/* ===== vilises · SMM portfolio ===== */

/* The deck itself is set in Mont (Fontfabric, commercial) + Montserrat. We ship
   Montserrat only — it is the half of that pair that is free to use on the web,
   and it keeps the UI consistent with the slides. */

:root{
  --bg:#0a0a0b;
  --bg-soft:#111114;
  --fg:#f4f2ee;
  --muted:#8a8781;
  --line:rgba(255,255,255,.10);
  --accent:#ff5a1f;
  --maxw:1400px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --sans:"Montserrat",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --gap:2px; /* white separator between slides */
}
*{box-sizing:border-box}
html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}
body{
  margin:0;
  background:var(--bg);
  color:var(--fg);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit}

/* ---------- continuous full-width deck ----------
   Every slide spans the full width at its native 16:9 ratio, one straight after
   another — no letterboxing, so there is never a black band above or below a
   slide. The only thing between two slides is a 1.5 mm white rule. */
.slide{
  position:relative;
  display:block;
}
.slide + .slide{border-top:var(--gap) solid #fff}
.contacts{border-top:var(--gap) solid #fff}
.slide figure{
  margin:0;
  width:100%;
  display:block;
  cursor:zoom-in;
}
.slide img{
  width:100%;height:auto;
  display:block;
}
/* subtle fade-in for below-the-fold slides only; slide 1 is never gated,
   so the first screen is painted as soon as the image decodes */
html.js .slide:not(:first-child) figure{
  opacity:0;
  transition:opacity .7s var(--ease);
}
html.js .slide.in figure{opacity:1}

/* ---------- top bar ---------- */
.topbar{
  position:fixed;inset:0 0 auto 0;z-index:40;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px clamp(14px,3.5vw,40px);
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--fg);
  pointer-events:none;
  mix-blend-mode:difference;
}
.topbar .brand{font-weight:600;letter-spacing:.28em}
.topbar .count{font-variant-numeric:tabular-nums;color:var(--fg);opacity:.9}
.topbar .count b{font-weight:600}
.topbar .count i{opacity:.5;font-style:normal;margin:0 2px}

/* progress bar */
.progress{
  position:fixed;top:0;left:0;height:2px;width:0%;
  background:var(--accent);z-index:50;
  transition:width .15s linear;
}

/* ---------- loader ---------- */
.loader{
  position:fixed;inset:0;z-index:100;
  background:var(--bg);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;
  transition:opacity .8s var(--ease), visibility .8s;
}
.loader.hide{opacity:0;visibility:hidden}
.loader .lg{
  font-family:var(--sans);
  font-weight:700;font-size:clamp(30px,7.5vw,72px);letter-spacing:.06em;line-height:1;
  text-transform:uppercase;color:var(--fg);
}
.loader .sub{
  font-size:12px;letter-spacing:.42em;text-transform:uppercase;color:var(--muted);
}
.loader .bar{width:min(220px,60vw);height:2px;background:var(--line);overflow:hidden;border-radius:2px}
.loader .bar span{display:block;height:100%;width:40%;background:var(--fg);
  animation:load 1s var(--ease) infinite}
@keyframes load{0%{transform:translateX(-120%)}100%{transform:translateX(320%)}}

/* ---------- scroll hint ---------- */
.hint{
  position:fixed;left:50%;bottom:22px;transform:translateX(-50%);z-index:40;
  font-size:11px;letter-spacing:.34em;text-transform:uppercase;color:var(--muted);
  display:flex;flex-direction:column;align-items:center;gap:8px;
  transition:opacity .5s;pointer-events:none;
}
.hint.gone{opacity:0}
.hint .mouse{width:20px;height:32px;border:1.5px solid var(--muted);border-radius:12px;position:relative}
.hint .mouse::after{content:"";position:absolute;left:50%;top:6px;width:3px;height:6px;border-radius:2px;
  background:var(--muted);transform:translateX(-50%);animation:wheel 1.4s var(--ease) infinite}
@keyframes wheel{0%{opacity:0;transform:translate(-50%,0)}30%{opacity:1}100%{opacity:0;transform:translate(-50%,10px)}}

/* ---------- contacts (follows the closing “З ПИТАНЬ ↓” slide) ---------- */
.contacts{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:clamp(16px,2.4vh,24px);
  text-align:center;padding:clamp(26px,4.5vh,44px) 24px;
  font-family:var(--sans);
}
.contacts__links{display:flex;gap:clamp(14px,2.5vw,26px);flex-wrap:wrap;justify-content:center}
.cbtn{
  display:inline-flex;align-items:center;gap:12px;
  text-decoration:none;color:var(--fg);
  border:1px solid var(--line);border-radius:999px;
  padding:clamp(14px,1.6vw,20px) clamp(24px,2.6vw,36px);
  font-family:var(--sans);font-size:clamp(15px,1.35vw,19px);
  letter-spacing:.02em;line-height:1;
  background:rgba(255,255,255,.02);
  transition:background .35s var(--ease),border-color .35s var(--ease),
             color .35s var(--ease),transform .35s var(--ease);
}
.cbtn svg{
  width:1.25em;height:1.25em;flex:none;
  stroke:currentColor;fill:none;stroke-width:1.7;stroke-linejoin:round;
}
.cbtn__t{font-weight:700}
.cbtn__h{color:var(--accent);transition:color .35s var(--ease)}
.cbtn:hover{background:var(--fg);color:var(--bg);border-color:var(--fg);transform:translateY(-3px)}
.cbtn:hover .cbtn__h{color:var(--bg)}
.cbtn:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
.contacts__name{
  font-size:clamp(11px,1vw,13px);letter-spacing:.3em;text-transform:uppercase;color:var(--muted);
}

/* ---------- lightbox ---------- */
.lb{
  position:fixed;inset:0;z-index:90;background:rgba(6,6,7,.96);
  display:none;align-items:center;justify-content:center;padding:2vmin;
  cursor:zoom-out;opacity:0;transition:opacity .3s var(--ease);
}
.lb.open{display:flex;opacity:1}
.lb img{max-width:100%;max-height:96svh;border-radius:8px;box-shadow:0 20px 80px rgba(0,0,0,.7)}
.lb .x{position:fixed;top:18px;right:22px;color:var(--fg);font-size:26px;opacity:.7;line-height:1}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  html.js .slide figure,
  html.js .slide:not(:first-child) figure{transition:none;opacity:1;transform:none}
}