/* ============================================================
   Nikita Rozanov — Flagship rework
   Modern / Apple-inspired. Dark default + light mode.
   ============================================================ */

:root{
  --bg: oklch(0.155 0.012 264);
  --bg-2: oklch(0.195 0.013 264);
  --bg-3: oklch(0.235 0.014 264);
  --line: oklch(0.30 0.012 264);
  --line-2: oklch(0.40 0.012 264);
  --ink: oklch(0.97 0.005 264);
  --ink-2: oklch(0.74 0.012 264);
  --ink-3: oklch(0.56 0.014 264);
  --accent: oklch(0.72 0.135 240);
  --accent-2: oklch(0.80 0.13 200);
  --glow: oklch(0.72 0.135 240 / 0.5);
  --display: 'Schibsted Grotesk', system-ui, sans-serif;
  --body: 'Manrope', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
  --max: 1240px;
  --pad: clamp(20px, 5vw, 64px);
}
html[data-theme="light"]{
  --bg: oklch(0.985 0.003 250);
  --bg-2: oklch(0.962 0.005 250);
  --bg-3: oklch(0.93 0.007 250);
  --line: oklch(0.88 0.006 250);
  --line-2: oklch(0.80 0.008 250);
  --ink: oklch(0.18 0.012 264);
  --ink-2: oklch(0.40 0.014 264);
  --ink-3: oklch(0.55 0.014 264);
  --accent: oklch(0.54 0.16 250);
  --accent-2: oklch(0.58 0.14 215);
  --glow: oklch(0.54 0.16 250 / 0.30);
}
html{color-scheme:dark}
html[data-theme="light"]{color-scheme:light}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--body);
  font-size:18px;
  line-height:1.6;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
::selection{background:var(--accent);color:var(--bg)}
img{display:block;max-width:100%}

.wrap{max-width:var(--max);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}
.mono{font-family:var(--mono);font-size:12px;letter-spacing:0.14em;text-transform:uppercase;color:var(--ink-3);font-weight:500}
.eyebrow{display:inline-flex;align-items:center;gap:11px}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 14px var(--glow)}

/* ---------- scroll progress ---------- */
.scroll-prog{position:fixed;top:0;left:0;height:2px;width:100%;transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));z-index:120;will-change:transform}

/* ---------- nav ---------- */
nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .4s ease,border-color .4s ease,padding .4s ease;
  border-bottom:1px solid transparent;padding:22px 0}
nav.scrolled{background:color-mix(in oklch,var(--bg) 72%,transparent);backdrop-filter:blur(20px) saturate(1.4);
  border-bottom:1px solid var(--line);padding:14px 0}
.nav-in{max-width:var(--max);margin:0 auto;padding:0 var(--pad);display:flex;align-items:center;justify-content:space-between}
.brand{font-family:var(--display);font-weight:700;font-size:18px;letter-spacing:-0.01em;display:flex;align-items:center;gap:9px}
.brand .mk{width:22px;height:22px;border-radius:6px;background:linear-gradient(135deg,var(--accent),var(--accent-2));display:inline-block}
.nav-links{display:flex;gap:30px;align-items:center}
.nav-links a{font-size:14.5px;font-weight:500;color:var(--ink-2);position:relative;transition:color .2s}
.nav-links a::after{content:"";position:absolute;left:0;right:101%;bottom:-4px;height:1.5px;border-radius:2px;background:var(--accent);transition:right .3s cubic-bezier(.2,.7,.2,1)}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{right:0}
@media(max-width:780px){.nav-links a.txt,.nav-links .nav-dd{display:none}}
.nav-dd{position:relative}
.nav-dd>.dd-trigger{display:inline-flex;align-items:center;gap:6px}
.nav-dd>.dd-trigger .chev{transition:transform .25s}
.nav-dd:hover>.dd-trigger .chev,.nav-dd:focus-within>.dd-trigger .chev{transform:rotate(180deg)}
.dd-menu{position:absolute;top:calc(100% + 12px);left:50%;transform:translateX(-50%) translateY(8px);min-width:196px;
  background:color-mix(in oklch,var(--bg) 86%,transparent);backdrop-filter:blur(20px) saturate(1.4);
  border:1px solid var(--line);border-radius:14px;padding:8px;display:flex;flex-direction:column;gap:2px;
  opacity:0;visibility:hidden;pointer-events:none;transition:opacity .25s,transform .25s,visibility .25s;z-index:110;
  box-shadow:0 18px 50px -12px oklch(0 0 0 / 0.5)}
.dd-menu::before{content:"";position:absolute;left:0;right:0;top:-16px;height:16px}
.nav-dd:hover .dd-menu,.nav-dd:focus-within .dd-menu,.nav-dd.open .dd-menu{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0)}
.nav-dd.open>.dd-trigger .chev{transform:rotate(180deg)}
.dd-menu a{padding:11px 14px;border-radius:10px;font-size:14.5px;font-weight:500;color:var(--ink-2);white-space:nowrap;transition:background .2s,color .2s,padding-left .2s}
.dd-menu a::after{display:none}
.dd-menu a:hover{background:var(--bg-2);color:var(--ink);padding-left:18px}
.dd-menu .sub{font-family:var(--mono);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);padding:6px 14px 6px}
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid var(--line-2);
  border-radius:50%;color:var(--ink);background:transparent;cursor:pointer;transition:border-color .25s,color .25s,background .25s}
.theme-toggle:hover{border-color:var(--accent);color:var(--accent);background:color-mix(in oklch,var(--accent) 10%,transparent)}
.theme-toggle svg{transition:transform .7s cubic-bezier(.3,.8,.2,1)}
html[data-theme="light"] .theme-toggle svg{transform:rotate(180deg)}

