/* ============================================================
   PIYUSH HARSH — PERSONAL WEBSITE
   Stylesheet built on the personal brand system (v1.0)
   Navy spine · pastel accents · Helvetica + Courier
   ============================================================ */

/* ---- TOKENS ---- */
:root{
  --navy-midnight:#0A1A2F; --navy-deep:#12294A; --navy:#1B3A66;
  --navy-ocean:#26518C; --navy-slate:#3E6FB0; --navy-tint:#6E93C4;
  --sky:#B8D4EA; --mint:#BEE3D3; --peach:#F7C9B8; --lilac:#D6CCE8; --butter:#F5E6B8;
  --ink:#0D1117; --slate:#5A6B7B; --mist:#E7ECF1; --paper:#FAFBFC; --white:#fff;
  --sans:"Helvetica Neue",Helvetica,Arial,sans-serif;
  --mono:"Courier New",Courier,monospace;
  --radius:4px; --radius-lg:8px; --unit:8px;
  --shadow:0 1px 2px rgba(10,26,47,.08),0 4px 12px rgba(10,26,47,.06);
  --maxw:1080px;
}

/* ---- RESET ---- */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--paper);
  line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--navy);text-decoration:none}
a:hover{color:var(--navy-ocean);text-decoration:underline}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}

/* ---- TYPOGRAPHY HELPERS ---- */
.kicker{font-family:var(--mono);text-transform:uppercase;letter-spacing:.12em;
  font-size:.72rem;color:var(--slate)}
h1,h2,h3,h4{letter-spacing:-.01em;line-height:1.15;color:var(--ink)}
h1{font-size:2.7rem;font-weight:700}
h2{font-size:1.85rem;font-weight:700;color:var(--navy)}
h3{font-size:1.1rem;font-weight:700}
.section-head{margin-bottom:34px}
.rule{height:2px;width:56px;background:var(--navy);border-radius:2px;margin:10px 0 0}
.mono{font-family:var(--mono)}
.lead{font-size:1.18rem;color:var(--ink);max-width:60ch}
.muted{color:var(--slate)}

/* ---- NAV ---- */
.nav{position:sticky;top:0;z-index:50;background:rgba(250,251,252,.9);
  backdrop-filter:saturate(140%) blur(10px);border-bottom:1px solid var(--mist)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:700;font-size:1.15rem;color:var(--navy);letter-spacing:-.02em}
.brand .caret{color:var(--navy-slate)}
.brand:hover{text-decoration:none}
.nav-links{display:flex;gap:6px;align-items:center;list-style:none}
.nav-links a{font-family:var(--mono);font-size:.78rem;text-transform:uppercase;
  letter-spacing:.06em;color:var(--slate);padding:8px 12px;border-radius:var(--radius)}
.nav-links a:hover{color:var(--navy);background:var(--mist);text-decoration:none}
.nav-links a.active{color:var(--navy);border-bottom:2px solid var(--navy);border-radius:0}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;
  font-family:var(--mono);font-size:1.4rem;color:var(--navy)}

/* ---- HERO ---- */
.hero{background:var(--navy-deep);color:var(--white);padding:72px 0 64px;position:relative}
.hero::after{content:"";position:absolute;inset:0;
  background:radial-gradient(600px 300px at 85% 0%,rgba(184,212,234,.14),transparent 70%);
  pointer-events:none}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.6fr 1fr;gap:48px;align-items:center}
.hero .kicker{color:#9FBBDA}
.hero h1{color:#fff;margin:14px 0 18px}
.hero h1 .caret{color:var(--sky)}
.hero .roles{font-family:var(--mono);color:var(--sky);font-size:.92rem;letter-spacing:.04em;
  margin-bottom:22px;line-height:2}
.hero p.bio{color:#D8E2EE;font-size:1.05rem;max-width:56ch}
.hero .cta{margin-top:26px;display:flex;gap:12px;flex-wrap:wrap}

