/*
 * Signal Forge v4.1 — KrawMire design code
 * Neo-brutalist build quality with a precise, technical surface.
 * See README.md for the full design system description.
 */

/* ===================================================================
   01 / TOKENS
   =================================================================== */

:root {
  /* Colour — the softened Field palette. Text on every fill is carbon. */
  --carbon:   #2A2C30; /* ink, outlines, shadows, dark bands */
  --bone:     #E6E4DC; /* page ground */
  --paper:    #F4F3EE; /* alt bands, cards */
  --white:    #FFFFFF; /* card faces, tags */
  --graphite: #4A4C52; /* body copy, captions */
  --lime:     #C9E66B; /* signal: action, selection */
  --rose:     #EE6A9E; /* Finstar, focus ring */
  --ember:    #EE8A4E; /* Cartis, tags */
  --teal:     #6FD3D0; /* OptimaJet, secondary */

  --carbon-2: #33363B; /* raised surface on carbon */
  --on-carbon-muted: #A9AAA6;
  --grid-line: rgba(42, 44, 48, 0.07);

  /* Type */
  --font-sans: "Geologica", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  /* Elevation — hard offset shadows, down-right, never blurred */
  --shadow-sm: 3px;
  --shadow-md: 4px;
  --shadow-lg: 6px;
  --shadow-xl: 8px;
  --shadow-color: var(--carbon);

  /* Outline */
  --line: 2px;
  --outline: var(--line) solid var(--carbon);

  /* Spacing — 4px grid */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;

  /* Motion */
  --ease: cubic-bezier(.3, .7, .4, 1);
  --dur: 120ms;

  /* Layout */
  --container: 1240px;
  --gutter: clamp(16px, 5vw, 48px);
  --header-h: 72px;

  color-scheme: light;
}

/* ===================================================================
   02 / BASE
   =================================================================== */

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + var(--space-4));
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bone);
  color: var(--carbon);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.55;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p, figure { margin: 0; }
button { font: inherit; color: inherit; cursor: pointer; }

::selection { background: var(--lime); color: var(--carbon); }

:focus-visible {
  outline: 3px solid var(--rose);
  outline-offset: 3px;
}

.container {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.mono {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
}

.arrow { font-family: var(--font-mono); font-weight: 700; }

/* ===================================================================
   03 / TYPE
   Geologica covers Latin, Cyrillic and Greek, so display type stays
   heavy without a condensed width axis. Mono stays for labels.
   =================================================================== */

.display,
.h2,
.role__title,
.project__name,
.stat__value {
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.02em;
}

.display {
  font-size: clamp(52px, 7vw, 104px);
  line-height: 0.92;
  letter-spacing: -0.03em;
}

.display__dot {
  display: inline-block;
  width: 0.26em;
  height: 0.26em;
  margin-left: 0.08em;
  background: var(--rose);
  border: var(--outline);
  vertical-align: baseline;
}

.h2 {
  font-size: clamp(36px, 4.2vw, 56px);
  line-height: 0.98;
  letter-spacing: -0.025em;
}

.h3 {
  font-size: 22px;
  line-height: 1.15;
  font-weight: 800;
}

.lede {
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.18;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.hl {
  background: var(--lime);
  color: var(--carbon);
  border: var(--outline);
  padding: 0 0.15em;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

/* ===================================================================
   04 / COMPONENTS
   =================================================================== */

/* Raised: the shared neo-brutalist mechanic — outline + hard shadow,
   hover lifts 2px up-left and grows the shadow, press sinks onto it. */
.btn,
.link-chip,
.menu-btn {
  --rest: var(--shadow-md);
  border: var(--outline);
  box-shadow: var(--rest) var(--rest) 0 var(--shadow-color);
  transition:
    transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease),
    background-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.btn:hover,
.link-chip:hover,
.menu-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: calc(var(--rest) + 2px) calc(var(--rest) + 2px) 0 var(--shadow-color);
}

