/* PATT STUDIO */

:root {
  --ink:      #111;
  --ink-mid:  #666;
  --ink-soft: #999;
  --line:     #e5e5e5;
  --gut:      clamp(20px, 4.5vw, 60px);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font-family: Pretendard, -apple-system, BlinkMacSystemFont, "Malgun Gothic",
               "맑은 고딕", "Apple SD Gothic Neo", sans-serif;
  font-size: 15px;
  line-height: 1.8;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
}

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

/* ── 상단 ─────────────────────────────── */

.head {
  position: absolute; top: 0; left: 0; right: 0; z-index: 60;
  display: flex; align-items: center; justify-content: space-between;
  padding: 30px var(--gut);
}

.head .mark { display: block; line-height: 0; }
.head .mark img { height: 30px; width: auto; }

/* 히어로 사진 위에 얹힐 때는 검은 로고를 흰색으로 뒤집는다 */
body:not(.on-white) .head .mark img { filter: invert(1); }

.nav { display: flex; gap: 30px; }

.nav a {
  font-size: 11.5px; letter-spacing: .13em; text-transform: uppercase;
  opacity: .82; transition: opacity .2s;
}
.nav a:hover, .nav a[aria-current="page"] { opacity: 1; }

/* 히어로 위에 얹힐 때는 흰 글씨, 그 외에는 검정 */
.head          { color: #fff; }
.on-white .head { color: var(--ink); position: relative; border-bottom: 1px solid var(--line); }

.burger { display: none; background: none; border: 0; padding: 6px; cursor: pointer; color: inherit; }
.burger span { display: block; width: 20px; height: 1px; background: currentColor; margin: 5px 0; }

/* ── 히어로 ───────────────────────────── */

.hero { position: relative; height: 100svh; min-height: 520px; background: #1a1a1a; overflow: hidden; }
.hero > img { width: 100%; height: 100%; object-fit: cover; }
/* 밝은 사진 위에서도 흰 글씨가 읽히도록 어둡게 깔아준다.
   왼쪽(헤드라인) · 위(메뉴) · 아래(설명글) 쪽을 각각 눌러준다. */
.hero::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(95deg, rgba(0,0,0,.58) 0%, rgba(0,0,0,.30) 36%, rgba(0,0,0,0) 66%),
    linear-gradient(180deg, rgba(0,0,0,.42) 0%, rgba(0,0,0,.04) 28%, rgba(0,0,0,.56) 100%);
}

.hero-in {
  position: absolute; inset: 0; z-index: 2; color: #fff;
  display: flex; flex-direction: column; justify-content: center;
  padding: 0 var(--gut);
  text-shadow: 0 1px 18px rgba(0, 0, 0, .35);
}

.hero-in h1 {
  margin: 0; font-size: clamp(23px, 3.1vw, 41px); font-weight: 700;
  line-height: 1.38; letter-spacing: -0.025em; max-width: 17em;
}

.hero-sub { margin: 16px 0 0; font-size: clamp(13px, 1.15vw, 15px); opacity: .88; font-weight: 300; }

.hero-note {
  position: absolute; right: var(--gut); bottom: clamp(52px, 8vh, 96px);
  text-align: right; max-width: 640px; font-size: clamp(11.5px, .93vw, 13.5px);
  line-height: 2; font-weight: 300; opacity: .9;
}

.hero-note .more {
  display: inline-block; margin-top: 18px; padding: 9px 20px;
  border: 1px solid rgba(255,255,255,.6); font-size: 12px; letter-spacing: .04em;
  transition: background .25s, color .25s;
}
.hero-note .more:hover { background: #fff; color: #111; }

/* ── 프로젝트 그리드 ──────────────────── */

.grid-wrap { padding: clamp(48px, 7vw, 104px) var(--gut) clamp(64px, 9vw, 128px); }

.grid { display: grid; gap: clamp(10px, 1.1vw, 18px); grid-template-columns: repeat(4, 1fr); }

/* 프로젝트 수가 적을 때 4열에 흩어져 허전해 보이지 않도록 크게 보여준다 */
.grid.n1 { grid-template-columns: 1fr; }
.grid.n2 { grid-template-columns: repeat(2, 1fr); }
.grid.n3 { grid-template-columns: repeat(3, 1fr); }
.grid.n1 .tile figure { aspect-ratio: 16 / 9; }
.grid.n2 .tile figure { aspect-ratio: 4 / 3; }

