:root{
  --bg: #FBFAF6;
  --ink: #17181A;
  --muted: #8B8A83;
  --line: #E3E1D9;
  --accent: #2A3B55; /* 잉크블루 */
}

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

body{
  background:var(--bg);
  color:var(--ink);
  font-family:'IBM Plex Sans KR', sans-serif;
  font-weight:300;
  -webkit-font-smoothing:antialiased;
}

a{ color:inherit; text-decoration:none; }
::selection{ background:var(--accent); color:var(--bg); }

.serif{ font-family:'Noto Serif KR', serif; }

.wrap{ max-width:1040px; margin:0 auto; padding:0 40px; }

/* ---------- NAV ---------- */
header.nav{
  position:sticky;
  top:0;
  background:rgba(251,250,246,.92);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
  z-index:10;
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:22px 40px;
  max-width:1040px;
  margin:0 auto;
}
.logo{
  font-family:'Noto Serif KR', serif;
  font-size:16px;
  letter-spacing:.02em;
}
.nav-links{
  display:flex;
  gap:36px;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--muted);
}
.nav-links a{
  position:relative;
  padding-bottom:3px;
  transition:color .2s ease;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0; bottom:0;
  width:0%;
  height:1px;
  background:var(--ink);
  transition:width .25s ease;
}
.nav-links a:hover{ color:var(--ink); }
.nav-links a:hover::after{ width:100%; }
.nav-links a.current{ color:var(--ink); }
.nav-links a.current::after{ width:100%; background:var(--accent); }

/* ---------- INTRO / HERO (홈) ---------- */
.intro{
  padding:120px 0 80px;
  border-bottom:1px solid var(--line);
}
.intro-eyebrow{
  font-size:13px;
  letter-spacing:.14em;
  color:var(--accent);
  margin-bottom:20px;
  text-transform:uppercase;
}
.intro h1{
  font-size:clamp(30px, 4.6vw, 46px);
  font-weight:600;
  line-height:1.5;
  max-width:760px;
  letter-spacing:-.01em;
}
.intro-role{
  margin-top:24px;
  font-size:14px;
  color:var(--muted);
  letter-spacing:.04em;
}

.btn-row{
  display:flex;
  gap:12px;
  margin-top:44px;
  flex-wrap:wrap;
}
.btn{
  font-family:'IBM Plex Sans KR', sans-serif;
  font-size:13px;
  letter-spacing:.04em;
  padding:13px 26px;
  border:1px solid var(--ink);
  border-radius:2px;
  transition:all .2s ease;
}
.btn-solid{ background:var(--ink); color:var(--bg); }
.btn-solid:hover{ background:var(--accent); border-color:var(--accent); }
.btn-outline{ color:var(--ink); }
.btn-outline:hover{ background:var(--ink); color:var(--bg); }

.social-links{
  display:flex;
  gap:22px;
  margin-top:28px;
  font-size:13px;
}
.social-links a{
  color:var(--muted);
  display:flex;
  align-items:center;
  gap:6px;
  transition:color .2s ease;
}
.social-links a:hover{ color:var(--accent); }
.social-links svg{ width:15px; height:15px; stroke:currentColor; fill:none; }

/* ---------- PAGE HEADER (내부 페이지 상단) ---------- */
.page-header{
  padding:72px 0 40px;
  border-bottom:1px solid var(--line);
}
.page-header .eyebrow{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--muted);
  text-transform:uppercase;
  margin-bottom:14px;
}
.page-header h1{
  font-size:clamp(28px, 4vw, 40px);
  font-weight:600;
  letter-spacing:-.01em;
}

/* ---------- WORK GALLERY ---------- */
.section-label{
  padding:40px 0 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.section-label span{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--muted);
  text-transform:uppercase;
}

.filter-tabs{
  display:flex;
  gap:10px;
  margin-bottom:28px;
}
.filter-tab{
  font-family:'IBM Plex Sans KR', sans-serif;
  font-size:13px;
  letter-spacing:.02em;
  padding:7px 16px;
  border:1px solid var(--line);
  border-radius:999px;
  background:transparent;
  color:var(--muted);
  cursor:pointer;
  transition:all .2s ease;
}
.filter-tab:hover{ border-color:var(--accent); color:var(--accent); }
.filter-tab.active{
  background:var(--ink);
  border-color:var(--ink);
  color:var(--bg);
}

.gallery{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  grid-auto-rows:260px;
  grid-auto-flow:dense;
  gap:14px;
  padding-bottom:40px;
}
.gallery-item{
  position:relative;
  overflow:hidden;
  border-radius:2px;
  cursor:pointer;
  transition:opacity .3s ease;
}
.gallery-item.tall{
  grid-row:span 2;
}
.gallery-item.hidden{ display:none; }
.gallery-item img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  filter:grayscale(4%) contrast(1.02);
  transition:transform .6s cubic-bezier(.2,.7,.2,1);
}
.gallery-item:hover img{ transform:scale(1.045); }
.gallery-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(to top, rgba(23,24,26,.82) 0%, rgba(23,24,26,.15) 55%, transparent 75%);
  opacity:0;
  transition:opacity .3s ease;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  padding:18px;
}
.gallery-item:hover .gallery-overlay{ opacity:1; }
.gallery-cat{
  font-size:11px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:#D7C9A8;
  margin-bottom:5px;
}
.gallery-title{
  font-family:'Noto Serif KR', serif;
  font-size:17px;
  color:var(--bg);
}
.gallery-date{
  font-size:11px;
  color:rgba(251,250,246,.7);
  margin-top:5px;
  font-variant-numeric:tabular-nums;
}

