/* =====================================================================
   LUMEN — 시티오씨엘 7단지
   STUDIO LUMEN / 건축 빛 디자인 스튜디오
   컨셉: 1,453개의 빛 — 대단지의 스케일과 연결을 입자 성좌로.
   공유 골격/공유 signature.css 미사용. 전부 신규 설계.
   ===================================================================== */

:root {
  --void: #060810;          /* 가장 깊은 밤 */
  --night: #0b0f1a;         /* 기본 배경 */
  --night-2: #11172a;       /* 카드/패널 */
  --mist: #1b2540;          /* 라인/구획 */
  --silver: #aab4cc;        /* 보조 텍스트 */
  --paper: #eef1f7;         /* 본문 */
  --white: #ffffff;
  --lumen: #6fd0ff;         /* 시그니처 광원 — 차가운 도시 불빛 */
  --lumen-soft: #2a6c92;
  --amber: #e8c98a;         /* 창에 켜진 따뜻한 한 점 */

  --serif: "Noto Serif KR", Georgia, serif;
  --sans: "Noto Sans KR", system-ui, sans-serif;

  --rail: 88px;             /* 좌측 인덱스 레일 폭 */
  --gut: clamp(22px, 5vw, 80px);
  --max: 1320px;

  --ease: cubic-bezier(.16,.84,.34,1);
  --slow: 1.1s;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  background: var(--night);
  color: var(--paper);
  line-height: 1.7;
  font-weight: 300;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
:focus-visible { outline: 2px solid var(--lumen); outline-offset: 4px; border-radius: 2px; }

/* ---------- 타이포 프리미티브 ---------- */
.kicker {
  font-size: .72rem; letter-spacing: .42em; text-transform: uppercase;
  color: var(--lumen); font-weight: 500;
}
.kicker--amber { color: var(--amber); }
.serif { font-family: var(--serif); }
h1, h2, h3 { font-family: var(--serif); font-weight: 500; line-height: 1.18; letter-spacing: -.01em; }
.display { font-size: clamp(2.5rem, 6.4vw, 5.6rem); font-weight: 600; line-height: 1.05; }
.h2 { font-size: clamp(1.9rem, 4vw, 3.1rem); }
.h3 { font-size: clamp(1.2rem, 2vw, 1.55rem); }
.lead { font-size: clamp(1rem, 1.4vw, 1.18rem); color: var(--silver); font-weight: 300; }
.amber-num { color: var(--amber); font-family: var(--serif); }

/* ---------- 좌측 고정 인덱스 레일 (브로슈어 스파인) ---------- */
.rail {
  position: fixed; top: 0; left: 0; bottom: 0; width: var(--rail);
  z-index: 60; display: flex; flex-direction: column; align-items: center;
  justify-content: space-between; padding: 26px 0;
  border-right: 1px solid var(--mist);
  background: rgba(6,8,16,.55); backdrop-filter: blur(10px);
}
.rail__mark { font-family: var(--serif); font-weight: 700; font-size: 1.05rem; color: var(--white); }
.rail__mark span { color: var(--lumen); }
.rail__nav { display: flex; flex-direction: column; gap: 20px; align-items: center; }
.rail__nav a {
  writing-mode: vertical-rl; font-size: .68rem; letter-spacing: .28em;
  color: var(--silver); text-transform: uppercase; transition: color .3s;
  padding: 2px 0; position: relative;
}
.rail__nav a::after {
  content: ""; position: absolute; left: -8px; top: 50%; width: 4px; height: 4px;
  border-radius: 50%; background: var(--lumen); transform: translateY(-50%) scale(0);
  transition: transform .3s var(--ease);
}
.rail__nav a:hover, .rail__nav a.active { color: var(--white); }
.rail__nav a.active::after { transform: translateY(-50%) scale(1); }
.rail__foot { writing-mode: vertical-rl; font-size: .58rem; letter-spacing: .3em; color: var(--mist); }

/* 상단 진행 게이지 */
.gauge { position: fixed; top: 0; left: var(--rail); right: 0; height: 2px; z-index: 65; background: transparent; }
.gauge__fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--lumen-soft), var(--lumen)); }

/* 모바일 상단바 + 드로어 */
.topbar { display: none; }
.drawer { display: none; }

/* ---------- 본문 컨테이너 ---------- */
.stage { margin-left: var(--rail); }
.wrap { max-width: var(--max); margin-inline: auto; padding-inline: var(--gut); }
section { position: relative; }
.block { padding-block: clamp(90px, 12vw, 170px); }