/* portrait */
.portrait{justify-self:center;width:230px;height:230px;border-radius:var(--radius-lg);
  overflow:hidden;border:3px solid var(--navy-slate);box-shadow:var(--shadow);
  background:linear-gradient(160deg,var(--navy-ocean),var(--navy-midnight));
  display:flex;align-items:center;justify-content:center}
.portrait img{width:100%;height:100%;object-fit:cover;object-position:center 12%}
.portrait .mono-monogram{font-weight:700;font-size:4.5rem;color:var(--sky);font-family:var(--sans)}

/* ---- BUTTONS ---- */
.btn{display:inline-block;font-family:var(--sans);font-weight:700;font-size:.9rem;
  padding:11px 20px;border-radius:var(--radius);border:2px solid transparent;cursor:pointer}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--navy);color:#fff}
.btn-primary:hover{background:var(--navy-ocean);color:#fff}
.btn-ghost{background:transparent;color:#fff;border-color:var(--navy-tint)}
.btn-ghost:hover{background:rgba(255,255,255,.08);color:#fff}
.btn-ghost.dark{color:var(--navy);border-color:var(--navy)}
.btn-ghost.dark:hover{background:var(--mist)}

/* ---- SECTIONS ---- */
section.block{padding:64px 0;border-bottom:1px solid var(--mist)}
section.block.tint{background:var(--white)}

/* ---- STAT ROW ---- */
.stats{display:flex;flex-wrap:wrap;gap:40px;margin-top:8px}
.stat .num{font-family:var(--mono);font-size:2rem;font-weight:700;color:var(--navy)}
.stat .lbl{font-family:var(--mono);text-transform:uppercase;letter-spacing:.1em;
  font-size:.68rem;color:var(--slate)}

/* ---- PILLS / TAGS ---- */
.pill{display:inline-block;font-family:var(--mono);font-size:.68rem;text-transform:uppercase;
  letter-spacing:.07em;padding:4px 10px;border-radius:999px;border:1px solid var(--navy-tint);
  color:var(--navy-ocean);margin:3px 4px 3px 0;white-space:nowrap}
.pill.solid{background:var(--sky);border-color:var(--sky);color:var(--navy-deep)}
.flag{display:inline-block;font-family:var(--mono);font-size:.66rem;text-transform:uppercase;
  letter-spacing:.08em;color:var(--slate)}

/* ============================================================
   TIMELINE (with forks for concurrent roles)
   ============================================================ */
.timeline{position:relative;margin-top:20px;padding-left:0}
.tl-era{position:relative;padding:0 0 10px 0}
.tl-spine{position:relative;padding-left:38px}
.tl-spine::before{content:"";position:absolute;left:11px;top:0;bottom:0;width:2px;
  background:var(--navy-slate)}
.tl-node{position:relative;padding:14px 0 26px 38px}
.tl-node::before{content:"";position:absolute;left:4px;top:20px;width:16px;height:16px;
  border-radius:50%;background:var(--paper);border:3px solid var(--navy);z-index:2}
.tl-node .yr{font-family:var(--mono);font-size:.78rem;color:var(--navy-ocean);
  letter-spacing:.05em;font-weight:700}
.tl-card{background:var(--white);border:1px solid var(--mist);border-radius:var(--radius-lg);
  padding:16px 18px;box-shadow:var(--shadow);margin-top:6px}
.tl-card h4{font-size:1.02rem;color:var(--ink)}
.tl-card .org{font-family:var(--mono);font-size:.8rem;color:var(--navy-ocean);margin:2px 0 6px}
.tl-card p{font-size:.9rem;color:var(--slate)}
.tl-kind{font-family:var(--mono);font-size:.64rem;text-transform:uppercase;letter-spacing:.09em;
  padding:2px 8px;border-radius:3px;margin-left:8px;vertical-align:middle}
.tl-kind.edu{background:var(--lilac);color:var(--navy-deep)}
.tl-kind.work{background:var(--sky);color:var(--navy-deep)}
.tl-kind.venture{background:var(--mint);color:#184b39}

