/* ============================================================
   선플재단 리뉴얼 프로토타입 — 공용 디자인 시스템
   White base · Sunfull Green #14A556 · Sun Yellow #FFD116
   ============================================================ */
:root{
  --bg:#FFFFFF; --bg-soft:#F6F9F3; --bg-mist:#EFF5EC; --line:#E5EAE1;
  --green:#14A556; --green-deep:#0D7A40; --green-tint:#E3F4E9;
  --yellow:#FFD116; --yellow-soft:#FFF6D2;
  --ink:#1F2A23; --dim:#68736B;
  --maxw:1200px;
  --font:"Pretendard Variable",Pretendard,-apple-system,"Apple SD Gothic Neo","Noto Sans KR","Malgun Gothic",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;overflow-x:hidden}
::selection{background:var(--yellow);color:var(--ink)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
:focus-visible{outline:2px solid var(--green);outline-offset:3px;border-radius:2px}

/* ---------- GNB ---------- */
.gnb{position:fixed;inset:0 0 auto 0;z-index:50;display:flex;align-items:center;justify-content:space-between;
  padding:0 clamp(20px,4vw,48px);height:72px;transition:background .35s,box-shadow .35s;
  background:rgba(255,255,255,.9);backdrop-filter:blur(14px)}
.gnb.solid{box-shadow:0 1px 0 var(--line)}
.gnb .logo{font-weight:900;font-size:19px;letter-spacing:-.02em;display:flex;align-items:center;gap:9px}
.gnb .logo b{color:var(--green)}
.gnb .logo .dot{width:10px;height:10px;border-radius:50%;background:var(--yellow);box-shadow:0 0 0 3px var(--yellow-soft)}
.gnb nav{display:flex;gap:clamp(14px,2.6vw,38px);font-size:15px;font-weight:600}
.gnb nav a{color:#3A453D;padding:8px 2px;transition:color .2s;position:relative}
.gnb nav a:hover,.gnb nav a.on{color:var(--green)}
.gnb nav a.on::after{content:"";position:absolute;left:2px;right:2px;bottom:0;height:2.5px;background:var(--yellow);border-radius:2px}
.gnb .side{display:flex;align-items:center;gap:18px;font-size:14px;font-weight:600}
.gnb .side .login{color:var(--dim)}
.gnb .side .cta{background:var(--green);color:#fff;padding:10px 18px;border-radius:99px;font-weight:800;transition:transform .15s,background .2s}
.gnb .side .cta:hover{transform:translateY(-1px);background:var(--green-deep)}
@media(max-width:900px){.gnb nav{display:none}}

/* ---------- 공용 타이포/버튼 ---------- */
.sec-label{font-size:13px;font-weight:800;letter-spacing:.3em;color:var(--green);margin-bottom:18px;text-transform:uppercase}
.sec-title{font-size:clamp(26px,3.4vw,42px);font-weight:900;letter-spacing:-.03em;text-wrap:balance;line-height:1.25}
mark{background:linear-gradient(0deg,var(--yellow) 0 .28em,transparent .28em);color:inherit}
.btn{display:inline-block;padding:17px 36px;border-radius:99px;font-size:16px;font-weight:800;letter-spacing:-.01em;
  transition:transform .15s,box-shadow .15s,background .2s;cursor:pointer;border:0;font-family:inherit}
.btn.green{background:var(--green);color:#fff;box-shadow:0 10px 30px rgba(20,165,86,.25)}
.btn.green:hover{transform:translateY(-2px);background:var(--green-deep)}
.btn.line{border:1.5px solid #CBD5CC;color:var(--ink);background:none}
.btn.line:hover{border-color:var(--ink)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- 서브페이지 헤더 ---------- */
.page-hero{padding:170px 24px 80px;background:
  radial-gradient(700px 320px at 15% 0%,rgba(255,209,22,.16),transparent 70%),
  radial-gradient(700px 320px at 85% 10%,rgba(20,165,86,.1),transparent 70%),var(--bg)}
.page-hero .wrap{max-width:var(--maxw)}
.page-hero h1{font-size:clamp(36px,5.4vw,64px);font-weight:900;letter-spacing:-.035em;line-height:1.2;text-wrap:balance}
.page-hero p{margin-top:20px;font-size:clamp(15px,1.7vw,18px);line-height:1.8;color:var(--dim);max-width:38em}
.crumb{font-size:13px;font-weight:700;color:var(--dim);margin-bottom:22px;display:flex;gap:10px;align-items:center}
.crumb b{color:var(--green)}