/* ===================================================================
   HERO — 입자 성좌
   =================================================================== */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  overflow: hidden;
  background:
    radial-gradient(140% 90% at 78% 12%, rgba(111,208,255,.10), transparent 55%),
    radial-gradient(120% 80% at 12% 95%, rgba(232,201,138,.07), transparent 55%),
    linear-gradient(180deg, var(--void), var(--night) 60%);
}
#particles { position: absolute; inset: 0; z-index: 1; }
.hero__photo {
  position: absolute; inset: 0; z-index: 0; opacity: 0;
  background-size: cover; background-position: center;
  transition: opacity 2.2s var(--ease);
  -webkit-mask-image: linear-gradient(105deg, transparent 30%, rgba(0,0,0,.55) 100%);
          mask-image: linear-gradient(105deg, transparent 30%, rgba(0,0,0,.55) 100%);
}
.hero__photo.has-img { opacity: .42; }
.hero__inner { position: relative; z-index: 2; width: 100%; }
.hero__count {
  font-family: var(--serif); font-weight: 700; color: var(--white);
  font-size: clamp(3.4rem, 11vw, 9rem); line-height: .95; letter-spacing: -.03em;
}
.hero__count .unit { font-size: .26em; color: var(--lumen); letter-spacing: 0; margin-left: .25em; }
.hero h1 { color: var(--white); margin-top: 8px; }
.hero__sub { margin-top: 28px; max-width: 540px; }
.hero__meta {
  margin-top: 40px; display: flex; flex-wrap: wrap; gap: 30px 46px;
  padding-top: 28px; border-top: 1px solid var(--mist);
}
.hero__meta dt { font-size: .68rem; letter-spacing: .26em; color: var(--lumen); text-transform: uppercase; }
.hero__meta dd { font-family: var(--serif); font-size: 1.32rem; color: var(--white); margin-top: 6px; }
.hero__scroll {
  position: absolute; bottom: 30px; left: var(--gut); z-index: 2;
  font-size: .64rem; letter-spacing: .3em; color: var(--silver); text-transform: uppercase;
  display: flex; align-items: center; gap: 12px;
}
.hero__scroll i { width: 38px; height: 1px; background: var(--silver); position: relative; overflow: hidden; }
.hero__scroll i::after { content:""; position:absolute; inset:0; background: var(--lumen); animation: sweep 2.4s var(--ease) infinite; }
@keyframes sweep { 0%{transform:translateX(-100%)} 60%,100%{transform:translateX(100%)} }

/* ---------- 버튼 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px; cursor: pointer;
  font-family: var(--sans); font-size: .9rem; font-weight: 500; letter-spacing: .02em;
  padding: 15px 28px; border-radius: 2px; border: 1px solid transparent;
  transition: all .35s var(--ease); background: none; color: inherit;
}
.btn svg { width: 17px; height: 17px; transition: transform .35s var(--ease); }
.btn--lumen { background: var(--lumen); color: var(--void); font-weight: 700; }
.btn--lumen:hover { background: var(--white); }
.btn--lumen:hover svg { transform: translateX(5px); }
.btn--line { border-color: var(--mist); color: var(--paper); }
.btn--line:hover { border-color: var(--lumen); color: var(--lumen); }
.btn--ghost-dark { border-color: rgba(255,255,255,.22); color: #fff; }
.btn--ghost-dark:hover { background: #fff; color: var(--void); }

/* ===================================================================
   REVEAL — 스크롤 등장
   =================================================================== */
[data-rise] { opacity: 0; transform: translateY(40px); transition: opacity var(--slow) var(--ease), transform var(--slow) var(--ease); }
[data-rise].seen { opacity: 1; transform: none; }
[data-rise][data-d="1"] { transition-delay: .12s; }
[data-rise][data-d="2"] { transition-delay: .24s; }
[data-rise][data-d="3"] { transition-delay: .36s; }
[data-rise][data-d="4"] { transition-delay: .48s; }
[data-rise][data-d="5"] { transition-delay: .60s; }
/* 빛이 차오르는 클립 리빌 (이미지용) */
[data-light] { clip-path: inset(0 0 100% 0); transition: clip-path 1.3s var(--ease); }
[data-light].seen { clip-path: inset(0 0 0 0); }

/* ===================================================================
   OVERVIEW — 사업개요
   =================================================================== */
.section-head { max-width: 720px; }
.section-head .h2 { color: var(--white); margin-top: 18px; }
.hr-glow { height: 1px; background: var(--mist); position: relative; overflow: hidden; }
.hr-glow::after { content:""; position:absolute; left:0; top:0; height:100%; width:0; background: linear-gradient(90deg,var(--lumen),transparent); transition: width 1.4s var(--ease) .2s; }
.hr-glow.seen::after { width: 60%; }

