/* 더함필름 — 다크 시네마틱 테마 */
:root{
  --bg:#0a0a0b; --surface:#121214; --surface-2:#1a1a1e;
  --fg:#f5f5f7; --fg-2:#c7c7cc; --muted:#8a8a92;
  --border:#26262b;
  --accent:#0aa2ff; --accent-2:#d4af37;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg); color:var(--fg);
  font-family:'Pretendard',-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
  margin:0; line-height:1.6; -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  word-break:keep-all; overflow-wrap:break-word;  /* 한글 단어 단위 줄바꿈 ('스토리' 잘림 방지) */
}
.font-display{font-family:'Archivo','Inter',sans-serif;letter-spacing:-.02em}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* 필름 그레인 오버레이 */
.grain::before{
  content:"";position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.04;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* 액센트 */
.text-accent{color:var(--accent)}
.text-gold{color:var(--accent-2)}
.glow{box-shadow:0 0 0 1px rgba(10,162,255,.25),0 8px 40px -8px rgba(10,162,255,.35)}
.glow-gold{box-shadow:0 0 0 1px rgba(212,175,55,.25),0 8px 40px -10px rgba(212,175,55,.3)}

/* 버튼 */
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.85rem 1.6rem;border-radius:8px;
  font-weight:600;font-size:.95rem;transition:all .24s cubic-bezier(.2,0,0,1);cursor:pointer;border:1px solid transparent;white-space:nowrap}
.btn-primary{background:var(--accent);color:#001018}
.btn-primary:hover{filter:brightness(1.1);box-shadow:0 8px 30px -8px rgba(10,162,255,.6);transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.04);color:var(--fg);border-color:var(--border)}
.btn-ghost:hover{background:rgba(255,255,255,.09);border-color:var(--accent)}
.btn-gold{background:transparent;color:var(--accent-2);border-color:rgba(212,175,55,.4)}
.btn-gold:hover{background:rgba(212,175,55,.1)}

/* 레이아웃 */
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:120px 0}
@media(max-width:900px){.section{padding:88px 0}}
@media(max-width:600px){.section{padding:56px 0}}
.eyebrow{font-size:.8rem;letter-spacing:.22em;text-transform:uppercase;color:var(--accent);font-weight:600}
.card{background:var(--surface);border:1px solid var(--border);border-radius:14px;transition:all .24s cubic-bezier(.2,0,0,1)}
.card:hover{border-color:rgba(10,162,255,.4);transform:translateY(-3px)}
.hairline{border-color:var(--border)}

/* 헤더 */
.site-header{position:fixed;top:0;left:0;right:0;z-index:50;transition:all .3s;border-bottom:1px solid transparent}
.site-header.scrolled{background:rgba(10,10,11,.82);backdrop-filter:blur(14px);border-bottom-color:var(--border)}
.nav-link{font-size:.92rem;color:var(--fg-2);transition:color .2s;position:relative}
.nav-link:hover,.nav-link.active{color:var(--fg)}
.nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--accent)}

/* 모바일 sticky CTA */
.mobile-cta{position:fixed;bottom:0;left:0;right:0;z-index:49;display:none;
  grid-template-columns:1fr 1fr 1fr;gap:1px;background:var(--border);border-top:1px solid var(--border)}
.mobile-cta a{background:var(--surface);padding:14px 4px;text-align:center;font-size:.8rem;font-weight:600;color:var(--fg)}
.mobile-cta a.is-primary{background:var(--accent);color:#001018}
@media(max-width:820px){.mobile-cta{display:grid}body{padding-bottom:54px}}

/* 플로팅 퀵버튼 (채팅·전화·유튜브·인스타) — 블랙&골드 시네마틱 컨셉 */
.quick-fab{position:fixed;right:22px;bottom:28px;z-index:48;display:flex;flex-direction:column;gap:10px}
.quick-fab a{display:flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:50%;
  background:linear-gradient(145deg,rgba(30,28,22,.92),rgba(14,14,14,.92));
  border:1px solid rgba(212,175,55,.35);color:var(--accent-2);
  backdrop-filter:blur(8px);transition:all .25s;
  box-shadow:0 4px 18px -6px rgba(0,0,0,.6),inset 0 1px 0 rgba(212,175,55,.15)}
.quick-fab a svg{width:20px;height:20px}
.quick-fab a:hover{background:linear-gradient(145deg,#e8c85a,var(--accent-2));color:#141310;
  border-color:var(--accent-2);transform:translateY(-2px);
  box-shadow:0 10px 28px -8px rgba(212,175,55,.55)}
@media(max-width:820px){.quick-fab{display:none}}

/* ---------- 애니메이션 보강 ---------- */
/* 그리드 스태거 (reveal 그리드의 자식이 순차 등장) */
.stg>*{opacity:0;transform:translateY(18px);
  transition:opacity .65s cubic-bezier(.2,0,0,1),transform .65s cubic-bezier(.2,0,0,1)}
.stg.in>*{opacity:1;transform:none}

