/* =============================================================
   ARCHI STUDIO — 모던/미니멀 반응형 스타일
   ============================================================= */
:root {
  --fg: #141414;
  --fg-soft: #6b6b6b;
  --line: #e6e6e6;
  --bg: #ffffff;
  --bg-soft: #f6f6f4;
  --max: 1200px;
  --header-h: 72px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Helvetica Neue",
    "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ── 화면 전환 / 로딩 흔들림 방지 ───────────────── */
/* 헤더가 JS로 주입되기 전에 높이를 미리 확보해 레이아웃 점프 방지 */
[data-site-header] { display: block; height: var(--header-h); }

/* 페이지 조립(헤더 주입 등)이 끝나면 .is-ready 가 붙어 한 번에 부드럽게 등장.
   조립 과정이 페이드 뒤에 가려져 잔상/흔들림이 보이지 않는다. */
body { opacity: 0; }
body.is-ready { opacity: 1; transition: opacity .4s ease; }

/* 모션 최소화를 선호하는 사용자는 페이드 없이 즉시 표시 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  body { opacity: 1; transition: none; }
}

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ── 헤더 ─────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  max-width: var(--max); margin: 0 auto; padding: 0 24px;
  height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 19px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase;
}
.brand__logo {
  height: 32px; width: auto; display: block; border-radius: 4px;
}
.nav { display: flex; gap: 34px; }
.nav a {
  font-size: 15px; color: var(--fg-soft); position: relative; padding: 4px 0;
  transition: color .2s;
}
.nav a:hover { color: var(--fg); }
.nav a.is-active { color: var(--fg); font-weight: 600; }
.nav a.is-active::after {
  content: ""; position: absolute; left: 0; bottom: -2px; width: 100%; height: 2px;
  background: var(--fg);
}

.nav-toggle {
  display: none; flex-direction: column; gap: 5px; width: 30px; height: 30px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-toggle span { display: block; height: 2px; background: var(--fg); transition: .25s; }

/* ── 푸터 ─────────────────────────────────────────── */
.site-footer { border-top: 1px solid var(--line); margin-top: 100px; background: var(--bg-soft); }
.site-footer__inner {
  max-width: var(--max); margin: 0 auto; padding: 48px 24px;
  display: flex; flex-direction: column; gap: 14px;
}
.footer-brand { font-weight: 700; letter-spacing: 2px; text-transform: uppercase; }
.footer-info { display: flex; flex-wrap: wrap; gap: 8px 24px; color: var(--fg-soft); font-size: 14px; }
.footer-copy { color: #a3a3a3; font-size: 13px; }

/* ── 공통 섹션/타이틀 ──────────────────────────────── */
.section { padding: 80px 0; }
.page-head { padding: 80px 0 40px; }
.page-head .eyebrow { color: var(--fg-soft); letter-spacing: 3px; text-transform: uppercase; font-size: 13px; }
.page-head h1 { font-size: clamp(28px, 5vw, 44px); font-weight: 600; margin-top: 10px; letter-spacing: -.5px; }
.page-head .lead { color: var(--fg-soft); margin-top: 14px; max-width: 640px; }

/* ── 홈 히어로 ─────────────────────────────────────── */
.hero {
  padding: clamp(70px, 12vw, 130px) 0 60px;
  text-align: center;
}
.hero .hero-name { color: var(--fg-soft); letter-spacing: 3px; text-transform: uppercase; font-size: 14px; margin-bottom: 18px; }
.hero h1 { font-size: clamp(30px, 6vw, 60px); font-weight: 600; letter-spacing: -1px; line-height: 1.15; }
.hero p { color: var(--fg-soft); margin-top: 18px; font-size: clamp(15px, 2.2vw, 19px); }

/* ── 캐로셀 ───────────────────────────────────────── */
.carousel {
  position: relative; overflow: hidden; background: var(--bg-soft);
  border-radius: 4px;
}
.carousel__track {
  display: flex; transition: transform .6s cubic-bezier(.4, 0, .2, 1);
  cursor: grab; touch-action: pan-y; /* 세로 스크롤은 브라우저, 가로 드래그는 캐로셀 */
}
.carousel.is-dragging .carousel__track { cursor: grabbing; }
.carousel__slide {
  position: relative; min-width: 100%; aspect-ratio: 16 / 9; overflow: hidden;
  background: #ddd;
}
.carousel__slide img {
  width: 100%; height: 100%; object-fit: cover;
  -webkit-user-drag: none; user-select: none; /* 드래그 시 이미지 고스트 방지 */
}
.carousel__caption {
  position: absolute; left: 0; bottom: 0; width: 100%;
  padding: 40px 32px 28px; color: #fff;
  background: linear-gradient(transparent, rgba(0, 0, 0, .65));
}
.carousel__caption h3 { font-size: clamp(18px, 3vw, 26px); font-weight: 600; }
.carousel__caption p { font-size: 14px; opacity: .9; margin-top: 4px; }
.carousel__btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 46px; height: 46px; border-radius: 50%; border: none; cursor: pointer;
  background: rgba(255, 255, 255, .85); color: #111; font-size: 24px; line-height: 1;
  display: flex; align-items: center; justify-content: center; transition: background .2s;
}
.carousel__btn:hover { background: #fff; }
.carousel__btn--prev { left: 16px; }
.carousel__btn--next { right: 16px; }
.carousel__dots {
  position: absolute; bottom: 14px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 8px;
}
.carousel__dots .dot {
  width: 8px; height: 8px; border-radius: 50%; border: none; cursor: pointer;
  background: rgba(255, 255, 255, .5);
}
.carousel__dots .dot.is-active { background: #fff; width: 22px; border-radius: 4px; }
.carousel-empty { padding: 80px; text-align: center; color: var(--fg-soft); }

