/* ============================================================
   Denis Efremov — Portfolio
   Dark · minimalist · cinematic  (palette pulled from hero video)
   ============================================================ */

:root{
  --bg:        #08080a;
  --bg-2:      #0c0b0f;
  --ink:       #F3EFE7;
  --ink-soft:  rgba(243,239,231,.60);
  --ink-faint: rgba(243,239,231,.34);
  --line:      rgba(243,239,231,.12);
  --line-soft: rgba(243,239,231,.07);

  --gold:      #E9A23B;
  --gold-soft: #f2c074;
  --cyan:      #5BB0FF;
  --accent:    var(--gold);

  --display: "Space Grotesk", system-ui, sans-serif;
  --body:    "Inter", system-ui, sans-serif;

  --ease: cubic-bezier(.22,1,.36,1);
  --pad: clamp(1.25rem, 5vw, 5rem);
  --maxw: 1500px;
}

*{ margin:0; padding:0; box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; }
body{
  font-family:var(--body);
  background:var(--bg);
  color:var(--ink);
  line-height:1.5;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  cursor:none;
}
@media (hover:none){ body{ cursor:auto; } }

a{ color:inherit; text-decoration:none; }
::selection{ background:var(--gold); color:#000; }
img,canvas{ display:block; }

/* ───────────────── Ambient layers ───────────────── */
#bg-canvas{
  position:fixed; inset:0; width:100%; height:100%;
  z-index:0; opacity:.85; pointer-events:none;
}
.grain{
  position:fixed; inset:-50%; z-index:1; pointer-events:none;
  opacity:.05; 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='.8' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grain 6s steps(6) infinite;
}
@keyframes grain{
  0%,100%{transform:translate(0,0)} 20%{transform:translate(-4%,3%)}
  40%{transform:translate(3%,-4%)} 60%{transform:translate(-3%,2%)}
  80%{transform:translate(2%,-2%)}
}

/* ───────────────── Custom cursor ───────────────── */
.cursor{
  position:fixed; top:0; left:0; z-index:9999; pointer-events:none;
  width:9px; height:9px; border-radius:50%;
  background:var(--gold);
  transform:translate(-50%,-50%);
  transition:width .3s var(--ease), height .3s var(--ease),
             background .3s var(--ease), opacity .3s var(--ease);
  mix-blend-mode:difference;
}
.cursor.is-hover{ width:46px; height:46px; background:var(--ink); }
@media (hover:none){ .cursor{ display:none; } }

/* ───────────────── Scroll progress ───────────────── */
.scroll-progress{
  position:fixed; top:0; left:0; width:100%; height:2px; z-index:300;
  background:var(--line-soft);
}
.scroll-progress span{
  display:block; height:100%; width:0%;
  background:linear-gradient(90deg,var(--gold),var(--cyan));
}

/* ───────────────── Preloader ───────────────── */
.loader{
  position:fixed; inset:0; z-index:1000;
  background:var(--bg);
  display:flex; align-items:flex-end;
  padding:var(--pad);
  transition:opacity .8s var(--ease), visibility .8s;
}
.loader.is-done{ opacity:0; visibility:hidden; }
.loader__inner{ width:100%; max-width:var(--maxw); margin:0 auto; }
.loader__brand{
  font-family:var(--display); font-weight:600;
  font-size:clamp(2.2rem,9vw,7rem); letter-spacing:-.02em; line-height:1;
}
.loader__meta{
  display:flex; justify-content:space-between; align-items:baseline;
  margin:1.4rem 0 .8rem; color:var(--ink-soft);
  font-size:.78rem; text-transform:uppercase; letter-spacing:.18em;
}
.loader__pct i{ font-style:normal; color:var(--ink); }
.loader__track{ height:1px; background:var(--line); overflow:hidden; }
.loader__track span{
  display:block; height:100%; width:0%;
  background:linear-gradient(90deg,var(--gold),var(--cyan));
  transition:width .25s linear;
}