/* FORK: two concurrent tracks branching off the spine */
.tl-fork{position:relative;padding-left:38px;margin:4px 0 26px}
.tl-fork::before{content:"";position:absolute;left:11px;top:-6px;height:34px;width:2px;
  background:var(--navy-slate)}
.tl-fork-label{position:relative;font-family:var(--mono);font-size:.66rem;text-transform:uppercase;
  letter-spacing:.1em;color:var(--peach-ink,#a35b3f);margin:0 0 10px 0;padding-left:2px}
.tl-fork-badge{display:inline-block;background:var(--peach);color:#8a4a2f;padding:3px 10px;
  border-radius:999px;font-weight:700}
.tl-branches{display:grid;grid-template-columns:1fr 1fr;gap:16px;position:relative}
.tl-branches::before{content:"";position:absolute;left:-27px;top:26px;width:27px;height:2px;
  background:var(--navy-slate)}
.tl-branch{position:relative}
.tl-branch::before{content:"";position:absolute;left:-27px;top:26px;width:14px;height:14px;
  border-radius:50%;background:var(--paper);border:3px solid var(--navy-slate)}
.tl-branch:nth-child(2)::before{display:none}

/* ============================================================
   GENERIC CARD GRIDS (portfolio / ventures / blog)
   ============================================================ */
.grid{display:grid;gap:20px}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}

.card{background:var(--white);border:1px solid var(--mist);border-radius:var(--radius-lg);
  padding:22px;box-shadow:var(--shadow);position:relative;transition:transform .15s ease,
  box-shadow .15s ease}
.card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(10,26,47,.12)}
.card .accent-bar{height:5px;border-radius:3px;margin:-22px -22px 16px;border-radius:8px 8px 0 0}

/* portfolio company card */
.co-logo{position:relative;width:56px;height:56px;border-radius:var(--radius);background:var(--mist);
  display:flex;align-items:center;justify-content:center;font-family:var(--sans);font-weight:700;
  color:var(--navy);font-size:1.1rem;overflow:hidden;flex:0 0 56px}
.co-logo .ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:var(--navy-deep);font-weight:700;font-size:1.05rem;letter-spacing:-.02em}
.co-logo img{position:relative;z-index:1;width:100%;height:100%;object-fit:contain;padding:6px;
  background:var(--white)}
.co-head{display:flex;gap:14px;align-items:center;margin-bottom:12px}
.co-head .meta h3{font-size:1.05rem}
.co-desc{font-size:.9rem;color:var(--slate);min-height:2.4em}
.co-foot{display:flex;justify-content:space-between;align-items:center;margin-top:14px;
  padding-top:12px;border-top:1px solid var(--mist)}
.co-legal{font-family:var(--mono);font-size:.66rem;color:var(--slate);margin-top:3px;line-height:1.35}
.badges{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0 10px}
.badge{font-family:var(--mono);font-size:.6rem;text-transform:uppercase;letter-spacing:.05em;
  padding:3px 9px;border-radius:999px;font-weight:700;display:inline-flex;align-items:center;
  gap:5px;white-space:nowrap}
.badge .dot{width:6px;height:6px;border-radius:50%;background:currentColor;display:inline-block}
.badge.active{background:var(--mint);color:#155c42}
.badge.pivot{background:var(--peach);color:#8a4a2f}
.badge.ipo{background:var(--sky);color:var(--navy-deep)}
.badge.social{background:var(--lilac);color:#4a3d6b}
.co-head .meta{min-width:0}
.co-head .meta h3{font-size:1.05rem;line-height:1.2;overflow-wrap:anywhere}
/* country subsection divider */
.geo-head{display:flex;align-items:baseline;gap:12px;margin:6px 0 20px}
.geo-head .flagbig{font-size:1.3rem}
.geo-head h3{font-size:1.15rem;color:var(--navy)}
.geo-head .count{font-family:var(--mono);font-size:.72rem;color:var(--slate);
  text-transform:uppercase;letter-spacing:.08em}
.geo-head .line{flex:1;height:1px;background:var(--mist)}

/* venture card */
.venture{display:flex;gap:18px;align-items:flex-start}
.venture .yr{font-family:var(--mono);font-size:.78rem;color:var(--navy-ocean);font-weight:700;
  flex:0 0 96px}
.status-dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:6px}
.status-dot.active{background:#2fae7a}
.status-dot.past{background:var(--navy-tint)}