@media (max-width:900px){
  .gallery{ grid-template-columns:repeat(2, 1fr); grid-auto-rows:220px; }
}
@media (max-width:560px){
  .gallery{ grid-template-columns:1fr; grid-auto-rows:280px; }
  .gallery-overlay{ opacity:1; background:linear-gradient(to top, rgba(23,24,26,.82) 0%, rgba(23,24,26,.05) 65%, transparent 80%); }
}

/* ---------- ABOUT ---------- */
.about-hero{
  width:100%;
  aspect-ratio:16/9;
  border-radius:2px;
  overflow:hidden;
  margin-top:8px;
}
.about-hero img{
  width:100%; height:100%; object-fit:cover;
  filter:grayscale(6%) contrast(1.02);
}

.about{
  padding:48px 0 80px;
  max-width:680px;
}
.about-label span{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--muted);
  text-transform:uppercase;
}
.about-body{
  font-family:'Noto Serif KR', serif;
  font-size:18px;
  line-height:1.9;
  color:var(--ink);
}
.about-body p + p{ margin-top:18px; }

.facts{
  margin-top:40px;
  border-top:1px solid var(--line);
  padding-top:28px;
  display:grid;
  grid-template-columns:repeat(2, 1fr);
  gap:20px;
}
.facts dt{
  font-size:11px;
  letter-spacing:.1em;
  color:var(--muted);
  text-transform:uppercase;
  margin-bottom:6px;
}
.facts dd{
  font-size:14px;
  color:var(--ink);
}

@media (max-width:700px){
  .about-hero{ aspect-ratio:4/3; }
}

/* ---------- CONTACT ---------- */
.contact{
  padding:56px 0 60px;
}
.contact .lead{
  font-family:'Noto Serif KR', serif;
  font-size:clamp(24px, 3.6vw, 32px);
  font-weight:600;
  max-width:600px;
  margin-bottom:40px;
}
.contact-list{
  display:flex;
  flex-wrap:wrap;
  gap:10px 0;
  font-size:14px;
  margin-bottom:48px;
}
.contact-list a{
  padding:0 16px;
  border-right:1px solid var(--line);
  color:var(--muted);
  transition:color .2s ease;
}
.contact-list a:first-child{ padding-left:0; }
.contact-list a:last-child{ border-right:none; }
.contact-list a:hover{ color:var(--accent); }

.contact-note{
  font-size:14px;
  color:var(--muted);
  max-width:520px;
  line-height:1.8;
  border-top:1px solid var(--line);
  padding-top:28px;
}

.back-top{
  display:inline-block;
  margin-top:56px;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--muted);
  text-transform:uppercase;
}
.back-top:hover{ color:var(--ink); }

footer{
  border-top:1px solid var(--line);
  padding:26px 40px;
  font-size:12px;
  color:var(--muted);
  display:flex;
  justify-content:space-between;
  max-width:1040px;
  margin:0 auto;
}

a:focus-visible, .filter-tab:focus-visible{ outline:2px solid var(--accent); outline-offset:2px; }

.lightbox{
  position:fixed;
  inset:0;
  background:rgba(15,14,12,.94);
  display:flex;
  align-items:center;
  justify-content:center;
  padding:40px;
  opacity:0;
  pointer-events:none;
  transition:opacity .3s ease;
  z-index:200;
  cursor:zoom-out;
}
.lightbox.active{
  opacity:1;
  pointer-events:auto;
}
.lightbox img{
  max-width:100%;
  max-height:100%;
  object-fit:contain;
  box-shadow:0 20px 60px rgba(0,0,0,.5);
  transform:scale(.96);
  transition:transform .3s ease;
}
.lightbox.active img{ transform:scale(1); }
.lightbox-caption{
  position:absolute;
  bottom:28px;
  left:0; right:0;
  text-align:center;
  color:rgba(251,250,246,.85);
  font-family:'Noto Serif KR', serif;
  font-size:14px;
  letter-spacing:.02em;
}

/* ============================================================
   반응형 (태블릿 / 모바일)
   ============================================================ */

@media (max-width:768px){
  .wrap{ padding:0 24px; }

  .nav-inner{ padding:16px 24px; }
  .nav-links{ gap:20px; font-size:12.5px; }

  .intro{ padding:64px 0 48px; }
  .btn-row{ margin-top:32px; }
  .btn{ flex:1 1 auto; text-align:center; padding:13px 18px; }
  .social-links{ gap:18px; margin-top:24px; }

  .page-header{ padding:44px 0 28px; }

  .section-label{ padding:28px 0 18px; flex-direction:column; align-items:flex-start; gap:4px; }

  .about{ padding:36px 0 56px; }

  .facts{ grid-template-columns:1fr; gap:16px; }

  .contact{ padding:36px 0 48px; }
  .contact-list{ flex-direction:column; gap:14px; margin-bottom:36px; }
  .contact-list a{ padding:0; border-right:none; }

  footer{
    padding:22px 24px;
    flex-direction:column;
    gap:6px;
    text-align:center;
  }
}

@media (max-width:480px){
  .nav-inner{ padding:14px 18px; }
  .logo{ font-size:15px; }
  .nav-links{ gap:14px; font-size:12px; }

  .wrap{ padding:0 18px; }

  .intro-eyebrow{ font-size:12px; }
  .intro-role{ font-size:13px; }

  .btn-row{ flex-direction:column; }
  .social-links{ flex-direction:column; gap:14px; }

  .filter-tabs{ flex-wrap:wrap; }

  .about-portrait{ max-width:160px; }
}

@media (prefers-reduced-motion: reduce){
  *{ transition-duration:.01ms !important; }
}