/* =========================================================
   ADVANT NAVIS BUSINESS PARK — Stylesheet
   Showcase edition, built to the client's reference:
   cinematic dusk hero, giant condensed display type, black
   rounded spec-card with blueprint, pill CTAs, column hairlines.
   ========================================================= */

:root{
  --night:#101318;         /* page dark */
  --night-2:#161a21;
  --panel:#0b0d11;         /* spec card black */
  --day:#f4f5f7;           /* light section */
  --day-2:#e9ebee;
  --white:#ffffff;
  --ink:#14171c;
  --text-d:#e9ecf1;        /* text on dark */
  --mut-d:rgba(233,236,241,.62);
  --mut-d2:rgba(233,236,241,.4);
  --mut-l:#5c6470;
  --mut-l2:#9aa1ab;
  --hair-d:rgba(255,255,255,.16);
  --hair-l:rgba(20,23,28,.14);
  --accent:#e8b64c;        /* warm signal, used sparingly */
  --r:18px;                /* the house radius */
  --r-pill:999px;
  --display:'Anton', Impact, sans-serif;
  --sans:'Manrope', system-ui, sans-serif;
  --ease:cubic-bezier(.22,1,.36,1);
  --maxw:1280px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  background:var(--night);
  color:var(--text-d);
  line-height:1.7;font-weight:400;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:var(--accent);color:#14171c}
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:var(--night)}
::-webkit-scrollbar-thumb{background:#2c333d;border-radius:8px}

.container{max-width:var(--maxw);margin:0 auto;padding:0 40px;width:100%}

/* ---------- Pills (the house button) ---------- */
.pill,.nav__cta{
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 24px;border-radius:var(--r-pill);
  font-size:.78rem;font-weight:700;letter-spacing:.02em;
  cursor:pointer;transition:.35s var(--ease);border:1px solid transparent;
  white-space:nowrap;font-family:var(--sans);
}
.pill svg,.nav__cta svg{width:15px;height:15px}
.nav__cta{background:var(--white);color:var(--ink)}
.nav__cta:hover{transform:translateY(-2px);box-shadow:0 14px 30px -14px rgba(0,0,0,.55)}
.pill--dark{background:var(--ink);color:var(--white)}
.pill--dark:hover{background:#000;transform:translateY(-2px)}
.pill--light{background:var(--white);color:var(--ink)}
.pill--light:hover{transform:translateY(-2px)}
.pill--line{background:transparent;border-color:var(--hair-l);color:var(--ink);padding:10px 20px;font-size:.72rem}
.pill--line:hover{border-color:var(--ink);background:var(--ink);color:#fff}
.pill--gold{background:var(--white);color:var(--ink);justify-content:center}
.pill--gold:hover{background:var(--accent)}
.pill--full{width:100%}

/* ---------- Preloader ---------- */
.preloader{
  position:fixed;inset:0;background:var(--night);z-index:9999;
  display:flex;align-items:center;justify-content:center;
  transition:opacity .8s var(--ease),visibility .8s;
}
.preloader.done{opacity:0;visibility:hidden}
.preloader__mark{
  font-family:var(--display);font-size:clamp(2rem,7vw,4.2rem);
  letter-spacing:.06em;position:relative;color:var(--white);text-transform:uppercase;
}
.preloader__mark::after{
  content:"";position:absolute;left:0;bottom:-14px;height:2px;width:0;
  background:var(--accent);animation:load 1.4s var(--ease) forwards;
}
@keyframes load{to{width:100%}}

.scroll-progress{position:fixed;top:0;left:0;height:0;width:0;z-index:-1}

/* ---------- Nav: transparent overlay, pill CTA ---------- */
.nav{
  position:fixed;top:0;left:0;width:100%;z-index:1000;
  background:transparent;border-bottom:0;
  transition:background .4s var(--ease),backdrop-filter .4s var(--ease);
}
.nav.scrolled{
  background:rgba(16,19,24,.8);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.nav__inner{
  max-width:none;padding:16px clamp(20px,3.2vw,52px);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.nav__brand{display:flex;align-items:center;z-index:2}
.nav__brand-logo{height:42px;width:auto;flex-shrink:0;transition:height .4s var(--ease);
  filter:drop-shadow(0 2px 10px rgba(0,0,0,.4))}
.nav.scrolled .nav__brand-logo{height:34px}
.nav__links{display:flex;align-items:center;gap:28px}
.nav__link{
  font-size:.78rem;font-weight:600;color:rgba(255,255,255,.75);
  transition:color .3s;position:relative;
}
.nav__link::after{content:"";position:absolute;left:0;bottom:-6px;height:2px;width:0;border-radius:2px;
  background:var(--white);transition:width .3s var(--ease)}
.nav__link:hover{color:#fff}
.nav__link:hover::after{width:100%}
.nav__right{display:flex;align-items:center;gap:14px;z-index:2}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.nav__toggle span{width:24px;height:2px;background:#fff;border-radius:2px;transition:.4s var(--ease)}

