/* ============================================================
   사용금지 — 공식 홈페이지
   팔레트: 게임 DNAUITheme (흑 + 핏빛 + 웜화이트 + 앰버, 블루 없음)
   서체: 나눔명조 (게임 전역 폰트와 동일)
   ============================================================ */

:root{
  --black:   #060608;
  --panel:   #101014;
  --panel2:  #16161c;
  --frame:   #1b161b;
  --blood:   #2b0a0a;
  --blood-hi:#8f2323;
  --blood-btn:#5c1414;
  --warm:    #d9ccc4;
  --warm-hi: #f0e7de;
  --dim:     #9c7474;
  --gray:    #74747c;
  --gray-dim:#55555c;
  --amber:   #e6c14a;
  --amber-bg:#1c1600;
  --hot:     #d97448;
}

*{ margin:0; padding:0; box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  background:var(--black);
  color:var(--warm);
  font-family:'Nanum Myeongjo', 'NanumMyeongjo', serif;
  line-height:1.7;
  overflow-x:hidden;
}
::selection{ background:var(--blood-hi); color:var(--warm-hi); }
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }

/* ---------- CRT / 비네팅 오버레이 ---------- */
.crt{
  position:fixed; inset:0; z-index:90; pointer-events:none;
  background:repeating-linear-gradient(0deg,
    rgba(0,0,0,0)   0px, rgba(0,0,0,0)   2px,
    rgba(0,0,0,.14) 3px, rgba(0,0,0,0)   4px);
  mix-blend-mode:multiply;
}
.vignette{
  position:fixed; inset:0; z-index:91; pointer-events:none;
  background:radial-gradient(ellipse at center,
    rgba(0,0,0,0) 55%, rgba(0,0,0,.42) 100%);
}
#glitch-flash{
  position:fixed; inset:0; z-index:99; pointer-events:none;
  background:var(--blood-hi); opacity:0; transition:opacity .05s;
}
#glitch-flash.on{ opacity:.28; }

/* ---------- 내비게이션 ---------- */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:80;
  display:flex; align-items:center; gap:28px;
  padding:14px 28px;
  background:rgba(6,6,8,.86);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--blood);
}
.nav-logo{
  font-weight:800; font-size:1.15rem; letter-spacing:.35em;
  color:var(--warm-hi); white-space:nowrap;
}
.nav-logo .sq, .footer-logo .sq{ color:var(--blood-hi); letter-spacing:0; }
.nav-links{ display:flex; gap:22px; margin-left:auto; }
.nav-links a{
  font-size:.92rem; color:var(--gray); letter-spacing:.12em;
  transition:color .2s;
}
.nav-links a:hover{ color:var(--amber); }
.nav-cta{ margin-left:6px; }

/* ---------- 버튼 ---------- */
.btn{
  display:inline-block; cursor:pointer;
  font-family:inherit; font-weight:700; letter-spacing:.14em;
  padding:10px 22px; font-size:.92rem;
  border:1px solid var(--blood-hi);
  color:var(--warm-hi); background:transparent;
  transition:background .2s, color .2s, box-shadow .2s, transform .1s;
}
.btn:hover{ transform:translateY(-1px); }
.btn-blood{
  background:var(--blood-btn);
  box-shadow:0 0 18px rgba(143,35,35,.25);
}
.btn-blood:hover{
  background:var(--blood-hi);
  box-shadow:0 0 28px rgba(143,35,35,.55);
}
.btn-ghost{ border-color:var(--gray-dim); color:var(--warm); }
.btn-ghost:hover{ border-color:var(--amber); color:var(--amber); }
.btn-lg{ padding:15px 34px; font-size:1.02rem; }
.btn-xl{ padding:20px 52px; font-size:1.22rem; }

/* ---------- 히어로 ---------- */
.hero{
  min-height:100svh;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  text-align:center; padding:120px 20px 80px; position:relative;
  background:
    radial-gradient(ellipse 70% 45% at 50% 30%, rgba(43,10,10,.55) 0%, rgba(6,6,8,0) 70%),
    var(--black);
}
.hero-kicker{
  color:var(--dim); font-size:.95rem; letter-spacing:.3em; margin-bottom:26px;
}
.hero-title{
  font-size:clamp(3rem, 11vw, 7.5rem);
  font-weight:800; color:var(--warm-hi);
  letter-spacing:.12em; line-height:1.15;
  text-shadow:0 0 42px rgba(143,35,35,.55);
  position:relative;
  animation:flicker 7s infinite;
}
.hero-title::before{
  content:attr(data-text);
  position:absolute; inset:0; color:var(--blood-hi);
  clip-path:inset(0 0 100% 0); opacity:.8;
  animation:glitch-slice 6s infinite steps(1);
  pointer-events:none;
}
.hero-sub{
  color:var(--dim); letter-spacing:.42em; font-size:1rem; margin-top:18px;
}
.hero-tag{
  margin-top:42px; font-size:clamp(1.02rem, 2.4vw, 1.3rem);
  color:var(--warm); line-height:2;
}
.hero-tag strong{ color:var(--amber); font-weight:700; }
.hero-tag em{ color:var(--hot); font-style:normal; }
.hero-cta{ margin-top:44px; display:flex; gap:18px; flex-wrap:wrap; justify-content:center; }
.hero-meta{ margin-top:26px; color:var(--gray); font-size:.85rem; letter-spacing:.18em; }
.hero-scroll{
  position:absolute; bottom:26px; left:50%; transform:translateX(-50%);
  color:var(--blood-hi); animation:bob 1.8s infinite ease-in-out;
}
@keyframes bob{ 0%,100%{ transform:translate(-50%,0);} 50%{ transform:translate(-50%,8px);} }
@keyframes flicker{
  0%,7.9%,8.4%,9.9%,10.2%,100%{ opacity:1; }
  8%,10%{ opacity:.55; }
  62%{ opacity:1; } 62.4%{ opacity:.7; } 62.8%{ opacity:1; }
}
@keyframes glitch-slice{
  0%, 89%, 100%{ clip-path:inset(0 0 100% 0); transform:none; }
  90%{ clip-path:inset(28% 0 55% 0); transform:translateX(-5px); }
  92%{ clip-path:inset(60% 0 18% 0); transform:translateX(4px); }
  94%{ clip-path:inset(10% 0 78% 0); transform:translateX(-3px); }
  96%{ clip-path:inset(0 0 100% 0); transform:none; }
}

