/* unchartedAli — dark, minimal, cinematic portfolio */

:root{
  --bg:#08080a;
  --bg-elev:#0d0d10;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.20);
  --fg:#f2f2f0;
  --fg-dim:#a3a3a0;
  --fg-faint:#6a6a68;
  --ease:cubic-bezier(.16,.84,.28,1);
  --pad:clamp(20px,5vw,88px);
  --maxw:1360px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%; scroll-behavior:smooth; overflow-x:clip}
body{
  margin:0;
  background:var(--bg);
  color:var(--fg);
  font-family:"Satoshi","Helvetica Neue",Arial,sans-serif;
  font-weight:400;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
:focus-visible{outline:1px solid var(--fg);outline-offset:4px}
::selection{background:#f2f2f0;color:#08080a}

.jp{font-family:"Noto Sans JP","Satoshi",sans-serif;font-weight:300}

/* ---------- global grain ---------- */
.grain{
  position:fixed;inset:-50%;z-index:100;pointer-events:none;
  opacity:.035;mix-blend-mode:screen;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grainShift 6s steps(6) infinite;
}
@keyframes grainShift{
  0%{transform:translate(0,0)}25%{transform:translate(-2%,1%)}
  50%{transform:translate(1%,-2%)}75%{transform:translate(-1%,-1%)}
  100%{transform:translate(0,0)}
}

/* ---------- nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;
  padding:clamp(16px,2.5vh,22px) var(--pad);
  transition:background 600ms var(--ease),border-color 600ms var(--ease),padding 400ms var(--ease),backdrop-filter 600ms var(--ease);
  border-bottom:1px solid transparent;
}
.nav.is-stuck{
  background:rgba(8,8,10,.85);
  backdrop-filter:blur(20px) saturate(180%);
  -webkit-backdrop-filter:blur(20px) saturate(180%);
  border-bottom-color:rgba(255,255,255,.12);
  padding-top:clamp(10px,1.5vh,14px);
  padding-bottom:clamp(10px,1.5vh,14px);
  box-shadow:0 4px 30px rgba(0,0,0,.4);
}
.nav.is-hidden{transform:translateY(-102%)}
.nav{transform:translateY(0)}

/* scroll progress bar */
.nav-progress{
  position:absolute;bottom:-1px;left:0;height:2px;width:0;
  background:linear-gradient(90deg,transparent,var(--fg-dim),var(--fg));
  transition:width 100ms linear;
  opacity:.6;
}

/* brand with micro-interactions */
.brand{display:flex;align-items:center;gap:10px;transition:transform 500ms var(--ease),opacity 300ms ease}
.brand:hover{transform:scale(1.03)}
.brand:active{transform:scale(.98)}
.brand-mark{color:var(--fg);opacity:.9;transition:transform 600ms var(--ease)}
.brand:hover .brand-mark{transform:rotate(-8deg)}
.brand-text{font-size:15px;letter-spacing:.02em;font-weight:700}
.brand-accent{font-weight:400;color:var(--fg-dim)}

/* nav links with refined interactions */
.nav-links{display:flex;gap:clamp(22px,2.5vw,42px);align-items:center}
.nav-right{margin-left:auto}
.nav-links a{
  font-size:clamp(10px,1vw,11px);
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--fg-dim);
  position:relative;
  padding:6px 0;
  transition:color 350ms var(--ease),transform 350ms var(--ease);
}
.nav-links a::before{
  content:"";position:absolute;left:50%;bottom:-2px;height:1px;width:0;
  background:var(--fg);transition:width 450ms var(--ease),left 450ms var(--ease);
}
.nav-links a:hover{color:var(--fg);transform:translateY(-1px)}
.nav-links a:hover::before{width:100%;left:0}
.nav-links a.is-active{color:var(--fg)}
.nav-links a.is-active::before{width:100%;left:0;background:var(--fg-dim)}

