/* ============================================================
   oshanreh.com — dusk navy + signal amber over the live
   Seattle network canvas.
   ============================================================ */

:root{
  --bg:#070b15;
  --bg-soft:#0b1222;
  --head:#f3f6fc;
  --body:#aeb9cd;
  --muted:#6d7a96;
  --amber:#f6a83c;
  --amber-soft:#ffc46b;
  --hairline:rgba(150,180,240,.12);
  --card:rgba(10,16,31,.82);
  --card-solid:#0c1426;
  --mono:'JetBrains Mono',ui-monospace,monospace;
  --disp:'Bricolage Grotesque',sans-serif;
  --sans:'Figtree',system-ui,sans-serif;
  --pad:clamp(20px,4.5vw,48px);
  --maxw:1140px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{
  background:transparent; /* body bg would paint over the z-index:-2 canvas */
  font-family:var(--sans);
  font-size:16.5px;line-height:1.65;
  color:var(--body);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
::selection{background:rgba(246,168,60,.28);color:var(--head)}
h1,h2,h3{font-family:var(--disp);color:var(--head);line-height:1.12;text-wrap:balance}
a{color:var(--amber-soft);text-decoration:none}
a:hover{color:#ffd79a}
img{max-width:100%;display:block}
b,strong{color:var(--head);font-weight:600}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px;border-radius:4px}

/* ---- the network canvas + readability veil ---- */
#net{
  position:fixed;inset:0;width:100vw;height:100vh;
  z-index:-2;display:block;background:var(--bg);
}
.veil{
  position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(120% 90% at 50% 0%, rgba(7,11,21,0) 0%, rgba(7,11,21,.14) 60%, rgba(7,11,21,.4) 100%),
    linear-gradient(180deg, rgba(7,11,21,.35) 0%, rgba(7,11,21,0) 18%, rgba(7,11,21,0) 75%, rgba(7,11,21,.38) 100%);
}

.skip{
  position:fixed;left:14px;top:-48px;z-index:200;
  background:var(--card-solid);color:var(--head);
  padding:9px 16px;border-radius:8px;border:1px solid var(--hairline);
  transition:top .2s;
}
.skip:focus{top:14px}

/* ---- nav ---- */
#nav{
  position:fixed;inset:0 0 auto 0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px var(--pad);
  transition:background .35s,border-color .35s,padding .35s;
  border-bottom:1px solid transparent;
}
#nav.scrolled{
  background:rgba(7,11,21,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--hairline);
  padding-top:10px;padding-bottom:10px;
}
.logo{
  font-family:var(--mono);font-size:15px;color:var(--head);letter-spacing:.02em;
}
.logo b{color:var(--amber);font-weight:500}
#nav-menu{display:flex;gap:4px;list-style:none}
#nav-menu a{
  position:relative;display:block;
  font-size:13.5px;font-weight:500;letter-spacing:.03em;
  color:var(--body);padding:7px 13px;border-radius:99px;
  transition:color .2s,background .2s;
}
#nav-menu a:hover{color:var(--head)}
#nav-menu a.active{
  color:var(--head);
  background:rgba(246,168,60,.10);
  box-shadow:inset 0 0 0 1px rgba(246,168,60,.28);
}
.nav-toggle{display:none;color:var(--head);padding:6px}
.nav-toggle svg{width:24px;height:24px;display:block}

@media(max-width:880px){
  .nav-toggle{display:block}
  #nav-menu{
    position:absolute;top:100%;right:var(--pad);
    flex-direction:column;gap:2px;min-width:200px;
    background:rgba(9,14,27,.96);backdrop-filter:blur(16px);
    border:1px solid var(--hairline);border-radius:14px;
    padding:8px;
    opacity:0;visibility:hidden;transform:translateY(-6px);
    transition:opacity .2s,transform .2s,visibility .2s;
  }
  #nav-menu.open{opacity:1;visibility:visible;transform:none}
  #nav-menu a{padding:10px 14px}
}

/* ---- scroll progress ---- */
.scroll-progress{
  position:fixed;top:0;left:0;height:2px;width:0;z-index:101;
  background:linear-gradient(90deg,var(--amber),var(--amber-soft));
  box-shadow:0 0 12px rgba(246,168,60,.6);
}

/* ---- main / page transitions ---- */
main{
  display:block;max-width:var(--maxw);margin:0 auto;
  padding:0 var(--pad) 40px;
  transition:opacity .19s ease,transform .19s ease;
}
main.leaving{opacity:0;transform:translateY(10px)}
main.entering{opacity:0;transform:translateY(-8px);transition:none}

section{padding:clamp(36px,7vh,72px) 0}
section.first{padding-top:clamp(20px,4vh,40px)}

