/* 디자인 토큰 */
:root {
  --ink: #101114;
  --ink-soft: #6b7280;
  --line: #e5e7eb;
  --bg: #fbfbfc;
  --surface: #ffffff;
  --accent: #d9524a;
  --radius: 12px;
  --font: system-ui, -apple-system, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --wrap: 74rem;
  color-scheme: light;
}

* { box-sizing: border-box; }

body {
  margin: 0; font-family: var(--font); color: var(--ink); background: var(--bg);
  line-height: 1.6; -webkit-font-smoothing: antialiased;
}

.wrap { width: min(100% - 2.5rem, var(--wrap)); margin-inline: auto; }
a { color: inherit; }

/* 헤더 */
.site-header { padding: 2rem 0; }
.site-header .wrap { display: flex; align-items: baseline; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; }
.name { font-size: 1.15rem; font-weight: 700; letter-spacing: -.02em; text-decoration: none; }
.site-nav { display: flex; gap: 1.35rem; }
.site-nav a { text-decoration: none; color: var(--ink-soft); font-size: .95rem; }
.site-nav a:hover { color: var(--accent); }

/* 인트로 */
.intro { padding: clamp(2.5rem, 7vw, 5rem) 0 clamp(2rem, 5vw, 3.5rem); }
.intro h1 {
  font-size: clamp(2rem, 6vw, 3.6rem); line-height: 1.12; letter-spacing: -.035em;
  margin: 0 0 1.25rem; max-width: 22ch;
}
.intro h1 em { font-style: normal; color: var(--accent); }
.intro p { margin: 0; color: var(--ink-soft); font-size: 1.05rem; max-width: 46ch; }

/* 필터 */
.filters { display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: 1.75rem; }
.filter {
  border: 1px solid var(--line); background: var(--surface); color: var(--ink-soft);
  padding: .5rem 1rem; border-radius: 99px; font: inherit; font-size: .9rem;
  cursor: pointer; transition: all .15s ease;
}
.filter:hover { border-color: var(--ink-soft); color: var(--ink); }
.filter[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: #fff; }

/* 작업물 격자 */
.works { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; padding-bottom: 4rem; }
.work {
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  background: var(--surface); text-decoration: none; display: block;
  transition: transform .18s ease, box-shadow .18s ease;
}
.work:hover { transform: translateY(-3px); box-shadow: 0 20px 38px -24px rgba(16, 18, 27, .55); }
.work[hidden] { display: none; }

/* 썸네일 — 외부 이미지 없이 CSS 로만 그린다. --a/--b 를 카드마다 다르게 준다. */
.thumb {
  aspect-ratio: 4 / 3;
  background:
    radial-gradient(circle at 30% 25%, var(--a), transparent 58%),
    radial-gradient(circle at 72% 78%, var(--b), transparent 55%),
    #eceef2;
  position: relative;
}
.thumb::after {
  content: attr(data-year); position: absolute; right: .75rem; bottom: .7rem;
  font-size: .75rem; letter-spacing: .04em; color: #fff;
  background: rgba(16, 18, 27, .55); padding: .2rem .55rem; border-radius: 99px;
}
.work-body { padding: 1.1rem 1.2rem 1.35rem; }
.work-body h3 { margin: 0 0 .3rem; font-size: 1.02rem; letter-spacing: -.01em; }
.work-body span { color: var(--ink-soft); font-size: .875rem; }

.empty { color: var(--ink-soft); padding: 2rem 0 4rem; }
.empty[hidden] { display: none; }

/* 소개 */
.about { border-top: 1px solid var(--line); padding: clamp(3rem, 7vw, 5rem) 0; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); }
.about h2 { margin: 0 0 1rem; font-size: clamp(1.5rem, 3.4vw, 2rem); letter-spacing: -.025em; }
.about p { margin: 0 0 1rem; color: var(--ink-soft); }
.timeline { list-style: none; margin: 0; padding: 0; display: grid; gap: .9rem; }
.timeline li { display: grid; grid-template-columns: 4.5rem 1fr; gap: 1rem; align-items: baseline; }
.timeline time { color: var(--accent); font-size: .875rem; font-weight: 600; }
.timeline span { font-size: .95rem; }

/* 연락 */
.contact { border-top: 1px solid var(--line); padding: clamp(3rem, 7vw, 5rem) 0; }
.contact h2 { margin: 0 0 .75rem; font-size: clamp(1.5rem, 3.4vw, 2rem); letter-spacing: -.025em; }
.contact a.mail {
  font-size: clamp(1.2rem, 3.2vw, 1.8rem); text-decoration: none;
  border-bottom: 2px solid var(--accent); padding-bottom: .1rem;
}
.contact a.mail:hover { color: var(--accent); }
.socials { display: flex; gap: 1.25rem; margin-top: 1.75rem; }
.socials a { color: var(--ink-soft); text-decoration: none; font-size: .95rem; }
.socials a:hover { color: var(--ink); }

.site-footer { border-top: 1px solid var(--line); padding: 2rem 0; color: var(--ink-soft); font-size: .875rem; }

@media (max-width: 900px) { .works { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) {
  .works { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
}