/* ============================================================
   Danil Minkin — portfolio · "Signal / Observatory"
   ============================================================ */

:root{
  --bg:#0a0a0b;
  --bg-2:#101116;
  --ink:#ededE8;
  --muted:#9c9c96;
  --faint:#6a6a64;
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.14);
  --card:rgba(255,255,255,.025);
  --card-hi:rgba(255,255,255,.05);
  --accent:#cdf546;      /* electric lime — used sparingly */
  --accent-ink:#0a0a0b;
  --accent-2:#7da2ff;    /* cool mesh glow */
  --display:"Bricolage Grotesque",Georgia,serif;
  --sans:"Space Grotesk",system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,monospace;
  --maxw:1120px;
  --ease:cubic-bezier(.2,.7,.2,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--ink);
  line-height:1.55;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body::before{ /* base atmosphere: two soft meshes */
  content:"";position:fixed;inset:0;z-index:-3;pointer-events:none;
  background:
    radial-gradient(60% 50% at 78% -5%, rgba(125,162,255,.16), transparent 60%),
    radial-gradient(45% 45% at 8% 8%, rgba(205,245,70,.10), transparent 60%),
    radial-gradient(80% 60% at 50% 120%, rgba(125,162,255,.10), transparent 60%);
}

/* neural canvas layer */
#neural{position:fixed;inset:0;z-index:-2;width:100%;height:100%;opacity:.9}

/* film grain */
.grain{
  position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.05;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* cursor glow */
.cursor-glow{
  position:fixed;left:0;top:0;z-index:0;width:520px;height:520px;pointer-events:none;
  transform:translate3d(calc(var(--mx,50vw) - 260px), calc(var(--my,50vh) - 260px),0);
  background:radial-gradient(circle,rgba(205,245,70,.08),transparent 62%);
  mix-blend-mode:screen;transition:opacity .4s;opacity:0;
}
@media (hover:hover) and (pointer:fine){.cursor-glow{opacity:1}}

/* ---------- layout helpers ---------- */
.section{max-width:var(--maxw);margin:0 auto;padding:clamp(72px,11vw,150px) 24px}
.section__head{max-width:760px;margin-bottom:clamp(36px,5vw,64px)}
.kicker{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);display:flex;align-items:center;gap:12px;margin-bottom:18px;
}
.kicker span{color:var(--accent)}
.section__head h2{
  font-family:var(--display);font-weight:700;letter-spacing:-.02em;line-height:1.02;
  font-size:clamp(2rem,4.6vw,3.4rem);text-wrap:balance;
}
.section__sub{color:var(--muted);margin-top:16px;font-size:1.02rem;max-width:620px}

.accent-line{position:relative;color:var(--accent)}

/* ---------- nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:20;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:16px clamp(16px,4vw,40px);
  transition:background .3s,border-color .3s,padding .3s;
  border-bottom:1px solid transparent;
}
.nav.is-scrolled{
  background:rgba(10,10,11,.72);backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);border-bottom-color:var(--line);padding-top:12px;padding-bottom:12px;
}
.nav__brand{font-family:var(--display);font-weight:700;font-size:1.05rem;color:var(--ink);text-decoration:none;letter-spacing:-.01em}
.nav__mark{color:var(--accent);font-size:.8em}
.nav__links{display:flex;gap:26px}
.nav__links a{font-size:.9rem;color:var(--muted);text-decoration:none;transition:color .2s;position:relative}
.nav__links a:hover{color:var(--ink)}
.nav__links a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:1px;background:var(--accent);transition:width .25s var(--ease)}
.nav__links a:hover::after{width:100%}
.nav__cta{
  font-size:.86rem;text-decoration:none;color:var(--ink);border:1px solid var(--line-2);
  padding:8px 16px;border-radius:999px;transition:all .2s;
}
.nav__cta:hover{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
@media(max-width:720px){.nav__links{display:none}}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  max-width:var(--maxw);margin:0 auto;padding:120px 24px 80px}
.hero__inner{max-width:940px}
.eyebrow{
  font-family:var(--mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);display:inline-flex;align-items:center;gap:10px;margin-bottom:28px;
}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 rgba(205,245,70,.5);animation:pulse 2.4s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(205,245,70,.45)}70%{box-shadow:0 0 0 10px rgba(205,245,70,0)}100%{box-shadow:0 0 0 0 rgba(205,245,70,0)}}