/* ---------- buttons ---------- */
.btn{font-family:var(--body);font-weight:600;font-size:15px;padding:14px 26px;border-radius:99px;display:inline-flex;align-items:center;gap:9px;
  border:1px solid var(--line-2);color:var(--ink);transition:transform .25s cubic-bezier(.2,.7,.2,1),background .25s,border-color .25s,color .25s;will-change:transform}
.btn .arr{transition:transform .3s cubic-bezier(.2,.7,.2,1)}
.btn:hover .arr{transform:translateX(4px)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--bg)}
.btn.primary:hover{filter:brightness(1.06)}
.btn.ghost:hover{border-color:var(--ink);background:var(--bg-2)}

/* ---------- HERO ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;overflow:hidden;isolation:isolate}
#stars{position:absolute;inset:0;z-index:-1}
.aurora{position:absolute;inset:-20% -10% 0 -10%;z-index:-2;pointer-events:none;filter:blur(70px);opacity:.65}
.aurora span{position:absolute;border-radius:50%;mix-blend-mode:screen;animation:drift 22s ease-in-out infinite alternate}
.aurora .a1{width:46vw;height:46vw;left:-6vw;top:-10vh;background:radial-gradient(circle,var(--accent),transparent 62%)}
.aurora .a2{width:40vw;height:40vw;right:-4vw;top:6vh;background:radial-gradient(circle,var(--accent-2),transparent 62%);animation-delay:-7s}
.aurora .a3{width:32vw;height:32vw;left:34vw;top:30vh;background:radial-gradient(circle,oklch(0.66 0.16 285),transparent 62%);animation-delay:-13s}
html[data-theme="light"] .aurora{opacity:.32}
@keyframes drift{0%{transform:translate(0,0) scale(1)}50%{transform:translate(4vw,3vh) scale(1.12)}100%{transform:translate(-3vw,-2vh) scale(1.05)}}
.hero-inner{position:relative;z-index:1;width:100%;will-change:transform,opacity}
.hero h1{font-family:var(--display);font-weight:700;font-size:clamp(52px,11vw,152px);line-height:0.92;letter-spacing:-0.03em;margin:26px 0 0}
.hero h1 .ln{display:block;overflow:hidden}
.hero .sub{font-size:clamp(19px,2.3vw,26px);font-weight:400;line-height:1.45;color:var(--ink-2);max-width:32ch;margin-top:34px}
.hero .sub b{color:var(--ink);font-weight:600}
.hero .cta{display:flex;gap:14px;margin-top:40px;flex-wrap:wrap}
.scrollcue{position:absolute;bottom:34px;left:50%;transform:translateX(-50%);z-index:1;display:flex;flex-direction:column;align-items:center;gap:10px;color:var(--ink-3)}
.scrollcue .bar{width:1px;height:46px;background:linear-gradient(var(--ink-3),transparent);position:relative;overflow:hidden}
.scrollcue .bar::after{content:"";position:absolute;top:-50%;left:0;width:100%;height:50%;background:var(--accent);animation:cue 2.2s ease-in-out infinite}
@keyframes cue{0%{top:-50%}60%,100%{top:100%}}

/* ---------- generic section ---------- */
section{position:relative}
.band{padding:clamp(90px,14vh,170px) 0}
.kicker{display:flex;align-items:center;gap:14px;margin-bottom:30px}
.kicker .ln{flex:1;height:1px;background:var(--line)}
.section-title{font-family:var(--display);font-weight:700;font-size:clamp(34px,5.5vw,64px);line-height:1.02;letter-spacing:-0.025em}
.section-title em{font-style:normal;color:var(--accent)}