.home-cta { text-align: center; margin-top: 44px; }
.btn {
  display: inline-block; padding: 13px 30px; border: 1px solid var(--fg);
  border-radius: 40px; font-size: 15px; transition: .2s;
}
.btn:hover { background: var(--fg); color: #fff; }

/* ── 포트폴리오 그리드 ─────────────────────────────── */
/* ── 카테고리 필터 (리스트 위 가운데) ─────────────── */
.cat-filter {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 10px;
  margin: 0 0 40px;
}
.cat-filter button {
  font-size: 14px; color: var(--fg-soft); cursor: pointer;
  background: none; border: 1px solid var(--line); border-radius: 4px;
  padding: 8px 18px; transition: all .2s;
}
.cat-filter button:hover { border-color: var(--fg); color: var(--fg); }
.cat-filter button.is-active {
  background: var(--fg); color: #fff; border-color: var(--fg);
}

.grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 28px;
}
.card { display: block; }
.card__thumb {
  position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--bg-soft); border-radius: 3px;
}
.card__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.card:hover .card__thumb img { transform: scale(1.04); }
.card__body { padding: 16px 2px; }
.card__body h3 { font-size: 18px; font-weight: 600; }
.card__body p { color: var(--fg-soft); font-size: 14px; margin-top: 4px; }
.card__cat {
  display: inline-block; font-size: 12px; color: var(--fg-soft);
  border: 1px solid var(--line); padding: 2px 10px; border-radius: 20px; margin-top: 8px;
}

/* ── 프로젝트 상세 ────────────────────────────────── */
.project-head { max-width: 760px; margin: 0 auto; text-align: center; padding: 70px 0 30px; }
.project-head .eyebrow { color: var(--fg-soft); letter-spacing: 3px; text-transform: uppercase; font-size: 13px; }
.project-head h1 { font-size: clamp(26px, 4.5vw, 40px); font-weight: 600; margin-top: 12px; }
.project-head .meta { color: var(--fg-soft); margin-top: 12px; font-size: 15px; }
.project-desc { max-width: 680px; margin: 26px auto 0; color: #333; text-align: left; }
.project-desc p { margin: 0 0 14px; }
.project-images { max-width: 980px; margin: 50px auto 0; display: flex; flex-direction: column; gap: 24px; }
.project-images img { width: 100%; border-radius: 3px; }
.back-link { display: inline-block; margin-top: 60px; color: var(--fg-soft); }
.back-link:hover { color: var(--fg); }

/* ── 마크다운 본문(소개/오시는 길) ─────────────────── */
.prose { max-width: 760px; }
.prose h2 { font-size: 24px; font-weight: 600; margin: 36px 0 14px; }
.prose h3 { font-size: 19px; font-weight: 600; margin: 28px 0 10px; }
.prose p { margin: 0 0 16px; color: #333; }
.prose ul, .prose ol { margin: 0 0 16px 20px; color: #333; }
.prose li { margin: 6px 0; }
.prose strong { font-weight: 600; }
.prose img { border-radius: 3px; margin: 20px 0; }
.prose a { text-decoration: underline; }

/* ── 오시는 길 ────────────────────────────────────── */
.map-wrap { width: 100%; height: 440px; border-radius: 4px; overflow: hidden; background: var(--bg-soft); border: 1px solid var(--line); }
#map { width: 100%; height: 100%; }
.map-fallback { display: flex; align-items: center; justify-content: center; height: 100%; color: var(--fg-soft); text-align: center; padding: 20px; }
.info-table { margin-top: 36px; border-top: 1px solid var(--line); }
.info-table .row { display: flex; gap: 20px; padding: 16px 4px; border-bottom: 1px solid var(--line); }
.info-table .row .k { width: 110px; flex-shrink: 0; color: var(--fg-soft); font-size: 14px; }
.info-table .row .v { color: var(--fg); }

/* ── 반응형 ───────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav {
    position: fixed; top: var(--header-h); right: 0; left: 0;
    flex-direction: column; gap: 0; background: #fff; border-bottom: 1px solid var(--line);
    transform: translateY(-130%); transition: transform .3s ease; padding: 8px 0;
  }
  .site-header.nav-open .nav { transform: translateY(0); box-shadow: 0 12px 24px rgba(0, 0, 0, .06); }
  .nav a { padding: 14px 24px; font-size: 16px; }
  .nav a.is-active::after { display: none; }
  .site-header.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .site-header.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
  .site-header.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .grid { grid-template-columns: 1fr; gap: 22px; }
  .carousel__slide { aspect-ratio: 4 / 3; }
  .carousel__btn { width: 38px; height: 38px; font-size: 20px; }
  .map-wrap { height: 340px; }
  .section { padding: 56px 0; }
}