/* ==========================================================================
   jamshiddin.me — "Ledger" design. Dark, technical, precise.
   No build step. Tokens at the top; sections follow page order.
   ========================================================================== */
:root{
  --bg:#0b0c0e;
  --bg-1:#101215;
  --bg-2:#15181c;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --fg:#ececea;
  --fg-2:#a7aaa8;
  --fg-3:#7d817f;
  --accent:#4ef0c4;
  --accent-dim:rgba(78,240,196,.14);
  --sans:"Instrument Sans",ui-sans-serif,system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --gutter:clamp(20px,4vw,56px);
  --max:1280px;
  color-scheme:dark;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:72px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}
body{
  background:var(--bg);color:var(--fg);font-family:var(--sans);
  font-size:16px;line-height:1.55;font-feature-settings:"tnum","ss01";
  -webkit-font-smoothing:antialiased;position:relative;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.55;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 90% 60% at 50% 0%,#000 0%,transparent 70%);
  -webkit-mask-image:radial-gradient(ellipse 90% 60% at 50% 0%,#000 0%,transparent 70%);
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.035;
  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='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
a{color:inherit;text-decoration:none}
.wrap{position:relative;z-index:1;max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
.mono{font-family:var(--mono);font-size:12px;letter-spacing:.02em}
.label{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--fg-3)}
.idx{font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--fg-3)}
.ul{color:var(--fg);border-bottom:1px solid var(--line-2);transition:border-color .2s,color .2s}
.ul:hover{border-color:var(--accent);color:var(--accent)}
.ext::after{content:"↗";display:inline-block;margin-left:.35em;font-family:var(--mono);font-size:.85em;color:var(--fg-3);transition:transform .2s,color .2s}
.ext:hover::after{transform:translate(2px,-2px);color:var(--accent)}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(11,12,14,.82);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:56px;gap:16px}
.brand{display:flex;align-items:center;gap:12px;font-weight:600;letter-spacing:-.01em;font-size:15px}
.star{width:18px;height:18px;color:var(--accent);flex:none}
.nav ul{display:flex;gap:28px;list-style:none}
.nav ul a{font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--fg-2);transition:color .2s}
.nav ul a:hover,.nav ul a.is-active{color:var(--fg)}
.nav ul a.is-active span{color:var(--accent)}
.nav ul a span{color:var(--fg-3);margin-right:.5em}
.clock{display:flex;align-items:center;gap:9px;font-family:var(--mono);font-size:12px;color:var(--fg-2);white-space:nowrap}
.dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px var(--accent-dim);animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 3px var(--accent-dim)}50%{box-shadow:0 0 0 6px rgba(78,240,196,.06)}}
@media (max-width:860px){
  .nav .wrap{flex-wrap:wrap;height:auto;padding-top:10px;padding-bottom:0;row-gap:6px}
  .nav nav{order:3;flex-basis:100%;margin:0 calc(-1 * var(--gutter));padding:0 var(--gutter);overflow-x:auto;scrollbar-width:none;-webkit-mask-image:linear-gradient(90deg,#000 85%,transparent);mask-image:linear-gradient(90deg,#000 85%,transparent)}
  .nav nav::-webkit-scrollbar{display:none}
  .nav ul{gap:22px;white-space:nowrap}
  .nav ul a{display:inline-block;padding:10px 0 12px;font-size:12px}
  html{scroll-padding-top:100px}
}

/* ---------- hero ---------- */
.hero{padding:clamp(72px,10vw,140px) 0 clamp(56px,7vw,96px);border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:clamp(32px,6vw,96px);align-items:end}
.kicker{display:flex;flex-wrap:wrap;gap:0 12px;font-family:var(--mono);font-size:12px;color:var(--fg-2);margin-bottom:clamp(28px,4vw,44px);letter-spacing:.02em}
.kicker b{font-weight:500;color:var(--fg)}
.kicker i{font-style:normal;color:var(--fg-3)}
h1{font-size:clamp(40px,6.4vw,88px);line-height:.98;letter-spacing:-.035em;font-weight:600;max-width:13ch;text-wrap:balance}
h1 em{font-style:normal;color:var(--fg-3)}
.hero .sub{font-size:clamp(16px,1.4vw,19px);line-height:1.55;color:var(--fg-2);max-width:56ch;margin-top:clamp(24px,3vw,36px)}
.ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:clamp(28px,4vw,44px)}
.btn{display:inline-flex;align-items:center;gap:10px;height:44px;padding:0 20px;border:1px solid var(--line-2);border-radius:4px;font-size:14px;font-weight:500;transition:border-color .2s,background .2s,color .2s,transform .2s}
.btn .idx{color:inherit;opacity:.55}
.btn-primary{background:var(--fg);color:var(--bg);border-color:var(--fg)}
.btn-primary:hover{background:var(--accent);border-color:var(--accent)}
.btn-ghost:hover{border-color:var(--fg-2);background:var(--bg-1)}
.spec{border-top:1px solid var(--line);font-family:var(--mono);font-size:12px}
.spec div{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px solid var(--line)}
.spec dt{color:var(--fg-3)}
.spec dd{color:var(--fg);text-align:right}
.spec .live{color:var(--accent)}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr}.spec{margin-top:8px}}

