/* ============================================================
   DEVIST — devist.co.kr
   ============================================================ */

:root{
  --bg:#05060a;
  --bg2:#0a0c14;
  --ink:#f4f5fb;
  --muted:#9aa0b5;
  --faint:#5a6076;
  --line:rgba(255,255,255,.09);
  --line2:rgba(255,255,255,.055);
  --violet:#9b7bff;
  --cyan:#37d5d0;
  --card:rgba(255,255,255,.028);
  --maxw:1180px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:'Pretendard','Space Grotesk',-apple-system,BlinkMacSystemFont,sans-serif;
  font-weight:400;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  letter-spacing:-.01em;
  word-break:keep-all;
}
a{color:inherit;text-decoration:none}
::selection{background:var(--violet);color:#fff}

/* ---- hero 3D canvas (scoped to hero only — never behind body copy) ---- */
#bg-canvas{
  position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:100vw;height:100%;
  z-index:0;pointer-events:none;
}
.grain{ /* subtle film grain over the whole page — very low, doesn't hurt legibility */
  position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.35;
  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='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  mix-blend-mode:overlay;
}

main,.nav,.footer{position:relative;z-index:2}

/* ---- typography helpers ---- */
.grad{
  background:linear-gradient(100deg,var(--violet),var(--cyan) 70%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
h1,h2,h3,h4{letter-spacing:-.035em;line-height:1.06;font-weight:600}
.kicker{
  font-family:'Space Grotesk',sans-serif;font-size:.78rem;letter-spacing:.28em;
  text-transform:uppercase;color:var(--violet);font-weight:500;margin-bottom:20px;
}

/* ============================================================
   NAV
   ============================================================ */
.nav{
  position:fixed;top:0;left:0;right:0;height:72px;z-index:50;
  display:flex;align-items:center;
  transition:background .4s var(--ease),border-color .4s var(--ease),backdrop-filter .4s,height .4s var(--ease);
  border-bottom:1px solid transparent;
}
.nav__inner{
  width:100%;max-width:var(--maxw);margin:0 auto;
  padding:0 clamp(20px,5vw,56px);
  display:flex;align-items:center;justify-content:space-between;
}
.nav.scrolled{
  background:rgba(6,7,12,.72);backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);height:62px;
}
.nav__brand{display:flex;align-items:center;gap:10px}
.nav__logo{display:flex;filter:drop-shadow(0 0 8px rgba(139,123,255,.5))}
.nav__word{
  font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:1.15rem;
  letter-spacing:.12em;
}
.nav__links{display:flex;align-items:center;gap:clamp(18px,3vw,38px)}
.nav__links a{
  font-size:.92rem;color:var(--muted);transition:color .25s;font-weight:500;
}
.nav__links a:hover{color:var(--ink)}
.nav__cta{
  color:var(--ink)!important;border:1px solid var(--line);
  padding:9px 18px;border-radius:100px;transition:all .3s var(--ease)!important;
}
.nav__cta:hover{background:var(--ink);color:var(--bg)!important;border-color:var(--ink)}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  padding:120px clamp(20px,5vw,56px) 80px;position:relative;
  max-width:var(--maxw);margin:0 auto;
}
.hero::before{ /* left scrim keeps hero copy legible over the 3D form */
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:100vw;height:100%;z-index:1;pointer-events:none;
  background:linear-gradient(100deg,var(--bg) 10%,rgba(5,6,10,.8) 32%,rgba(5,6,10,.3) 52%,transparent 70%);
}
.hero::after{ /* bottom fade into the solid page so the seam is invisible */
  content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);
  width:100vw;height:180px;z-index:1;pointer-events:none;
  background:linear-gradient(transparent,var(--bg));
}
.hero__inner{max-width:660px;position:relative;z-index:2}
.hero__eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:'Space Grotesk',sans-serif;font-size:.8rem;letter-spacing:.2em;
  color:var(--muted);margin-bottom:30px;padding:8px 16px;
  border:1px solid var(--line);border-radius:100px;background:rgba(255,255,255,.02);
}
.hero__eyebrow .dot{
  width:7px;height:7px;border-radius:50%;background:var(--cyan);
  box-shadow:0 0 10px var(--cyan);animation:pulse 2s infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero__title{
  font-size:clamp(2.9rem,8.5vw,6.4rem);font-weight:600;margin-bottom:28px;
  letter-spacing:-.045em;
}
.hero__sub{
  font-size:clamp(1.02rem,1.7vw,1.24rem);color:var(--muted);max-width:480px;
  line-height:1.75;margin-bottom:42px;
}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:64px}
.hero__meta{display:flex;gap:clamp(28px,5vw,64px);flex-wrap:wrap}
.hero__meta div{display:flex;flex-direction:column;gap:2px}
.hero__meta b{
  font-family:'Space Grotesk',sans-serif;font-size:clamp(1.7rem,3vw,2.4rem);
  font-weight:600;background:linear-gradient(120deg,#fff,#b9bed6);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero__meta span{font-size:.82rem;color:var(--faint);letter-spacing:.01em}
.hero__scroll{
  position:absolute;bottom:34px;left:50%;transform:translateX(-50%);z-index:2;
  font-family:'Space Grotesk',sans-serif;font-size:.68rem;letter-spacing:.3em;
  color:var(--faint);display:flex;flex-direction:column;align-items:center;gap:10px;
}
.hero__scroll span{
  width:1px;height:40px;background:linear-gradient(var(--violet),transparent);
  animation:scrolldown 2.2s var(--ease) infinite;
}
@keyframes scrolldown{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ---- buttons ---- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:600;font-size:.96rem;padding:14px 28px;border-radius:100px;
  transition:all .3s var(--ease);cursor:pointer;border:1px solid transparent;
  letter-spacing:-.01em;white-space:nowrap;
}
.btn--primary{
  background:linear-gradient(100deg,var(--violet),#7f9dff);color:#fff;
  box-shadow:0 8px 30px -8px rgba(139,123,255,.7);
}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 14px 40px -8px rgba(139,123,255,.85)}
.btn--ghost{border-color:var(--line);color:var(--ink);background:rgba(255,255,255,.02)}
.btn--ghost:hover{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.25)}
.btn--lg{padding:18px 40px;font-size:1.1rem;font-family:'Space Grotesk',sans-serif;letter-spacing:.01em}