/* ---------- 경고 마키 ---------- */
.warnbar{
  background:var(--amber-bg);
  border-top:2px solid rgba(230,193,74,.85);
  border-bottom:2px solid rgba(230,193,74,.85);
  overflow:hidden; white-space:nowrap;
  padding:10px 0;
}
.warnbar-track{
  display:inline-block; color:var(--amber);
  font-size:.95rem; letter-spacing:.1em;
  animation:marquee 36s linear infinite;
}
@keyframes marquee{ from{ transform:translateX(0);} to{ transform:translateX(-50%);} }

/* ---------- 섹션 공통 ---------- */
.section{ padding:110px 0; }
.section-alt{ background:var(--panel); border-top:1px solid var(--blood); border-bottom:1px solid var(--blood); }
.wrap{ max-width:1080px; margin:0 auto; padding:0 24px; }
.sec-kicker{ color:var(--blood-hi); letter-spacing:.32em; font-size:.85rem; margin-bottom:14px; }
.sec-title{
  font-size:clamp(1.7rem, 4.4vw, 2.6rem); font-weight:800;
  color:var(--warm-hi); letter-spacing:.06em; margin-bottom:26px;
}
.lead{ color:var(--warm); max-width:760px; font-size:1.05rem; }

/* 스크롤 리빌 */
.reveal{ opacity:0; transform:translateY(26px); transition:opacity .7s ease, transform .7s ease; }
.reveal.in{ opacity:1; transform:none; }

/* ---------- 핵심 루프 ---------- */
.loop{
  display:flex; align-items:stretch; gap:14px; flex-wrap:wrap;
  margin:48px 0 0;
}
.loop-step{
  flex:1 1 150px; background:var(--panel); border:1px solid var(--frame);
  padding:20px 16px 16px; text-align:center; position:relative;
  font-weight:700; color:var(--warm-hi); letter-spacing:.08em;
}
.loop-step small{ display:block; margin-top:6px; font-weight:400; color:var(--dim); font-size:.82rem; letter-spacing:.04em; }
.loop-num{
  position:absolute; top:-12px; left:50%; transform:translateX(-50%);
  background:var(--blood-btn); color:var(--warm-hi);
  font-size:.78rem; padding:1px 10px; border:1px solid var(--blood-hi);
}
.loop-arrow{ align-self:center; color:var(--blood-hi); }

.stats{ display:flex; gap:14px; flex-wrap:wrap; margin-top:54px; }
.stat{
  flex:1 1 180px; background:var(--amber-bg); border:1px solid rgba(230,193,74,.4);
  padding:18px 20px; text-align:center;
}
.stat strong{ display:block; color:var(--amber); font-size:1.3rem; letter-spacing:.06em; }
.stat span{ color:var(--gray); font-size:.85rem; letter-spacing:.12em; }

/* ---------- 교시 카드 ---------- */
.periods{
  display:grid; grid-template-columns:repeat(auto-fit, minmax(250px, 1fr));
  gap:20px; margin-top:48px;
}
.period{
  background:var(--black); border:1px solid var(--frame);
  padding:0 0 22px; transition:border-color .25s, box-shadow .25s, transform .25s;
}
.period:hover{
  border-color:var(--blood-hi);
  box-shadow:0 0 30px rgba(143,35,35,.3);
  transform:translateY(-4px);
}
.period header{
  display:flex; justify-content:space-between; align-items:center;
  background:var(--blood); padding:12px 18px; margin-bottom:18px;
}
.period-no{ font-weight:800; color:var(--warm-hi); letter-spacing:.2em; }
.period-axis{ font-size:.74rem; color:var(--dim); letter-spacing:.1em; }
.period blockquote{
  margin:0 18px 16px; padding:14px 16px;
  border-left:3px solid var(--blood-hi);
  background:var(--panel);
  color:var(--warm-hi); font-size:.98rem; line-height:1.9;
}
.period ul{ list-style:none; margin:0 18px; }
.period li{ font-size:.88rem; color:var(--warm); padding:4px 0; }
.period li b{ color:var(--amber); font-weight:700; margin-right:6px; }