.btn:active,
.link-chip:active,
.menu-btn:active {
  transform: translate(var(--rest), var(--rest));
  box-shadow: 0 0 0 var(--shadow-color);
}

/* Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  min-height: 52px;
  padding: var(--space-3) var(--space-6);
  background: var(--paper);
  color: var(--carbon);
  font-size: 17px;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
}

.btn--primary { background: var(--carbon); color: var(--lime); }
.btn--lime    { background: var(--lime); }
.btn--teal    { background: var(--teal); }
.btn--sm      { min-height: 40px; padding: var(--space-2) var(--space-4); font-size: 15px; --rest: var(--shadow-sm); }

/* Label — numbered section label */
.label {
  display: inline-block;
  padding: var(--space-1) var(--space-2);
  background: var(--carbon);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  line-height: 1.4;
}

.label--lime { background: var(--lime); color: var(--carbon); }

/* Tag */
.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-2);
  border: var(--outline);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.3;
  white-space: nowrap;
}

.tag.mono { font-size: 11px; font-weight: 700; }
.tag--ember   { background: var(--ember); }
.tag--dark    { background: var(--carbon); color: var(--lime); border-color: var(--carbon); }
.tag--outline { background: var(--white); }

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* Square — small colour marker */
.square {
  display: inline-block;
  flex: none;
  width: 14px;
  height: 14px;
  border: var(--outline);
}

.square--lime  { background: var(--lime); }
.square--rose  { background: var(--rose); }
.square--teal  { background: var(--teal); }
.square--ember { background: var(--ember); }

/* Chip — mono tech tag */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.chip {
  padding: 3px var(--space-2);
  background: var(--white);
  border: var(--outline);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.4;
}

/* Link chip */
.link-chip {
  --rest: 0px;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px var(--space-3);
  background: var(--white);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
}

.link-chip:hover { background: var(--lime); }

/* Text link */
.text-link {
  font-weight: 700;
  border-bottom: var(--outline);
  padding-bottom: 2px;
  transition: background-color var(--dur) var(--ease);
}

.text-link:hover { background: var(--lime); }

/* Ruler — lime tick ruler at the hero and footer edges */
.ruler {
  height: 14px;
  background:
    repeating-linear-gradient(90deg, var(--carbon) 0 2px, transparent 2px 20px),
    var(--lime);
  border-block: var(--outline);
}

.ruler--ticks {
  height: 10px;
  border: 0;
  background:
    repeating-linear-gradient(90deg, var(--carbon) 0 2px, transparent 2px 20px) bottom / 100% 6px no-repeat,
    var(--lime);
}

/* ===================================================================
   05 / LAYOUT — bands & sections
   =================================================================== */

.band { border-top: var(--outline); }
.band--bone   { background: var(--bone); }
.band--paper  { background: var(--paper); }
.band--carbon { background: var(--carbon); color: var(--bone); --shadow-color: var(--lime); }
.band--lime   { background: var(--lime); }

.section { padding-block: clamp(64px, 9vw, 120px); }

.section-head { margin-bottom: clamp(32px, 4vw, 48px); }
.section-head .label { margin-bottom: var(--space-4); }

.section-head--split {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-6);
}

/* ===================================================================
   06 / HEADER
   =================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bone);
  border-bottom: var(--outline);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  height: var(--header-h);
}

.brand { display: flex; align-items: center; gap: var(--space-3); }

.brand__mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  background: var(--lime);
  border: var(--outline);
  box-shadow: var(--shadow-sm) var(--shadow-sm) 0 var(--carbon);
  font-weight: 900;
  font-size: 22px;
}

.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name { font-weight: 900; font-size: 18px; letter-spacing: -0.02em; text-transform: uppercase; }
.brand__role {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--graphite);
}

.site-nav { display: flex; align-items: center; gap: var(--space-6); }
.site-nav__list { display: flex; gap: var(--space-1); }

