/* =================================================================
   JENNY LI — UX RESEARCH PORTFOLIO
   Design system: "Research Dossier" — editorial/typographic
   ================================================================= */

:root {
  /* ---- color tokens ---- */
  --paper:        #FAFAF7;
  --paper-card:   #FFFFFF;
  --ink:          #16181D;
  --ink-soft:     #44474D;
  --ink-faint:    #74736E;
  --indigo:       #D17872;
  --indigo-deep:  #B2564F;
  --ochre:        #2C7A70;
  --ochre-soft:   #8FC2BA;
  --mist:         #E7E6E1;
  --line:         rgba(22, 24, 29, 0.14);
  --line-soft:    rgba(22, 24, 29, 0.08);
  --redaction:    #16181D;

  /* ---- type ---- */
  --font-display: 'Lexend', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;
  --font-mono:    'Roboto Mono', 'SFMono-Regular', Consolas, monospace;

  /* ---- layout ---- */
  --maxw: 1280px;
  --col-text: 700px;
}

/* ---------------------------------------------------------------
   Reset & base
   --------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; margin: 0; line-height: 1.08; }
p { margin: 0 0 1.2em; }
ul { margin: 0 0 1.2em; padding-left: 1.2em; }
li { margin-bottom: 0.4em; }

:focus-visible {
  outline: 2px solid var(--indigo);
  outline-offset: 3px;
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap;
}

/* ---------------------------------------------------------------
   Utility: eyebrow / mono labels
   --------------------------------------------------------------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--indigo);
  font-weight: 500;
}
.eyebrow--muted { color: var(--ink-faint); }

/* ---------------------------------------------------------------
   Signature element: the redaction bar
   A recurring motif drawn from Jenny's own research artifacts —
   the black bars she uses to anonymize interview quotes.
   --------------------------------------------------------------- */
.redaction-rule {
  height: 9px;
  background: var(--redaction);
  border-radius: 1px;
  width: 100%;
}
.redaction-rule--short { width: 64px; }

.redaction-wrap {
  position: relative;
  display: inline-block;
}
.redaction-bar {
  position: absolute;
  inset: 0;
  background: var(--redaction);
  transform-origin: left center;
  animation: lift-redaction 1.1s 0.5s cubic-bezier(.65,0,.35,1) forwards;
}
@keyframes lift-redaction {
  to { transform: scaleX(0); }
}
@media (prefers-reduced-motion: reduce) {
  .redaction-bar { display: none; }
}

/* ---------------------------------------------------------------
   Tag chips (method tags — card sorting, interviews, etc.)
   --------------------------------------------------------------- */
.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; list-style: none; padding: 0; margin: 0; }
.tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  padding: 0.3em 0.6em;
  border-radius: 2px;
  white-space: nowrap;
  background: var(--paper-card);
}

/* ---------------------------------------------------------------
   Header / nav
   --------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-logo {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  font-weight: 500;
  color: var(--ink);
}
.site-nav { display: flex; gap: 1.75rem; }
.site-nav a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink-soft);
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}
.site-nav a:hover { color: var(--indigo); border-color: var(--indigo); }

.back-link {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink-soft);
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
}
.back-link:hover { color: var(--indigo); }

/* ---------------------------------------------------------------
   Containers
   --------------------------------------------------------------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 1.5rem; }
.wrap--text { max-width: var(--col-text); margin: 0 auto; padding: 0 1.5rem; }

section { padding: 4.5rem 0; }
@media (max-width: 720px) {
  section { padding: 3rem 0; }
}

/* ---------------------------------------------------------------
   Hero (home)
   --------------------------------------------------------------- */
.hero { padding: 5rem 0 3.5rem; }
.hero__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 3rem;
  align-items: end;
}
.hero__headline {
  font-size: clamp(2.6rem, 5.4vw, 4.6rem);
  letter-spacing: -0.01em;
}
.hero__headline em {
  font-style: italic;
  color: var(--indigo);
}
.typewriter-cursor {
  color: var(--ink);
  font-weight: 300;
  animation: blink-cursor 0.7s step-end infinite;
}
@keyframes blink-cursor {
  50% { opacity: 0; }
}
.hero__role {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--ink-soft);
  margin-top: 1.4rem;
  line-height: 1.6;
}
.hero__role .path-sep { color: var(--ochre); padding: 0 0.35em; }