.hero__title{font-family:var(--display);font-weight:800;letter-spacing:-.03em;line-height:.98;
  font-size:clamp(2.7rem,8vw,6.2rem);margin-bottom:30px}
.hero__title span{display:block}
.hero__title em{font-style:italic;font-weight:600}
.hero__lead{max-width:660px;color:#c9c9c2;font-size:clamp(1.02rem,1.7vw,1.22rem);line-height:1.6}
.hero__lead strong{color:var(--ink);font-weight:600}

.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}
.btn{font-family:var(--sans);font-size:.95rem;font-weight:500;text-decoration:none;
  padding:13px 22px;border-radius:999px;display:inline-flex;align-items:center;gap:9px;
  transition:transform .2s var(--ease),background .2s,border-color .2s,color .2s;border:1px solid transparent}
.btn:hover{transform:translateY(-2px)}
.btn--primary{background:var(--accent);color:var(--accent-ink);font-weight:600}
.btn--primary:hover{box-shadow:0 12px 34px -12px rgba(205,245,70,.6)}
.btn--primary .arr{transition:transform .25s var(--ease)}
.btn--primary:hover .arr{transform:translateX(4px)}
.btn--ghost{border-color:var(--line-2);color:var(--ink)}
.btn--ghost:hover{border-color:var(--ink);background:var(--card-hi)}

.stats{display:grid;grid-template-columns:repeat(4,auto);gap:clamp(24px,5vw,64px);margin-top:56px;justify-content:start}
.stat dt{font-family:var(--display);font-weight:700;font-size:clamp(1.8rem,4vw,2.6rem);line-height:1;letter-spacing:-.02em}
.stat dd{font-family:var(--mono);font-size:.72rem;letter-spacing:.04em;color:var(--muted);text-transform:uppercase;margin-top:10px;line-height:1.5}
@media(max-width:640px){.stats{grid-template-columns:repeat(2,1fr);gap:28px}}

.scroll-hint{position:absolute;bottom:30px;left:24px;font-family:var(--mono);font-size:.68rem;letter-spacing:.2em;
  text-transform:uppercase;color:var(--faint);text-decoration:none;display:flex;align-items:center;gap:12px}
.scroll-hint span{width:1px;height:34px;background:linear-gradient(var(--accent),transparent);display:block;animation:drop 2s infinite}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

.hero__portrait{position:absolute;top:112px;right:clamp(24px,6vw,80px);width:clamp(160px,16vw,220px);
  aspect-ratio:2/3;border-radius:16px;overflow:hidden;border:1px solid var(--line-2);
  box-shadow:0 30px 60px -20px rgba(0,0,0,.7);transform:rotate(2deg);z-index:1}
.hero__portrait img{width:100%;height:100%;object-fit:cover;display:block;
  filter:grayscale(1) contrast(1.05) brightness(.92);transition:filter .5s var(--ease)}
.hero__portrait:hover img{filter:grayscale(0) contrast(1.02) brightness(1)}
.hero__portrait::after{content:"";position:absolute;inset:0;border-radius:16px;pointer-events:none;
  background:linear-gradient(160deg,rgba(205,245,70,.14),transparent 55%)}
@media(max-width:900px){.hero__portrait{display:none}}

/* ---------- work grid ---------- */
.work{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
@media(max-width:820px){.work{grid-template-columns:1fr}}
.card{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:20px;
  padding:clamp(24px,3vw,34px);overflow:hidden;transition:border-color .3s,transform .3s var(--ease),background .3s;
}
.card::before{content:"";position:absolute;inset:0;border-radius:20px;padding:1px;pointer-events:none;
  background:linear-gradient(135deg,rgba(205,245,70,.35),transparent 40%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .3s}
.card:hover{transform:translateY(-4px);background:var(--card-hi);border-color:var(--line-2)}
.card:hover::before{opacity:1}
.card--feature{grid-column:1/-1}
.card--muted{opacity:.9}
.card__meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:18px}
.tag{font-family:var(--mono);font-size:.66rem;letter-spacing:.08em;text-transform:uppercase;
  color:var(--muted);border:1px solid var(--line-2);padding:5px 10px;border-radius:999px}
.tag--live{color:var(--accent);border-color:rgba(205,245,70,.4)}
.role{font-family:var(--mono);font-size:.72rem;color:var(--faint);letter-spacing:.02em}
.card__title{font-family:var(--display);font-weight:700;letter-spacing:-.02em;line-height:1.05;
  font-size:clamp(1.5rem,3vw,2.15rem);margin-bottom:14px}
.card--feature .card__title{font-size:clamp(2rem,5vw,3rem)}
.card__desc{color:var(--muted);font-size:.98rem;line-height:1.62;max-width:64ch}
.card__desc b{color:var(--ink);font-weight:600}
.note{display:block;margin-top:10px;font-size:.82rem;color:var(--faint);font-style:italic}