/* ---------- HERO ---------- */
.hero{
  position:relative;min-height:100vh;min-height:100svh;
  display:flex;flex-direction:column;overflow:hidden;background:var(--night);
}
.hero__media{position:absolute;inset:0}
.hero__slide{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:0;transition:opacity 1.6s var(--ease);transform:scale(1.05);
}
.hero__slide.active{opacity:1;animation:kenburns 24s ease-out forwards}
@keyframes kenburns{to{transform:scale(1)}}
/* dusk grade: cool blue wash + vignette, like the reference photograph */
.hero__scrim{
  position:absolute;inset:0;
  background:
    linear-gradient(200deg,rgba(21,32,54,.55) 0%,rgba(16,19,24,.15) 45%,rgba(10,12,16,.72) 100%),
    linear-gradient(90deg,rgba(10,12,16,.55) 0%,rgba(10,12,16,0) 55%);
}
/* vertical hairline columns over the photo */
.hero__columns{
  position:absolute;inset:0;pointer-events:none;
  display:grid;grid-template-columns:repeat(5,1fr);
}
.hero__columns i{border-right:1px solid rgba(255,255,255,.1)}
.hero__inner{
  position:relative;z-index:3;flex:1;width:100%;
  padding:112px clamp(20px,3.2vw,52px) 38px;
  display:flex;flex-direction:column;
}
.hero__grid{
  flex:1;display:grid;grid-template-columns:1.12fr .88fr;
  gap:clamp(30px,4vw,84px);align-items:end;
}
.hero__left{display:flex;flex-direction:column;height:100%}
.hero__title{
  font-family:var(--display);font-weight:400;
  text-transform:uppercase;color:var(--white);
  font-size:clamp(2.6rem,5.4vw,5rem);line-height:1.02;letter-spacing:.012em;
  max-width:14ch;margin-bottom:30px;
  text-shadow:0 6px 50px rgba(0,0,0,.45);
}
.hero__line{display:block}
.hero__title .char{display:inline-block;opacity:0;transform:translateY(26px);
  transition:opacity .55s var(--ease),transform .55s var(--ease)}
.hero__title .char.in{opacity:1;transform:none}
.hero__title .word{display:inline-block;white-space:nowrap}


/* bottom-right mission note */
.hero__note{
  position:absolute;right:clamp(20px,3.2vw,52px);bottom:46px;
  width:min(360px,80vw);display:flex;gap:14px;align-items:flex-end;
}
.hero__note p{font-size:.8rem;line-height:1.65;color:rgba(255,255,255,.82)}
.hero__note img{
  width:86px;height:86px;object-fit:cover;border-radius:14px;flex-shrink:0;
  border:1px solid rgba(255,255,255,.25);
}

/* fade-in cascade */
.fade-in{opacity:0;transition:opacity 1.1s var(--ease)}
.fade-in.show{opacity:1}

/* ---------- Content blocks ---------- */
.block{background:var(--day);color:var(--ink);padding:110px 0;position:relative}
.block--tint{background:var(--day-2)}
.block--dark{background:var(--night);color:var(--text-d)}
.block__head{margin-bottom:56px}
.block__kicker{
  display:inline-block;font-size:.68rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--mut-l2);margin-bottom:16px;
  border:1px solid var(--hair-l);border-radius:var(--r-pill);padding:6px 14px;
}
.block--dark .block__kicker{color:var(--mut-d);border-color:var(--hair-d)}
.block__title{
  font-family:var(--display);font-weight:400;text-transform:uppercase;
  font-size:clamp(2rem,4.4vw,3.6rem);line-height:1.04;letter-spacing:.012em;
  color:var(--ink);
}
.block--dark .block__title{color:var(--white)}
.block p{color:var(--mut-l);font-size:1rem}
.block--dark p{color:var(--mut-d)}