/* ---- hero (home) ---- */
.hero{
  min-height:92vh;display:flex;flex-direction:column;justify-content:center;
  padding:120px 0 40px;
}
.eyebrow{
  font-family:var(--mono);font-size:12.5px;font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;color:var(--amber);
  margin-bottom:18px;
}
.hero h1{
  font-size:clamp(38px,6.4vw,76px);font-weight:800;letter-spacing:-.02em;
  max-width:13ch;margin-bottom:24px;
}
.hero h1 .accent,h1 .accent{color:var(--amber)}
.hero>p{max-width:580px;font-size:clamp(16px,1.6vw,18.5px);color:var(--body)}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
.btn{
  display:inline-block;font-weight:600;font-size:14.5px;letter-spacing:.02em;
  padding:13px 26px;border-radius:99px;transition:transform .2s,box-shadow .2s,background .2s;
}
.btn-amber{
  background:linear-gradient(135deg,var(--amber),#e08f1f);color:#1a1206;
  box-shadow:0 4px 24px rgba(246,168,60,.25);
}
.btn-amber:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(246,168,60,.4);color:#1a1206}
.btn-ghost{
  color:var(--head);box-shadow:inset 0 0 0 1px var(--hairline);
  background:rgba(11,18,34,.4);
}
.btn-ghost:hover{box-shadow:inset 0 0 0 1px rgba(246,168,60,.5);transform:translateY(-2px)}

.scroll-cue{
  position:absolute;left:50%;bottom:30px;transform:translateX(-50%);
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--muted);animation:cue 2.4s ease-in-out infinite;
}
@keyframes cue{50%{transform:translate(-50%,8px);opacity:.5}}

/* ---- page hero (subpages) ---- */
.phero{padding:clamp(130px,20vh,190px) 0 clamp(10px,2vh,26px)}
.phero h1{font-size:clamp(32px,5vw,58px);font-weight:800;letter-spacing:-.015em;max-width:18ch;margin-bottom:18px}
.phero>p{max-width:620px;font-size:17px}
/* ---- section heads ---- */
.sec-head{display:flex;align-items:baseline;gap:18px;margin-bottom:30px}
.sec-head h2{font-size:clamp(22px,3vw,30px);font-weight:700;letter-spacing:-.01em}
.sec-head::after{content:"";flex:1;height:1px;background:var(--hairline)}
.lead{font-size:17px;max-width:640px}

/* ---- cards ---- */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:880px){.grid-3{grid-template-columns:1fr}.grid-2{grid-template-columns:1fr}}
.card{
  background:var(--card);
  border:1px solid var(--hairline);border-radius:18px;
  padding:26px 26px 24px;
  transition:transform .25s,border-color .25s,box-shadow .25s;
}
.card:hover{transform:translateY(-4px);border-color:rgba(246,168,60,.32);box-shadow:0 18px 44px rgba(2,5,12,.5)}
.card h3{font-size:19px;font-weight:700;margin:10px 0 8px}
.card p{font-size:15px}
.when{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--amber);
}

/* nav cards (home) */
.nav-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:880px){.nav-cards{grid-template-columns:1fr 1fr}}
@media(max-width:580px){.nav-cards{grid-template-columns:1fr}}
.nav-card{
  position:relative;display:block;
  background:var(--card);
  border:1px solid var(--hairline);border-radius:18px;
  padding:24px;color:var(--body);overflow:hidden;
  transition:transform .25s,border-color .25s,box-shadow .25s;
}
.nav-card:hover{transform:translateY(-4px);border-color:rgba(246,168,60,.4);box-shadow:0 18px 44px rgba(2,5,12,.5);color:var(--body)}
.nav-card .n{
  font-family:var(--mono);font-size:11px;color:var(--muted);letter-spacing:.1em;
}
.nav-card h3{font-size:20px;margin:14px 0 8px}
.nav-card p{font-size:14.5px;min-height:3.2em}
.nav-card .go{
  display:inline-block;margin-top:14px;
  font-family:var(--mono);font-size:12.5px;color:var(--amber);
  transition:transform .25s;
}
.nav-card:hover .go{transform:translateX(5px)}

/* ---- feature block ---- */
.feature{
  background:var(--card);
  border:1px solid var(--hairline);border-left:3px solid var(--amber);
  border-radius:18px;padding:30px 32px;
  margin-bottom:18px;
}
.feature .kicker{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--amber);margin-bottom:10px;
}
.feature h3{font-size:clamp(20px,2.4vw,25px);margin-bottom:12px}
.feature p{margin-bottom:10px;max-width:74ch}
.feature p:last-child{margin-bottom:0}
.metrics{display:flex;gap:clamp(18px,4vw,44px);flex-wrap:wrap;margin-top:20px;padding-top:18px;border-top:1px solid var(--hairline)}
.metric b{display:block;font-family:var(--disp);font-size:26px;font-weight:800;color:var(--head)}
.metric span{font-family:var(--mono);font-size:11.5px;color:var(--muted);letter-spacing:.04em}