.metrics{list-style:none;display:flex;flex-wrap:wrap;gap:26px;margin:22px 0 4px;
  padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.metrics li{font-family:var(--mono);font-size:.76rem;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.metrics b{display:block;font-family:var(--display);font-size:1.7rem;color:var(--ink);letter-spacing:-.02em;margin-bottom:3px}

.chips{list-style:none;display:flex;flex-wrap:wrap;gap:7px;margin-top:20px}
.chips li{font-family:var(--mono);font-size:.72rem;color:var(--muted);
  background:rgba(255,255,255,.03);border:1px solid var(--line);padding:5px 10px;border-radius:7px}
/* product screenshot inside a card */
.card__shot{margin:18px 0 0}
.card__shot img{display:block;width:100%;height:auto;border-radius:12px;border:1px solid var(--line)}
.card__shot figcaption{margin-top:8px;font-size:.8rem;color:var(--muted)}
.card__note-inline{font-size:.85rem;color:var(--muted)}

.card__links{display:flex;flex-wrap:wrap;gap:20px;margin-top:22px;align-items:baseline}
.card__links a{font-size:.88rem;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--accent);
  padding-bottom:2px;transition:color .2s,opacity .2s}
.card__links a:hover{color:var(--accent)}

/* ---------- approach steps ---------- */
.section--approach{position:relative}
.steps{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:16px;counter-reset:s}
@media(max-width:820px){.steps{grid-template-columns:1fr}}
.step{position:relative;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px;
  transition:transform .3s var(--ease),border-color .3s}
.step:hover{transform:translateY(-3px);border-color:var(--line-2)}
.step__n{font-family:var(--display);font-weight:800;font-size:2.4rem;color:var(--accent);line-height:1;display:block;margin-bottom:14px;opacity:.9}
.step p{color:var(--muted);font-size:.96rem;line-height:1.55}

/* ---------- stack ---------- */
.stack{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:820px){.stack{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.stack{grid-template-columns:1fr}}
.stack__group{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px;transition:border-color .3s}
.stack__group:hover{border-color:var(--line-2)}
.stack__group h4{font-family:var(--mono);font-size:.74rem;text-transform:uppercase;letter-spacing:.1em;color:var(--accent);margin-bottom:16px;font-weight:500}
.stack__group ul{list-style:none;display:flex;flex-wrap:wrap;gap:7px}
.stack__group li{font-size:.86rem;color:var(--ink);background:rgba(255,255,255,.03);border:1px solid var(--line);padding:5px 11px;border-radius:8px}

/* ---------- split (experience + 90 days) ---------- */
.section--split{max-width:var(--maxw)}
.split{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(30px,5vw,70px)}
@media(max-width:820px){.split{grid-template-columns:1fr}}
.timeline{list-style:none;margin-top:26px;border-left:1px solid var(--line)}
.timeline li{position:relative;padding:0 0 30px 26px}
.timeline li::before{content:"";position:absolute;left:-5px;top:6px;width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--bg)}
.timeline__when{font-family:var(--mono);font-size:.72rem;color:var(--faint);letter-spacing:.04em}
.timeline h4{font-family:var(--display);font-weight:600;font-size:1.12rem;margin:6px 0 6px;letter-spacing:-.01em}
.timeline p{color:var(--muted);font-size:.92rem;line-height:1.55}
.ninety{margin-top:26px;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:28px}
.ninety__lead{font-family:var(--display);font-size:1.2rem;margin-bottom:16px}
.ninety ul{list-style:none;display:grid;gap:14px}
.ninety li{position:relative;padding-left:22px;color:var(--muted);font-size:.94rem;line-height:1.5}
.ninety li::before{content:"→";position:absolute;left:0;color:var(--accent)}
.ninety__roles{margin-top:22px;padding-top:20px;border-top:1px solid var(--line);font-size:.9rem;color:var(--ink)}
.ninety__roles span{display:block;font-family:var(--mono);font-size:.68rem;text-transform:uppercase;letter-spacing:.1em;color:var(--faint);margin-bottom:8px}

