/* ART WINDOW 메인 랜딩 시안 — base.css (공유 토큰 + 컴포넌트)
   디자인 시스템: art-window-client/DESIGN.md 고정 계승 */

/* ── 토큰 ───────────────────────────────────────────── */
:root {
  --bg: #ffffff;
  --fg: #020618;
  --primary: #166048;
  --primary-fg: #eaf7f1;
  --muted: #f1f5f9;
  --muted-fg: #62748e;
  --border: #e2e8f0;
  --line: #eef1f4;

  --ff-display: "Playfair Display", Georgia, serif;
  --ff-body: "Noto Sans KR", -apple-system, sans-serif;

  --maxw: 1024px;
  --pad: 16px;
  --header-h: 56px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}
@media (min-width: 768px)  { :root { --pad: 40px; } }
@media (min-width: 1100px) { :root { --pad: 160px; } }

/* ── reset ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--ff-body);
  font-weight: 400;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }

/* ── 레이아웃 유틸 ──────────────────────────────────── */
.wrap {
  max-width: calc(var(--maxw) + var(--pad) * 2);
  margin: 0 auto;
  padding-inline: var(--pad);
}
.section { padding-block: 80px; border-bottom: 1px solid var(--line); }
.section-head { display: flex; flex-direction: column; align-items: center; gap: 12px; text-align: center; }

/* ── 타이포 ────────────────────────────────────────── */
.eyebrow {
  font-family: var(--ff-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--primary);
}
.display {
  font-family: var(--ff-display);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.01em;
}
.kr-head {
  font-family: var(--ff-body);
  line-height: 1.32;
  letter-spacing: -0.01em;
}
.kr-head .light { font-weight: 300; display: block; }
.kr-head .bold  { font-weight: 700; display: block; }
.lead { color: var(--muted-fg); font-size: 17px; line-height: 1.7; }

/* ── 버튼 ──────────────────────────────────────────── */
.btn-xl {
  display: inline-flex; align-items: center; justify-content: center;
  height: 52px; padding-inline: 34px;
  border-radius: 9999px;
  background: var(--primary); color: var(--primary-fg);
  font-size: 17px; font-weight: 500;
  transition: background .25s var(--ease), transform .25s var(--ease);
}
.btn-xl:hover { background: #124e3a; }
.btn-outline {
  display: inline-flex; align-items: center; justify-content: center;
  height: 48px; padding-inline: 26px;
  border-radius: 9999px;
  background: var(--bg); color: var(--fg);
  border: 1px solid var(--border);
  font-size: 15px; font-weight: 500;
  transition: border-color .25s var(--ease), background .25s var(--ease);
}
.btn-outline:hover { border-color: var(--primary); background: #fbfdfc; }
.cta-sub { font-size: 13px; color: var(--muted-fg); margin-top: 14px; }

/* ── 액자 (작품 = 매트 + 얇은 프레임) ──────────────── */
.framed {
  background: #fff;
  padding: 7%;
  border: 1px solid #dfe3e6;
  box-shadow: 0 2px 8px rgba(0,0,0,.05);
}
.framed img { width: 100%; aspect-ratio: 1/1; object-fit: cover; }

/* ── 헤더 ──────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header .wrap {
  height: 100%;
  display: flex; align-items: center; justify-content: space-between;
}
.wordmark {
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.01em;
}
.nav { display: flex; align-items: center; gap: 26px; }
.nav a { font-size: 14px; color: var(--muted-fg); transition: color .2s var(--ease); }
.nav a:hover { color: var(--fg); }
.nav .nav-cta { color: var(--primary); font-weight: 500; }
@media (max-width: 640px) {
  .nav a:not(.nav-cta) { display: none; }
}

/* ── 푸터 ──────────────────────────────────────────── */
.site-footer {
  padding-block: 56px;
  background: var(--muted);
  text-align: center;
}
.site-footer .wordmark { font-size: 17px; }
.site-footer p { margin-top: 14px; font-size: 13px; color: var(--muted-fg); }
.site-footer .links { margin-top: 18px; display: flex; gap: 18px; justify-content: center; }
.site-footer .links a { font-size: 12px; color: var(--muted-fg); }
.site-footer .links a:hover { color: var(--fg); }

/* ── reveal (페이지 로드 staggered, 1회) ───────────── */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}