@media (max-width: 1080px) { .grid, .grid.n3 { grid-template-columns: repeat(3, 1fr); } .grid.n1, .grid.n2 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 760px)  { .grid, .grid.n2, .grid.n3 { grid-template-columns: repeat(2, 1fr); } .grid.n1 { grid-template-columns: 1fr; } }

.tile { display: block; }
.tile figure { margin: 0; overflow: hidden; background: #f2f2f2; aspect-ratio: 3 / 4; }
.tile img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s cubic-bezier(.2,.7,.2,1); }
.tile:hover img { transform: scale(1.045); }

.tile figcaption { padding: 12px 1px 0; }
.tile .nm { font-size: 12px; letter-spacing: .09em; text-transform: uppercase; }
.tile .mt { font-size: 11.5px; color: var(--ink-soft); margin-top: 2px; letter-spacing: .02em; }

/* ── 페이지 헤더 ──────────────────────── */

.page-top { padding: clamp(96px, 13vh, 168px) var(--gut) clamp(34px, 5vw, 64px); }
.page-top .eyebrow { font-size: 11.5px; letter-spacing: .18em; color: var(--ink-soft); text-transform: uppercase; margin: 0 0 14px; }
.page-top h2 { margin: 0; font-size: clamp(20px, 2.5vw, 32px); font-weight: 500; letter-spacing: -0.025em; line-height: 1.45; }

/* ── 회사소개 ─────────────────────────── */

.about { padding: clamp(110px, 16vh, 210px) var(--gut) clamp(80px, 11vw, 150px); }

.about h1 {
  margin: 0; font-size: clamp(21px, 2.7vw, 35px); font-weight: 700;
  line-height: 1.45; letter-spacing: -0.025em; max-width: 20em;
}
.about .ko { margin: 20px 0 0; font-size: clamp(14px, 1.25vw, 17px); font-weight: 400; color: var(--ink); max-width: 34em; line-height: 1.85; }
.about .body { margin: clamp(44px, 7vw, 90px) 0 0; max-width: 44em; color: var(--ink-mid); font-weight: 300; }
.about .body p { margin: 0 0 20px; }

.about-photo { padding: 0 var(--gut) clamp(80px, 10vw, 140px); }

/* ── 프로젝트 상세 ────────────────────── */

.work-top { padding: clamp(96px, 13vh, 172px) var(--gut) clamp(30px, 4vw, 54px); max-width: 900px; }
.work-top .tagline { margin: 0 0 10px; font-size: clamp(17px, 1.9vw, 24px); font-weight: 500; letter-spacing: -0.025em; }
.work-top h1 { margin: 0; font-size: clamp(13px, 1.15vw, 15px); font-weight: 400; letter-spacing: .13em; text-transform: uppercase; color: var(--ink-soft); }
.work-top .desc { margin: clamp(26px, 3.4vw, 44px) 0 0; color: var(--ink-mid); font-weight: 300; }
.work-top .desc p { margin: 0 0 16px; }

.meta { display: flex; flex-wrap: wrap; gap: 28px 44px; margin: 34px 0 0; padding-top: 22px; border-top: 1px solid var(--line); }
.meta div { min-width: 92px; }
.meta dt { font-size: 10.5px; letter-spacing: .15em; color: var(--ink-soft); text-transform: uppercase; }
.meta dd { margin: 3px 0 0; font-size: 14px; }

.shots { padding: clamp(40px, 5vw, 72px) var(--gut) clamp(70px, 9vw, 120px); display: grid; gap: clamp(10px, 1.1vw, 18px); }
.shots img { width: 100%; background: #f2f2f2; cursor: zoom-in; }
@media (min-width: 860px) { .shots { grid-template-columns: 1fr 1fr; } .shots img.wide { grid-column: 1 / -1; } }

.work-nav { display: flex; justify-content: space-between; gap: 20px; padding: 0 var(--gut) clamp(70px, 9vw, 120px); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; }
.work-nav a { color: var(--ink-soft); transition: color .2s; }
.work-nav a:hover { color: var(--ink); }

/* ── 문의 ─────────────────────────────── */

.contact { padding: clamp(96px, 13vh, 168px) var(--gut) clamp(80px, 10vw, 130px); }
.contact h1 { margin: 0 0 clamp(46px, 6vw, 84px); font-size: clamp(19px, 2.3vw, 30px); font-weight: 500; letter-spacing: -0.025em; }

