/* ========================================================================
   Divya Kumar — Product Portfolio
   Shared design system
   ======================================================================== */

:root{
  --bg: #0a0a0c;
  --bg-elev: #131316;
  --bg-card: #15151a;
  --border: #232328;
  --text: #f4f4f5;
  --text-dim: #9a9aa3;
  --text-faint: #6b6b74;
  --white: #ffffff;
  --accent: #7c5cfc;
  --accent-soft: rgba(124,92,252,.14);
  --radius: 16px;
  --radius-sm: 10px;
  --maxw: 1120px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
}
h1,h2,h3,h4{
  font-family:'Sora','Inter',sans-serif;
  font-weight:700;
  letter-spacing:-0.02em;
  margin:0;
  color:var(--white);
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;}

/* ---------- top nav ---------- */
.topnav{
  position:sticky;top:0;z-index:50;
  background:rgba(10,10,12,.82);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.topnav .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;}
.brand{font-family:'Sora',sans-serif;font-weight:700;font-size:18px;color:var(--white);display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:32px;height:32px;border-radius:9px;
  background:linear-gradient(135deg,#7c5cfc,#22d3ee);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;color:#0a0a0c;
}
.navlinks{display:flex;gap:32px;font-size:14px;color:var(--text-dim);}
.navlinks a:hover{color:var(--white);}
.navcta{
  display:flex;gap:10px;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:999px;
  font-size:14px;font-weight:600;
  border:1px solid var(--border);
  transition:all .15s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--white);color:#0a0a0c;border-color:var(--white);}
.btn-primary:hover{background:#e5e5e5;}
.btn-ghost{color:var(--text);}
.btn-ghost:hover{border-color:var(--text-dim);background:var(--bg-elev);}
.btn-sm{padding:7px 14px;font-size:13px;}

/* ---------- hero (hub) ---------- */
.hero{padding:84px 0 56px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--accent);
  text-transform:uppercase;letter-spacing:.08em;
  margin-bottom:18px;
}
.eyebrow::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--accent);}
.hero h1{font-size:clamp(36px,6vw,64px);line-height:1.04;}
.hero .tagline{
  margin-top:18px;font-size:19px;color:var(--text-dim);max-width:640px;line-height:1.55;
}
.hero-actions{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap;}
.stat-row{display:flex;gap:36px;margin-top:48px;flex-wrap:wrap;}
.stat-row .num{font-family:'Sora',sans-serif;font-size:30px;font-weight:700;color:var(--white);}
.stat-row .label{font-size:13px;color:var(--text-faint);margin-top:2px;}

/* ---------- section headers ---------- */
.section{padding:64px 0;}
.section-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:36px;flex-wrap:wrap;gap:12px;}
.section-head h2{font-size:clamp(26px,4vw,36px);}
.section-head p{color:var(--text-dim);font-size:15px;max-width:480px;}
.section-sep{border-top:1px solid var(--border);}

/* ---------- case study grid ---------- */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
@media (max-width:760px){.case-grid{grid-template-columns:1fr;}}

.case-card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .18s ease, border-color .18s ease;
}
.case-card:hover{transform:translateY(-4px);border-color:var(--text-faint);}
.case-cover{
  height:118px;position:relative;
  display:flex;align-items:flex-end;justify-content:space-between;
  padding:16px 20px;
}
.case-cover .tag{
  font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;
  background:rgba(0,0,0,.28);backdrop-filter:blur(6px);
  padding:5px 10px;border-radius:999px;color:#fff;
}
.case-cover .mark{font-family:'Sora',sans-serif;font-weight:800;font-size:22px;color:rgba(255,255,255,.92);}
.case-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:14px;flex:1;}
.case-body h3{font-size:19px;line-height:1.3;}
.case-body .hook{font-size:14px;color:var(--text-dim);line-height:1.55;}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:auto;}
.chip{
  font-size:12px;font-weight:600;color:var(--text);
  background:var(--bg-elev);border:1px solid var(--border);
  padding:5px 10px;border-radius:999px;
}
.case-link{
  display:flex;align-items:center;gap:6px;
  font-size:13.5px;font-weight:600;color:var(--white);
  padding-top:6px;
}
.case-card:hover .case-link{color:var(--accent);}