/* ---------- proof strip ---------- */
.proof{border-bottom:1px solid var(--line)}
.proof .wrap{display:grid;grid-template-columns:repeat(3,1fr)}
.proof .cell{padding:32px 28px 30px 0;border-right:1px solid var(--line);position:relative}
.proof .cell + .cell{padding-left:28px}
.proof .cell:last-child{border-right:0}
.proof .idx{display:block;margin-bottom:18px}
.proof .val{font-size:clamp(28px,2.6vw,40px);font-weight:600;letter-spacing:-.03em;line-height:1;font-variant-numeric:tabular-nums;white-space:nowrap}
.proof .val small{font-size:.55em;color:var(--fg-3);font-weight:500;letter-spacing:0}
.proof .lbl{font-size:13px;color:var(--fg-2);margin-top:12px;line-height:1.45;max-width:24ch}
@media (max-width:900px){
  .proof .wrap{grid-template-columns:1fr}
  .proof .cell{padding:22px 0;border-right:0;border-bottom:1px solid var(--line)}
  .proof .cell + .cell{padding-left:0}
  .proof .cell:last-child{border-bottom:0}
  .proof .lbl{max-width:40ch}
}
@media (max-width:420px){.proof .val{font-size:26px}}

/* ---------- sections ---------- */
.section{padding:clamp(64px,8vw,120px) 0;border-bottom:1px solid var(--line)}
.sec-head{display:grid;grid-template-columns:200px 1fr;gap:24px;align-items:baseline;margin-bottom:clamp(36px,5vw,64px)}
.sec-head .idx{display:flex;gap:14px;align-items:center}
.sec-head .idx::after{content:"";flex:1;height:1px;background:var(--line-2);max-width:80px}
.sec-head h2{font-size:clamp(28px,3.4vw,44px);letter-spacing:-.03em;line-height:1.1;font-weight:600;max-width:22ch;text-wrap:balance}
.sec-head p{color:var(--fg-2);max-width:60ch;margin-top:16px;font-size:16px}
.sec-head p.fine{font-family:var(--mono);font-size:12px;color:var(--fg-3);margin-top:14px}
@media (max-width:760px){.sec-head{grid-template-columns:1fr;gap:14px}}

