/* =========================================================================
   Saving Astronomy in Ukraine — styles
   Deep-sky landing page. Design identity: constellation of observatory
   cities, brass/starlight gold accent, Fraunces + Instrument Sans + Space
   Mono. Fonts are self-hosted (see fonts.css); Cyrillic falls through to
   Playfair Display / Manrope / JetBrains Mono for the Ukrainian version.
   ========================================================================= */

:root{
  --void:#070B16;        /* deep sky */
  --ink:#0B1120;         /* panel */
  --ink-2:#0E1526;       /* raised panel */
  --star:#F3EFE6;        /* starlight / primary text */
  --muted:#8A93A9;       /* cool grey / secondary */
  --dim:#5B6379;         /* tertiary */
  --gold:#E0B23C;        /* brass / starlight accent */
  --gold-soft:#caa04f;
  --azure:#5688C0;       /* deep-sky blue, secondary */
  --line:rgba(243,239,230,.12);
  --line-soft:rgba(243,239,230,.07);
  --maxw:1180px;

  /* font stacks: Latin identity fonts first, Cyrillic-capable fallbacks
     next (used automatically for Ukrainian glyphs), then system fonts */
  --f-display:"Fraunces","Playfair Display",Georgia,"Times New Roman",serif;
  --f-body:"Instrument Sans","Manrope",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --f-mono:"Space Mono","JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--void);
  color:var(--star);
  font-family:var(--f-body);
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}

/* visible keyboard focus for accessibility */
a:focus-visible,button:focus-visible{
  outline:2px solid var(--gold);
  outline-offset:3px;
  border-radius:2px;
}
:focus:not(:focus-visible){outline:none}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}

.eyebrow{
  font-family:var(--f-mono);
  font-size:12px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--gold-soft);
}

/* ---------- top bar ---------- */
header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  backdrop-filter:blur(10px);
  background:linear-gradient(to bottom, rgba(7,11,22,.85), rgba(7,11,22,0));
  border-bottom:1px solid transparent;
  transition:border-color .3s, background .3s;
}
header.scrolled{
  background:rgba(7,11,22,.9);
  border-bottom:1px solid var(--line-soft);
}
.bar{display:flex;align-items:center;justify-content:space-between;height:66px;gap:18px}
.mark{display:flex;align-items:center;gap:11px;font-weight:600;letter-spacing:.01em}
.mark svg{width:22px;height:22px;flex:none}
.mark b{font-weight:600}
.mark span{color:var(--muted);font-weight:400}
.bar-right{display:flex;align-items:center;gap:26px}
nav.links{display:flex;gap:30px}
nav.links a{
  font-family:var(--f-mono);
  font-size:12.5px;letter-spacing:.06em;color:var(--muted);
  transition:color .2s;
}
nav.links a:hover{color:var(--star)}
.menu-btn{display:none;background:none;border:0;color:var(--star);cursor:pointer}