@media (max-width: 860px) {
  .hero__grid { grid-template-columns: 1fr; gap: 1.5rem; }
}

.intro {
  padding-top: 0;
  padding-bottom: 3.5rem;
}
.intro__grid {
  display: grid;
  grid-template-columns: 7fr 3fr;
  gap: 3rem;
}
.intro p {
  font-size: 1.15rem;
  color: var(--ink-soft);
}
.intro p:first-of-type {
  font-size: 1.3rem;
  color: var(--ink);
}
.intro__aside {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
  line-height: 1.9;
  border-left: 1px solid var(--line);
  padding-left: 1.5rem;
}
.intro__aside strong {
  display: block;
  color: var(--indigo);
  font-weight: 500;
  margin-bottom: 0.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.7rem;
}
.tool-group {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 0.5rem;
  margin-bottom: 0.3rem;
}
.tool-group__label {
  color: var(--ink-soft);
  font-weight: 500;
  text-transform: uppercase;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  padding-top: 0.05em;
}
@media (max-width: 860px) {
  .intro__grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .intro__aside { border-left: none; border-top: 1px solid var(--line); padding-left: 0; padding-top: 1.2rem; }
}

/* ---------------------------------------------------------------
   Working principles (home — how I work)
   --------------------------------------------------------------- */
.principles { padding-bottom: 3.5rem; }
.principles__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem 3rem;
  border-top: 1px solid var(--ink);
  padding-top: 2.5rem;
}
.principle__icon {
  display: block;
  color: var(--ochre);
  margin-bottom: 0.9rem;
}
.principle__icon svg {
  width: 32px;
  height: 32px;
  display: block;
}
.principle__title {
  font-size: 1.2rem;
  color: var(--ink);
  margin-bottom: 0.6rem;
}
.principle__desc {
  font-size: 1rem;
  color: var(--ink-soft);
  line-height: 1.6;
}
@media (max-width: 700px) {
  .principles__grid { grid-template-columns: 1fr; gap: 2rem; }
}

/* ---------------------------------------------------------------
   Case file index (home — list of case studies)
   --------------------------------------------------------------- */
.index-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  margin-bottom: 1.5rem;
}
.index-heading h2 { font-size: 1.1rem; }

.case-list { border-top: 1px solid var(--ink); }
.case-row {
  display: grid;
  grid-template-columns: 70px 1fr auto;
  gap: 2rem;
  align-items: center;
  padding: 2rem 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: var(--ink);
  position: relative;
  transition: background 0.25s;
}
.case-row:hover { background: var(--paper-card); }
.case-row:hover .case-row__title { color: var(--indigo); }
.case-row:hover .case-row__arrow { transform: translateX(4px); }

.case-row__num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ochre);
}
.case-row__body { min-width: 0; }
.case-row__title {
  display: block;
  font-size: clamp(1.3rem, 2.4vw, 1.9rem);
  margin-bottom: 0.5rem;
  transition: color 0.2s;
}
.case-row__desc {
  display: block;
  color: var(--ink-soft);
  font-size: 0.98rem;
  margin-bottom: 0.7rem;
  max-width: 560px;
}
.case-row__arrow {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  color: var(--ink-faint);
  transition: transform 0.2s;
  justify-self: end;
}

@media (max-width: 720px) {
  .case-row { grid-template-columns: 40px 1fr; padding: 1.5rem 0; }
  .case-row__arrow { display: none; }
}

/* ---------------------------------------------------------------
   Other work / footer
   --------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--ink);
  padding: 3rem 0 2.5rem;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}
.footer__block strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.8rem;
}
.footer__links { display: flex; flex-direction: column; gap: 0.5rem; }
.footer__block--right { padding-left: 4rem; }
.footer__links a {
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--ink-soft);
  border-bottom: 1px solid transparent;
}
.footer__links a:hover { color: var(--indigo); border-color: var(--indigo); }
.footer__bottom {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-faint);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}
@media (max-width: 600px) {
  .footer__grid { grid-template-columns: 1fr; gap: 2rem; }
}