/* ---- tags / chips ---- */
.tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.tags span,.chips span{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.03em;color:var(--body);
  border:1px solid var(--hairline);border-radius:99px;padding:4px 12px;
  background:rgba(11,18,34,.5);
}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chips .lang{border-color:rgba(246,168,60,.35);color:var(--amber-soft)}
.chip-label{
  font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--muted);margin:22px 0 10px;
}

/* ---- about ---- */
.about{display:grid;grid-template-columns:340px 1fr;gap:clamp(24px,4vw,56px);align-items:start}
@media(max-width:880px){.about{grid-template-columns:1fr}.about img{max-width:380px}}
.about img{
  width:100%;height:auto; /* keep natural aspect — the height attr would stretch it */
  border-radius:20px;border:1px solid var(--hairline);
  box-shadow:0 24px 60px rgba(2,5,12,.55);
  position:sticky;top:100px;
}
@media(max-width:880px){.about img{position:static}}
.about p{margin-bottom:16px}
.facts{
  display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:24px 0;
}
@media(max-width:520px){.facts{grid-template-columns:1fr}}
.facts span{
  font-size:13px;color:var(--muted);
  background:var(--card);border:1px solid var(--hairline);border-radius:12px;
  padding:12px 16px;
}
.facts b{display:block;color:var(--head);font-size:14.5px;margin-top:2px}

/* ---- experience / education timeline ---- */
.xp{display:grid;gap:0}
.job{
  display:grid;grid-template-columns:170px 1fr;gap:18px;
  padding:24px 4px;border-bottom:1px solid var(--hairline);
}
@media(max-width:680px){.job{grid-template-columns:1fr;gap:6px}}
.job:last-child{border-bottom:0}
.job h3{font-size:18.5px;font-weight:700}
.job .tag{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--amber);border:1px solid rgba(246,168,60,.4);border-radius:99px;
  padding:2px 10px;margin-left:10px;vertical-align:3px;
}
.job .where{color:var(--muted);font-size:14.5px;margin-top:2px}
.job .note{font-size:14.5px;margin-top:8px;max-width:64ch}
.job ul{margin:10px 0 0 0;list-style:none;display:grid;gap:6px}
.job ul li{font-size:14.5px;padding-left:16px;position:relative}
.job ul li::before{content:"·";position:absolute;left:2px;color:var(--amber);font-weight:700}

/* ---- publications ---- */
.pubs{display:grid;gap:0}
.pub{
  padding:18px 4px;border-bottom:1px solid var(--hairline);
  font-size:15px;line-height:1.6;
  display:flex;gap:14px;align-items:baseline;
}
.pub:last-child{border-bottom:0}
.pub .doi{
  font-family:var(--mono);font-size:12px;white-space:nowrap;
  color:var(--amber);margin-left:8px;
}
.pub em{color:var(--muted);font-style:italic}

details.more{
  background:var(--card);border:1px solid var(--hairline);border-radius:16px;
  margin-top:18px;overflow:hidden;
}
details.more summary{
  cursor:pointer;list-style:none;padding:18px 24px;
  font-family:var(--disp);font-weight:700;font-size:16.5px;color:var(--head);
  display:flex;justify-content:space-between;align-items:center;
}
details.more summary::-webkit-details-marker{display:none}
details.more summary::after{
  content:"+";font-family:var(--mono);color:var(--amber);font-size:20px;font-weight:400;
  transition:transform .25s;
}
details.more[open] summary::after{transform:rotate(45deg)}
details.more .inner{padding:0 24px 22px}
details.more .inner ul{list-style:none;display:grid;gap:12px}
details.more .inner li{font-size:14.5px;padding-left:18px;position:relative}
details.more .inner li::before{content:"·";position:absolute;left:4px;color:var(--amber);font-weight:700}
details.more .inner em{color:var(--muted)}

/* ---- awards ---- */
.awards{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:760px){.awards{grid-template-columns:1fr}}
.award{
  display:flex;gap:18px;align-items:flex-start;
  background:var(--card);border:1px solid var(--hairline);border-radius:14px;
  padding:18px 20px;
}
.award .yr{font-family:var(--mono);font-size:12.5px;color:var(--amber);padding-top:2px}
.award b{display:block;color:var(--head);font-size:15px;font-weight:600;line-height:1.4}
.award span{font-size:13.5px;color:var(--muted)}