/* ============================================================
   MARQUEE
   ============================================================ */
.marquee{
  border-top:1px solid var(--line2);border-bottom:1px solid var(--line2);
  overflow:hidden;padding:26px 0;background:rgba(255,255,255,.012);
}
.marquee__track{
  display:flex;align-items:center;gap:34px;white-space:nowrap;width:max-content;
  animation:marq 28s linear infinite;
}
.marquee__track span{
  font-family:'Space Grotesk',sans-serif;font-weight:700;
  font-size:clamp(1.6rem,4vw,3rem);letter-spacing:-.02em;
  color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.3);
}
.marquee__track i{color:var(--violet);font-style:normal;font-size:1.4rem}
@keyframes marq{to{transform:translateX(-33.33%)}}

/* ============================================================
   SECTIONS (shared)
   ============================================================ */
.section{max-width:var(--maxw);margin:0 auto;padding:clamp(90px,13vw,170px) clamp(20px,5vw,56px)}
.section__head{margin-bottom:clamp(48px,7vw,88px)}
.section__head h2{font-size:clamp(2.1rem,5.5vw,4rem)}

/* ---- ABOUT ---- */
.about__grid{display:grid;grid-template-columns:1fr;gap:clamp(40px,6vw,72px)}
.about__lead{font-size:clamp(1.25rem,2.6vw,1.9rem);line-height:1.55;font-weight:500;max-width:900px;letter-spacing:-.025em}
.about__lead b{color:var(--violet);font-weight:600}
.about__cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.mini{
  border:1px solid var(--line);border-radius:20px;padding:32px 28px;
  background:var(--card);transition:transform .4s var(--ease),border-color .4s,background .4s;
}
.mini:hover{transform:translateY(-4px);border-color:rgba(155,123,255,.4);background:rgba(155,123,255,.05)}
.mini h3{font-size:1.22rem;margin-bottom:12px;font-weight:600}
.mini p{color:var(--muted);font-size:.96rem;line-height:1.65}

