: 1fr;
  }

  .earlier-experience article,
  .earlier-experience article:not(:first-of-type) {
    padding: 1.5rem 0;
    border-left: 0;
    border-bottom: 1px solid var(--line);
  }

  .project-row,
  .featured-project {
    gap: 1.5rem;
    padding: 1.35rem;
  }

  .project-row:nth-child(n + 5) {
    padding: 1.25rem;
  }

  .project-copy h3 {
    font-size: clamp(1.75rem, 9vw, 2.55rem);
  }

  .fleet-scene,
  .cell-scene,
  .docking-scene {
    min-height: 13rem;
  }

  .fleet-track {
    width: 11.2rem;
    height: 7rem;
  }

  .cell-scene {
    padding: 1rem;
  }

  .cell-stations {
    grid-template-columns: 1fr 1rem 1fr 1rem 1fr;
  }

  .dock-marker {
    right: 7%;
    width: 3.4rem;
    height: 3.4rem;
  }

  .skill-matrix {
    grid-template-columns: 1fr;
  }

  .skill-matrix > div {
    grid-template-columns: 1fr;
    gap: 0.55rem;
  }

  .contact-actions .button {
    flex: 1 1 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal-ready .reveal-item,
  .reveal-ready .reveal-item.is-visible {
    opacity: 1;
    transform: none;
  }

  .cartpole-cart,
  .cartpole-pole {
    animation: none;
  }
}

@media print {
  body {
    background: #fff;
  }

  .hero-metrics {
    grid-template-columns: repeat(4, 1fr);
  }

  .projects-section,
  .contact-section {
    background: #fff;
    color: #000;
  }

  .projects-section .section-heading h2,
  .project-copy h3,
  .projects-section .section-heading > p:not(.section-code) {
    color: #000;
  }

  .project-row {
    background: transparent;
    border-color: #999;
  }

  .project-copy > p:not(.project-context, .project-note) {
    color: #333;
  }
}