/* ---- gallery ---- */
.gallery{
  columns:3;column-gap:16px;
}
@media(max-width:980px){.gallery{columns:2}}
@media(max-width:560px){.gallery{columns:1}}
.shot{
  display:block;width:100%;margin-bottom:16px;break-inside:avoid;
  border-radius:16px;overflow:hidden;position:relative;
  border:1px solid var(--hairline);padding:0;text-align:left;
  transition:transform .25s,border-color .25s,box-shadow .25s;
}
.shot:hover{transform:translateY(-4px);border-color:rgba(246,168,60,.4);box-shadow:0 18px 44px rgba(2,5,12,.55)}
.shot img{width:100%;transition:transform .6s ease}
.shot:hover img{transform:scale(1.04)}
.shot figcaption{
  position:absolute;inset:auto 0 0 0;
  padding:30px 16px 12px;
  font-family:var(--mono);font-size:12px;color:#e8edf7;letter-spacing:.02em;
  background:linear-gradient(180deg,transparent,rgba(4,7,14,.85));
  opacity:0;transition:opacity .3s;
}
.shot:hover figcaption{opacity:1}

.lb{
  position:fixed;inset:0;z-index:300;display:flex;align-items:center;justify-content:center;
  background:rgba(4,7,14,.93);backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s;
  padding:4vmin;
}
.lb.open{opacity:1;visibility:visible}
.lb img{max-width:100%;max-height:100%;border-radius:10px;box-shadow:0 30px 90px rgba(0,0,0,.7)}
.lb-close{
  position:absolute;top:18px;right:24px;
  font-size:34px;color:#fff;line-height:1;padding:8px;z-index:2;
}

/* ---- contact ---- */
.hello{
  display:inline-block;
  font-family:var(--disp);font-weight:800;letter-spacing:-.01em;
  font-size:clamp(26px,5vw,52px);color:var(--head);
  border-bottom:3px solid var(--amber);padding-bottom:6px;
  transition:color .2s,border-color .2s;
}
.hello:hover{color:var(--amber-soft)}
.social{display:flex;gap:26px;flex-wrap:wrap;margin-top:30px;font-family:var(--mono);font-size:14px}

/* ---- CV ---- */
.cv{max-width:860px;margin:0 auto}
.cv-head{text-align:center;padding:clamp(20px,4vh,40px) 0 6px}
.cv-head h1{font-size:clamp(30px,5vw,44px);font-weight:800}
.cv-head .contact{font-family:var(--mono);font-size:13px;color:var(--muted);margin-top:12px;line-height:2}
.cv-actions{display:flex;gap:12px;justify-content:center;margin:18px 0 8px}
.cv h2{
  font-size:17px;letter-spacing:.06em;text-transform:uppercase;color:var(--amber);
  border-bottom:1px solid var(--hairline);padding-bottom:8px;margin:34px 0 16px;
}
.cv .row{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.cv .row b{color:var(--head);font-weight:600;font-size:16px}
.cv .row .meta{font-family:var(--mono);font-size:13px;color:var(--muted);white-space:nowrap}
.cv .sub{color:var(--body);font-size:14.5px;margin:2px 0 4px}
.cv .blk{margin-bottom:16px}
.cv ul{list-style:none;display:grid;gap:6px;margin:6px 0 0}
.cv ul li{padding-left:16px;position:relative;font-size:14.5px}
.cv ul li::before{content:"·";position:absolute;left:2px;color:var(--amber);font-weight:700}
.cv .pubgrp{font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:14px 0 6px}
.cv .refs{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:600px){.cv .refs{grid-template-columns:1fr}}

/* ---- footer ---- */
footer{
  display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;
  max-width:var(--maxw);margin:0 auto;
  padding:26px var(--pad) 34px;
  border-top:1px solid var(--hairline);
  font-size:13.5px;color:var(--muted);
}
footer .geo{font-family:var(--mono);font-size:12px;letter-spacing:.05em}
footer a{color:var(--body)}
footer a:hover{color:var(--amber-soft)}

/* ---- reveal ---- */
.rv{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.08s}
.rv.d2{transition-delay:.16s}

/* ---- reduced motion ---- */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .rv{opacity:1;transform:none}
}

/* ---- print (CV) ---- */
@media print{
  #nav,.veil,#net,footer,.cv-actions,.scroll-progress,.hud,.skip{display:none!important}
  html,body{background:#fff!important;color:#111!important;font-size:11pt}
  main{padding:0!important;max-width:none}
  .cv h2{color:#111;border-color:#999}
  .cv .row b,.cv-head h1{color:#000}
  .cv .sub,.cv .row .meta,.cv-head .contact,.cv .pubgrp{color:#444}
  .cv ul li::before{color:#000}
  a{color:#111;text-decoration:none}
}