/* ---------- Astra hero ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:flex-end;overflow:hidden}
.hero-media{position:absolute;inset:0}
#spiral{width:100%;height:100%;display:block}
.hero-vignette{position:absolute;inset:0;background:radial-gradient(ellipse 90% 60% at 50% 42%,transparent 30%,rgba(8,8,10,.55) 78%),linear-gradient(to top,rgba(8,8,10,.96) 4%,rgba(8,8,10,.25) 34%,transparent 60%),linear-gradient(to bottom,rgba(8,8,10,.6) 0%,transparent 22%)}
.hero-content{position:relative;z-index:2;padding-bottom:15vh;width:100%}
.hero-title{margin:0;font-weight:900;letter-spacing:-.045em;line-height:.92;font-size:clamp(46px,8.4vw,104px);white-space:nowrap}
.hero-title .thin{font-weight:300;color:var(--fg-dim);letter-spacing:-.03em}
.hero-sub{margin:clamp(1.5rem,3vw,2.5rem) 0;font-size:clamp(15px,1.5vw,19px);line-height:1.6;max-width:30rem;color:rgba(242,242,240,.55)}
.hero-actions{display:flex;gap:12px;margin-top:40px;flex-wrap:wrap}
.hero-scroll{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--fg-faint);font-size:10.5px;letter-spacing:.22em;text-transform:uppercase;z-index:2}
.hero-scroll i{width:1px;height:34px;background:linear-gradient(to bottom,var(--fg-faint),transparent);display:block}

/* ---------- Astra nav structure additions ---------- */
.nav-inner{display:flex;align-items:center;gap:28px;width:100%}
.nav-cta{display:flex;align-items:center;gap:18px;margin-left:auto}
.nav-login{font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--fg-dim);padding:6px 0;position:relative}
.nav-login:hover{color:var(--fg)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:999px;font-weight:500;font-size:14px;border:1px solid transparent;transition:all .3s var(--ease);position:relative;overflow:hidden}
.btn-solid{background:var(--fg);color:var(--bg)}
.btn-solid:hover{background:#d4d4d0;transform:translateY(-2px);box-shadow:0 8px 25px rgba(242,242,240,.15)}
.btn-ghost{border-color:var(--line-strong);color:var(--fg);background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:var(--fg);transform:translateY(-2px)}
.btn-sm{padding:7px 16px;font-size:12px;letter-spacing:.12em;text-transform:uppercase}
.btn-arrow{display:inline-block;transition:transform .3s var(--ease)}
.btn:hover .btn-arrow{transform:translateX(5px)}
.btn-anim::before{content:"";position:absolute;top:50%;left:50%;width:0;height:0;border-radius:50%;background:rgba(255,255,255,.15);transform:translate(-50%,-50%);transition:width .6s var(--ease),height .6s var(--ease)}
.btn-anim:hover::before{width:300px;height:300px}
.btn-anim span,.btn-anim .btn-arrow{position:relative;z-index:1}
.dd{position:relative}
.dd-btn{padding:7px 13px;border-radius:999px;font-size:clamp(10px,1vw,11px);letter-spacing:.18em;text-transform:uppercase;color:var(--fg-dim);font-weight:400;display:inline-flex;align-items:center;gap:5px;transition:color .15s ease,background .15s ease}
.dd-btn:hover{color:var(--fg);background:rgba(255,255,255,.05)}
.chev{transition:transform .2s ease}
.dd.open .chev{transform:rotate(180deg)}
.dd-menu{position:absolute;top:calc(100% + 10px);left:0;min-width:180px;padding:7px;background:var(--bg-elev);border:1px solid var(--line);border-radius:13px;box-shadow:0 18px 48px rgba(0,0,0,.55);opacity:0;transform:translateY(-6px);pointer-events:none;transition:opacity .18s ease,transform .18s ease;z-index:80}
.dd.open .dd-menu{opacity:1;transform:translateY(0);pointer-events:auto}
.dd-menu a{display:block;padding:9px 12px;border-radius:9px;font-size:13px;color:var(--fg-dim);text-transform:none;letter-spacing:0}
.dd-menu a:hover{background:rgba(255,255,255,.06);color:var(--fg)}
.nav-burger{display:none;flex-direction:column;justify-content:center;gap:5px;width:22px;margin-left:40px;background:none;border:0;padding:0;cursor:pointer}
.nav-burger span{height:1px;width:100%;background:var(--fg);display:block;transition:transform .25s ease,opacity .25s ease}
.nav-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(3px) rotate(45deg)}
.nav-burger[aria-expanded="true"] span:nth-child(2){transform:translateY(-3px) rotate(-45deg)}
.mobile-menu{display:none;flex-direction:column;gap:2px;padding:10px var(--pad) 20px;border-top:1px solid var(--line);background:rgba(8,8,10,.97)}
.mobile-menu a{padding:11px 4px;font-size:15px;color:var(--fg-dim);border-bottom:1px solid rgba(255,255,255,.05)}
.mobile-menu a:last-child{border-bottom:0;margin-top:8px;text-align:center}