.over { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(40px, 6vw, 96px); align-items: end; }
.over__copy .lead { margin-top: 26px; }
.figures { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--mist); border: 1px solid var(--mist); }
.fig { background: var(--night-2); padding: 30px 26px; }
.fig__n { font-family: var(--serif); font-size: clamp(1.9rem, 3vw, 2.7rem); color: var(--white); font-weight: 600; }
.fig__n .s { font-size: .42em; color: var(--lumen); margin-left: 3px; }
.fig__l { font-size: .82rem; color: var(--silver); margin-top: 8px; }

/* ===================================================================
   SIGNATURE STRIP — 7 기준 (수평 인덱스 카드)
   =================================================================== */
.value { background: var(--void); }
.value__grid { margin-top: 60px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--mist); border: 1px solid var(--mist); }
.vcard { background: var(--night); padding: 40px 32px 44px; position: relative; transition: background .4s; overflow: hidden; }
.vcard::before { content:""; position:absolute; left:0; top:0; width:100%; height:2px; background: var(--lumen); transform: scaleX(0); transform-origin: left; transition: transform .5s var(--ease); }
.vcard:hover { background: var(--night-2); }
.vcard:hover::before { transform: scaleX(1); }
.vcard__no { font-family: var(--serif); font-size: .85rem; color: var(--lumen); letter-spacing: .1em; }
.vcard__en { font-family: var(--serif); font-size: 1.5rem; color: var(--white); margin-top: 18px; }
.vcard__ko { font-size: .9rem; color: var(--silver); margin-top: 4px; letter-spacing: .04em; }
.vcard__d { font-size: .9rem; color: var(--silver); margin-top: 18px; line-height: 1.65; }
.vcard--wide { grid-column: 1 / -1; display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; align-items: center; }
@media (max-width: 860px){ .vcard--wide { grid-template-columns: 1fr; gap: 14px; } }

/* ===================================================================
   LOCATION
   =================================================================== */
.loc { display: grid; grid-template-columns: .95fr 1.05fr; gap: clamp(36px,5vw,80px); align-items: center; }
.loc__img { aspect-ratio: 4/5; border-radius: 3px; background-size: cover; background-position: center; background-color: var(--night-2); min-height: 360px; position: relative; }
.loc__img::after { content:""; position:absolute; inset:0; border:1px solid rgba(111,208,255,.18); border-radius:3px; pointer-events:none; }
.loc__list { display: grid; gap: 0; margin-top: 30px; }
.loc__row { display: grid; grid-template-columns: 92px 1fr; gap: 20px; padding: 22px 0; border-top: 1px solid var(--mist); align-items: baseline; }
.loc__row:last-child { border-bottom: 1px solid var(--mist); }
.loc__tag { font-family: var(--serif); color: var(--amber); font-size: 1.05rem; }
.loc__row p { font-size: .98rem; color: var(--silver); }

/* ===================================================================
   COMPLEX GALLERY — 비대칭 모자이크
   =================================================================== */
.complex { background: var(--void); }
.mosaic { margin-top: 56px; display: grid; grid-template-columns: 2fr 1fr; grid-auto-rows: 1fr; gap: 14px; }
.tile { position: relative; overflow: hidden; border-radius: 3px; background: var(--night-2); min-height: 240px; }
.tile > span { position:absolute; inset:0; background-size: cover; background-position: center; transition: transform 6s var(--ease); }
.tile:hover > span { transform: scale(1.07); }
.tile figcaption { position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 24px 20px; font-family: var(--serif); color: #fff; font-size: 1rem; background: linear-gradient(transparent, rgba(6,8,16,.85)); z-index: 2; }
.tile--hero { grid-row: span 2; min-height: 500px; }