/* ---------- 특징 ---------- */
.features{
  display:grid; grid-template-columns:repeat(auto-fit, minmax(300px, 1fr));
  gap:20px; margin-top:48px;
}
.feature{
  background:var(--panel); border:1px solid var(--frame); padding:26px 26px 24px;
  transition:border-color .25s;
}
.feature:hover{ border-color:var(--blood-hi); }
.feature h3{
  color:var(--warm-hi); font-size:1.05rem; letter-spacing:.04em; margin-bottom:12px;
}
.feature h3::first-letter{ color:var(--blood-hi); }
.feature p{ color:var(--warm); font-size:.92rem; opacity:.9; }

/* ---------- 스크린샷 ---------- */
.shots{
  display:grid; grid-template-columns:repeat(auto-fit, minmax(280px, 1fr));
  gap:20px; margin-top:48px;
}
.shot{ background:var(--black); border:1px solid var(--frame); }
.shot img{ width:100%; aspect-ratio:16/9.5; object-fit:cover; filter:saturate(.9) contrast(1.05); }
.shot figcaption{
  padding:10px 14px; font-size:.82rem; color:var(--gray); letter-spacing:.08em;
  border-top:1px solid var(--frame);
}
.broken{
  aspect-ratio:16/9.5; display:flex; flex-direction:column;
  align-items:center; justify-content:center; gap:8px;
  background:var(--panel2); color:var(--gray-dim);
  font-size:.92rem; letter-spacing:.06em; text-align:center; padding:12px;
}
.broken-x{ color:var(--blood-hi); font-size:1.1rem; }
.broken small{ font-size:.76rem; color:var(--gray-dim); }

/* ---------- 다운로드 ---------- */
.dl{
  background:
    radial-gradient(ellipse 60% 50% at 50% 45%, rgba(43,10,10,.6) 0%, rgba(6,6,8,0) 75%),
    var(--black);
  text-align:center;
}
.dl-wrap .lead{ margin:0 auto 46px; }
.dl .sec-kicker{ text-align:center; }
.dl-meta{ margin-top:20px; color:var(--gray); font-size:.86rem; letter-spacing:.14em; }
.dl-alt{ margin-top:14px; }
.dl-alt a{
  color:var(--dim); font-size:.92rem; letter-spacing:.1em;
  border-bottom:1px solid var(--blood-hi); transition:color .2s;
}
.dl-alt a:hover{ color:var(--amber); }
.controls{ margin-top:72px; }
.controls h3{ color:var(--dim); letter-spacing:.3em; font-size:.9rem; margin-bottom:22px; }
.controls-grid{
  display:grid; grid-template-columns:repeat(auto-fit, minmax(150px, 1fr));
  gap:12px; max-width:760px; margin:0 auto;
}
.controls-grid div{
  background:var(--panel); border:1px solid var(--frame);
  padding:12px 10px; display:flex; flex-direction:column; gap:4px; align-items:center;
}
.controls-grid kbd{
  font-family:inherit; font-weight:800; color:var(--warm-hi);
  border:1px solid var(--gray-dim); padding:2px 10px; font-size:.84rem;
}
.controls-grid span{ color:var(--gray); font-size:.8rem; }

/* ---------- 푸터 ---------- */
.footer{ border-top:1px solid var(--blood); background:var(--black); }
.footer-wrap{
  display:flex; align-items:center; justify-content:space-between;
  flex-wrap:wrap; gap:12px; padding-top:34px; padding-bottom:34px;
}
.footer-logo{ font-weight:800; letter-spacing:.3em; color:var(--warm-hi); }
.footer-note{ color:var(--gray); font-size:.84rem; }
.footer-note a{ color:var(--dim); border-bottom:1px solid var(--blood-hi); }
.footer-note a:hover{ color:var(--amber); }
.statusbar{
  display:flex; justify-content:space-between; gap:14px; flex-wrap:wrap;
  background:#0a090c; border-top:1px solid var(--frame);
  padding:7px 16px; font-size:.78rem; color:var(--dim); letter-spacing:.06em;
}
.statusbar b{ color:var(--amber); font-weight:700; cursor:pointer; }
.statusbar-r{ color:var(--gray-dim); }

/* ---------- 반응형 ---------- */
@media (max-width:760px){
  .nav{ padding:10px 14px; gap:14px; }
  .nav-links{ display:none; }
  .loop-arrow{ display:none; }
  .footer-wrap{ justify-content:center; text-align:center; }
}

/* ---------- 모션 최소화 ---------- */
@media (prefers-reduced-motion:reduce){
  .hero-title, .hero-title::before, .warnbar-track, .hero-scroll{ animation:none; }
  .reveal{ opacity:1; transform:none; transition:none; }
  html{ scroll-behavior:auto; }
}