/* ---------- layout helpers ---------- */
main{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.label{
  font-size:10px;letter-spacing:.28em;text-transform:uppercase;color:var(--fg-faint);
  margin:0 0 18px;
}
.section-title{
  margin:0;font-size:clamp(28px,4.2vw,52px);font-weight:500;letter-spacing:-.02em;line-height:1.05;
}
.section-title .jp{font-size:.4em;color:var(--fg-faint);letter-spacing:.12em;vertical-align:middle}

/* ---------- work ---------- */
.work{padding:clamp(64px,10vh,120px) 0}
.section-head{margin-bottom:clamp(36px,5vw,64px)}
.grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(18px,2.4vw,34px);
}
.project-card{border-top:1px solid var(--line);padding-top:18px}
.card-link{display:block}
.project-media{
  position:relative;overflow:hidden;aspect-ratio:4/5;background:var(--bg-elev);
  border:1px solid var(--line);
}
.project-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(115% 85% at 50% 40%,transparent 42%,rgba(8,8,10,.6) 100%);
}
.project-media img{
  width:100%;height:100%;object-fit:cover;
  filter:grayscale(100%) contrast(1.08) brightness(.86);
  transition:transform 800ms var(--ease),filter 500ms ease;
}
.card-link:hover .project-media img,
.card-link:focus-visible .project-media img{
  transform:scale(1.04);
  filter:grayscale(100%) contrast(1.14) brightness(.98);
}
.project-info{padding-top:20px}
.card-index{margin:0;font-size:10px;letter-spacing:.24em;color:var(--fg-faint)}
.card-title{
  margin:8px 0 2px;font-size:clamp(20px,2.1vw,26px);font-weight:500;letter-spacing:.02em;
  transition:transform 450ms var(--ease);
}
.card-jp{margin:0;font-size:12px;letter-spacing:.14em;color:var(--fg-faint)}
.card-desc{margin:14px 0 0;font-size:14px;color:var(--fg-dim);max-width:34ch;line-height:1.6}
.card-meta{
  display:flex;align-items:center;justify-content:space-between;
  margin:22px 0 0;padding-top:14px;border-top:1px solid var(--line);
  font-size:10px;letter-spacing:.24em;text-transform:uppercase;color:var(--fg-faint);
}
.card-meta .arrow{font-size:13px;transition:transform 450ms var(--ease),color 450ms ease}
.card-link:hover .card-title,
.card-link:focus-visible .card-title{transform:translateX(4px)}
.card-link:hover .arrow,
.card-link:focus-visible .arrow{transform:translateX(6px);color:var(--fg)}

/* ---------- about ---------- */
.about{padding:clamp(64px,10vh,120px) 0;border-top:1px solid var(--line)}
.about-grid{
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:clamp(28px,5vw,72px);align-items:start;
}
.about-lead{
  margin:0;font-size:clamp(19px,2.4vw,31px);line-height:1.45;letter-spacing:-.015em;font-weight:400;
}
.about-facts{margin:0;display:grid;gap:16px}
.about-facts div{display:grid;grid-template-columns:112px 1fr;gap:14px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.about-facts dt{font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:var(--fg-faint);padding-top:3px}
.about-facts dd{margin:0;font-size:14px;color:var(--fg-dim)}