/* ---------- work ---------- */
.work-list{border-top:1px solid var(--line-2)}
.entry{display:grid;grid-template-columns:200px 1fr;gap:24px;padding:clamp(36px,4vw,56px) 0;border-bottom:1px solid var(--line);position:relative}
.entry::before{content:"";position:absolute;left:0;top:-1px;height:1px;width:0;background:var(--accent);transition:width .5s cubic-bezier(.2,.7,.2,1)}
.entry:hover::before{width:100%}
.entry .aside{display:flex;flex-direction:column;gap:10px;position:sticky;top:80px;align-self:start}
.entry .aside .idx{font-size:12px}
.entry .aside .period{font-family:var(--mono);font-size:12px;color:var(--fg-2)}
.entry .status{display:flex;align-items:flex-start;gap:8px;font-family:var(--mono);font-size:11px;line-height:1.5;color:var(--fg-3);margin-top:6px}
.entry .status .dot{width:6px;height:6px;margin-top:6px;animation:none;box-shadow:none;flex:none}
.entry .status .dot.off{background:var(--fg-3)}
.entry h3{font-size:clamp(26px,3vw,40px);letter-spacing:-.03em;line-height:1.05;font-weight:600}
.entry h3 a{transition:color .2s}
.entry h3 a:hover{color:var(--accent)}
.entry .role{font-size:14px;color:var(--fg-2);margin-top:8px}
.entry .one{font-size:clamp(16px,1.3vw,18px);color:var(--fg);margin-top:22px;max-width:64ch;line-height:1.55}
.entry .one q{color:var(--fg-2);quotes:"“" "”"}
.body-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:40px;margin-top:32px}
.did{list-style:none;counter-reset:d;border-top:1px solid var(--line)}
.did li{counter-increment:d;display:block;position:relative;padding:11px 0 11px 44px;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--fg-2);line-height:1.5}
.did li::before{content:counter(d,decimal-leading-zero);position:absolute;left:0;top:15px;font-family:var(--mono);font-size:11px;color:var(--fg-3);letter-spacing:.08em}
.did li strong{color:var(--fg);font-weight:500}
.metrics{border-top:1px solid var(--line)}
.metrics div{display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-size:13px}
.metrics dt{color:var(--fg-3);font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;padding-top:2px}
.metrics dd{font-family:var(--mono);font-size:13px;color:var(--fg);text-align:right;font-variant-numeric:tabular-nums}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:20px}
.tags span{font-family:var(--mono);font-size:11px;color:var(--fg-2);padding:4px 8px;border:1px solid var(--line);border-radius:3px;transition:border-color .2s,color .2s}
.entry:hover .tags span{border-color:var(--line-2)}
.links{display:flex;flex-wrap:wrap;gap:20px;margin-top:22px;font-family:var(--mono);font-size:12px}
.entry.featured{background:linear-gradient(180deg,var(--bg-1),transparent 60%);margin:0 calc(-1 * var(--gutter));padding-left:var(--gutter);padding-right:var(--gutter)}
.entry.featured h3{font-size:clamp(32px,4.2vw,56px)}
.entry.featured .one{max-width:70ch}
.big{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line-2);border-radius:4px;margin-top:28px;background:var(--bg-1)}
.big div{padding:18px 18px 16px;border-right:1px solid var(--line)}
.big div:last-child{border-right:0}
.big .v{font-size:clamp(24px,2.4vw,34px);font-weight:600;letter-spacing:-.03em;line-height:1;font-variant-numeric:tabular-nums;white-space:nowrap}
.big .v small{font-size:.5em;color:var(--fg-3);font-weight:500;letter-spacing:0}
.big .k{display:block;margin-top:10px;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--fg-3)}
@media (max-width:640px){.big{grid-template-columns:1fr}.big div{border-right:0;border-bottom:1px solid var(--line)}.big div:last-child{border-bottom:0}}
.entry.minor{padding:28px 0}
.entry.minor h3{font-size:22px}
.entry.minor .one{font-size:15px;margin-top:12px;color:var(--fg-2)}
.entry.minor .note{font-family:var(--mono);font-size:12px;color:var(--fg-3);margin-top:14px}
@media (max-width:900px){
  .entry{grid-template-columns:1fr;gap:18px}
  .entry .aside{position:static;flex-direction:row;flex-wrap:wrap;align-items:center;gap:10px 18px}
  .entry .status{margin-top:0;width:100%}
  .body-grid{grid-template-columns:1fr;gap:28px}
}

/* ---------- services ---------- */
.svc{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line-2);border-left:1px solid var(--line)}
.svc article{padding:32px 32px 36px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);position:relative;transition:background .25s}
.svc article:hover{background:var(--bg-1)}
.svc article::after{content:"";position:absolute;right:-1px;top:-1px;width:6px;height:6px;border-top:1px solid var(--fg-3);border-right:1px solid var(--fg-3);opacity:0;transition:opacity .2s}
.svc article:hover::after{opacity:1;border-color:var(--accent)}
.svc .idx{display:block;margin-bottom:28px}
.svc h3{font-size:22px;letter-spacing:-.02em;font-weight:600;line-height:1.2;max-width:20ch}
.svc p{color:var(--fg-2);font-size:15px;margin-top:14px;line-height:1.6}
.svc p b{color:var(--fg);font-weight:500}
@media (max-width:760px){.svc{grid-template-columns:1fr}.svc article{padding:26px 20px 30px}}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:200px minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,4vw,64px)}
.about-grid > .idx,.contact-grid > .idx{display:flex;gap:14px;align-items:center;align-self:start}.about-grid > .idx::after,.contact-grid > .idx::after{content:"";flex:1;height:1px;background:var(--line-2);max-width:80px}
.about h2{font-size:clamp(28px,3.4vw,44px);letter-spacing:-.03em;line-height:1.1;font-weight:600;margin-bottom:28px}
.about p{color:var(--fg-2);font-size:16px;line-height:1.65}
.about p + p{margin-top:18px}
.about p strong{color:var(--fg);font-weight:500}
.principles{border-top:1px solid var(--line-2)}
.principles .label{display:block;padding:14px 0 0}
.pr{display:grid;grid-template-columns:36px minmax(0,1fr);gap:10px;padding:22px 0;border-bottom:1px solid var(--line)}
.pr .idx{padding-top:5px}
.pr h4{font-size:17px;font-weight:600;letter-spacing:-.01em}
.pr p{font-size:14.5px;margin-top:8px}
@media (max-width:1000px){.about-grid{grid-template-columns:200px 1fr}.principles{grid-column:2}}
@media (max-width:760px){.about-grid{grid-template-columns:1fr}.principles{grid-column:1}}