/* 히어로 배경 켄번즈 (느린 줌) */
.hero-bg video.ready,.hero-poster{animation:kenburns 26s ease-in-out infinite alternate}
@keyframes kenburns{from{transform:scale(1)}to{transform:scale(1.07)}}

/* SCROLL 인디케이터 */
.hero>div:last-child{animation:scrollNudge 2.4s ease-in-out infinite}
@keyframes scrollNudge{0%,100%{transform:translate(-50%,0);opacity:.55}50%{transform:translate(-50%,8px);opacity:1}}

/* 카드 호버 리프트 */
.card{transition:transform .35s cubic-bezier(.2,0,0,1),border-color .35s,box-shadow .35s}
a.card:hover{transform:translateY(-4px);border-color:rgba(212,175,55,.45);
  box-shadow:0 14px 34px -14px rgba(0,0,0,.55)}
.video-tile{transition:transform .35s cubic-bezier(.2,0,0,1)}
.video-tile:hover{transform:translateY(-4px)}

/* 버튼 호버 마이크로 인터랙션 */
.btn{transition:transform .25s,filter .25s,background .25s,border-color .25s}
.btn:active{transform:scale(.97)}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
}

/* 스크롤 리빌 */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.2,0,0,1),transform .7s cubic-bezier(.2,0,0,1)}
.reveal.in{opacity:1;transform:none}

/* 영상 비율 */
.ratio-16x9{aspect-ratio:16/9}
.ratio-9x16{aspect-ratio:9/16}
.video-tile{position:relative;overflow:hidden;border-radius:12px;background:var(--surface-2);border:1px solid var(--border);cursor:pointer}
.video-tile iframe{width:100%;height:100%;border:0;display:block}
.video-tile .ph{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:var(--muted);
  background:linear-gradient(135deg,#16161a,#0d0d10)}
.video-tile:hover{border-color:rgba(10,162,255,.5)}

/* hero */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0;background:#0a0a0b}
.hero-poster{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.hero-bg iframe{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:100vw;height:56.25vw;min-width:177.78vh;min-height:100vh;z-index:1;opacity:0;transition:opacity .9s ease;pointer-events:none}
.hero-bg video{position:absolute;inset:0;top:0;left:0;transform:none;width:100%;height:100%;object-fit:cover;min-width:0;min-height:0;z-index:1;opacity:0;transition:opacity .9s ease;pointer-events:none}
.hero-bg iframe.ready,.hero-bg video.ready{opacity:1}
.hero-overlay{position:absolute;inset:0;z-index:1;
  background:radial-gradient(120% 80% at 50% 30%,rgba(10,10,11,.35),rgba(10,10,11,.9) 70%,#0a0a0b),
             linear-gradient(180deg,rgba(10,10,11,.6),rgba(10,10,11,.4) 40%,#0a0a0b)}
.hero .wrap{position:relative;z-index:2}
/* 히어로 문구 1초 후 순차 등장 */
.hero-intro > *{opacity:0;transform:translateY(22px);animation:heroUp .85s cubic-bezier(.2,0,0,1) forwards}
.hero-intro > *:nth-child(1){animation-delay:1s}
.hero-intro > *:nth-child(2){animation-delay:1.18s}
.hero-intro > *:nth-child(3){animation-delay:1.36s}
.hero-intro > *:nth-child(4){animation-delay:1.54s}
@keyframes heroUp{to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.hero-intro > *{opacity:1;transform:none;animation:none}}

/* 칩 필터 */
.chip{padding:.5rem 1.1rem;border-radius:999px;border:1px solid var(--border);color:var(--fg-2);font-size:.88rem;cursor:pointer;transition:all .2s;background:transparent}
.chip:hover{border-color:var(--accent);color:var(--fg)}
.chip.active{background:var(--accent);color:#001018;border-color:var(--accent)}

/* form */
.field{width:100%;background:var(--surface-2);border:1px solid var(--border);border-radius:8px;padding:.85rem 1rem;color:var(--fg);font-size:.95rem;font-family:inherit}
.field:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(10,162,255,.15)}
.field::placeholder{color:var(--muted)}
label.lbl{display:block;font-size:.85rem;color:var(--fg-2);margin-bottom:.4rem;font-weight:500}

/* accordion */
.acc-item{border-bottom:1px solid var(--border)}
.acc-q{width:100%;text-align:left;padding:1.3rem 0;display:flex;justify-content:space-between;gap:1rem;align-items:center;background:none;border:0;color:var(--fg);font-size:1.05rem;font-weight:600;cursor:pointer;font-family:inherit}
.acc-a{max-height:0;overflow:hidden;transition:max-height .3s ease;color:var(--fg-2)}
.acc-a .inner{padding-bottom:1.3rem}
.acc-item.open .acc-a{max-height:400px}
.acc-item.open .acc-q .pm{transform:rotate(45deg)}
.pm{transition:transform .3s;color:var(--accent);font-weight:300;font-size:1.5rem}

footer .foot-link{color:var(--muted);font-size:.9rem;transition:color .2s}
footer .foot-link:hover{color:var(--accent)}