.nav-link {
  display: inline-flex;
  align-items: flex-start;
  gap: 4px;
  padding: var(--space-2) var(--space-3);
  border: var(--line) solid transparent;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.2;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.nav-link__num {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  color: var(--graphite);
}

.nav-link:hover,
.nav-link.is-active {
  border-color: var(--carbon);
  background: var(--white);
}

.menu-btn {
  --rest: var(--shadow-sm);
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 44px;
  height: 44px;
  padding: 0 11px;
  background: var(--paper);
}

.menu-btn span {
  display: block;
  height: 2px;
  background: var(--carbon);
}

.menu-btn span:nth-child(3) { width: 60%; }

/* ===================================================================
   07 / HERO
   =================================================================== */

.hero {
  background-color: var(--bone);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 40px 40px;
  background-position: -1px -1px;
}

.hero .container { padding-block: var(--space-6) clamp(48px, 6vw, 80px); }

.hero__meta {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: clamp(32px, 5vw, 64px);
}

.hero__status { display: inline-flex; align-items: center; gap: var(--space-2); }
.hero__status .square { width: 12px; height: 12px; }

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 80px);
  align-items: end;
}

.hero__copy .lede { margin-top: clamp(32px, 4vw, 48px); max-width: 15em; }

.hero__text {
  margin-top: var(--space-6);
  max-width: 32em;
  color: var(--graphite);
}

.hero__actions {
  display: grid;
  grid-template-columns: repeat(2, max-content);
  gap: var(--space-4);
  margin-top: var(--space-8);
}

/* Portrait */
.portrait {
  position: relative;
  justify-self: end;
  width: 100%;
  max-width: 440px;
}

.portrait__frame {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border: var(--outline);
  box-shadow: var(--shadow-xl) var(--shadow-xl) 0 var(--carbon);
  background-color: var(--lime);
  background-image:
    linear-gradient(rgba(42, 44, 48, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 44, 48, 0.1) 1px, transparent 1px);
  background-size: 32px 32px;
}

.portrait__img {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 130%;
  max-width: none;
  height: auto;
  transform: translateX(-50%);
}

.portrait__tag {
  position: absolute;
  left: calc(var(--space-6) * -1);
  bottom: var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-4);
  background: var(--paper);
  border: var(--outline);
  box-shadow: var(--shadow-lg) var(--shadow-lg) 0 var(--carbon);
}

.portrait__name {
  font-weight: 900;
  font-size: 20px;
  letter-spacing: -0.02em;
  line-height: 1;
  text-transform: uppercase;
}

.portrait__handle { font-size: 10px; text-transform: none; letter-spacing: 0.04em; color: var(--graphite); }
.portrait__tag .tag { margin-top: var(--space-2); }

/* ===================================================================
   08 / STATS
   =================================================================== */

.stats-band { border-top: 0; padding-block: clamp(40px, 5vw, 56px); }

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}

.stat {
  display: flex;
  flex-direction: column;
  padding: var(--space-6);
  border: var(--outline);
  box-shadow: var(--shadow-lg) var(--shadow-lg) 0 var(--carbon);
}

.stat--lime { background: var(--lime); }
.stat--rose { background: var(--rose); }
.stat--teal { background: var(--teal); }

.stat__label { font-size: 11px; }

.stat__value {
  margin-top: var(--space-2);
  font-size: clamp(48px, 5vw, 64px);
  line-height: 0.95;
}

.stat__text { margin-top: var(--space-3); font-size: 15px; font-weight: 500; line-height: 1.4; }

/* ===================================================================
   09 / ABOUT
   =================================================================== */

.about {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: clamp(32px, 5vw, 64px);
}

.about .section-head { margin-bottom: 0; }

.about__text { display: grid; gap: var(--space-4); color: var(--graphite); }

.about__lead {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--carbon);
}

.skills {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-6);
  margin-top: clamp(48px, 6vw, 72px);
}