/* language toggle */
.lang{display:flex;align-items:center;gap:2px;font-family:var(--f-mono)}
.lang button{
  background:none;border:0;cursor:pointer;
  font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;
  color:var(--dim);padding:4px 6px;transition:color .2s;
}
.lang button:hover{color:var(--star)}
.lang button[aria-pressed="true"]{color:var(--gold)}
.lang .sep{color:var(--line);}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden}
#starfield{position:absolute;inset:0;z-index:0}
.hero-glow{
  position:absolute;z-index:0;inset:0;
  background:
    radial-gradient(1100px 700px at 72% 42%, rgba(86,136,192,.16), transparent 60%),
    radial-gradient(900px 600px at 20% 80%, rgba(224,178,60,.07), transparent 55%);
  pointer-events:none;
}
.constellation{
  position:absolute;z-index:1;right:-4%;top:50%;transform:translateY(-50%);
  width:min(58vw,720px);opacity:.92;pointer-events:none;
}
.hero .wrap{position:relative;z-index:2;width:100%}
.hero-copy{max-width:640px;padding:120px 0 80px}
.hero h1{
  font-family:var(--f-display);
  font-weight:500;
  font-size:clamp(2.9rem,6.4vw,5.3rem);
  line-height:.98;
  letter-spacing:-.015em;
  margin:22px 0 0;
}
.hero h1 em{font-style:italic;color:var(--gold)}
.hero .lede{
  font-size:clamp(1.05rem,1.6vw,1.28rem);
  color:var(--muted);
  max-width:33em;
  margin-top:26px;
}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}
.btn{
  font-family:var(--f-body);
  font-weight:600;font-size:15px;
  padding:14px 24px;border-radius:2px;
  display:inline-flex;align-items:center;gap:10px;
  border:1px solid transparent;cursor:pointer;transition:.2s;
}
.btn-primary{background:var(--gold);color:#1a1305}
.btn-primary:hover{background:#eec257;transform:translateY(-1px)}
.btn-ghost{border-color:var(--line);color:var(--star)}
.btn-ghost:hover{border-color:var(--gold-soft);background:rgba(224,178,60,.06)}
.btn .arw{transition:transform .2s}
.btn:hover .arw{transform:translateX(3px)}

.scroll-cue{
  position:absolute;left:28px;bottom:26px;z-index:2;
  font-family:var(--f-mono);font-size:11px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--dim);
  display:flex;align-items:center;gap:10px;
}
.scroll-cue .ln{width:34px;height:1px;background:var(--dim);display:inline-block;animation:pulse 2.6s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.3}50%{opacity:1}}

/* ---------- field notes strip ---------- */
.notes{border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);background:var(--ink)}
.notes .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.note{padding:30px 26px;border-left:1px solid var(--line-soft)}
.note:first-child{border-left:0}
.note .k{font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-soft)}
.note .v{font-family:var(--f-display);font-size:1.55rem;font-weight:500;margin-top:8px;line-height:1.1}
.note .d{color:var(--muted);font-size:13.5px;margin-top:6px}

/* ---------- generic section ---------- */
section{padding:100px 0;position:relative}
.section-label{font-family:var(--f-mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--gold-soft);display:flex;align-items:center;gap:14px}
.section-label::before{content:"";width:26px;height:1px;background:var(--gold-soft);opacity:.6}
h2{font-family:var(--f-display);font-weight:500;font-size:clamp(2rem,3.8vw,3rem);line-height:1.05;letter-spacing:-.01em;margin:18px 0 0}

/* about */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start;margin-top:16px}
.about .lead{font-family:var(--f-display);font-size:clamp(1.4rem,2.4vw,1.9rem);line-height:1.35;font-weight:400}
.about .lead b{color:var(--gold);font-weight:500;font-style:italic}
.about .body p{color:var(--muted);margin-bottom:18px}
.about .body p:last-child{margin-bottom:0}

/* directions */
.dir-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;flex-wrap:wrap}
.dir-note{font-family:var(--f-mono);font-size:12px;color:var(--dim);max-width:26em;line-height:1.7}
.dir-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line-soft);margin-top:46px;border:1px solid var(--line-soft)}
.dir{background:var(--ink);padding:42px 40px;transition:background .3s;position:relative}
.dir:hover{background:var(--ink-2)}
.dir .glyph{width:30px;height:30px;color:var(--gold);opacity:.85}
.dir .name{font-family:var(--f-display);font-size:1.42rem;font-weight:500;margin:20px 0 12px;line-height:1.15}
.dir .desc{color:var(--muted);font-size:15.5px}
.dir .tag{font-family:var(--f-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);position:absolute;top:42px;right:40px}