/* ---------- contact ---------- */
.section--contact{text-align:left}
.contact__title{font-family:var(--display);font-weight:800;letter-spacing:-.03em;line-height:1;
  font-size:clamp(2.4rem,7vw,5rem);margin:14px 0 18px}
.contact__sub{color:var(--muted)}
.contact__intro{display:flex;align-items:center;gap:28px;margin-bottom:40px}
.contact__intro .contact__title{margin:0 0 10px}
.contact__photo{width:88px;height:88px;border-radius:50%;object-fit:cover;flex-shrink:0;
  border:2px solid var(--accent);box-shadow:0 12px 30px -10px rgba(205,245,70,.4)}
@media(max-width:560px){.contact__intro{flex-direction:column;align-items:flex-start;gap:18px}
  .contact__photo{width:72px;height:72px}}
.contact__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;max-width:820px}
@media(max-width:720px){.contact__grid{grid-template-columns:1fr}}
.contact__item{display:flex;flex-direction:column;gap:8px;text-decoration:none;
  background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px 24px;transition:all .25s var(--ease)}
.contact__item:hover{border-color:var(--accent);transform:translateY(-3px);background:var(--card-hi)}
.contact__k{font-family:var(--mono);font-size:.68rem;text-transform:uppercase;letter-spacing:.12em;color:var(--faint)}
.contact__v{font-family:var(--display);font-size:1.15rem;color:var(--ink)}
.foot{max-width:var(--maxw);margin:60px auto 0;padding:26px 0 0;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-family:var(--mono);font-size:.72rem;color:var(--faint);letter-spacing:.03em}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .8s var(--ease) var(--d,0s),transform .8s var(--ease) var(--d,0s)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}
  .eyebrow .dot,.scroll-hint span{animation:none}}

/* ---------- chat widget ---------- */
.chat-root{position:fixed;right:20px;bottom:20px;z-index:40}
.chat-fab{width:56px;height:56px;border-radius:50%;border:1px solid var(--line-2);
  background:var(--accent);color:var(--accent-ink);font-size:1.3rem;cursor:pointer;
  box-shadow:0 12px 30px -10px rgba(205,245,70,.55);transition:transform .25s var(--ease)}
.chat-fab:hover{transform:scale(1.06)}
.chat-fab__icon{display:inline-block;transform:translateY(-1px)}

.chat-panel{position:fixed;right:20px;bottom:88px;width:min(360px,calc(100vw - 40px));
  max-height:min(520px,calc(100dvh - 140px));display:flex;flex-direction:column;
  background:#101116;border:1px solid var(--line-2);border-radius:18px;overflow:hidden;
  box-shadow:0 30px 60px -20px rgba(0,0,0,.6);
  opacity:0;transform:translateY(12px) scale(.98);pointer-events:none;
  transition:opacity .25s var(--ease),transform .25s var(--ease)}
.chat-panel.is-open{opacity:1;transform:none;pointer-events:auto}

.chat-panel__head{display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;border-bottom:1px solid var(--line);font-family:var(--display);font-size:.98rem}
.chat-close{background:none;border:none;color:var(--muted);font-size:1.3rem;line-height:1;cursor:pointer;padding:2px 6px}
.chat-close:hover{color:var(--ink)}

.chat-log{flex:1;overflow-y:auto;padding:14px 16px;display:flex;flex-direction:column;gap:10px;min-height:120px}
.chat-msg{max-width:85%;padding:9px 13px;border-radius:12px;font-size:.88rem;line-height:1.45}
.chat-msg--bot{align-self:flex-start;background:rgba(255,255,255,.06);color:var(--ink);border-bottom-left-radius:4px}
.chat-msg--user{align-self:flex-end;background:var(--accent);color:var(--accent-ink);border-bottom-right-radius:4px;font-weight:500}

.chat-chips{display:flex;flex-wrap:wrap;gap:6px;padding:0 16px 12px}
.chat-chip{font-family:var(--sans);font-size:.76rem;color:var(--ink);background:rgba(255,255,255,.05);
  border:1px solid var(--line);padding:6px 10px;border-radius:999px;cursor:pointer;transition:border-color .2s}
.chat-chip:hover{border-color:var(--accent)}

.chat-form{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--line)}
.chat-input{flex:1;background:rgba(255,255,255,.04);border:1px solid var(--line-2);border-radius:10px;
  padding:9px 12px;color:var(--ink);font-family:var(--sans);font-size:.88rem}
.chat-input:focus{outline:none;border-color:var(--accent)}
.chat-send{width:38px;height:38px;border-radius:10px;border:none;background:var(--accent);
  color:var(--accent-ink);font-size:1rem;cursor:pointer;flex-shrink:0}

.chat-tg{display:block;text-align:center;padding:11px;font-size:.84rem;color:var(--accent);
  text-decoration:none;border-top:1px solid var(--line);background:rgba(205,245,70,.05)}
.chat-tg:hover{background:rgba(205,245,70,.1)}

@media(max-width:480px){.chat-root{right:14px;bottom:14px}.chat-panel{right:14px;bottom:80px}}