.skill {
  padding: var(--space-5);
  background: var(--white);
  border: var(--outline);
  box-shadow: var(--shadow-lg) var(--shadow-lg) 0 var(--carbon);
}

.skill__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-4);
}

.skill__top .square { width: 24px; height: 24px; }
.skill__num { font-size: 11px; color: var(--graphite); }
.skill__text { margin-top: var(--space-3); font-size: 16px; font-weight: 650; line-height: 1.4; color: var(--carbon); }
.skill__more {
  margin-top: var(--space-3);
  font-size: 15px;
  line-height: 1.5;
  color: var(--graphite);
}

/* ===================================================================
   10 / EXPERIENCE — timeline (signature component)
   =================================================================== */

.band--carbon .h2 { color: var(--bone); }

.legend { display: flex; flex-wrap: wrap; gap: var(--space-3); }

.legend__item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px var(--space-3);
  border: var(--line) solid var(--bone);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.2;
}

.legend__item .square { border-color: transparent; }

.trace {
  --label-col: 260px;
  --len-col: 100px;
  border: var(--line) solid var(--bone);
  box-shadow: var(--shadow-lg) var(--shadow-lg) 0 var(--lime);
}

.trace__head,
.trace-row {
  display: grid;
  grid-template-columns: var(--label-col) 1fr var(--len-col);
  align-items: center;
  column-gap: var(--space-4);
  padding-inline: var(--space-4);
}

.trace__head {
  min-height: 44px;
  border-bottom: var(--line) solid var(--bone);
  font-size: 11px;
  color: var(--on-carbon-muted);
}

.trace__years { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); }
.trace__years span { min-width: 0; text-align: center; }
.trace__year-short { display: none; }
.trace__len, .trace-row__len { text-align: right; }

.trace-row {
  position: relative;
  width: 100%;
  min-height: 64px;
  padding-block: var(--space-3);
  background: transparent;
  border: 0;
  border-top: 1px solid rgba(230, 228, 220, 0.12);
  color: var(--bone);
  text-align: left;
  transition: background-color var(--dur) var(--ease);
}

.trace-row:first-child { border-top: 0; }
.trace-row:hover { background: rgba(230, 228, 220, 0.05); }
.trace-row[aria-expanded="true"] { background: var(--carbon-2); }

.trace-row::before {
  content: "▸";
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--on-carbon-muted);
  font-size: 12px;
  line-height: 1;
}

.trace-row[aria-expanded="true"]::before {
  content: "▾";
  color: var(--lime);
}

.trace-row__label { display: flex; flex-direction: column; gap: 2px; padding-left: var(--space-6); }
.trace-row__org { font-size: 10px; color: var(--on-carbon-muted); }
.trace-row__title { font-weight: 700; font-size: 15px; line-height: 1.25; }
.trace-row__len {
  font-size: 13px;
  text-transform: none;
  letter-spacing: 0.02em;
  color: var(--bone);
  white-space: nowrap;
}

.trace-row__track {
  position: relative;
  height: 32px;
  background-image: repeating-linear-gradient(90deg, rgba(230, 228, 220, 0.14) 0 1px, transparent 1px calc(100% / var(--years, 7)));
}

.trace-row__bar {
  position: absolute;
  top: 50%;
  left: var(--from);
  width: var(--span);
  min-width: 8px;
  height: 18px;
  transform: translateY(-50%);
  background: var(--c);
  transition: box-shadow var(--dur) var(--ease);
}

.trace-row[aria-selected="true"] .trace-row__bar {
  border: var(--line) solid var(--bone);
  box-shadow: var(--shadow-sm) var(--shadow-sm) 0 var(--lime);
}

/* Role detail sits in the trace, directly under the selected span */
.roles:empty { display: none; }

