/* Hallmark · macrostructure: Multi-page Index · tone: technical · anchor hue: green
 * theme: studied-DNA (structure + type scale: gwuah.com · palette: green on black)
 * source-url: https://www.gwuah.com/
 * paper: oklch(16% 0.012 250) · accent: oklch(78% 0.13 162) · green on black
 * display/body: Barlow (extralight display vs small body) · mono: IBM Plex Mono
 * pre-emit critique: P5 H4 E5 S5 R5 V5
 */

html {
  scroll-behavior: smooth;
  overflow-x: clip;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) var(--color-paper);
}

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: -0.01em;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

::selection {
  background: var(--color-accent);
  color: var(--color-paper);
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: var(--space-4);
  z-index: 1000;
  background: var(--color-accent);
  color: var(--color-paper);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius);
  font-size: var(--text-small);
  text-decoration: none;
  transition: top var(--dur-base) var(--ease-out);
}

.skip-link:focus {
  top: var(--space-4);
}

/* ---------------- page shell ---------------- */

.page {
  max-width: 44rem;
  margin: 0 auto;
  padding: var(--pad-top) var(--space-5) 0;
}

/* ---------------- header / nav ---------------- */

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.site-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-name);
  letter-spacing: -0.01em;
  color: var(--color-ink);
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex-direction: row;
  align-items: baseline;
  gap: var(--space-2);
  font-size: var(--text-body);
  color: var(--color-ink-3);
}

.site-nav a + a::before {
  content: "|";
  color: var(--color-ink-4);
  margin-right: var(--space-2);
}

.site-nav a {
  text-decoration: none;
  color: inherit;
  transition: color var(--dur-base) var(--ease-out);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--color-ink);
}

.site-nav a[aria-current="page"] {
  color: var(--color-accent);
}

/* ---------------- hero sentence ---------------- */

.hero {
  color: var(--color-ink-3);
  letter-spacing: -0.015em;
  font-size: var(--text-body);
  line-height: 1.45;
  margin-top: 0;
}

.em {
  color: var(--color-accent);
}

/* ---------------- intro ---------------- */

.intro {
  margin-top: var(--space-8);
  color: var(--color-ink-2);
  font-size: var(--text-body);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.intro p {
  margin: 0;
  line-height: 1.6;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.92em;
  letter-spacing: -0.01em;
}

.dim {
  color: var(--color-ink-4);
}

.inline-link {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--color-accent-dim);
}

.inline-link:hover,
.inline-link:focus-visible {
  color: var(--color-accent-strong);
  text-decoration-color: var(--color-accent);
}

/* ---------------- section heading ---------------- */

.section-heading {
  margin-top: var(--space-24);
  margin-bottom: var(--space-8);
}

.section-heading h2 {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: var(--text-display);
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0;
}

.section-heading .sub {
  color: var(--color-ink-4);
  font-weight: 300;
  font-size: var(--text-small);
  margin-top: var(--space-2);
}

/* ---------------- career timeline ---------------- */

.career {
  display: flex;
  flex-direction: column;
}

.entry {
  display: grid;
  grid-template-columns: 4.5rem 1.5rem minmax(0, 1fr);
  column-gap: var(--space-4);
  padding-bottom: var(--space-8);
}

.entry:last-child {
  padding-bottom: 0;
}

.timespan {
  text-align: right;
  color: var(--color-ink-3);
  font-size: var(--text-meta);
  letter-spacing: 0.02em;
  white-space: nowrap;
  padding-top: 0.35em;
  min-width: 0;
}

.rail {
  position: relative;
  align-self: stretch;
  border-left: var(--rule-hair) solid var(--color-border);
}

.entry-dot {
  position: absolute;
  top: 0.45em;
  left: -5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--color-accent) 22%, transparent);
}

.desc {
  min-width: 0;
  padding-top: 0.05em;
}

.job-role {
  font-weight: 600;
  font-size: var(--text-body);
  margin: 0;
}

.job-org {
  font-size: var(--text-body);
  color: var(--color-accent);
  margin-top: -2px;
}

.job-desc {
  margin-top: var(--space-3);
  color: var(--color-ink-2);
  font-size: var(--text-small);
  line-height: 1.6;
}