/* ---------- 티커(마퀴) ---------- */
.ticker{overflow:hidden;background:var(--ink);padding:16px 0;transform:rotate(-1.2deg);margin:10px -20px;width:calc(100% + 40px)}
.ticker .track{display:inline-flex;flex-wrap:nowrap;white-space:nowrap;will-change:transform}
.ticker span{font-size:15px;font-weight:800;color:#fff;letter-spacing:.06em;padding:0 26px;position:relative;flex-shrink:0}
.ticker span i{font-style:normal;color:var(--yellow);margin-right:26px}

/* ---------- 비디오 카드 & 그리드 ---------- */
.vcard{cursor:pointer;background:none;border:0;text-align:left;font-family:inherit;padding:0;color:inherit}
.vcard .thumb{position:relative;aspect-ratio:16/9;border-radius:14px;overflow:hidden;background:#DCE6DC;transition:transform .22s,box-shadow .22s}
.vcard:hover .thumb{transform:translateY(-4px);box-shadow:0 18px 40px rgba(31,42,35,.16)}
.vcard .thumb img{width:100%;height:100%;object-fit:cover}
.vcard .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(0,0,0,0) 55%,rgba(0,0,0,.38))}
.vcard .play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:52px;height:52px;border-radius:50%;
  background:rgba(255,255,255,.94);display:grid;place-items:center;z-index:1;box-shadow:0 4px 16px rgba(0,0,0,.22);transition:transform .2s}
.vcard:hover .play{transform:translate(-50%,-50%) scale(1.08)}
.vcard .play::before{content:"";border-style:solid;border-width:9px 0 9px 14px;border-color:transparent transparent transparent var(--ink);margin-left:3px}
.vcard .t1{margin-top:12px;font-size:15px;font-weight:700;line-height:1.5;letter-spacing:-.01em}
.vcard .t2{margin-top:5px;font-size:12.5px;color:var(--dim);font-weight:500}
.vgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px 18px}
@media(max-width:900px){.vgrid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.vgrid{grid-template-columns:1fr}}
.vrow{display:flex;gap:16px;overflow-x:auto;padding:4px 24px 14px;scroll-snap-type:x mandatory;scrollbar-width:none}
.vrow::-webkit-scrollbar{display:none}
.vrow .lead{flex:0 0 max(calc((100vw - var(--maxw))/2 - 24px),0px)}
.vrow .vcard{flex:0 0 300px;scroll-snap-align:start}

/* 스타 응원 대형 카드 */
.starrow .vcard{flex:0 0 380px}
.starrow .vcard .thumb{aspect-ratio:16/10;border-radius:18px}
.starrow .vcard .name{position:absolute;left:18px;bottom:16px;z-index:1;color:#fff}
.starrow .vcard .name b{display:block;font-size:20px;font-weight:900;letter-spacing:-.02em;text-shadow:0 2px 12px rgba(0,0,0,.4)}
.starrow .vcard .name span{font-size:12.5px;font-weight:600;opacity:.85}

/* ---------- 라이트박스 ---------- */
.lightbox{position:fixed;inset:0;z-index:100;display:none;place-items:center;background:rgba(15,22,17,.86);backdrop-filter:blur(6px);padding:24px}
.lightbox.on{display:grid}
.lightbox .frame{width:min(1000px,94vw);aspect-ratio:16/9;border-radius:16px;overflow:hidden;background:#000;box-shadow:0 30px 80px rgba(0,0,0,.5)}
.lightbox iframe{width:100%;height:100%;border:0}
.lightbox .close{position:absolute;top:22px;right:26px;background:none;border:0;color:#fff;font-size:34px;font-weight:300;cursor:pointer;line-height:1;font-family:inherit}
.lightbox .cap{color:rgba(255,255,255,.8);font-size:14px;font-weight:600;margin-top:14px;text-align:center}

