/* Seoyoung Jin — portfolio site. Tokens first, then layout top-to-bottom. */
:root {
  --bg: #faf8f4;
  --ink: #1b1915;
  --accent: #7a2e2e;
  --rule: #d9d3c7;
  --muted: #6b655b;
  --ink-soft: #3d3931;
  --ink-soft-2: #3a362f;
  --mono-muted: #5c574e;
  --paper: #f1ede6;
  --selection: #e9d9d3;
  --serif: 'EB Garamond', Georgia, serif;
  --mono: 'Courier Prime', monospace;
  --section-gap: 120px;
}

html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
img { display: block; max-width: 100%; }
p { margin: 0; }
::selection { background: var(--selection); }

/* Page shell: 1400px max, two columns that wrap */
.page { max-width: 1400px; margin: 0 auto; padding: 0 clamp(20px, 4vw, 56px); }
.columns { display: flex; flex-wrap: wrap; gap: 40px clamp(40px, 5vw, 88px); align-items: flex-start; }

/* Sticky index (left column) */
.index { flex: 1 1 220px; max-width: 300px; position: sticky; top: 0; align-self: flex-start; padding: 44px 0; }
.eyebrow { font-family: var(--mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
.name { font-family: var(--serif); font-weight: 500; font-size: clamp(38px, 4vw, 52px); line-height: 1; letter-spacing: -.01em; margin: 18px 0 0; }
.bio { font-size: 18px; line-height: 1.45; margin-top: 16px; max-width: 26ch; color: var(--ink-soft); }
.toc { margin-top: 40px; display: flex; flex-direction: column; border-top: 1px solid var(--rule); }
.toc a { display: flex; gap: 16px; align-items: baseline; padding: 11px 0; border-bottom: 1px solid var(--rule); color: var(--ink); font-size: 17px; text-decoration: none; }
.toc a:hover { color: var(--accent); text-decoration: none; }
.toc-num { font-family: var(--mono); font-size: 12px; color: var(--accent); }
.index-email { display: inline-block; margin-top: 32px; font-family: var(--mono); font-size: 13px; color: var(--mono-muted); }

/* Main column */
.content { flex: 3 1 560px; min-width: 0; padding-top: 44px; }

/* Intro */
.intro { padding-bottom: var(--section-gap); }
.hello { font-size: clamp(26px, 2.6vw, 34px); line-height: 1.3; max-width: 30ch; text-wrap: pretty; }
.hello-sub { display: block; font-size: clamp(19px, 1.8vw, 24px); line-height: 1.45; margin-top: 10px; color: var(--ink-soft-2); }
.hero { margin-top: 40px; }

/* Figures, frames, captions */
.fig { margin: 0; }
.fig figcaption { font-family: var(--mono); font-size: 13px; line-height: 1.5; color: var(--muted); margin-top: 10px; }
.frame { position: relative; display: block; width: 100%; border: 1px solid var(--rule); overflow: hidden; }
.frame img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.cover { width: 100%; object-fit: cover; }
.fig-link, .fig-link:hover { color: inherit; text-decoration: none; }
.r16x9 { aspect-ratio: 16 / 9; }
.r3x2 { aspect-ratio: 3 / 2; }
.r2x1 { aspect-ratio: 2 / 1; }
.r3x4 { aspect-ratio: 3 / 4; }
.r4x3 { aspect-ratio: 4 / 3; }
.r2x3 { aspect-ratio: 2 / 3; }
.r6x7 { aspect-ratio: 6 / 7; }
.r5x4 { aspect-ratio: 5 / 4; }
.r7x10 { aspect-ratio: 7 / 10; }
.r1x1 { aspect-ratio: 1 / 1; }
.r4x5 { aspect-ratio: 4 / 5; }
/* Hand-set crops carried over from the prototype */
.pos-lunchbox { object-position: 50% 85%; }
.pos-bottles { object-position: 50% 49.5%; }
.pos-card { object-position: 0% 50%; }
.pos-cranes { object-position: center 38%; }
.pos-materials { object-position: 55% center; }
.pos-sunset { object-position: center 60%; }
.zoom img { inset: auto; left: 59.83%; top: 44.45%; width: 251.8%; height: 161.9%; max-width: none; transform: translate(-50%, -50%); object-fit: fill; }
.placeholder { background: var(--paper); }
.placeholder::after { content: attr(data-note); position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; padding: 16px; text-align: center; font-family: var(--mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }

/* Project rows */
.project, .elsewhere { border-top: 1px solid var(--ink); padding: 20px 0 var(--section-gap); }
.meta { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; font-family: var(--mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
.title { font-family: var(--serif); font-weight: 500; font-size: clamp(34px, 3.4vw, 46px); line-height: 1.06; letter-spacing: -.015em; margin: 28px 0 0; text-wrap: balance; }
.body { font-size: 18px; line-height: 1.6; margin-top: 22px; text-wrap: pretty; }
.lede { font-size: 18px; line-height: 1.6; margin-top: 12px; max-width: 58ch; text-wrap: pretty; }

/* 01 — vertical flow chart */
.flow { margin-top: 40px; display: flex; flex-direction: column; }
.step { display: flex; gap: 24px; align-items: stretch; }
.rail { flex: 0 0 56px; display: flex; flex-direction: column; align-items: center; }
.marker { flex: 0 0 auto; width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--accent); color: var(--accent); display: flex; align-items: center; justify-content: center; font-family: var(--mono); font-size: 13px; }
.line { flex: 1 1 auto; width: 1px; min-height: 40px; background: var(--rule); margin-top: 12px; }
.step-body { flex: 1 1 0; min-width: 0; padding: 10px 0 56px; }
.step:last-child .step-body { padding-bottom: 0; }
.step-title { font-family: var(--serif); font-weight: 500; font-size: clamp(24px, 2.2vw, 30px); line-height: 1.15; letter-spacing: -.01em; margin: 10px 0 0; text-wrap: balance; }
.photos-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 24px; margin-top: 24px; }
.research-fig { margin-top: 24px; max-width: 360px; }
.kakao-fig { margin-top: 24px; }
.kakao-fig img { aspect-ratio: 2 / 1; object-fit: contain; object-position: center; background: var(--paper); border: 1px solid var(--rule); }
.stats { display: flex; flex-wrap: wrap; gap: 20px 48px; margin-top: 20px; }
.stat-n { font-family: var(--serif); font-weight: 500; font-size: clamp(36px, 3.4vw, 48px); line-height: 1; }
.stat-l { font-family: var(--mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin-top: 8px; }
.relief-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-top: 24px; align-items: start; }
.poster { grid-row: span 2; }
.poster img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; object-position: top; border: 1px solid var(--rule); }

/* 02 / 03 / 04 — text beside a portrait photo */
.split { display: flex; flex-wrap: wrap; gap: 32px 48px; margin-top: 28px; align-items: flex-start; }
.split-text { flex: 1 1 300px; max-width: 46ch; }
.split-text .title { margin: 0; }
.split-fig { flex: 1.2 1 340px; min-width: 0; max-width: 480px; }
.split-fig.narrow { max-width: 440px; }

/* 02 — six-column craft grid */
.craft-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 24px; margin-top: 44px; }
.span3 { grid-column: span 3; }
.span2 { grid-column: span 2; }

/* 03 — two rows, widths proportional to each photo's aspect ratio */
.row { display: flex; gap: 24px; align-items: flex-start; }
.row-a { margin-top: 44px; }
.row-b { margin-top: 24px; }
.w133 { flex: 1.333 1 0; min-width: 0; }
.w067 { flex: .667 1 0; min-width: 0; }
.w086 { flex: .857 1 0; min-width: 0; }
.w125 { flex: 1.25 1 0; min-width: 0; }

/* 04 — three-up rows */
.photos-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr)); gap: 24px; margin-top: 24px; }
.photos-3.first { margin-top: 44px; }

/* Elsewhere */
.elsewhere-lede { font-size: clamp(22px, 2vw, 28px); line-height: 1.3; margin-top: 20px; max-width: 40ch; text-wrap: pretty; }
.else-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; margin-top: 32px; max-width: 920px; }

/* Footer */
.colophon { border-top: 1px solid var(--ink); padding: 40px 0 72px; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 16px 32px; }
.thanks { font-family: var(--serif); font-weight: 500; font-size: 28px; line-height: 1.1; }
.colophon-meta { font-family: var(--mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-top: 10px; }
.colophon-links { display: flex; flex-wrap: wrap; gap: 12px 32px; font-size: 18px; }

/* Small screens: index sits above the content instead of sticking */
@media (max-width: 860px) {
  .index { position: static; max-width: none; padding-bottom: 0; }
  .content { padding-top: 0; }
}
@media (max-width: 520px) {
  .craft-grid .span2 { grid-column: span 3; }
  .row { flex-wrap: wrap; }
  .row > * { flex: 1 1 100%; }
}