/* ---------- experience ---------- */
.xp-item{
  display:grid;grid-template-columns:200px 1fr;gap:28px;
  padding:26px 0;border-bottom:1px solid var(--border);
}
.xp-item:last-child{border-bottom:none;}
@media (max-width:680px){.xp-item{grid-template-columns:1fr;gap:8px;}}
.xp-when{color:var(--text-faint);font-size:13.5px;}
.xp-role h4{font-size:18px;}
.xp-role .co{color:var(--accent);font-weight:600;}
.xp-bullets{margin:14px 0 0;padding-left:18px;color:var(--text-dim);font-size:14.5px;line-height:1.65;}
.xp-bullets li{margin-bottom:7px;}

/* ---------- edu / certs ---------- */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:40px;}
@media (max-width:680px){.two-col{grid-template-columns:1fr;}}
.list-plain{margin:0;padding:0;list-style:none;}
.list-plain li{
  padding:13px 0;border-bottom:1px solid var(--border);
  font-size:14.5px;color:var(--text-dim);display:flex;justify-content:space-between;gap:12px;
}
.list-plain li b{color:var(--text);font-weight:600;}

/* ---------- skills tag cloud ---------- */
.tagcloud{display:flex;flex-wrap:wrap;gap:10px;}
.tagcloud span{
  font-size:13.5px;color:var(--text-dim);
  border:1px solid var(--border);padding:8px 14px;border-radius:999px;
}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--border);padding:40px 0;color:var(--text-faint);font-size:13.5px;}
footer .wrap{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;}
footer a:hover{color:var(--text);}

/* ========================================================================
   PROJECT (case study) PAGE
   ======================================================================== */
.proj-top{
  border-bottom:1px solid var(--border);
  padding:18px 0;
}
.proj-top .wrap{display:flex;align-items:center;justify-content:space-between;}
.back{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-dim);font-weight:600;}
.back:hover{color:var(--white);}

.p-hero{padding:64px 0 48px;position:relative;}
.p-hero .tag{
  display:inline-block;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.07em;
  padding:6px 12px;border-radius:999px;margin-bottom:20px;
}
.p-hero h1{font-size:clamp(32px,5.5vw,52px);line-height:1.08;max-width:820px;}
.p-hero .sub{font-size:17px;color:var(--text-dim);margin-top:16px;max-width:640px;}

.facts{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;background:var(--border);
  border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;
  margin-top:40px;
}
@media (max-width:760px){.facts{grid-template-columns:repeat(2,1fr);}}
.fact{background:var(--bg-card);padding:18px 20px;}
.fact .k{font-size:11.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-faint);margin-bottom:6px;}
.fact .v{font-size:14.5px;font-weight:600;color:var(--text);line-height:1.4;}
.fact .v a{text-decoration:underline;text-decoration-color:var(--border);}
.fact .v a:hover{color:var(--accent);text-decoration-color:var(--accent);}

.p-section{padding:52px 0;border-top:1px solid var(--border);}
.p-section h2{font-size:clamp(22px,3.5vw,30px);margin-bottom:18px;}
.p-kicker{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);margin-bottom:10px;display:block;}
.p-section .lede{font-size:16.5px;color:var(--text-dim);max-width:760px;line-height:1.7;margin-bottom:8px;}
.p-section p{font-size:15.5px;color:var(--text-dim);max-width:760px;line-height:1.75;}

/* stat cards (real numbers from the docs) */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:28px;}
@media (max-width:760px){.stat-grid{grid-template-columns:repeat(2,1fr);}}
.stat-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:20px;
}
.stat-card .big{font-family:'Sora',sans-serif;font-size:28px;font-weight:700;color:var(--white);}
.stat-card .cap{font-size:12.5px;color:var(--text-faint);margin-top:6px;line-height:1.4;}

/* generic horizontal bar chart (RICE / funnel / scores) */
.barchart{display:flex;flex-direction:column;gap:14px;margin-top:24px;}
.bar-row{display:grid;grid-template-columns:230px 1fr 64px;align-items:center;gap:14px;}
@media (max-width:680px){.bar-row{grid-template-columns:1fr;gap:6px;}}
.bar-row .name{font-size:13.5px;color:var(--text);font-weight:600;}
.bar-row .name small{display:block;font-weight:400;color:var(--text-faint);font-size:11.5px;margin-top:2px;}
.bar-track{height:10px;border-radius:6px;background:var(--bg-elev);overflow:hidden;}
.bar-fill{height:100%;border-radius:6px;}
.bar-row .val{font-size:13px;color:var(--text-dim);text-align:right;font-weight:600;}