/* actions */
.actions{background:var(--ink);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.act-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:60px;align-items:start;margin-top:16px}
ol.acts{list-style:none;counter-reset:a}
ol.acts li{
  counter-increment:a;display:flex;gap:20px;padding:22px 0;border-top:1px solid var(--line-soft);
}
ol.acts li:first-child{border-top:0}
ol.acts li::before{
  content:counter(a,decimal-leading-zero);
  font-family:var(--f-mono);font-size:13px;color:var(--gold-soft);
  padding-top:3px;flex:none;
}
ol.acts .txt{font-size:16px}
.act-intro .lead{font-family:var(--f-display);font-size:1.5rem;line-height:1.35;font-weight:400}
.act-intro p{color:var(--muted);margin-top:18px;font-size:15.5px}

/* contact */
.contact-card{
  background:linear-gradient(150deg,var(--ink-2),var(--ink));
  border:1px solid var(--line);border-radius:3px;
  padding:56px;display:grid;grid-template-columns:1fr 1fr;gap:54px;margin-top:16px;
  position:relative;overflow:hidden;
}
.contact-card::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;
  background:radial-gradient(circle,rgba(224,178,60,.1),transparent 68%);pointer-events:none;
}
.contact-card h2{margin-top:14px}
.contact-card .sub{color:var(--muted);margin-top:18px;max-width:30em}
.email-btn{margin-top:28px}
.people{display:flex;flex-direction:column;gap:2px}
.person{padding:18px 0;border-top:1px solid var(--line-soft);display:flex;align-items:baseline;gap:14px}
.person:first-child{border-top:0}
.person .nm{font-family:var(--f-display);font-size:1.15rem;font-weight:500}
.person .rl{font-family:var(--f-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim)}
.doors{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.door{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px 18px;border:1px solid var(--line-soft);border-radius:2px;transition:.2s}
.door:hover{border-color:var(--gold-soft);background:rgba(224,178,60,.05)}
.door .lbl{font-weight:500}
.door .meta{font-family:var(--f-mono);font-size:11px;color:var(--dim);letter-spacing:.08em;margin-left:auto}
.door .arw{color:var(--gold);transition:transform .2s}
.door:hover .arw{transform:translateX(3px)}

/* quote / footer */
.closing{text-align:center;padding:110px 0 90px}
.closing blockquote{font-family:var(--f-display);font-style:italic;font-weight:400;font-size:clamp(1.4rem,2.8vw,2.05rem);line-height:1.4;max-width:20em;margin:0 auto;color:var(--star)}
.closing cite{display:block;margin-top:24px;font-family:var(--f-mono);font-style:normal;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--dim)}

footer{border-top:1px solid var(--line-soft);padding:40px 0}
.foot{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;font-family:var(--f-mono);font-size:12px;color:var(--dim);letter-spacing:.04em}
.foot .accent{color:var(--gold-soft)}

/* constellation label type */
.cx-stars text{font-family:var(--f-mono);font-size:15px;letter-spacing:.04em;text-anchor:middle}
.cx-stars .star circle{transform-box:fill-box;transform-origin:center}
.star:not(.lost) circle{filter:drop-shadow(0 0 6px rgba(224,178,60,.6))}

/* reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .8s ease, transform .8s ease}
.reveal.in{opacity:1;transform:none}

/* responsive */
@media(max-width:900px){
  nav.links{display:none}
  header.nav-open nav.links{
    display:flex;flex-direction:column;gap:0;
    position:absolute;left:0;right:0;top:66px;
    background:rgba(7,11,22,.97);
    border-bottom:1px solid var(--line-soft);
    padding:6px 28px 16px;
  }
  header.nav-open nav.links a{padding:12px 0;font-size:14px}
  .menu-btn{display:block}
  .constellation{opacity:.32;right:-20%;width:120vw}
  .hero-copy{padding-top:130px}
  .notes .wrap{grid-template-columns:1fr 1fr}
  .note:nth-child(-n+2){border-top:0}
  .note:nth-child(odd){border-left:0}
  .note{border-top:1px solid var(--line-soft)}
  .about-grid,.act-grid,.dir-grid,.contact-card{grid-template-columns:1fr;gap:34px}
  .contact-card{padding:36px}
  .dir .tag{position:static;display:block;margin-bottom:14px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}