:root {
  --bg: #f7f4ee;
  --bg-alt: #efeae0;
  --fg: #111013;
  --fg-muted: #5a5653;
  --rule: #d8d1c2;
  --accent: #6b4f2a;
  --font-serif: 'Cormorant Garamond', 'Noto Serif KR', Georgia, serif;
  --font-sans: 'Inter', system-ui, -apple-system, 'Noto Sans KR', sans-serif;
  --max: 1120px;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;
  --space-7: 9rem;
}

[data-theme='dark'] {
  --bg: #111013;
  --bg-alt: #17161a;
  --fg: #eae6dd;
  --fg-muted: #8a857d;
  --rule: #2a282e;
  --accent: #c9a876;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --bg: #111013;
    --bg-alt: #17161a;
    --fg: #eae6dd;
    --fg-muted: #8a857d;
    --rule: #2a282e;
    --accent: #c9a876;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--fg); color: var(--bg); padding: 0.5rem 1rem;
}
.skip-link:focus { left: 1rem; top: 1rem; z-index: 100; }

/* ---------------- Header ---------------- */
.header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.header--scrolled { border-bottom-color: var(--rule); }
.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  display: flex; align-items: center; justify-content: space-between;
  gap: 2rem;
}
.brand {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.nav { display: flex; gap: 2rem; }
.nav-link {
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  color: var(--fg-muted);
  position: relative;
  padding-bottom: 0.25rem;
}
.nav-link--active { color: var(--fg); }
.nav-link--active::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0;
  height: 1px; background: var(--accent);
}
.header-end { display: flex; align-items: center; gap: 0.75rem; }
.btn-lang {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--fg-muted);
  border: 1px solid var(--rule);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  transition: all 0.15s ease;
}
.btn-lang:hover { color: var(--fg); border-color: var(--fg-muted); }

/* ---------------- Layout ---------------- */
.container { max-width: var(--max); margin: 0 auto; padding: 0 1.5rem; }
.section { padding: var(--space-6) 0; }
.section--hero { padding: var(--space-7) 0 var(--space-6); }
.section--alt { background: var(--bg-alt); }

.eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin: 0 0 1.5rem;
}

h1, h2, h3 { font-family: var(--font-serif); font-weight: 500; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.75rem, 6vw, 4.5rem); line-height: 1.05; margin: 0 0 1.5rem; }
h2 { font-size: clamp(2rem, 4vw, 2.75rem); line-height: 1.15; margin: 0 0 1.25rem; }
h3 { font-size: 1.5rem; line-height: 1.3; margin: 0 0 0.75rem; }
p { margin: 0 0 1.25rem; max-width: 60ch; }
.lead { font-size: 1.25rem; color: var(--fg-muted); line-height: 1.55; max-width: 52ch; }

hr.rule { border: none; border-top: 1px solid var(--rule); margin: var(--space-5) 0; }

/* ---------------- Hero ---------------- */
.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
.hero-heading {
  font-size: clamp(3rem, 8vw, 6rem);
  line-height: 1.0;
  font-weight: 400;
  margin: 0;
}
.hero-heading em { font-style: italic; color: var(--accent); }
.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 40ch;
  margin-top: 2rem;
}
.hero-meta {
  display: flex; gap: 2.5rem; flex-wrap: wrap;
  margin-top: var(--space-4);
  padding-top: 2rem;
  border-top: 1px solid var(--rule);
  font-size: 0.85rem;
  color: var(--fg-muted);
}
.hero-meta-item { display: flex; flex-direction: column; gap: 0.25rem; }
.hero-meta-label { letter-spacing: 0.15em; text-transform: uppercase; font-size: 0.7rem; }
.hero-meta-value { color: var(--fg); font-family: var(--font-serif); font-size: 1.15rem; }

/* ---------------- Prose blocks ---------------- */
.prose-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-4);
  align-items: start;
}
.prose-grid .eyebrow { margin: 0; padding-top: 0.4rem; }
.prose-grid p:last-child { margin-bottom: 0; }
@media (max-width: 720px) {
  .prose-grid { grid-template-columns: 1fr; gap: 0.5rem; }
}

/* ---------------- Portfolio cards ---------------- */
.portfolio-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: var(--space-4);
}
.portfolio-item {
  display: grid;
  grid-template-columns: 180px 1fr auto;
  gap: 2rem;
  align-items: baseline;
  padding: 2rem 0;
  border-bottom: 1px solid var(--rule);
}
.portfolio-item:first-child { border-top: 1px solid var(--rule); }
.portfolio-year {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--fg-muted);
}
.portfolio-main h3 {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
}
.portfolio-desc { color: var(--fg-muted); margin: 0; }
.portfolio-tag {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
}
@media (max-width: 720px) {
  .portfolio-item {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
  .portfolio-year { font-size: 1rem; }
  .portfolio-tag { order: -1; }
}

/* ---------------- Contact ---------------- */
.contact-block {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-4);
  align-items: start;
}
.contact-link {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  display: inline-block;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0.25rem;
  transition: border-color 0.2s ease;
}
.contact-link:hover { border-color: var(--accent); }
@media (max-width: 720px) {
  .contact-block { grid-template-columns: 1fr; gap: 0.5rem; }
}

/* ---------------- Footer ---------------- */
.footer {
  border-top: 1px solid var(--rule);
  padding: 2.5rem 0;
  margin-top: var(--space-6);
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--fg-muted);
}
.footer-mark {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--fg);
}

@media (max-width: 640px) {
  .nav { display: none; }
  .header-inner { padding: 1rem; }
  .section { padding: var(--space-5) 0; }
  .section--hero { padding: var(--space-5) 0 var(--space-4); }
}