/* ───────────────── Nav ───────────────── */
.nav{
  position:fixed; top:0; left:0; width:100%; z-index:200;
  display:flex; justify-content:space-between; align-items:center;
  padding:1.4rem var(--pad);
  mix-blend-mode:difference;
  transition:padding .5s var(--ease);
}
.nav.is-scrolled{ padding-top:1rem; padding-bottom:1rem; }
.nav__brand{
  font-family:var(--display); font-weight:600; font-size:1rem; letter-spacing:.01em;
  display:flex; flex-direction:column; line-height:1.1; color:#fff;
}
.nav__brand small{
  font-family:var(--body); font-weight:400; font-size:.62rem;
  letter-spacing:.28em; text-transform:uppercase; opacity:.6; margin-top:.2rem;
}
.nav__links{ display:flex; align-items:center; gap:clamp(1rem,2.4vw,2.4rem); }
.nav__links a{
  font-size:.82rem; letter-spacing:.04em; color:#fff; position:relative;
  padding:.3rem 0;
}
.nav__links a:not(.nav__cta)::after{
  content:""; position:absolute; left:0; bottom:.1rem; width:0; height:1px;
  background:currentColor; transition:width .4s var(--ease);
}
.nav__links a:not(.nav__cta):hover::after{ width:100%; }
.nav__cta{
  border:1px solid rgba(255,255,255,.45); border-radius:100px;
  padding:.5rem 1.1rem !important;
}
@media (max-width:680px){
  .nav__links a:not(.nav__cta){ display:none; }
}

/* ───────────────── HERO ───────────────── */
.hero{ position:relative; height:560vh; z-index:5; }
.hero__sticky{
  position:sticky; top:0; height:100vh; width:100%; overflow:hidden;
  background:var(--bg);
}
#hero-canvas{ position:absolute; inset:0; width:100%; height:100%; }
.hero__scrim{
  position:absolute; inset:0; pointer-events:none;
  background:
    radial-gradient(120% 90% at 50% 38%, transparent 40%, rgba(8,8,10,.55) 100%),
    linear-gradient(to top, rgba(8,8,10,.95) 0%, rgba(8,8,10,.25) 32%, transparent 55%),
    linear-gradient(to bottom, rgba(8,8,10,.65) 0%, transparent 22%);
}

/* corner frame tags */
.hero__frame{ position:absolute; inset:0; pointer-events:none; }
.hero__tag{
  position:absolute; font-size:.66rem; letter-spacing:.2em; text-transform:uppercase;
  color:var(--ink-soft);
}
.hero__tag--tl{ top:6.5rem; left:var(--pad); }
.hero__tag--tr{ top:6.5rem; right:var(--pad); text-align:right; }
.hero__tag--bl{ bottom:2rem; left:var(--pad); }
.hero__tag--br{ bottom:2rem; right:var(--pad); color:var(--gold); }
@media (max-width:680px){ .hero__tag--tr,.hero__tag--bl{ display:none; } }

/* overlay copy */
.hero__overlay{
  position:absolute; inset:0; display:flex; align-items:flex-end;
  padding:0 var(--pad) clamp(3.5rem,10vh,8rem);
  pointer-events:none;
}
.hero__copy{ position:relative; width:100%; max-width:var(--maxw); margin:0 auto; }
.h-line{ position:absolute; bottom:0; left:0; will-change:transform,opacity; }
.h-line--1{ position:relative; }
.eyebrow{
  display:flex; align-items:center; gap:.6rem;
  font-size:.78rem; letter-spacing:.24em; text-transform:uppercase;
  color:var(--ink-soft); margin-bottom:1.1rem;
}
.eyebrow i{ width:26px; height:1px; background:var(--gold); display:inline-block; }
.hero__title{
  font-family:var(--display); font-weight:600; line-height:.92;
  font-size:clamp(3.4rem,13vw,11rem); letter-spacing:-.03em;
}
.hero__title span{
  -webkit-text-stroke:1px var(--ink); color:transparent;
}
.h-line--2 h2,.h-line--3 h2,.h-line--4 h2{
  font-family:var(--display); font-weight:500; line-height:1;
  font-size:clamp(2.4rem,8.5vw,7rem); letter-spacing:-.02em;
  opacity:0;
}
.h-line em{ font-style:normal; color:var(--gold); }
.h-line--3 em{ color:var(--cyan); }
.h-line .x{ color:var(--gold); font-style:normal; }