.trace__rows > .role {
  margin: 0 var(--space-4) var(--space-5);
}

.role {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 2fr);
  gap: clamp(24px, 4vw, 48px);
  padding: clamp(24px, 3vw, 32px);
  background: var(--paper);
  color: var(--carbon);
  border: var(--outline);
  box-shadow: var(--shadow-lg) var(--shadow-lg) 0 var(--c);
}

.role[hidden] { display: none; }

.role__side { display: flex; flex-direction: column; align-items: flex-start; }

.tag--company { background: var(--c); }

.role__title {
  margin-top: var(--space-4);
  font-size: clamp(24px, 2.4vw, 32px);
  line-height: 1.02;
}

.role__org { margin-top: var(--space-4); font-weight: 700; }
.role__side .chips { margin-top: var(--space-5); }

.role__mini { display: none; }

.role__list { counter-reset: item; align-self: start; }

.role__list li {
  counter-increment: item;
  display: grid;
  grid-template-columns: 40px 1fr;
  padding-block: var(--space-3);
  border-bottom: 1px solid rgba(42, 44, 48, 0.18);
  font-size: 16px;
  line-height: 1.5;
}

.role__list li:first-child { padding-top: 0; }

.role__list li::before {
  content: counter(item, decimal-leading-zero);
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

[data-company="rose"]  { --c: var(--rose); }
[data-company="ember"] { --c: var(--ember); }
[data-company="teal"]  { --c: var(--teal); }

/* Mobile role list (hidden on desktop) */
.role-list { display: none; }

.education {
  display: grid;
  grid-template-columns: auto 1fr 1fr;
  align-items: end;
  gap: var(--space-8);
  margin-top: clamp(40px, 5vw, 56px);
}

.education__label { font-size: 12px; color: var(--lime); }

.education__item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: var(--line) solid var(--bone);
}

.education__name { font-weight: 700; }
.education__years { font-size: 12px; white-space: nowrap; }

/* ===================================================================
   11 / PROJECTS
   =================================================================== */

.projects {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}

.project {
  position: relative;
  container-type: inline-size;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: var(--outline);
  box-shadow: var(--shadow-lg) var(--shadow-lg) 0 var(--carbon);
}

.project--lime  { --c: var(--lime); }
.project--rose  { --c: var(--rose); }
.project--teal  { --c: var(--teal); }
.project--ember { --c: var(--ember); }

.project__head {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: var(--c);
  border-bottom: var(--outline);
}

.project__mono {
  display: grid;
  place-items: center;
  flex: none;
  min-width: 48px;
  height: 48px;
  padding-inline: 8px;
  background: var(--paper);
  border: var(--outline);
  font-weight: 900;
  font-size: 16px;
}

.project__id {
  flex: 1;
  min-width: 0;
}

.project__name {
  min-width: 0;
  font-size: clamp(22px, 2.2vw, 32px);
  line-height: 1.02;
}

.project__summary {
  margin-top: 6px;
  font-size: 14px;
  font-weight: 650;
  line-height: 1.35;
}

.project__body {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
  flex: 1;
  padding: var(--space-5);
}

.project__kind { font-size: 11px; color: var(--graphite); }
.project__text { flex: 1; font-size: 16px; }
.project__links { display: flex; flex-wrap: wrap; gap: var(--space-3); }

/* Narrow cards: tag drops under the name so long titles stay intact */
@container (max-width: 520px) {
  .project__head {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    column-gap: var(--space-3);
    row-gap: 8px;
    align-items: center;
  }
  .project__mono { grid-row: 1 / span 2; }
  .project__name { font-size: 24px; }
  .project__head .tag { justify-self: start; }
}

/* ===================================================================
   12 / STACK
   Level is fill + solid/dashed border + ↑, never colour alone.
   =================================================================== */

.stack-hint {
  margin-top: var(--space-4);
  max-width: 28em;
  color: var(--graphite);
  font-size: 15px;
  line-height: 1.4;
}

.stack-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: 14px;
  font-weight: 500;
}

.stack-legend li { display: inline-flex; align-items: center; gap: var(--space-2); }