/* stats row */
.stats4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:72px}
.stats4 .stat{
  background:var(--white);border-radius:var(--r);padding:26px 24px;
  border:1px solid var(--hair-l);
}
.stat__num{
  font-family:var(--display);font-size:clamp(1.8rem,3vw,2.6rem);color:var(--ink);
  display:block;line-height:1;letter-spacing:.01em;
}
.stats4 .stat p{font-size:.76rem;color:var(--mut-l);margin-top:10px;font-weight:600}

/* showcase split */
.showcase__grid{display:grid;grid-template-columns:1fr 1.15fr;gap:64px;align-items:center}
.showcase__text p{margin-bottom:18px;font-size:1.02rem;line-height:1.8}
.showcase__text strong{color:var(--ink);font-weight:700}
.showcase__text .pill{margin-top:10px}
.showcase__img img{border-radius:var(--r);width:100%;height:460px;object-fit:cover}
.showcase__img figcaption{font-size:.74rem;color:var(--mut-l2);margin-top:10px;font-weight:600}

/* techsheet: dark ledger rows */
.techsheet{border-top:1px solid var(--hair-d)}
.block:not(.block--dark) .techsheet{border-top-color:var(--hair-l)}
.techsheet__row{
  display:flex;justify-content:space-between;align-items:baseline;gap:28px;
  padding:20px 4px;border-bottom:1px solid var(--hair-d);
  transition:padding .35s var(--ease);
}
.techsheet__row:hover{padding-left:16px}
.techsheet__row span{font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--mut-d2)}
.techsheet__row b{font-size:1rem;font-weight:600;color:var(--text-d);text-align:right}
.techsheet__row b a{border-bottom:1px solid var(--hair-d)}
.techsheet__row b a:hover{color:var(--accent);border-bottom-color:var(--accent)}
.block--dark .pill--light{margin-top:36px}

/* logos */
.logos{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:34px;
  background:var(--white);border:1px solid var(--hair-l);border-radius:var(--r);
  padding:38px 44px;
}
.logos img{
  height:30px;width:auto;object-fit:contain;
  filter:grayscale(1);opacity:.55;transition:.35s var(--ease);
}
.logos img:hover{filter:none;opacity:1}

/* formats: 5 cards balanced as 3 over 2 on a 6-col grid */
.formats{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.format{
  grid-column:span 2;
  background:var(--white);border:1px solid var(--hair-l);border-radius:var(--r);
  padding:30px 28px;transition:.35s var(--ease);
}
.format:hover{transform:translateY(-4px);box-shadow:0 30px 50px -34px rgba(20,23,28,.4)}
.format h3{font-family:var(--sans);font-size:1.02rem;font-weight:800;color:var(--ink);margin-bottom:6px}
.format p{font-size:.86rem;margin-bottom:18px}
.formats .format:nth-child(4),.formats .format:nth-child(5){grid-column:span 3}

/* gallery plates */
.plates{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.plates figure{position:relative;border-radius:var(--r);overflow:hidden}
.plates img{width:100%;height:340px;object-fit:cover;transition:transform .6s var(--ease)}
.plates figure:hover img{transform:scale(1.04)}
.plates figcaption{
  position:absolute;left:16px;bottom:14px;
  background:rgba(11,13,17,.78);color:#fff;border-radius:var(--r-pill);
  padding:8px 16px;font-size:.72rem;font-weight:700;
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}

/* charter */
.charter{display:grid;grid-template-columns:1fr 1.1fr;gap:64px;align-items:start}
.charter__text p{font-size:1.02rem;line-height:1.8;margin-bottom:26px}
.charter__contacts{list-style:none}
.charter__contacts li{padding:14px 0;border-bottom:1px solid var(--hair-l);font-size:.98rem;color:var(--ink)}
.charter__contacts span{
  display:block;font-size:.64rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--mut-l2);margin-bottom:4px;
}
.charter__contacts a:hover{color:var(--accent)}
.charter__panel{
  background:var(--panel);border-radius:0;padding:36px 32px 26px;
  box-shadow:0 50px 100px -50px rgba(11,13,17,.7);
}
.charter__panel .pill{border-radius:0}
.charter__panel--hero{
  align-self:start;
  background:rgba(11,13,17,.62);
  backdrop-filter:blur(20px) saturate(1.15);-webkit-backdrop-filter:blur(20px) saturate(1.15);
  border:1px solid rgba(255,255,255,.14);
  padding:28px 26px 18px;
  box-shadow:0 50px 110px -40px rgba(0,0,0,.85),inset 0 1px 0 rgba(255,255,255,.08);
}
.charter__panel--hero h3{font-family:var(--sans);font-weight:800;font-size:1.24rem;color:var(--white);margin-bottom:4px}
.charter__panel--hero .panelsub{font-size:.82rem;color:var(--mut-d);margin-bottom:16px}
.charter__panel--hero .field{margin-bottom:11px}
.charter--contacts{grid-template-columns:1.2fr .8fr}