/* ---------- 푸터 ---------- */
footer{background:var(--bg-mist);color:#5A655D;padding:64px 24px 44px;font-size:13.5px;border-top:1px solid var(--line)}
footer .wrap{max-width:var(--maxw)}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr;gap:28px}
@media(max-width:860px){footer .cols{grid-template-columns:1fr 1fr}}
footer h4{color:var(--ink);font-size:14px;font-weight:800;margin-bottom:16px}
footer ul{list-style:none;display:flex;flex-direction:column;gap:11px}
footer a:hover{color:var(--green-deep)}
footer .brand{font-weight:900;font-size:18px;color:var(--ink);margin-bottom:14px}
footer .brand b{color:var(--green)}
footer .info{line-height:1.9}
footer .base{margin-top:52px;padding-top:24px;border-top:1px solid #DCE3DB;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}

/* ---------- 리빌 애니메이션 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s ease,transform .8s ease}
.reveal.on{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ============================================================
   v5 — 영상·이펙트 레이어
   ============================================================ */

/* 배경 영상 공통 */
.vidbg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;pointer-events:none}
.page-hero.hasvid{position:relative;overflow:hidden}
.page-hero.hasvid .wrap{position:relative;z-index:2}
.page-hero.hasvid .vveil{position:absolute;inset:0;z-index:1;
  background:linear-gradient(90deg,rgba(8,16,11,.78) 0%,rgba(8,16,11,.55) 42%,rgba(8,16,11,.3) 72%,rgba(8,16,11,.18) 100%)}
.page-hero.hasvid .vidbg{filter:saturate(1.1) contrast(1.03)}
.page-hero.hasvid h1{color:#fff;text-shadow:0 2px 26px rgba(0,0,0,.4)}
.page-hero.hasvid p{color:rgba(255,255,255,.85);text-shadow:0 1px 14px rgba(0,0,0,.35)}
.page-hero.hasvid .crumb,.page-hero.hasvid .crumb a{color:rgba(255,255,255,.68)}
.page-hero.hasvid .crumb b{color:var(--yellow)}
@media(max-width:760px){.page-hero.hasvid .vveil{background:rgba(8,16,11,.72)}}

/* 영상 카드 — 인스타 감성: 풀컬러, 깔끔한 라운드, 호버 리프트 */
.vcard .thumb{isolation:isolate;border-radius:18px;box-shadow:0 4px 16px rgba(31,42,35,.08)}
.vcard .thumb img{filter:saturate(1.12) contrast(1.03);transition:transform .7s cubic-bezier(.16,1,.3,1)}
.vcard:hover .thumb img,.vcard:focus-visible .thumb img{transform:scale(1.07)}
.vcard .thumb::after{background:linear-gradient(180deg,rgba(0,0,0,0) 62%,rgba(0,0,0,.32));transition:opacity .3s}
.vcard:hover .thumb{box-shadow:0 22px 48px rgba(31,42,35,.2)}
/* 재생 마크 — 작고 예쁜 프로스트 서클 (좌하단) */
.vcard .play{left:12px;right:auto;top:auto;bottom:12px;transform:none;width:38px;height:38px;border-radius:50%;
  background:rgba(255,255,255,.85);backdrop-filter:blur(8px);box-shadow:0 4px 14px rgba(0,0,0,.2);
  display:grid;place-items:center;z-index:2;transition:transform .2s,background .2s}
.vcard .play::before{content:"";border-style:solid;border-width:6px 0 6px 10px;border-color:transparent transparent transparent var(--ink);margin-left:2px}
.vcard:hover .play{transform:scale(1.1);background:#fff}
/* 호버 자유 재생 프리뷰 (음소거 인라인 재생)
   — 유튜브 제목바/워터마크가 안 보이도록 크게 오버스캔, 로드 완료 후에만 페이드인 */
.vcard .thumb .preview{position:absolute;left:-20%;top:-20%;width:140%;height:140%;border:0;pointer-events:none;z-index:1;
  opacity:0;transition:opacity .45s ease}
.vcard .thumb .preview.ready{opacity:1}
.vcard .hint-live{position:absolute;right:12px;top:12px;z-index:2;font-size:11px;font-weight:800;color:#fff;letter-spacing:.06em;
  background:rgba(0,0,0,.45);backdrop-filter:blur(6px);padding:5px 10px;border-radius:99px;opacity:0;transition:opacity .3s}
.vcard:hover .hint-live{opacity:1}