.job-points {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.job-points li {
  color: var(--color-ink-2);
  font-size: var(--text-small);
  line-height: 1.6;
  padding-left: var(--space-5);
  position: relative;
}

.job-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-accent);
}

.job-desc p {
  margin: 0;
}

/* ---------------- projects list ---------------- */

.projects {
  display: flex;
  flex-direction: column;
}

.project {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-4);
  padding-top: var(--space-6);
  margin-top: var(--space-6);
  border-top: var(--rule-hair) solid var(--color-border-soft);
}

.project:first-child {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

.project-thumb {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-ink-4);
}

.project-thumb svg {
  transition: color var(--dur-base) var(--ease-out);
}

.project:hover .project-thumb,
.project:focus-within .project-thumb {
  color: var(--color-accent);
}

.project-content {
  min-width: 0;
  margin-top: -6px;
}

.project-title {
  font-weight: 600;
  font-size: var(--text-small);
}

.project-title a {
  color: var(--color-accent);
  text-decoration: none;
}

.project-title a:hover,
.project-title a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.project-desc {
  color: var(--color-ink-2);
  font-size: var(--text-small);
  line-height: 1.6;
  margin-top: var(--space-1);
}

.project-desc p {
  margin: 0;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.chip {
  background: var(--color-paper-2);
  border-radius: 999px;
  padding: 2px var(--space-3);
  font-size: var(--text-meta);
  letter-spacing: 0.02em;
  color: var(--color-ink-3);
}

/* ---------------- about / now shared ---------------- */

.bio {
  margin-top: var(--space-8);
  color: var(--color-ink-2);
  font-size: var(--text-body);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  max-width: 40rem;
}

.bio p {
  margin: 0;
  line-height: 1.65;
}

.about-section-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-body);
  color: var(--color-ink);
  margin: 0 0 var(--space-4);
}

.about-block {
  margin-top: var(--space-12);
}

.about-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.about-list li {
  color: var(--color-ink-2);
  font-size: var(--text-small);
  padding-left: var(--space-5);
  position: relative;
}

.about-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-accent);
}

.about-cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-10);
}

.now-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-8);
  color: var(--color-ink);
  font-size: var(--text-body);
}

.now-dot {
  width: 0.5rem;
  height: 0.5rem;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--color-accent) 22%, transparent);
}

/* ---------------- footer ---------------- */

.site-footer {
  margin-top: var(--space-24);
  padding-top: var(--space-8);
  border-top: var(--rule-hair) solid var(--color-border-soft);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-6);
}

.foot-line {
  margin: 0;
  color: var(--color-ink-3);
  font-size: var(--text-small);
}

.foot-email {
  color: var(--color-accent);
  font-size: var(--text-small);
  text-decoration: none;
  overflow-wrap: anywhere;
}

.foot-email:hover,
.foot-email:focus-visible {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.foot-links {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  font-size: var(--text-small);
  color: var(--color-ink-4);
}

.foot-link {
  color: var(--color-ink-3);
  text-decoration: none;
  transition: color var(--dur-base) var(--ease-out);
}

.foot-link:hover,
.foot-link:focus-visible {
  color: var(--color-ink);
}

/* ---------------- under-construction page ---------------- */

.construction {
  margin-top: var(--space-12);
}

.construction-prompt {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.cursor {
  display: inline-block;
  width: 0.5em;
  height: 1.05em;
  background: var(--color-accent);
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

.construction-title {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: var(--text-display);
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: var(--space-6) 0 var(--space-4);
}

.construction-sub {
  color: var(--color-ink-2);
  font-size: var(--text-small);
  line-height: 1.65;
  max-width: 34rem;
  margin: 0;
}

/* ---------------- focus ---------------- */

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ---------------- reduced motion ---------------- */

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

  .cursor {
    animation: none;
  }
}

/* ---------------- responsive ---------------- */

@media (max-width: 640px) {
  .page {
    padding: 48px var(--space-4) 0;
  }

  .site-header {
    flex-wrap: wrap;
    row-gap: var(--space-3);
  }

  .site-name {
    font-size: 1.2rem;
  }

  .section-heading {
    margin-top: var(--space-16);
  }

  .site-footer {
    margin-top: var(--space-16);
  }

  .entry {
    grid-template-columns: 4.5rem 1.25rem minmax(0, 1fr);
    column-gap: var(--space-3);
  }

  .about-cols {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}