/* fields (dark panel) */
.field{position:relative;margin-bottom:14px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field input,.field textarea,.field select{
  width:100%;padding:22px 16px 9px;border:1px solid var(--hair-d);
  background:rgba(255,255,255,.05);
  font-family:var(--sans);font-size:.92rem;color:var(--text-d);border-radius:0;
  transition:border .3s,background .3s;
}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:rgba(255,255,255,.55);background:rgba(255,255,255,.09);
}
.field input::placeholder{color:transparent}
.field label{
  position:absolute;left:16px;top:15px;color:var(--mut-d2);font-size:.88rem;pointer-events:none;
  transition:.25s var(--ease);
}
.field input:focus+label,.field input:not(:placeholder-shown)+label{
  top:6px;font-size:.56rem;letter-spacing:.12em;text-transform:uppercase;font-weight:700;color:var(--mut-d);
}
.field select{color:var(--mut-d);appearance:none;padding:15px 16px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23e9ecf1' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 16px center}
.field select option{background:var(--panel);color:var(--text-d)}
.contact__note{margin-top:12px;font-size:.86rem;text-align:center;color:var(--mut-d)}
.contact__note.ok{color:#9fd6a8}
.contact__note.err{color:#f0977d}
.field--hidden{display:none}

/* ---------- Footer ---------- */
.footer{background:var(--night);color:var(--mut-d);padding:70px 0 40px;border-top:1px solid var(--hair-d)}
.footer__inner{display:flex;flex-direction:column;align-items:center;text-align:center;gap:16px}
.footer__inner img{height:44px;width:auto}
.footer__inner p{font-size:.9rem;line-height:1.8}
.footer__inner a{border-bottom:1px solid var(--hair-d);transition:.3s}
.footer__inner a:hover{color:var(--white)}
.footer__legal{font-size:.72rem;color:var(--mut-d2)}

/* ---------- Back to top ---------- */
.to-top{
  position:fixed;bottom:92px;right:24px;width:44px;height:44px;border-radius:50%;
  background:rgba(16,19,24,.85);color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:1rem;z-index:850;opacity:0;visibility:hidden;transform:translateY(12px);
  transition:.4s var(--ease);border:1px solid var(--hair-d);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--white);color:var(--ink)}

