/* ============================================================
   Team K Analytics — Trinity Pond Field Study
   Design language: MEASURED = solid teal · MODELED = dashed amber
   Type: Fraunces (display) · IBM Plex Sans (body) · IBM Plex Mono (data)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap');

:root{
  --ink:#0C2429;
  --paper:#ECF0ED;
  --card:#F7F9F6;
  --teal:#0E6B79;          /* measured / real */
  --teal-deep:#0A4750;
  --reed:#3E6B4F;          /* secondary */
  --amber:#C0762A;         /* modeled / estimate */
  --amber-bg:#FBF1E3;
  --amber-line:#E2B883;
  --muted:#566663;
  --line:rgba(12,36,41,.14);
  --line-strong:rgba(12,36,41,.28);
  --maxw:1080px;
  --r:14px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'IBM Plex Sans',system-ui,sans-serif;
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  font-size:17px;
}
img{max-width:100%}
a{color:var(--teal-deep)}

/* ---------- layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.section{padding:72px 0;border-top:1px solid var(--line)}
.section:first-of-type{border-top:none}
.lede{font-size:1.18rem;color:var(--ink);max-width:64ch}
.muted{color:var(--muted)}
.tight{max-width:66ch}

/* ---------- type ---------- */
h1,h2,h3{font-family:'Fraunces',Georgia,serif;font-weight:600;line-height:1.08;letter-spacing:-.01em;margin:0 0 .4em}
h1{font-size:clamp(2.3rem,5.4vw,4rem);font-weight:600}
h2{font-size:clamp(1.7rem,3.4vw,2.5rem)}
h3{font-size:1.28rem;line-height:1.2}
p{margin:0 0 1.05em}
.eyebrow{
  font-family:'IBM Plex Mono',monospace;font-size:.72rem;font-weight:500;
  letter-spacing:.22em;text-transform:uppercase;color:var(--teal);
  display:flex;align-items:center;gap:10px;margin-bottom:22px;
}
.eyebrow::before{content:"";width:34px;height:2px;background:var(--teal);display:inline-block}
.kicker{font-family:'IBM Plex Mono',monospace;font-size:.7rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(236,240,237,.86);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{font-family:'IBM Plex Mono',monospace;font-weight:600;font-size:.82rem;
  letter-spacing:.14em;text-transform:uppercase;color:var(--ink);text-decoration:none;display:flex;gap:9px;align-items:center}
.brand .dot{width:9px;height:9px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 3px rgba(14,107,121,.18)}
.navlinks{display:flex;gap:6px;flex-wrap:wrap}
.navlinks a{font-family:'IBM Plex Mono',monospace;font-size:.74rem;letter-spacing:.08em;text-transform:uppercase;
  text-decoration:none;color:var(--muted);padding:7px 11px;border-radius:8px}
.navlinks a:hover{color:var(--ink);background:rgba(14,107,121,.09)}
.navlinks a[aria-current="page"]{color:var(--teal-deep);background:rgba(14,107,121,.12)}

/* ---------- hero ---------- */
.hero{padding:88px 0 64px}
.hero .loc{font-family:'IBM Plex Mono',monospace;font-size:.78rem;color:var(--muted);margin-top:26px}

/* ---------- stat strip ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r);overflow:hidden;margin-top:40px}
.stat{background:var(--card);padding:24px 22px}
.stat .n{font-family:'Fraunces',serif;font-size:2.3rem;font-weight:600;line-height:1;color:var(--teal-deep)}
.stat .l{font-family:'IBM Plex Mono',monospace;font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-top:9px}

/* ---------- cards / grid ---------- */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px}
.card h3{margin-top:0}

/* ---------- measured / modeled chips + legend (the signature) ---------- */
.chip{font-family:'IBM Plex Mono',monospace;font-size:.64rem;font-weight:600;letter-spacing:.1em;
  text-transform:uppercase;padding:4px 9px;border-radius:100px;display:inline-flex;align-items:center;gap:7px;white-space:nowrap}
.chip::before{content:"";width:14px;height:0;border-top-width:3px;border-top-style:solid;display:inline-block}
.chip.measured{background:rgba(14,107,121,.12);color:var(--teal-deep)}
.chip.measured::before{border-top-color:var(--teal);border-top-style:solid}
.chip.modeled{background:var(--amber-bg);color:var(--amber)}
.chip.modeled::before{border-top-color:var(--amber);border-top-style:dashed}

.legend-bar{display:flex;gap:14px;flex-wrap:wrap;align-items:center;
  font-family:'IBM Plex Mono',monospace;font-size:.74rem;color:var(--muted);
  padding:14px 18px;background:var(--card);border:1px solid var(--line);border-radius:100px;margin:8px 0 6px}

/* methods / integrity box */
.methods{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.methods>div{padding:26px 28px}
.methods .m-real{background:var(--card);border-right:1px solid var(--line)}
.methods .m-est{background:var(--amber-bg)}
.methods h4{font-family:'IBM Plex Mono',monospace;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;margin:0 0 14px;display:flex;align-items:center;gap:9px}
.methods .m-real h4{color:var(--teal-deep)}
.methods .m-est h4{color:var(--amber)}
.methods ul{margin:0;padding-left:18px}
.methods li{margin-bottom:8px;font-size:.96rem}
.methods li::marker{color:var(--muted)}