/* ===================================================================
   UNIT PLAN — 타입 테이블
   =================================================================== */
.plan__wrap { margin-top: 54px; border: 1px solid var(--mist); border-radius: 3px; overflow: hidden; }
.plan__row { display: grid; grid-template-columns: 1.1fr 1fr 1.4fr; gap: 0; border-bottom: 1px solid var(--mist); align-items: center; transition: background .3s; }
.plan__row:last-child { border-bottom: 0; }
.plan__row:hover { background: var(--night-2); }
.plan__row--head { background: var(--night-2); }
.plan__row--head > div { font-size: .72rem; letter-spacing: .2em; color: var(--lumen); text-transform: uppercase; }
.plan__cell { padding: 24px 28px; }
.plan__type { font-family: var(--serif); font-size: 1.35rem; color: var(--white); }
.plan__type small { display:block; font-family: var(--sans); font-size: .72rem; color: var(--silver); letter-spacing:.1em; margin-top:2px; }
.plan__hh { font-family: var(--serif); font-size: 1.5rem; color: var(--amber); }
.plan__note { font-size: .92rem; color: var(--silver); }
.plan__foot { margin-top: 22px; font-size: .86rem; color: var(--silver); }

/* ===================================================================
   SCHEDULE — 광선 타임라인
   =================================================================== */
.sched { background: var(--void); }
.beam { margin-top: 60px; position: relative; padding-left: 30px; }
.beam::before { content:""; position:absolute; left: 4px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--lumen), var(--lumen-soft), transparent); }
.beam__step { position: relative; padding: 0 0 44px 36px; }
.beam__step:last-child { padding-bottom: 0; }
.beam__dot { position: absolute; left: -30px; top: 4px; width: 12px; height: 12px; border-radius: 50%; background: var(--night); border: 2px solid var(--lumen); box-shadow: 0 0 0 4px rgba(111,208,255,.12); }
.beam__no { font-size: .72rem; letter-spacing: .24em; color: var(--lumen); text-transform: uppercase; }
.beam__t { font-family: var(--serif); font-size: 1.4rem; color: var(--white); margin-top: 6px; }
.beam__d { font-size: .94rem; color: var(--silver); margin-top: 6px; max-width: 460px; }

/* ===================================================================
   REGISTER — 폼
   =================================================================== */
.reg { background: linear-gradient(180deg, var(--night), var(--void)); }
.reg__grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(36px,5vw,80px); align-items: start; }
.reg__call { margin-top: 30px; font-size: .95rem; color: var(--silver); }
.reg__call b { font-family: var(--serif); color: var(--lumen); font-size: 1.6rem; display: block; letter-spacing: .04em; margin-top: 4px; }
.formcard { background: var(--night-2); border: 1px solid var(--mist); border-radius: 4px; padding: clamp(28px, 4vw, 44px); }
.field { margin-bottom: 20px; }
.field label { display: block; font-size: .76rem; letter-spacing: .12em; color: var(--lumen); text-transform: uppercase; margin-bottom: 9px; }
.field input, .field select {
  width: 100%; background: var(--void); border: 1px solid var(--mist); color: var(--paper);
  padding: 14px 16px; border-radius: 2px; font-family: var(--sans); font-size: 1rem; font-weight: 300;
  transition: border-color .3s;
}
.field input::placeholder { color: #4a5878; }
.field input:focus, .field select:focus { outline: none; border-color: var(--lumen); }
.field--row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.agree { display: flex; gap: 11px; align-items: flex-start; font-size: .86rem; color: var(--silver); margin: 6px 0 22px; cursor: pointer; }
.agree input { margin-top: 4px; accent-color: var(--lumen); flex: none; }
.formcard .btn { width: 100%; justify-content: center; }
.form-msg { margin-top: 16px; font-size: .92rem; color: var(--lumen); display: none; align-items: center; gap: 8px; }
.form-msg.show { display: flex; }
.form-msg svg { width: 18px; height: 18px; }

/* ===================================================================
   DIRECTIONS
   =================================================================== */
.dir { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(36px,5vw,80px); align-items: center; }
.dir__info { display: grid; gap: 12px; margin-top: 26px; color: var(--silver); font-size: .98rem; }
.dir__info b { color: var(--paper); font-weight: 500; }
.dir__map { aspect-ratio: 4/3; border-radius: 3px; background-size: cover; background-position: center; background-color: var(--night-2); min-height: 300px; position: relative; }
.dir__map::after { content:""; position:absolute; inset:0; border:1px solid rgba(111,208,255,.18); border-radius:3px; }

/* ===================================================================
   FOOTER
   =================================================================== */
.footer { background: var(--void); border-top: 1px solid var(--mist); padding: 70px 0 50px; }
.footer__mark { font-family: var(--serif); font-weight: 700; font-size: 1.5rem; color: var(--white); }
.footer__mark span { color: var(--lumen); }
.footer__legal { margin-top: 22px; font-size: .82rem; color: var(--silver); line-height: 1.9; }
.footer__disc { margin-top: 26px; padding-top: 24px; border-top: 1px solid var(--mist); font-size: .76rem; color: #5b6889; line-height: 1.9; }