/* ---- WORK / APPS ---- */
.work__list{display:flex;flex-direction:column;gap:28px}
.app{
  display:grid;grid-template-columns:280px 1fr;gap:0;
  border:1px solid var(--line);border-radius:26px;overflow:hidden;
  background:var(--card);position:relative;
  transition:transform .5s var(--ease),border-color .5s;
}
.app::before{
  content:"";position:absolute;inset:0;border-radius:26px;padding:1px;
  background:linear-gradient(130deg,color-mix(in srgb,var(--accent) 55%,transparent),transparent 45%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  opacity:0;transition:opacity .5s;pointer-events:none;
}
.app:hover{transform:translateY(-5px);border-color:transparent}
.app:hover::before{opacity:1}
.app__media{
  position:relative;display:flex;align-items:center;justify-content:center;
  border-right:1px solid var(--line);background:
    radial-gradient(120% 120% at 50% 30%,color-mix(in srgb,var(--accent) 16%,transparent),transparent 60%),
    linear-gradient(160deg,rgba(255,255,255,.03),transparent);
  min-height:230px;overflow:hidden;
}
.app__glow{
  position:absolute;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,color-mix(in srgb,var(--accent) 40%,transparent),transparent 65%);
  filter:blur(30px);opacity:.6;transition:opacity .5s,transform .6s var(--ease);
}
.app:hover .app__glow{opacity:.95;transform:scale(1.15)}
.app__icon{
  width:116px;height:116px;position:relative;z-index:1;
  border-radius:26px;object-fit:cover;display:block;
  box-shadow:0 12px 36px -8px color-mix(in srgb,var(--accent) 60%,transparent),
             inset 0 0 0 1px rgba(255,255,255,.09);
  transition:transform .6s var(--ease),box-shadow .6s var(--ease);
}
.app:hover .app__icon{
  transform:scale(1.06) rotate(-2deg);
  box-shadow:0 18px 46px -8px color-mix(in srgb,var(--accent) 75%,transparent),
             inset 0 0 0 1px rgba(255,255,255,.14);
}
.app__body{padding:clamp(28px,3.5vw,44px)}
.app__top{display:flex;align-items:center;gap:16px;margin-bottom:18px}
.app__no{font-family:'Space Grotesk',sans-serif;color:var(--accent);font-weight:600;letter-spacing:.05em}
.app__tag{
  font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);
  border:1px solid var(--line);padding:5px 12px;border-radius:100px;
}
.app__name{
  font-size:clamp(1.8rem,3.4vw,2.6rem);font-weight:600;margin-bottom:16px;
  display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;
}
.app__name span{
  font-family:'Space Grotesk',sans-serif;font-size:.9rem;letter-spacing:.22em;
  color:var(--faint);font-weight:500;
}
.app__desc{color:var(--muted);font-size:1.02rem;line-height:1.75;max-width:640px;margin-bottom:24px}
.app__desc b{color:var(--ink);font-weight:600}
.app__stack{list-style:none;display:flex;flex-wrap:wrap;gap:9px;margin-bottom:26px}
.app__stack li{
  font-family:'Space Grotesk',sans-serif;font-size:.8rem;color:var(--muted);
  padding:6px 13px;border-radius:8px;background:rgba(255,255,255,.045);
  border:1px solid var(--line2);letter-spacing:.01em;
}
.app__links{display:flex;align-items:center;gap:20px}
.app__links a{
  color:var(--accent);font-weight:600;font-size:.95rem;
  border-bottom:1px solid color-mix(in srgb,var(--accent) 40%,transparent);
  padding-bottom:2px;transition:opacity .25s;
}
.app__links a:hover{opacity:.7}
.app__soon{
  font-size:.82rem;letter-spacing:.08em;color:var(--faint);
  border:1px dashed var(--line);padding:6px 14px;border-radius:100px;
}