/* funnel viz */
.funnel{display:flex;flex-direction:column;gap:8px;margin-top:26px;}
.funnel-step{display:grid;grid-template-columns:140px 1fr 56px;align-items:center;gap:14px;}
@media (max-width:680px){.funnel-step{grid-template-columns:100px 1fr 44px;}}
.funnel-step .lbl{font-size:13px;color:var(--text);font-weight:600;}
.funnel-bar-wrap{background:var(--bg-elev);border-radius:8px;height:30px;display:flex;align-items:center;}
.funnel-bar{height:100%;border-radius:8px;display:flex;align-items:center;padding-left:12px;font-size:12px;font-weight:700;color:#0a0a0c;}
.funnel-step .pct{font-size:13px;color:var(--text-dim);font-weight:600;text-align:right;}

/* epic / feature cards */
.epic-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:28px;}
@media (max-width:760px){.epic-grid{grid-template-columns:1fr;}}
.epic-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:22px;
}
.epic-card .id{font-size:11.5px;font-weight:700;color:var(--text-faint);letter-spacing:.05em;margin-bottom:8px;display:block;}
.epic-card h4{font-size:16px;margin-bottom:8px;line-height:1.35;}
.epic-card p{font-size:13.8px;color:var(--text-dim);line-height:1.6;margin:0;}
.epic-card ul{margin:12px 0 0;padding-left:16px;font-size:13.2px;color:var(--text-dim);line-height:1.6;}
.epic-card li{margin-bottom:4px;}
.flow-viz{width:100%;height:auto;display:block;margin-top:16px;}

/* roadmap phases */
.phase-list{display:flex;flex-direction:column;gap:0;margin-top:26px;}
.phase{display:grid;grid-template-columns:140px 1fr;gap:20px;padding:20px 0;border-top:1px solid var(--border);}
.phase:first-child{border-top:none;}
@media (max-width:680px){.phase{grid-template-columns:1fr;gap:6px;}}
.phase .when{font-size:13px;color:var(--accent);font-weight:700;}
.phase .what b{color:var(--text);}
.phase .what{font-size:14.5px;color:var(--text-dim);line-height:1.6;}

/* before/after */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px;}
@media (max-width:680px){.compare{grid-template-columns:1fr;}}
.compare .col{border:1px solid var(--border);border-radius:var(--radius-sm);padding:20px;}
.compare .col.before{background:rgba(239,68,68,.05);}
.compare .col.after{background:rgba(34,197,94,.06);}
.compare .lbl{font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;margin-bottom:10px;}
.compare .before .lbl{color:#f87171;}
.compare .after .lbl{color:#4ade80;}
.compare p{font-size:13.8px;color:var(--text-dim);margin:0;line-height:1.6;}

/* embedded prototype / pdf */
.embed-frame{
  border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;margin-top:26px;
  background:var(--bg-card);
}
.embed-frame .embed-bar{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 18px;border-bottom:1px solid var(--border);font-size:13px;color:var(--text-dim);
}
.embed-frame .embed-bar .dots{display:flex;gap:6px;}
.embed-frame .embed-bar .dots span{width:9px;height:9px;border-radius:50%;background:var(--border);}
.embed-frame iframe{width:100%;border:none;display:block;background:#fff;}

/* deliverable buttons row */
.deliverables{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px;}

/* quote / peer feedback */
.quote{
  border-left:3px solid var(--accent);padding-left:20px;margin:24px 0;
  font-size:15.5px;color:var(--text);font-style:italic;line-height:1.7;
}
.quote cite{display:block;font-style:normal;font-size:12.5px;color:var(--text-faint);margin-top:8px;}

/* prev/next footer nav on project pages */
.proj-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:48px 0;}
@media (max-width:680px){.proj-nav{grid-template-columns:1fr;}}
.proj-nav a{
  border:1px solid var(--border);border-radius:var(--radius-sm);padding:20px 22px;
  display:flex;flex-direction:column;gap:6px;
}
.proj-nav a:hover{border-color:var(--text-faint);}
.proj-nav .dir{font-size:11.5px;color:var(--text-faint);text-transform:uppercase;letter-spacing:.06em;}
.proj-nav .t{font-size:15px;font-weight:600;color:var(--white);}
.proj-nav .next{text-align:right;align-items:flex-end;}