/* =================================================================
   CASE STUDY PAGE
   ================================================================= */
.case-hero { padding: 3rem 0 0; }
.case-hero__meta-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.case-hero__title {
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  max-width: 880px;
  margin-bottom: 1.2rem;
}
.case-hero__dek {
  font-size: 1.2rem;
  color: var(--ink-soft);
  max-width: 680px;
  margin-bottom: 2.2rem;
}

.case-layout {
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 3.5rem;
  padding-top: 2.5rem;
  align-items: start;
}
.case-sidebar {
  position: sticky;
  top: 5.5rem;
}
.meta-stamp {
  border: 1px solid var(--ink);
  padding: 1.2rem 1.1rem;
  font-family: var(--font-mono);
}
.meta-stamp__row { margin-bottom: 1.1rem; }
.meta-stamp__row:last-child { margin-bottom: 0; }
.meta-stamp__label {
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.4rem;
}
.meta-stamp__value {
  font-size: 0.8rem;
  color: var(--ink);
  line-height: 1.5;
}
.meta-stamp .tags { margin-top: 0.2rem; }

.case-content { max-width: var(--col-text); }
.case-content h2 {
  font-size: 1.7rem;
  margin: 3rem 0 1.2rem;
}
.case-content h2:first-child { margin-top: 0; }
.case-content h3 {
  font-family: var(--font-body);
  font-weight: 700;
  font-style: italic;
  font-size: 1.18rem;
  margin: 2.2rem 0 0.8rem;
  color: var(--indigo-deep);
}
.case-content p { color: var(--ink-soft); }
.case-content > p:first-of-type { font-size: 1.18rem; color: var(--ink); }
.case-content ul { color: var(--ink-soft); }
.case-content strong { color: var(--ink); }

.section-rule {
  margin: 3rem 0 0;
}

figure.fig {
  margin: 2.2rem 0 2.6rem;
}
figure.fig img {
  border: 1px solid var(--line);
  background: #fff;
}
figure.fig figcaption {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-faint);
  margin-top: 0.7rem;
  line-height: 1.5;
}
figure.fig figcaption .fig-num { color: var(--ochre); margin-right: 0.4em; }

.fig-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
@media (max-width: 720px) {
  .fig-pair { grid-template-columns: 1fr; }
}

blockquote.pull {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.5rem;
  line-height: 1.45;
  color: var(--indigo-deep);
  margin: 2.4rem 0;
  padding-left: 1.5rem;
  border-left: 3px solid var(--ochre);
}
blockquote.pull cite {
  display: block;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 0.8rem;
}

.callout {
  background: var(--paper-card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--indigo);
  padding: 1.4rem 1.6rem;
  margin: 2.2rem 0;
}
.callout p:last-child { margin-bottom: 0; }
.callout .eyebrow { display: block; margin-bottom: 0.5rem; }

.outcome-banner {
  background: var(--ink);
  color: var(--paper);
  padding: 2.6rem 2.4rem;
  margin: 3rem 0 1rem;
}
.outcome-banner .eyebrow { color: var(--ochre-soft); }
.outcome-banner h2 { color: var(--paper); margin-top: 0.6rem; }
.outcome-banner p { color: var(--mist); margin-top: 1rem; margin-bottom: 0; }
.outcome-banner strong { color: var(--paper); }

.case-pagenav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--ink);
  margin-top: 4rem;
  padding-top: 2rem;
  padding-bottom: 4rem;
}
.case-pagenav a {
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--ink);
}
.case-pagenav a:hover { color: var(--indigo); }
.case-pagenav .eyebrow { margin-bottom: 0.4rem; }
.case-pagenav__next { text-align: right; }

@media (max-width: 900px) {
  .case-layout { grid-template-columns: 1fr; }
  .case-sidebar { position: static; margin-bottom: 1rem; }
  .meta-stamp { display: flex; flex-wrap: wrap; gap: 1.5rem; }
  .meta-stamp__row { margin-bottom: 0; flex: 1 1 140px; }
}