.hero__scrollhint{
  position:absolute; bottom:1.8rem; left:50%; transform:translateX(-50%);
  display:flex; flex-direction:column; align-items:center; gap:.7rem;
  font-size:.66rem; letter-spacing:.24em; text-transform:uppercase;
  color:var(--ink-soft); pointer-events:none;
}
.hero__scrollhint i{
  width:1px; height:42px; background:linear-gradient(var(--gold),transparent);
  position:relative; overflow:hidden;
}
.hero__scrollhint i::after{
  content:""; position:absolute; top:0; left:0; width:100%; height:40%;
  background:var(--ink); animation:scrolldot 1.8s var(--ease) infinite;
}
@keyframes scrolldot{ 0%{transform:translateY(-110%)} 100%{transform:translateY(260%)} }

/* ───────────────── Sections shared ───────────────── */
.section{
  position:relative; z-index:5;
  max-width:var(--maxw); margin:0 auto;
  padding:clamp(7rem,16vh,14rem) var(--pad);
}
.section__index{
  font-size:.72rem; letter-spacing:.24em; text-transform:uppercase;
  color:var(--ink-faint); margin-bottom:2.2rem;
}
.section__title{
  font-family:var(--display); font-weight:500; line-height:1.02;
  font-size:clamp(2rem,5.5vw,4.2rem); letter-spacing:-.02em;
}

/* reveal base */
.reveal{ opacity:0; transform:translateY(34px); will-change:transform,opacity; }
.word{ display:inline-block; opacity:.12; will-change:opacity; transition:opacity .1s; }

/* ───────────────── Manifesto ───────────────── */
.manifesto{ padding-top:clamp(9rem,20vh,18rem); }
.manifesto__text{
  font-family:var(--display); font-weight:400;
  font-size:clamp(1.8rem,4.4vw,3.6rem); line-height:1.18; letter-spacing:-.015em;
  max-width:18ch;
}
.manifesto__text .word.is-strong{ color:var(--ink); }

/* ───────────────── About ───────────────── */
.about__grid{
  display:grid; grid-template-columns:1fr 2fr; gap:clamp(2rem,6vw,6rem);
}
.about__lead{
  font-family:var(--display); font-weight:400;
  font-size:clamp(1.4rem,2.6vw,2.1rem); line-height:1.3; letter-spacing:-.01em;
  margin-bottom:2rem;
}
.about__para{ color:var(--ink-soft); max-width:54ch; font-size:1.02rem; }
.about__stats{
  display:grid; grid-template-columns:repeat(3,1fr); gap:1.5rem;
  margin-top:4rem; padding-top:2.5rem; border-top:1px solid var(--line);
}
.stat b{
  font-family:var(--display); font-weight:500; font-size:clamp(2.4rem,5vw,3.6rem);
  display:block; line-height:1; letter-spacing:-.02em;
}
.stat span{ font-size:.8rem; color:var(--ink-soft); display:block; margin-top:.6rem; }
@media (max-width:780px){
  .about__grid{ grid-template-columns:1fr; }
  .about__stats{ grid-template-columns:1fr; gap:1.6rem; }
}

/* ───────────────── Expertise ───────────────── */
.expertise__head{ margin-bottom:clamp(3rem,7vh,6rem); max-width:46ch; }
.expertise__head .section__title{ margin-top:1.5rem; }
.expertise__list{ list-style:none; border-top:1px solid var(--line); }
.disc{
  display:grid; grid-template-columns:64px 1.1fr 2fr; gap:1.5rem; align-items:start;
  padding:2.2rem 0; border-bottom:1px solid var(--line);
  transition:background .4s var(--ease);
}
.disc__no{ font-size:.78rem; color:var(--ink-faint); padding-top:.45rem; letter-spacing:.1em; }
.disc h3{
  font-family:var(--display); font-weight:500; font-size:clamp(1.4rem,2.8vw,2.1rem);
  letter-spacing:-.01em; transition:transform .5s var(--ease), color .4s;
}
.disc p{ color:var(--ink-soft); max-width:44ch; font-size:.98rem; }
.disc:hover h3{ transform:translateX(14px); color:var(--gold); }
@media (max-width:780px){
  .disc{ grid-template-columns:40px 1fr; }
  .disc p{ grid-column:1/-1; }
}