/* ---------- chart blocks ---------- */
.chartblock{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px 26px 30px;margin-top:24px}
.chartblock.estimate{background:var(--amber-bg);border:1.5px dashed var(--amber-line)}
.chart-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:6px;flex-wrap:wrap}
.chart-head h3{margin:0}
.chart-cap{font-size:.95rem;color:var(--muted);max-width:70ch;margin:.4em 0 18px}
.canvas-host{position:relative;height:340px}
.canvas-host.tall{height:380px}

/* finding pill */
.finding{font-family:'IBM Plex Mono',monospace;font-size:.78rem;letter-spacing:.02em;color:var(--teal-deep);
  background:rgba(14,107,121,.09);border-left:3px solid var(--teal);padding:12px 16px;border-radius:0 8px 8px 0;margin-top:18px}
.finding.amber{color:var(--amber);background:var(--amber-bg);border-left-color:var(--amber)}

/* ---------- downloads ---------- */
.dl{display:flex;flex-direction:column;gap:12px}
.dlbtn{display:flex;align-items:center;justify-content:space-between;gap:16px;text-decoration:none;
  background:var(--card);border:1px solid var(--line-strong);border-radius:12px;padding:18px 20px;color:var(--ink);transition:transform .12s ease,border-color .12s ease}
.dlbtn:hover{transform:translateY(-2px);border-color:var(--teal)}
.dlbtn.est{background:var(--amber-bg);border-color:var(--amber-line)}
.dlbtn .t{font-weight:600}
.dlbtn .meta{font-family:'IBM Plex Mono',monospace;font-size:.7rem;color:var(--muted);margin-top:3px;display:block}
.dlbtn .arrow{font-family:'IBM Plex Mono',monospace;font-size:.8rem;color:var(--teal);white-space:nowrap}
.dlbtn.est .arrow{color:var(--amber)}

/* ---------- skills ---------- */
.skills{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.skill{background:var(--card);padding:22px 24px}
.skill .s-n{font-family:'IBM Plex Mono',monospace;font-size:.66rem;letter-spacing:.14em;color:var(--teal);text-transform:uppercase}
.skill .s-t{font-family:'Fraunces',serif;font-size:1.2rem;font-weight:600;margin:6px 0 4px}
.skill p{font-size:.92rem;color:var(--muted);margin:0}

/* species bars (ecosystem, CSS-only) */
.sp-row{display:grid;grid-template-columns:140px 1fr 52px;align-items:center;gap:14px;margin-bottom:11px}
.sp-name{font-size:.92rem}
.sp-track{height:18px;background:rgba(12,36,41,.07);border-radius:6px;overflow:hidden}
.sp-fill{height:100%;background:var(--teal);border-radius:6px}
.sp-fill.prey{background:var(--reed)}
.sp-fill.problem{background:var(--amber)}
.sp-val{font-family:'IBM Plex Mono',monospace;font-size:.8rem;color:var(--muted);text-align:right}

/* note / callout */
.note{border:1px solid var(--line);border-left:3px solid var(--reed);background:var(--card);border-radius:0 10px 10px 0;padding:18px 22px;margin:22px 0}
.note .nlab{font-family:'IBM Plex Mono',monospace;font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--reed);margin-bottom:6px}

.refs{font-size:.92rem}
.refs li{margin-bottom:7px}

/* placeholder marker (resume) */
.ph{background:repeating-linear-gradient(45deg,rgba(192,118,42,.10),rgba(192,118,42,.10) 8px,transparent 8px,transparent 16px);
  border:1px dashed var(--amber-line);border-radius:8px;padding:2px 8px;font-family:'IBM Plex Mono',monospace;font-size:.85em;color:var(--amber)}

/* ---------- footer ---------- */
.footer{border-top:1px solid var(--line);padding:40px 0 56px;margin-top:24px}
.footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:baseline}
.footer .f-brand{font-family:'IBM Plex Mono',monospace;font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink)}
.footer small{font-family:'IBM Plex Mono',monospace;font-size:.72rem;color:var(--muted);line-height:1.7}

/* page-load reveal */
.reveal{opacity:0;transform:translateY(14px);animation:rise .7s cubic-bezier(.2,.7,.2,1) forwards}
.reveal:nth-child(2){animation-delay:.06s}
.reveal:nth-child(3){animation-delay:.12s}
@keyframes rise{to{opacity:1;transform:none}}

:focus-visible{outline:3px solid var(--amber);outline-offset:3px;border-radius:4px}

/* ---------- responsive ---------- */
@media (max-width:820px){
  body{font-size:16px}
  .section{padding:54px 0}
  .stats{grid-template-columns:repeat(2,1fr)}
  .grid2,.grid3,.methods,.skills{grid-template-columns:1fr}
  .methods .m-real{border-right:none;border-bottom:1px solid var(--line)}
  .navlinks a{padding:6px 8px}
  .sp-row{grid-template-columns:110px 1fr 44px;gap:9px}
}
@media (prefers-reduced-motion:reduce){
  .reveal{animation:none;opacity:1;transform:none}
  html{scroll-behavior:auto}
}