/* ===================================================================
   QUICK FLOATING CTA
   =================================================================== */
.quick { position: fixed; right: 18px; bottom: 18px; z-index: 55; display: flex; flex-direction: column; gap: 10px; }
.quick a { width: 56px; height: 56px; border-radius: 50%; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; background: var(--night-2); border: 1px solid var(--mist); color: var(--paper); font-size: .54rem; letter-spacing: .04em; transition: all .3s var(--ease); }
.quick a svg { width: 19px; height: 19px; }
.quick a:hover { border-color: var(--lumen); color: var(--lumen); transform: translateY(-3px); }
.quick a.primary { background: var(--lumen); color: var(--void); border-color: var(--lumen); font-weight: 700; }
.quick a.primary:hover { background: var(--white); }

/* ===================================================================
   RESPONSIVE
   =================================================================== */
@media (max-width: 980px){
  .over, .loc, .reg__grid, .dir, .value__grid { grid-template-columns: 1fr; }
  .value__grid { gap: 1px; }
  .value__grid .vcard { padding: 32px 26px; }
  .mosaic { grid-template-columns: 1fr; }
  .tile--hero { grid-row: auto; min-height: 320px; }
  .plan__row { grid-template-columns: 1fr 1fr; }
  .plan__row--head { display: none; }
  .plan__note { grid-column: 1 / -1; padding-top: 0; }
}

@media (max-width: 760px){
  :root { --rail: 0px; }
  .rail { display: none; }
  .gauge { left: 0; }
  .stage { margin-left: 0; }
  .topbar {
    display: flex; position: fixed; top: 0; left: 0; right: 0; z-index: 60;
    align-items: center; justify-content: space-between; padding: 14px var(--gut);
    background: rgba(6,8,16,.8); backdrop-filter: blur(10px); border-bottom: 1px solid var(--mist);
  }
  .topbar__mark { font-family: var(--serif); font-weight: 700; color: #fff; }
  .topbar__mark span { color: var(--lumen); }
  .burger { width: 30px; height: 20px; position: relative; background: none; border: 0; cursor: pointer; }
  .burger span { position: absolute; left: 0; right: 0; height: 2px; background: #fff; transition: .3s; }
  .burger span:nth-child(1){ top: 0; } .burger span:nth-child(2){ top: 9px; } .burger span:nth-child(3){ top: 18px; }
  .drawer {
    display: flex; position: fixed; inset: 0; z-index: 80; background: var(--void);
    flex-direction: column; justify-content: center; padding: 0 var(--gut);
    transform: translateX(100%); transition: transform .5s var(--ease);
  }
  .drawer.open { transform: none; }
  .drawer a { font-family: var(--serif); font-size: 1.5rem; padding: 15px 0; border-bottom: 1px solid var(--mist); color: #fff; }
  .drawer a.cta { color: var(--lumen); }
  .drawer .x { position: absolute; top: 18px; right: var(--gut); font-size: 2.2rem; background: none; border: 0; color: #fff; cursor: pointer; }
  .hero { padding-top: 60px; }
  .hero__scroll { display: none; }
  .field--row { grid-template-columns: 1fr; }
  .quick a .qt { display: none; }
}

/* ===================================================================
   ACCESSIBILITY — 모션 최소화 시 정적 표현
   =================================================================== */
@media (prefers-reduced-motion: reduce){
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  [data-rise], [data-light] { opacity: 1 !important; transform: none !important; clip-path: none !important; }
  #particles { display: none; }   /* 입자 정지/숨김 — 정적 그라데이션만 */
  .hero__photo.has-img { opacity: .5; }
}

/* PLOT-KO-WRAP: 한글 어절 단위 줄바꿈 + 오버플로 방지 (어떤 폭에서도 자연스럽게) */
:where(html){word-break:keep-all;overflow-wrap:break-word}

/* ── 예시 평면도(원본 도면 부재 시 대체) ───────────────────── */
.ex-plan{--plan-accent:var(--lumen);margin:30px 0 4px;color:var(--silver)}
.ex-plan>svg{display:block;width:100%;max-width:720px;margin:0 auto;background:var(--night-2);border:1px solid var(--mist);border-radius:16px;padding:14px}
.ex-plan__cap{max-width:720px;margin:13px auto 0;text-align:center;font-size:.82rem;color:var(--silver);opacity:.85;letter-spacing:.01em}
.ex-plan__cap b{color:var(--paper);font-weight:600}