/* ============================================
   Sindy Lim — Portfolio
   Editorial, restrained, typography-led
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,300;9..144,400;9..144,500;9..144,600&family=Inter:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --bg: #ffffff;
  --ink: #16181c;
  --muted: #74777f;
  --faint: #a8abb2;
  --border: #e4e4e7;
  --accent: #35506b;
  --surface: #f7f7f5;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --content-width: 720px;
  --content-width-wide: 1440px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

/* ---------- Layout ---------- */

.wrap {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
}

.wrap--wide {
  max-width: 1900px;
  padding: 0 48px;
}

/* ---------- Nav ---------- */

.site-nav {
  padding: 40px 0 0;
}

.site-nav .wrap {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.site-nav__name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.site-nav__links {
  display: flex;
  gap: 28px;
  font-size: 13px;
  color: var(--muted);
}

.site-nav__links a {
  transition: color 0.15s ease;
}

.site-nav__links a:hover {
  color: var(--ink);
}

/* ---------- Eyebrow / labels ---------- */

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.divider {
  color: var(--faint);
  margin: 0 8px;
}

/* ---------- Work section: rows + bio panel ---------- */

.work-section {
  padding: 32px 0 140px;
}

.work-section .wrap--wide {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 64px;
  align-items: start;
}

.work-list {
  min-width: 0;
}

.work-row {
  display: grid;
  grid-template-columns: 340px 1fr 70px 170px;
  gap: 24px;
  align-items: center;
  padding: 36px 0;
  border-bottom: 1px solid var(--border);
}

.work-list .work-row:first-child {
  padding-top: 0;
}

.work-row__thumb {
  aspect-ratio: 4 / 3;
  background: #111;
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 5%;
  overflow: hidden;
}

.work-row__thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.5s ease;
}

.work-row:hover .work-row__thumb img {
  transform: scale(1.03);
}

.work-row__title {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: -0.005em;
  margin: 0 0 10px;
  transition: color 0.2s ease;
}

.work-row:hover .work-row__title {
  color: var(--accent);
}

.work-row__link {
  display: inline-block;
  font-size: 13px;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: 1px;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.work-row:hover .work-row__link {
  color: var(--ink);
  border-color: var(--ink);
}

.work-row__year {
  font-size: 15px;
  color: var(--ink);
}

.work-row__tags {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.5;
}

/* Bio panel */

.work-bio {
  position: sticky;
  top: 32px;
}

.work-bio p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
  margin: 0 0 22px;
}

.work-bio a {
  text-decoration: underline;
  text-decoration-color: var(--border);
  text-underline-offset: 2px;
  transition: text-decoration-color 0.15s ease;
}

.work-bio a:hover {
  text-decoration-color: var(--ink);
}

.work-bio__links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 14px;
}

/* ============================================
   Case study pages
   ============================================ */

.cs-layout {
  padding-top: 100px;
}

.cs-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 40px;
  transition: color 0.15s ease, gap 0.15s ease;
}

.cs-back:hover {
  color: var(--ink);
}

.cs-eyebrow {
  margin-bottom: 18px;
}

.cs-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 34px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0 0 40px;
}

.cs-meta {
  display: grid;
  grid-template-columns: 130px 1fr;
  row-gap: 10px;
  font-size: 14.5px;
  padding: 28px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 56px;
}

.cs-meta dt {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  padding-top: 2px;
}

.cs-meta dd {
  margin: 0;
}

/* Narrative blocks: Context / Challenge / Solution */

.cs-narrative {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-bottom: 64px;
}

.cs-narrative__block--full {
  grid-column: 1 / -1;
}

.cs-narrative h3 {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  font-weight: 500;
  margin: 0 0 12px;
}

.cs-narrative p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.7;
}

.cs-hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0 0 64px;
}

/* Highlights */

.cs-highlight {
  margin-bottom: 72px;
}

.cs-highlight__label {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 14px;
}

.cs-highlight__symbol {
  color: var(--faint);
  font-size: 13px;
}

.cs-highlight__name {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.cs-highlight__desc {
  font-size: 15.5px;
  line-height: 1.7;
  margin: 0 0 28px;
}

/* Full-bleed black image bands (fills the main content column) */

.cs-band {
  background: #111;
  width: 100%;
  padding: 32px;
  margin: 0 0 20px;
}

.cs-band--fit {
  width: fit-content;
  max-width: 100%;
}

.cs-band__inner {
  max-width: 1400px;
  margin: 0;
}

.cs-band img {
  display: block;
  width: 100%;
  cursor: zoom-in;
}

.cs-band img.cs-band__img--compact {
  width: auto;
  max-width: 200px;
}

.lightbox {
  position: fixed;
  inset: 0;
  background: #0a0a0a;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 56px;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  cursor: zoom-out;
}

.lightbox.is-open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  cursor: default;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
}

.lightbox__close {
  position: fixed;
  top: 24px;
  right: 32px;
  color: #fff;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  opacity: 0.7;
  cursor: pointer;
}

.lightbox__close:hover {
  opacity: 1;
}

.cs-band__pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.cs-band__pair--stacked {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.cs-band__col {
  display: flex;
  flex-direction: column;
}

.cs-band__tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #8a8d94;
  margin: 0 0 14px;
}

.cs-band__tag--after {
  color: #9db8d4;
}

.cs-band__stack {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.cs-visual-caption {
  font-size: 13px;
  color: var(--muted);
  margin: 0 0 40px;
  line-height: 1.5;
}

/* Two-column layout with sticky bio, shared pattern for case study pages */

.wrap--xwide {
  max-width: 1280px;
  padding: 0 24px;
}

.cs-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 96px;
  align-items: start;
}

.cs-main {
  min-width: 0;
}

/* Scroll reveal (progressive enhancement; visible by default without JS) */

.reveal {
  opacity: 1;
  transform: none;
}

html.js .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

html.js .reveal.is-in {
  opacity: 1;
  transform: none;
}

/* Outcome */

.cs-outcome {
  background: var(--surface);
  border-radius: 4px;
  padding: 40px;
  margin-bottom: 96px;
}

.cs-outcome h3 {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  font-weight: 500;
  margin: 0 0 16px;
}

.cs-outcome p {
  font-size: 15.5px;
  line-height: 1.7;
  margin: 0 0 20px;
}

.cs-outcome p:last-child {
  margin-bottom: 0;
}

.cs-quote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 18px;
  line-height: 1.55;
  color: var(--ink);
  border-left: 2px solid var(--accent);
  padding-left: 20px;
  margin: 24px 0;
}

/* Project nav (bottom of case study) */

/* Bottom nav: Home / Next */

.cs-footer-nav {
  display: flex;
  gap: 28px;
  padding: 48px 0 100px;
}

.cs-footer-nav a {
  font-size: 15px;
  text-decoration: underline;
  text-decoration-color: var(--border);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.15s ease, color 0.15s ease;
}

.cs-footer-nav a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .work-section .wrap--wide,
  .cs-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .work-bio {
    position: static;
    order: -1;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border);
  }
}

@media (max-width: 640px) {
  .cs-title { font-size: 28px; }
  .cs-narrative { grid-template-columns: 1fr; gap: 32px; }
  .cs-band__pair { grid-template-columns: 1fr; gap: 28px; }
  .cs-band { padding: 36px 20px; }
  .cs-meta { grid-template-columns: 100px 1fr; }
  .site-nav__links { gap: 16px; }
  .cs-outcome { padding: 28px 24px; }

  .work-row {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 28px 0;
  }
  .work-row__thumb {
    aspect-ratio: 4 / 3;
  }
  .work-row__tags {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 10px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Focus visibility */
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}