/* ───────────────── Work ───────────────── */
.work__head{ max-width:48ch; margin-bottom:clamp(3rem,7vh,5rem); }
.work__head .section__title{ margin-top:1.5rem; }
.work__note{ color:var(--ink-soft); margin-top:1.4rem; max-width:46ch; }
.work__grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:clamp(1rem,2.5vw,2rem); }
.work-card{ display:block; group:card; }
.work-card__media{
  position:relative; aspect-ratio:4/3; border:1px solid var(--line);
  border-radius:14px; overflow:hidden;
  background:
    radial-gradient(120% 120% at 20% 10%, rgba(233,162,59,.10), transparent 50%),
    radial-gradient(120% 120% at 90% 90%, rgba(91,176,255,.10), transparent 50%),
    var(--bg-2);
  display:flex; align-items:center; justify-content:center;
  transition:border-color .5s var(--ease), transform .6s var(--ease);
}
.work-card__media span{
  font-family:var(--display); font-size:clamp(3rem,7vw,5rem); font-weight:500;
  color:var(--ink-faint); transition:color .5s var(--ease), transform .6s var(--ease);
}
.work-card:hover .work-card__media{ border-color:rgba(233,162,59,.5); }
.work-card:hover .work-card__media span{ color:var(--gold); transform:scale(1.08); }
.work-card__meta{
  display:flex; justify-content:space-between; align-items:baseline;
  margin-top:1.1rem; padding-bottom:.4rem;
}
.work-card__meta h3{ font-family:var(--display); font-weight:500; font-size:1.05rem; }
.work-card__meta p{ font-size:.78rem; color:var(--ink-soft); letter-spacing:.04em; }
@media (max-width:680px){ .work__grid{ grid-template-columns:1fr; } }

/* ───────────────── Contact ───────────────── */
.contact{ text-align:center; padding-top:clamp(8rem,16vh,14rem); }
.contact__title{
  font-family:var(--display); font-weight:500; line-height:1.04;
  font-size:clamp(2.4rem,7vw,6rem); letter-spacing:-.025em; margin-bottom:3rem;
}
.contact__title em{ font-style:normal; color:var(--gold); }
.contact__mail{
  display:inline-block; font-family:var(--display); font-weight:400;
  font-size:clamp(1.3rem,4vw,2.6rem); letter-spacing:-.01em;
  padding-bottom:.3rem; border-bottom:1px solid var(--line);
  transition:border-color .4s var(--ease), color .4s var(--ease);
}
.contact__mail:hover{ color:var(--gold); border-color:var(--gold); }
.contact__socials{
  display:flex; justify-content:center; flex-wrap:wrap; gap:2rem;
  margin-top:3.5rem;
}
.contact__socials a{
  font-size:.82rem; letter-spacing:.06em; color:var(--ink-soft);
  position:relative; transition:color .4s;
}
.contact__socials a:hover{ color:var(--ink); }

/* ───────────────── Footer ───────────────── */
.footer{
  position:relative; z-index:5;
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:1rem;
  max-width:var(--maxw); margin:0 auto;
  padding:2.5rem var(--pad); border-top:1px solid var(--line);
  font-size:.78rem; color:var(--ink-soft); letter-spacing:.04em;
}
.footer i{ font-style:normal; }

@media (max-width:680px){
  .footer{ flex-direction:column; align-items:flex-start; }
}

/* reduced motion */
@media (prefers-reduced-motion:reduce){
  *{ animation:none !important; }
  .reveal{ opacity:1 !important; transform:none !important; }
  .word{ opacity:1 !important; }
}