/* ============================================================
   PUBLICATIONS
   ============================================================ */
.pub-group{margin-bottom:40px}
.pub-group > .kicker{margin-bottom:6px}
.pub{padding:18px 0;border-bottom:1px solid var(--mist);display:grid;
  grid-template-columns:64px 1fr;gap:18px}
.pub .yr{font-family:var(--mono);font-weight:700;color:var(--navy-ocean);font-size:.95rem}
.pub h4{font-size:1.02rem;margin-bottom:4px}
.pub .venue{font-family:var(--mono);font-size:.78rem;color:var(--slate);margin-bottom:6px}
.pub p{font-size:.9rem;color:var(--slate)}
.pub .cites{font-family:var(--mono);font-size:.7rem;color:var(--navy-slate);
  text-transform:uppercase;letter-spacing:.06em}

/* terminal motif block */
.term{background:var(--navy-midnight);color:var(--sky);font-family:var(--mono);
  font-size:.86rem;padding:20px 22px;border-radius:var(--radius-lg);line-height:1.9;overflow-x:auto}
.term .u{color:var(--butter)} .term .g{color:var(--mint)} .term .c{color:#8EA2BA}

/* thesis callout */
.thesis{background:linear-gradient(150deg,var(--white),#F2F6FB);
  border:1px solid var(--mist);border-left:4px solid var(--navy);border-radius:var(--radius-lg);
  padding:28px 30px;box-shadow:var(--shadow)}
.thesis h3{color:var(--navy);margin-bottom:10px}
.thesis ul{list-style:none;display:grid;gap:10px;margin-top:14px}
.thesis li{padding-left:22px;position:relative;font-size:.95rem}
.thesis li::before{content:">";font-family:var(--mono);color:var(--navy-slate);
  position:absolute;left:0;font-weight:700}

/* blog placeholder */
.post{opacity:1}
.post .tagrow{margin:10px 0}
.post.placeholder{border-style:dashed;background:repeating-linear-gradient(
  -45deg,var(--paper),var(--paper) 10px,#F4F7FA 10px,#F4F7FA 20px)}
.post.placeholder h3{color:var(--slate)}
.soon{font-family:var(--mono);font-size:.66rem;text-transform:uppercase;letter-spacing:.1em;
  color:var(--navy-ocean);background:var(--butter);padding:3px 9px;border-radius:3px}

/* ---- TIMELINE GRAPHIC (hand-drawn SVG life-map) ---- */
.timeline-graphic{overflow-x:auto;margin-top:8px;-webkit-overflow-scrolling:touch;
  scrollbar-width:thin}
.timeline-graphic svg{width:100%;min-width:720px;height:auto;display:block}
.tl-legend{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:16px;
  font-family:var(--mono);font-size:.72rem;color:var(--slate);align-items:center}
.tl-legend span{display:inline-flex;align-items:center;gap:7px}
.tl-legend i{width:16px;height:3px;border-radius:2px;display:inline-block}
.tl-scrollhint{display:none;font-family:var(--mono);font-size:.7rem;color:var(--navy-ocean);
  margin-top:8px}
@media(max-width:680px){.tl-scrollhint{display:block}}