.swatch { width: 18px; height: 12px; border: var(--outline); }
.swatch--core { background: var(--carbon); }
.swatch--prod { background: var(--white); }
.swatch--grow { background: var(--lime); border-style: dashed; }

.stack-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}

.stack-group {
  background: var(--white);
  border: var(--outline);
  box-shadow: var(--shadow-lg) var(--shadow-lg) 0 var(--carbon);
}

.stack-group--lime  { --c: var(--lime); }
.stack-group--teal  { --c: var(--teal); }
.stack-group--rose  { --c: var(--rose); }
.stack-group--ember { --c: var(--ember); }

.stack-group__title {
  padding: var(--space-3) var(--space-4);
  background: var(--c);
  border-bottom: var(--outline);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.2;
}

.stack-group__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-4);
}

.stack-group__tags > li,
.stack-flat > li { display: contents; }

.stack-tag {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 4px 10px;
  background: var(--white);
  border: var(--outline);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.4;
  text-align: left;
}

button.stack-tag[data-tip] { cursor: help; }

.stack-tag--core { background: var(--carbon); color: var(--bone); font-weight: 700; }
.stack-tag--grow { background: var(--lime); border-style: dashed; font-weight: 700; }
.stack-tag--more { cursor: pointer; font-weight: 700; }
.stack-tag--more:hover { background: var(--lime); }

.stack-flat { display: none; }

/* Stack tooltip — one floating note, positioned in script.js */
.tip {
  position: fixed;
  z-index: 70;
  max-width: min(300px, calc(100vw - 24px));
  padding: 10px 12px;
  background: var(--carbon);
  color: var(--bone);
  border: var(--line) solid var(--lime);
  box-shadow: var(--shadow-md) var(--shadow-md) 0 var(--lime);
  font-size: 14px;
  line-height: 1.45;
  pointer-events: none;
}

.tip[hidden] { display: none; }

/* ===================================================================
   13 / CONTACT
   =================================================================== */

.contact__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(40px, 6vw, 80px);
  align-items: end;
}

.contact__title {
  font-size: clamp(40px, 5vw, 72px);
  line-height: 0.95;
  letter-spacing: -0.03em;
  max-width: 9em;
}

.contact__copy .label { margin-bottom: var(--space-4); }
.contact__text { margin-block: var(--space-6) var(--space-8); max-width: 26em; }

.contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.contact-rows {
  background: var(--paper);
  border: var(--outline);
  box-shadow: var(--shadow-lg) var(--shadow-lg) 0 var(--carbon);
}

.contact-rows li + li { border-top: var(--outline); }

.contact-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  min-height: 56px;
  padding: var(--space-3) var(--space-4);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.contact-row__key { font-size: 11px; text-transform: none; letter-spacing: 0.04em; }
.contact-row__val { font-weight: 800; font-size: 17px; }

.contact-row:hover,
.contact-row:focus-visible {
  background: var(--carbon);
  color: var(--lime);
}

/* ===================================================================
   14 / FOOTER
   =================================================================== */

.site-footer { background: var(--carbon); color: var(--bone); }

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-2) var(--space-6);
  padding-block: var(--space-5);
  font-size: 11px;
  text-transform: none;
  letter-spacing: 0.04em;
}

.site-footer__meta { color: var(--on-carbon-muted); }

/* ===================================================================
   15 / RESPONSIVE
   =================================================================== */

@media (max-width: 1080px) {
  .skills { grid-template-columns: repeat(1, minmax(0, 1fr)); }
  .stack-groups { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .trace { --label-col: 220px; --len-col: 84px; }
}

@media (max-width: 900px) {
  :root { --header-h: 64px; }

  /* Header → menu */
  .menu-btn { display: flex; }

  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-4);
    padding: var(--space-4) var(--gutter) var(--space-6);
    background: var(--bone);
    border-bottom: var(--outline);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility 0s linear var(--dur);
  }