.contact-cols { display: grid; gap: clamp(46px, 6vw, 92px); }
@media (min-width: 900px) { .contact-cols { grid-template-columns: 340px 1fr; } }

.info dt { font-size: 10.5px; letter-spacing: .16em; color: var(--ink-soft); text-transform: uppercase; margin-top: 30px; }
.info dt:first-child { margin-top: 0; }
.info dd { margin: 5px 0 0; font-size: 15px; }

.f { margin-bottom: 20px; }
.f label { display: block; font-size: 11.5px; letter-spacing: .1em; color: var(--ink-soft); text-transform: uppercase; margin-bottom: 7px; }
.f input, .f textarea, .f select {
  width: 100%; padding: 11px 0; font: inherit; font-size: 15px; color: var(--ink);
  background: none; border: 0; border-bottom: 1px solid var(--line); border-radius: 0;
  transition: border-color .2s;
}
.f textarea { min-height: 118px; resize: vertical; }
.f input:focus, .f textarea:focus, .f select:focus { outline: none; border-bottom-color: var(--ink); }
.f2 { display: grid; gap: 20px; }
@media (min-width: 560px) { .f2 { grid-template-columns: 1fr 1fr; } }

.agree { display: flex; gap: 9px; align-items: flex-start; margin: 26px 0 24px; }
.agree input { width: 15px; height: 15px; margin-top: 4px; flex: none; }
.agree label { font-size: 12px; color: var(--ink-soft); line-height: 1.7; }

.send {
  padding: 13px 40px; font: inherit; font-size: 12px; letter-spacing: .13em; text-transform: uppercase;
  background: var(--ink); color: #fff; border: 1px solid var(--ink); cursor: pointer; transition: opacity .2s;
}
.send:hover { opacity: .82; }
.send:disabled { opacity: .45; cursor: default; }

.note { margin-top: 16px; font-size: 13px; display: none; }
.note.ok  { display: block; color: #1a7f37; }
.note.err { display: block; color: #b42318; }

/* ── 푸터 ─────────────────────────────── */

.foot { border-top: 1px solid var(--line); padding: 34px var(--gut) 46px; font-size: 11.5px; color: var(--ink-soft); line-height: 1.9; }
.foot .biz { margin: 0 0 6px; }
.foot .cr { margin: 0; letter-spacing: .04em; }
.foot a:hover { color: var(--ink); }

/* ── 카카오 버튼 ──────────────────────── */

.kakao {
  position: fixed; right: 22px; bottom: 22px; z-index: 70;
  display: inline-flex; align-items: center; gap: 7px;
  padding: 11px 18px; border-radius: 999px;
  background: #fee500; color: #191600; font-size: 13px; font-weight: 500;
  box-shadow: 0 3px 14px rgba(0,0,0,.16);
}
.kakao:hover { filter: brightness(.96); }
.kakao .bubble { flex: none; }

/* 문의 페이지 안의 카카오톡 줄 */
.kakao-line { display: inline-flex; align-items: center; gap: 7px; }
.kakao-line .bubble {
  flex: none; width: 21px; height: 21px; padding: 3px;
  border-radius: 50%; background: #fee500; color: #191600;
}
.kakao-line span { border-bottom: 1px solid var(--line); transition: border-color .2s; }
.kakao-line:hover span { border-bottom-color: var(--ink); }

/* ── 사진 확대 ────────────────────────── */

.lb { position: fixed; inset: 0; z-index: 100; background: rgba(255,255,255,.98); display: none; align-items: center; justify-content: center; cursor: zoom-out; }
.lb.on { display: flex; }
.lb img { max-width: 94vw; max-height: 93vh; object-fit: contain; }

/* ── 모바일 ───────────────────────────── */

@media (max-width: 820px) {
  .burger { display: block; }
  .nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0; background: #fff; color: var(--ink);
    padding: 6px var(--gut) 18px; border-bottom: 1px solid var(--line);
  }
  .nav.on { display: flex; }
  .nav a { padding: 12px 0; font-size: 12.5px; opacity: 1; }
  .head .mark img { height: 25px; }
  .hero-note { position: static; text-align: left; max-width: none; margin-top: 26px; }
  .hero-in { justify-content: flex-end; padding-bottom: clamp(46px, 9vh, 80px); }
}