/* ---- BLOG ARTICLE ---- */
.article{max-width:740px;margin:0 auto}
.article p{margin:0 0 18px;font-size:1.06rem;color:var(--ink);line-height:1.72}
.article h2{font-size:1.5rem;margin:36px 0 12px;color:var(--navy)}
.article h3{font-size:1.2rem;margin:26px 0 10px;color:var(--ink)}
.article ul,.article ol{margin:0 0 18px 20px;display:flex;flex-direction:column;gap:9px}
.article li{font-size:1.06rem;line-height:1.6}
.article blockquote{border-left:3px solid var(--sky);padding:8px 0 8px 18px;margin:0 0 20px;
  color:var(--slate);font-size:1.12rem;font-style:italic}
.article a{color:var(--navy-ocean);text-decoration:underline}
.article code{font-family:var(--mono);background:var(--mist);padding:2px 6px;border-radius:4px;
  font-size:.9em}
.article pre{background:var(--navy-midnight);color:var(--sky);font-family:var(--mono);
  padding:18px 20px;border-radius:var(--radius-lg);overflow-x:auto;margin:0 0 20px;
  font-size:.86rem;line-height:1.7}
.article pre code{background:none;padding:0;color:inherit}
.article hr{border:none;border-top:1px solid var(--mist);margin:30px 0}
.article img{max-width:100%;height:auto;border-radius:var(--radius-lg);margin:6px 0 22px;
  display:block}
.article figure{margin:0 0 22px}
.article figcaption{font-family:var(--mono);font-size:.78rem;color:var(--slate);margin-top:6px}
/* nested lists */
.article ul ul,.article ol ol,.article ul ol,.article ol ul{margin:9px 0 0 18px}
/* tables */
.article .table-wrap{overflow-x:auto;margin:0 0 22px;border-radius:var(--radius-lg)}
.article table{border-collapse:collapse;width:100%;font-size:.96rem}
.article th,.article td{border:1px solid var(--mist);padding:9px 13px;text-align:left;
  vertical-align:top;line-height:1.5}
.article thead th{background:var(--navy);color:#fff;font-weight:700;font-family:var(--mono);
  font-size:.76rem;text-transform:uppercase;letter-spacing:.04em}
.article tbody tr:nth-child(even){background:#F2F6FB}
.post-meta{font-family:var(--mono);font-size:.82rem;color:var(--sky);letter-spacing:.03em}
.back-link{font-family:var(--mono);font-size:.8rem;text-transform:uppercase;letter-spacing:.06em}

/* ---- FOOTER ---- */
footer.site{background:var(--navy-midnight);color:#B7C6D8;padding:48px 0 40px;font-size:.9rem}
footer.site .wrap{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;align-items:flex-start}
footer.site a{color:var(--sky)}
footer.site .fbrand{font-weight:700;font-size:1.1rem;color:#fff}
footer.site .mono{color:#A9BBD0;font-size:.76rem;margin-top:8px}
footer.site .fcol h5{font-family:var(--mono);text-transform:uppercase;letter-spacing:.1em;
  font-size:.7rem;color:#A9BBD0;margin-bottom:10px}
footer.site .fcol a{display:block;margin-bottom:6px;color:#B7C6D8}
footer.site .fcol a:hover{color:#fff}

/* ---- PAGE HEADER (interior pages) ---- */
.pagehead{background:var(--navy-deep);color:#fff;padding:56px 0 46px;position:relative}
.pagehead::after{content:"";position:absolute;inset:0;
  background:radial-gradient(500px 240px at 90% 0%,rgba(184,212,234,.12),transparent 70%)}
.pagehead .wrap{position:relative}
.pagehead .kicker{color:#9FBBDA}
.pagehead h1{color:#fff;margin:12px 0 14px;font-size:2.3rem}
.pagehead p{color:#D8E2EE;max-width:62ch}
/* stats sitting on the navy page header need light text (not the light-bg defaults) */
.pagehead .stat .num,.hero .stat .num{color:#fff}
.pagehead .stat .lbl,.hero .stat .lbl{color:#9FBBDA}

/* ---- RESPONSIVE ---- */
@media(max-width:860px){
  .hero .wrap{grid-template-columns:1fr;gap:30px;text-align:left}
  .portrait{justify-self:start}
  h1{font-size:2.2rem}
  .grid.cols-3{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .nav-links{position:fixed;inset:64px 0 auto 0;background:var(--paper);flex-direction:column;
    align-items:stretch;gap:0;border-bottom:1px solid var(--mist);padding:8px 20px 16px;
    display:none;box-shadow:var(--shadow)}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 8px}
  .nav-links a.active{border-bottom:none;color:var(--navy);background:var(--mist)}
  .nav-toggle{display:block}
  .grid.cols-2,.grid.cols-3{grid-template-columns:1fr}
  .tl-branches{grid-template-columns:1fr;gap:12px}
  .tl-branches::before,.tl-branch::before{display:none}
  .tl-branch{padding-left:0}
  .pub{grid-template-columns:1fr;gap:6px}
  h1{font-size:1.9rem}
}