  .site-nav.is-open {
    transform: none;
    opacity: 1;
    visibility: visible;
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
  }

  .site-nav__list { flex-direction: column; }
  .nav-link { width: 100%; padding: var(--space-3); font-size: 18px; }

  /* Hero */
  .hero__meta { padding-bottom: var(--space-3); border-bottom: 1px solid rgba(42, 44, 48, 0.3); margin-bottom: var(--space-8); }
  .hero__grid { grid-template-columns: 1fr; }
  .hero__copy { display: contents; }
  .display { order: 1; }
  .portrait { order: 2; justify-self: stretch; max-width: none; margin-top: var(--space-4); }
  .hero__copy .lede { order: 3; margin-top: var(--space-4); }
  .hero__text { order: 4; margin-top: 0; }
  .hero__actions { order: 5; margin-top: 0; }

  .portrait__frame { aspect-ratio: 1 / 1; }
  .portrait__img { width: 108%; transform: translateX(-50%); }
  .portrait__name,
  .portrait__handle { display: none; }
  .portrait__tag {
    left: calc(var(--space-2) * -1);
    bottom: var(--space-4);
    padding: 0;
    background: none;
    border: 0;
    box-shadow: none;
  }
  .portrait__tag .tag {
    margin: 0;
    padding: 6px var(--space-3);
    font-size: 15px;
    box-shadow: var(--shadow-sm) var(--shadow-sm) 0 var(--carbon);
  }

  /* Stats */
  .stats { grid-template-columns: 1fr; gap: var(--space-5); }
  .stat {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    column-gap: var(--space-4);
  }
  .stat__label { display: none; }
  .stat__value { margin: 0; font-size: 44px; white-space: nowrap; }
  .stat__text { margin: 0; }

  /* About */
  .about { grid-template-columns: 1fr; gap: var(--space-6); }
  .about__lead { display: none; }

  /* Experience: the same trace as desktop. The detail card stacks so it fits. */
  .role { grid-template-columns: 1fr; gap: var(--space-5); }
  .role__list li { font-size: 16px; }
  .education { grid-template-columns: 1fr; gap: var(--space-4); }

  /* Projects: every card keeps the full desktop layout */
  .projects { grid-template-columns: 1fr; }

  /* Stack */
  .stack-legend { display: none; }
  .stack-flat { display: flex; flex-wrap: wrap; gap: var(--space-3); }
  .stack-flat .stack-tag { padding: 8px 14px; font-size: 14px; }
  .stack-groups { display: none; grid-template-columns: 1fr; margin-top: var(--space-8); }
  .stack-groups.is-open { display: grid; }

  /* Contact */
  .contact__grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .trace__head,
  .trace-row {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "label len"
      "track track";
    column-gap: 8px;
    row-gap: 6px;
    padding-inline: 10px;
    align-items: start;
  }
  .trace__head > :first-child,
  .trace-row__label { grid-area: label; }
  .trace__years,
  .trace-row__track { grid-area: track; }
  .trace__len,
  .trace-row__len { grid-area: len; }
  .trace__head { font-size: 10px; letter-spacing: 0; }
  .trace__years span { font-size: 10px; letter-spacing: 0; }
  .trace-row { min-height: 0; padding-block: 10px; }
  .trace-row__label { padding-left: 16px; padding-top: 1px; }
  .trace-row__title { font-size: 14px; }
  .trace-row::before { top: 12px; left: 10px; transform: none; }
  .trace__rows > .role { margin: 0 8px 10px; }
}

@media (max-width: 560px) {
  .hero__actions { display: grid; grid-template-columns: 1fr 1fr; }
  .btn--wide-mobile { grid-column: 1 / -1; justify-content: space-between; min-height: 64px; }
  .contact .btn--wide-mobile { width: 100%; font-size: 15px; }
  .hero__meta .mono { font-size: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0ms !important; }
}