/* ---------- contact ---------- */
.contact{padding:clamp(72px,12vh,150px) 0;border-top:1px solid var(--line)}
.contact-title{
  margin:0;font-size:clamp(30px,5.4vw,66px);font-weight:400;letter-spacing:-.035em;line-height:1.06;
}
.contact-mail{
  display:inline-block;margin-top:36px;font-size:clamp(14px,1.6vw,18px);
  letter-spacing:.04em;color:var(--fg-dim);border-bottom:1px solid var(--line-strong);
  padding-bottom:4px;transition:color 350ms ease,border-color 350ms ease;
}
.contact-mail:hover{color:var(--fg);border-color:var(--fg)}

/* ---------- footer ---------- */
.footer{
  max-width:var(--maxw);margin:0 auto;padding:26px var(--pad) 40px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  border-top:1px solid var(--line);
  font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:var(--fg-faint);
}
.footer .jp{letter-spacing:.12em;text-transform:none}
.footer a:hover{color:var(--fg)}
.footer-social{display:flex;gap:18px}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(30px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.reveal:nth-child(1){transition-delay:.1s}
.reveal:nth-child(2){transition-delay:.2s}
.reveal:nth-child(3){transition-delay:.3s}
.reveal:nth-child(4){transition-delay:.4s}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(20px,3vw,30px)}
  .project-card:nth-child(3){grid-column:1/-1}
  .project-card:nth-child(3) .project-media{aspect-ratio:16/9}
  .about-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  .nav-links,.nav-cta{display:none}
  .nav-burger{display:flex}
  .mobile-menu.open{display:flex}
  .hero-title{font-size:clamp(36px,10vw,52px);white-space:normal}
  .hero-content{padding-bottom:19vh}
  .cta{margin-top:32px;width:100%;justify-content:center}
  .grid{grid-template-columns:1fr}
  .about-facts div{grid-template-columns:1fr;gap:4px}
  .footer{justify-content:flex-start;gap:12px}
  .nav{padding:14px var(--pad)}
  .nav.is-stuck{padding:10px var(--pad)}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none !important;transition-duration:1ms !important}
  .reveal{opacity:1;transform:none}
  .grain{animation:none}
}

/* ---------- project detail pages (void.html / ovrdrv.html / lucid.html) ---------- */
.project-detail{padding:clamp(120px,17vh,190px) 0 clamp(72px,12vh,140px)}
.section-head.with-back{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.back-link{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--fg-dim);transition:color 300ms ease}
.back-link:hover{color:var(--fg)}

.project-detail-hero{margin:22px 0 clamp(28px,4vw,44px)}
.project-detail-lead{margin:18px 0 0;max-width:46ch;font-size:clamp(16px,1.8vw,20px);color:var(--fg-dim);line-height:1.6}

.project-detail-media{
  position:relative;margin:0 0 clamp(48px,7vw,84px);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-elev);aspect-ratio:16/9;
}
.project-detail-media img{
  width:100%;height:100%;object-fit:cover;
  filter:grayscale(100%) contrast(1.08) brightness(.88);
}

.project-detail-body{
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:clamp(28px,5vw,72px);align-items:start;
  padding-bottom:clamp(56px,8vw,96px);border-bottom:1px solid var(--line);
}

.project-nav{
  display:flex;align-items:center;justify-content:space-between;
  padding-top:clamp(28px,4vw,44px);
  font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--fg-dim);
}
.project-nav-link{transition:color 300ms ease}
.project-nav-link:hover{color:var(--fg)}

@media (max-width:1024px){
  .project-detail-body{grid-template-columns:1fr}
}
@media (max-width:640px){
  .project-detail-media{aspect-ratio:4/3}
}