/* ---- CAPABILITIES ---- */
.caps__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:44px}
.cap{
  border:1px solid var(--line);border-radius:20px;padding:34px 26px;
  background:var(--card);transition:transform .4s var(--ease),border-color .4s,background .4s;
  min-height:230px;display:flex;flex-direction:column;
}
.cap:hover{transform:translateY(-5px);border-color:rgba(155,123,255,.35);background:rgba(155,123,255,.045)}
.cap__num{font-family:'Space Grotesk',sans-serif;font-size:.9rem;color:var(--violet);letter-spacing:.1em}
.cap h3{font-size:1.3rem;margin:24px 0 12px;font-weight:600}
.cap p{color:var(--muted);font-size:.93rem;line-height:1.65}
/* ---- CONTACT ---- */
.contact{text-align:center}
.contact__inner{max-width:760px;margin:0 auto}
.contact h2{font-size:clamp(2.3rem,6vw,4.4rem);margin:18px 0 24px}
.contact__sub{color:var(--muted);font-size:1.1rem;margin-bottom:44px;line-height:1.7}
.contact__phone{margin-top:22px;color:var(--faint);font-family:'Space Grotesk',sans-serif;letter-spacing:.05em}

/* ============================================================
   FOOTER
   ============================================================ */
.footer{
  border-top:1px solid var(--line);padding:clamp(56px,7vw,90px) 0 40px;
  background:linear-gradient(180deg,transparent,rgba(155,123,255,.03));
  max-width:100%;
}
.footer__top{
  max-width:var(--maxw);margin:0 auto;display:grid;
  grid-template-columns:1.4fr 2fr;gap:48px;
  padding:0 clamp(20px,5vw,56px) 56px;
  border-bottom:1px solid var(--line2);
}
.footer__word{
  font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:2rem;
  letter-spacing:.1em;margin-bottom:16px;
  background:linear-gradient(100deg,var(--violet),var(--cyan));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.footer__brand p{color:var(--muted);max-width:320px;line-height:1.7}
.footer__nav{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.footer__nav h4{
  font-size:.76rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--faint);margin-bottom:18px;font-weight:600;
}
.footer__nav a{display:block;color:var(--muted);font-size:.95rem;margin-bottom:12px;transition:color .25s}
.footer__nav a:hover{color:var(--ink)}
.footer__legal{max-width:var(--maxw);margin:0 auto;padding:40px clamp(20px,5vw,56px)}
.footer__legal dl{display:grid;grid-template-columns:repeat(3,1fr);gap:22px 40px}
.footer__legal dt{font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin-bottom:6px}
.footer__legal dd{color:var(--muted);font-size:.95rem;font-weight:500}
.footer__bottom{
  max-width:var(--maxw);margin:0 auto;
  padding:28px clamp(20px,5vw,56px) 0;border-top:1px solid var(--line2);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:.85rem;color:var(--faint);
}
.footer__mark{font-family:'Space Grotesk',sans-serif;letter-spacing:.02em}

/* ============================================================
   REVEAL ANIMATION
   ============================================================ */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:900px){
  /* orb centers on narrow screens — dim it and darken the hero so copy stays legible */
  #bg-canvas{opacity:.5}
  .hero::before{
    background:linear-gradient(180deg,var(--bg) 6%,rgba(5,6,10,.55) 42%,rgba(5,6,10,.82) 100%);
  }
  .nav__links a:not(.nav__cta){display:none}
  .about__cards{grid-template-columns:1fr}
  .caps__grid{grid-template-columns:repeat(2,1fr)}
  .app{grid-template-columns:1fr}
  .app__media{border-right:none;border-bottom:1px solid var(--line);min-height:200px}
  .footer__top{grid-template-columns:1fr;gap:40px}
  .footer__legal dl{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:560px){
  .hero{padding-top:100px}
  .hero__meta{gap:24px}
  .caps__grid{grid-template-columns:1fr}
  .footer__nav{grid-template-columns:1fr;gap:28px}
  .footer__legal dl{grid-template-columns:1fr}
  .footer__bottom{flex-direction:column}
  .app__name{font-size:1.6rem}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}