/* 스타 카드 3D 틸트 + 샤인 */
.starrow .vcard{perspective:800px}
.starrow .vcard .thumb{transform-style:preserve-3d;transition:transform .25s ease,box-shadow .3s}
.starrow .vcard .shine{position:absolute;inset:0;z-index:2;pointer-events:none;opacity:0;transition:opacity .3s;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,50%),rgba(255,255,255,.35),transparent 55%)}
.starrow .vcard:hover .shine{opacity:1}

/* 히어로 영상 */
.hero video.vidbg{z-index:0}
.hero .veil{z-index:1}
.hero .inner,.hero .film,.hero .scrollcue{z-index:2}
.hero .inner{position:relative}
.hero h1 mark{background:linear-gradient(90deg,var(--yellow),#FFE566,var(--yellow)) 0 0/200% 100%;
  -webkit-box-decoration-break:clone;box-decoration-break:clone;
  background-position:0 0;animation:shimmer 5s linear infinite;
  background-clip:border-box;padding:0 .06em;border-radius:4px;
  background-image:linear-gradient(0deg,var(--yellow) 0 .28em,transparent .28em)}
@keyframes shimmer{to{background-position:200% 0}}

/* 편지 섹션 — 이사장 영상 패널 */
.letter .duohead{display:grid;grid-template-columns:minmax(280px,.85fr) 1.15fr;gap:clamp(20px,3vw,44px);align-items:stretch}
@media(max-width:860px){.letter .duohead{grid-template-columns:1fr}}
.founder-vid{position:relative;border-radius:24px;overflow:hidden;border:1px solid var(--line);
  box-shadow:0 24px 60px rgba(31,42,35,.12);min-height:340px;background:#101410}
.founder-vid video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.founder-vid .tagline{position:absolute;left:20px;bottom:18px;z-index:2;color:#fff;font-size:13px;font-weight:700;
  background:rgba(0,0,0,.42);backdrop-filter:blur(6px);padding:8px 14px;border-radius:99px}

/* 스크롤 진행 바 */
.scrollbar-top{position:fixed;left:0;top:0;height:3px;z-index:60;width:0;
  background:linear-gradient(90deg,var(--green),var(--yellow));transition:width .1s linear}

/* 리빌 살짝 고급화 */
.reveal{transition-duration:.9s;transition-timing-function:cubic-bezier(.16,1,.3,1)}

/* ---------- 재단소개 LNB (헤더 아래 상시 고정) ---------- */
.lnb{position:fixed;top:72px;left:0;right:0;z-index:40;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);box-shadow:0 4px 16px rgba(31,42,35,.04)}
.lnb .wrap{display:flex;gap:4px;overflow-x:auto;padding:10px 24px;scrollbar-width:none;justify-content:center}
.lnb .wrap::-webkit-scrollbar{display:none}
.lnb a{white-space:nowrap;font-size:13.5px;font-weight:700;color:#55605A;padding:10px 20px;border-radius:99px;transition:all .2s}
.lnb a:hover{color:var(--green-deep);background:var(--bg-soft)}
.lnb a.on{background:var(--green);color:#fff}
@media(max-width:700px){.lnb .wrap{justify-content:flex-start}}
/* LNB가 있는 페이지는 히어로를 아래로 밀어줌 */
body.has-lnb .page-hero{padding-top:226px}

/* ---------- GNB 드롭다운 소메뉴 ---------- */
.gnb nav .dd{position:relative;display:inline-block}
.gnb nav .dd > a{display:inline-block}
.gnb nav .dd .ddmenu{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(6px);
  min-width:170px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:8px;
  box-shadow:0 18px 44px rgba(31,42,35,.14);opacity:0;pointer-events:none;transition:opacity .18s,transform .18s}
.gnb nav .dd:hover .ddmenu,.gnb nav .dd:focus-within .ddmenu{opacity:1;pointer-events:auto;transform:translateX(-50%) translateY(0)}
.gnb nav .dd .ddmenu a{display:block;padding:10px 16px;border-radius:10px;font-size:13.5px;font-weight:600;color:#3A453D}
.gnb nav .dd .ddmenu a:hover{background:var(--bg-soft);color:var(--green-deep)}