/* ---------- stack ---------- */
.stack{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--line-2)}
.stack .col{padding:24px 20px 28px 0;border-right:1px solid var(--line)}
.stack .col + .col{padding-left:20px}
.stack .col:last-child{border-right:0}
.stack .label{display:block;margin-bottom:18px;color:var(--fg-2)}
.stack .label i{font-style:normal;color:var(--fg-3);margin-right:.6em}
.stack ul{list-style:none}
.stack li{font-family:var(--mono);font-size:12.5px;color:var(--fg-2);padding:7px 0;border-bottom:1px solid var(--line);transition:color .2s}
.stack li:hover{color:var(--fg)}
@media (max-width:1000px){
  .stack{grid-template-columns:repeat(3,1fr)}
  .stack .col:nth-child(3){border-right:0}
  .stack .col:nth-child(4){padding-left:0;border-top:1px solid var(--line)}
  .stack .col:nth-child(5){border-top:1px solid var(--line);border-right:0}
  .stack .col:nth-child(-n+3){border-bottom:0}
}
@media (max-width:640px){
  .stack{grid-template-columns:1fr 1fr}
  .stack .col{border-right:0!important;padding:20px 0 22px!important;border-top:1px solid var(--line)}
  .stack .col:nth-child(odd){padding-right:18px!important;border-right:1px solid var(--line)!important}
  .stack .col:nth-child(even){padding-left:18px!important}
  .stack .col:nth-child(-n+2){border-top:0}
  .stack .col:last-child{grid-column:1 / -1;border-right:0!important;padding-right:0!important}
}

/* ---------- contact ---------- */
.contact{padding:clamp(80px,10vw,140px) 0}
.contact-grid{display:grid;grid-template-columns:200px minmax(0,1fr) 300px;gap:clamp(24px,4vw,64px)}
.contact h2{font-size:clamp(32px,4.4vw,60px);letter-spacing:-.035em;line-height:1.02;font-weight:600;max-width:16ch;text-wrap:balance}
.contact p{color:var(--fg-2);max-width:58ch;margin-top:24px;font-size:16px;line-height:1.65}
.mail{display:inline-block;margin-top:36px;font-family:var(--mono);font-size:clamp(15px,1.6vw,20px);color:var(--fg);border-bottom:1px solid var(--line-2);padding-bottom:6px;transition:color .2s,border-color .2s;word-break:break-all}
.mail:hover{color:var(--accent);border-color:var(--accent)}
.chan{border-top:1px solid var(--line-2);align-self:start}
.chan a{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);font-family:var(--mono);font-size:12.5px;color:var(--fg-2);transition:color .2s}
.chan a:hover{color:var(--fg)}
.chan a .r{color:var(--fg-3);font-size:11px;letter-spacing:.08em;text-transform:uppercase;white-space:nowrap}
.chan a .u{display:block;color:var(--fg-3);font-size:11px;margin-top:3px;letter-spacing:0;text-transform:none;word-break:break-all}
.chan a:hover .u{color:var(--fg-2)}
.chan a:hover .r{color:var(--accent)}
@media (max-width:1000px){.contact-grid{grid-template-columns:200px 1fr}.chan{grid-column:2;margin-top:12px}}
@media (max-width:760px){.contact-grid{grid-template-columns:1fr}.chan{grid-column:1;margin-top:8px}}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:28px 0 40px}
footer .wrap{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;font-family:var(--mono);font-size:11.5px;color:var(--fg-3);line-height:1.6}
footer .wrap p{max-width:70ch}
footer .star{width:14px;height:14px;color:var(--fg-3)}
footer .up:hover{color:var(--fg)}

::selection{background:var(--accent);color:var(--bg)}

/* ---------- 404 ---------- */
.nf{min-height:calc(100vh - 57px);display:grid;align-content:center;padding:80px 0}
.nf h1{max-width:16ch}