/* ---------- statement (line brighten) ---------- */
.statement{padding:clamp(100px,18vh,220px) 0}
.statement .big{font-family:var(--display);font-weight:600;font-size:clamp(30px,5.2vw,68px);line-height:1.08;letter-spacing:-0.02em;max-width:18ch}
.statement .line{display:block}
.statement .big .accent{color:var(--accent)}

/* ---------- focus (pinned-feel) ---------- */
.focus-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,5vw,80px);align-items:center}
@media(max-width:860px){.focus-grid{grid-template-columns:1fr;gap:40px}}
.focus-visual{aspect-ratio:4/3;border-radius:20px;border:1px solid var(--line);position:relative;overflow:hidden;
  background:radial-gradient(130% 130% at 78% 18%,color-mix(in oklch,var(--accent) 16%,var(--bg-2)),var(--bg) 78%);}
.focus-visual #magneto{position:absolute;inset:0;width:100%;height:100%;display:block}
.focus-visual .label{position:absolute;left:18px;bottom:16px;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);background:color-mix(in oklch,var(--bg) 55%,transparent);padding:5px 11px;border-radius:99px;backdrop-filter:blur(8px);z-index:2}
.focus-text h2{font-family:var(--display);font-weight:700;font-size:clamp(30px,4.5vw,52px);line-height:1.04;letter-spacing:-0.025em;margin:18px 0 22px}
.focus-text p{font-size:18.5px;color:var(--ink-2);max-width:50ch}
.focus-text p strong{color:var(--ink);font-weight:600}
.focus-text .live{display:inline-flex;align-items:center;gap:9px;margin-top:26px;font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}
.focus-text .live .d{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:pl 2.3s infinite}
@keyframes pl{0%{box-shadow:0 0 0 0 var(--glow)}70%{box-shadow:0 0 0 13px transparent}100%{box-shadow:0 0 0 0 transparent}}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:18px;overflow:hidden}
@media(max-width:680px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat{background:var(--bg);padding:34px 28px;transition:background .3s}
.stat:hover{background:var(--bg-2)}
.stat .v{font-family:var(--display);font-weight:700;font-size:clamp(34px,4.5vw,56px);letter-spacing:-0.02em;line-height:1}
.stat .v span{color:var(--accent)}
.stat .k{margin-top:12px;font-size:14px;color:var(--ink-3)}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:clamp(34px,6vw,90px)}
@media(max-width:860px){.about-grid{grid-template-columns:1fr;gap:44px}}
.about-grid p{font-size:clamp(19px,2vw,23px);line-height:1.55;color:var(--ink-2);margin-bottom:22px;max-width:52ch}
.about-grid p strong{color:var(--ink);font-weight:600}
.about-grid a.inl{color:var(--accent);border-bottom:1px solid color-mix(in oklch,var(--accent) 40%,transparent);transition:border-color .2s}
.about-grid a.inl:hover{border-color:var(--accent)}
.tags-side h4{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);margin-bottom:18px}
.tags-side .row{display:flex;flex-wrap:wrap;gap:10px}
.pill{font-size:14.5px;color:var(--ink-2);background:var(--bg-2);border:1px solid var(--line);padding:8px 15px;border-radius:99px;transition:all .25s}
.pill:hover{color:var(--ink);border-color:var(--accent);transform:translateY(-2px)}

/* ---------- timeline ---------- */
.tl{border-top:1px solid var(--line)}
.tl-row{display:grid;grid-template-columns:200px 1fr auto;gap:36px;padding:38px 0;border-bottom:1px solid var(--line);align-items:baseline;transition:padding-left .3s}
.tl-row:hover{padding-left:14px}
@media(max-width:760px){.tl-row{grid-template-columns:1fr;gap:10px}}
.tl-when{font-family:var(--mono);font-size:12px;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-3)}
.tl-main h3{font-family:var(--display);font-weight:600;font-size:clamp(22px,2.6vw,30px);letter-spacing:-0.01em}
.tl-main .deg{color:var(--ink-2);font-size:16.5px;margin:5px 0 12px}
.tl-main p{font-size:15.5px;color:var(--ink-3);max-width:62ch;line-height:1.6}
.chip{font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);border:1px solid var(--line-2);padding:6px 12px;border-radius:99px;white-space:nowrap}

/* ---------- skills ---------- */
.skills-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:18px;overflow:hidden}
@media(max-width:680px){.skills-grid{grid-template-columns:1fr}}
.skill-block{background:var(--bg);padding:30px 30px 34px}
.skill-block h4{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:18px}
.skill-block .row{display:flex;flex-wrap:wrap;gap:9px}