/* ---------- Chat: the Stellar look, opened from the header pill ---------- */
.nav__cta--chat{background:#c2a06b;color:#1a1206}
.nav__cta--chat:hover{background:#a8854f;color:#1a1206}
.nav__cta--chat[aria-expanded="true"]{background:#0e1014;color:#f6f4ef}
.chat{position:fixed;top:86px;right:clamp(20px,3.2vw,52px);z-index:1200}
.chat__panel{
  position:absolute;top:0;right:0;width:370px;max-width:calc(100vw - 36px);
  background:#f6f4ef;color:#0e1014;
  padding:26px 22px 18px;border-radius:6px;border:1px solid rgba(14,16,20,.12);
  box-shadow:0 40px 80px -30px rgba(14,16,20,.55);
  opacity:0;visibility:hidden;transform:translateY(-8px) scale(.97);transform-origin:top right;
  transition:opacity .3s var(--ease),transform .35s var(--ease),visibility .35s;
}
.chat.open .chat__panel{opacity:1;visibility:visible;transform:translateY(0) scale(1)}
.chat__close{
  position:absolute;top:8px;right:12px;background:none;border:none;
  font-size:1.7rem;line-height:1;color:#8a8f99;cursor:pointer;padding:4px 8px;
}
.chat__close:hover{color:#0e1014}
.chat__flag{
  font-size:.7rem;letter-spacing:.26em;text-transform:uppercase;
  color:#c2a06b;font-weight:600;margin-bottom:4px;
}
.chat__panel h3{font-family:var(--sans);font-size:1.25rem;font-weight:600;
  letter-spacing:-.01em;margin-bottom:12px;color:#0e1014}
.chat__msgs{height:280px;overflow-y:auto;display:flex;flex-direction:column;gap:10px;
  padding:4px 2px;margin-bottom:12px}
.chat__msg{max-width:85%;padding:10px 14px;border-radius:14px;font-size:.9rem;line-height:1.5;
  white-space:pre-wrap;overflow-wrap:break-word}
.chat__msg--assistant{align-self:flex-start;background:#ece8df;color:#0e1014;border:none;border-bottom-left-radius:4px}
.chat__msg--user{align-self:flex-end;background:#0e1014;color:#f6f4ef;font-weight:400;border-bottom-right-radius:4px}
.chat__msg--typing{color:#8a8f99;letter-spacing:.2em}
.chat__form{display:flex;gap:8px}
.chat__form input{flex:1;padding:12px 14px;font-size:.92rem;font-family:var(--sans);
  background:#fff;border:1px solid rgba(14,16,20,.12);border-radius:4px;color:#0e1014}
.chat__form input::placeholder{color:#8a8f99}
.chat__form input:focus{outline:none;border-color:#c2a06b}
.chat__send{width:44px;border:none;border-radius:4px;background:#c2a06b;color:#1a1206;
  cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
  transition:background .3s var(--ease)}
.chat__send svg{width:17px;height:17px}
.chat__send:hover{background:#a8854f}
@media(max-width:480px){
  .chat{top:64px;right:18px}
  .nav__cta--chat{padding:11px 12px}
  .nav__cta--chat span{display:none}
  .chat__panel{width:calc(100vw - 36px)}
  .chat__msgs{height:240px}
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:1100px){
  .hero__note{display:none}
  .showcase__grid,.charter{grid-template-columns:1fr;gap:44px}
  .showcase__img img{height:380px}
  .stats4{grid-template-columns:repeat(2,1fr)}
  .formats{grid-template-columns:repeat(4,1fr)}
  .formats .format:nth-child(n){grid-column:span 2}
  .formats .format:nth-child(5){grid-column:span 4}
}
@media(max-width:960px){
  .nav__inner{padding:12px clamp(16px,4vw,28px)}
  .nav__brand-logo{height:34px}
  .nav__cta{padding:11px 18px;font-size:.72rem}
  .nav__links{
    position:fixed;inset:0 0 0 auto;width:82%;max-width:340px;height:100vh;background:var(--night-2);
    flex-direction:column;justify-content:center;gap:26px;transform:translateX(100%);
    transition:transform .55s var(--ease);box-shadow:-30px 0 80px -30px rgba(0,0,0,.9);z-index:1001;padding:0 44px;
    align-items:flex-start;border-left:1px solid var(--hair-d);
  }
  .nav__links.open{transform:translateX(0)}
  .nav__link{color:#fff;font-size:1rem}
  .nav__toggle{display:flex;z-index:1002}
  .nav__toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
  .nav__toggle.active span:nth-child(2){opacity:0}
  .nav__toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
}
@media(max-width:720px){
  .container{padding:0 20px}
  .block{padding:66px 0}
  .hero{min-height:auto}
  .hero__slide{background-image:url('assets/photos/night.jpg')!important}
  .hero__inner{padding:100px 20px 30px}
  .hero__grid{grid-template-columns:1fr;gap:22px;align-items:stretch}
  .hero__title{font-size:clamp(2.4rem,11vw,3.4rem);max-width:none;margin-bottom:26px}
  .hero__columns{display:none}
  .charter__panel--hero{padding:22px 18px 14px}
  .charter--contacts{grid-template-columns:1fr}
  .field input,.field textarea,.field select{font-size:16px}
  .block__head{margin-bottom:36px}
  .stats4{gap:10px;margin-bottom:44px}
  .stats4 .stat{padding:18px 16px}
  .formats{grid-template-columns:1fr}
  .formats .format:nth-child(n){grid-column:auto}
  .plates{grid-template-columns:1fr}
  .plates img{height:240px}
  .logos{padding:26px 22px;gap:22px;justify-content:center}
  .logos img{height:22px}
  .field-row{grid-template-columns:1fr}
  .charter__panel{padding:26px 20px 18px}
  .showcase__img img{height:280px}
  .techsheet__row{flex-direction:column;align-items:flex-start;gap:4px}
  .techsheet__row b{text-align:left}
}

@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.1ms!important}
  .reveal,.fade-in{opacity:1;transform:none}
  .hero__title .char{opacity:1;transform:none}
}