/* ---------- projects ---------- */
.proj-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
@media(max-width:760px){.proj-grid{grid-template-columns:1fr}}
.proj{background:var(--bg-2);border:1px solid var(--line);border-radius:20px;padding:34px;transition:transform .35s cubic-bezier(.2,.7,.2,1),border-color .35s;position:relative;overflow:hidden}
.proj::before{content:"";position:absolute;inset:0;background:radial-gradient(120% 120% at 100% 0%,var(--glow),transparent 45%);opacity:0;transition:opacity .4s}
.proj:hover{transform:translateY(-6px);border-color:var(--line-2)}
.proj:hover::before{opacity:.5}
.proj .yr{font-family:var(--mono);font-size:12px;color:var(--accent);position:relative}
.proj h3{font-family:var(--display);font-weight:600;font-size:clamp(24px,3vw,32px);letter-spacing:-0.015em;margin:14px 0 14px;position:relative}
.proj p{color:var(--ink-2);font-size:16px;margin-bottom:20px;position:relative}
.proj .row{display:flex;gap:8px;flex-wrap:wrap;position:relative}

/* ---------- horizontal gallery ---------- */
.gallery{position:relative;height:320vh}
.gallery-pin{position:sticky;top:0;height:100svh;display:flex;flex-direction:column;justify-content:center;overflow:hidden}
.gallery-head{padding:0 var(--pad);max-width:var(--max);margin:0 auto;width:100%;display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:36px;flex-wrap:wrap}
.gallery-track{display:flex;gap:24px;padding:0 var(--pad);will-change:transform}
.slide{flex:0 0 min(58vw,520px);border-radius:20px;border:1px solid var(--line);overflow:hidden;position:relative;aspect-ratio:4/5;
  background-image:repeating-linear-gradient(135deg,var(--bg-2) 0 13px,var(--bg-3) 13px 26px)}
.slide.wide{flex-basis:min(74vw,680px);aspect-ratio:16/10}
.slide.filled{background-image:none}
.slide.filled img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.slide.filled .idx{color:rgba(255,255,255,.85)}
.slide .cap{position:absolute;left:18px;bottom:18px;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2);
  background:color-mix(in oklch,var(--bg) 60%,transparent);padding:7px 13px;border-radius:99px;backdrop-filter:blur(8px)}
.slide .idx{position:absolute;right:18px;top:16px;font-family:var(--mono);font-size:11px;color:var(--ink-3)}

/* ---------- contact ---------- */
.contact{padding:clamp(100px,16vh,200px) 0}
.contact h2{font-family:var(--display);font-weight:800;font-size:clamp(48px,10vw,140px);line-height:0.92;letter-spacing:-0.035em}
.contact h2 em{font-style:normal;color:var(--accent)}
.contact .blurb{font-size:clamp(18px,2vw,22px);color:var(--ink-2);max-width:42ch;margin:30px 0 40px}
.links{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:18px;overflow:hidden;margin-top:10px}
@media(max-width:620px){.links{grid-template-columns:1fr}}
.links a{background:var(--bg);padding:24px 28px;display:flex;justify-content:space-between;align-items:center;gap:16px;transition:background .25s,padding-left .25s}
.links a:hover{background:var(--bg-2);padding-left:36px}
.links a .lbl{font-family:var(--display);font-weight:600;font-size:19px}
.links a .val{font-family:var(--mono);font-size:12.5px;color:var(--ink-3);text-align:right}
.links a:hover .val{color:var(--accent)}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:40px 0}
.foot-in{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px}
.foot-in .mono{font-size:11.5px}

/* ============================================================
   MOTION
   ============================================================ */
@keyframes rise{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:none}}
@media(prefers-reduced-motion:no-preference){
  .rise{opacity:0;animation:rise .95s cubic-bezier(.2,.7,.2,1) forwards}
}
@keyframes revealIn{from{opacity:0;transform:translateY(52px)}to{opacity:1;transform:none}}
@keyframes brighten{from{opacity:.16}to{opacity:1}}

/* Scroll-driven where supported; content visible otherwise */
@supports (animation-timeline: view()){
  @media(prefers-reduced-motion:no-preference){
    .reveal{opacity:0;will-change:opacity,transform;animation:revealIn linear both;animation-timeline:view();animation-range:entry 4% cover 34%}
    .statement .line{opacity:.16;animation:brighten linear both;animation-timeline:view();animation-range:entry 26% cover 64%}
  }
}
@media(prefers-reduced-motion:reduce){
  .aurora,.scrollcue{display:none}
  .ring,.aurora span{animation:none}
}