/* ═══════════════════════════════════════════════════════════════════════════
   bbp.css — the BuiltByPELT design system. ONE file, linked by every page.

   Structure and components live here so no page can drift. A page picks its
   FLAVOUR with a t-* class on <html>:

     t-legacy    Legacy · the house style. Paper, ink, brass. Letterpress.
     t-vessari   Vessari · deep navy, gold spark. Premium, quiet, generous.
     t-field     Safety / Jobsite · graphite, burnt amber. Field manual.
     t-studio    AI-Integrated Web · ivory, slate, muted gold. Editorial.

   Every flavour defines the SAME tokens in BOTH light and dark. Never add a
   colour that resolves in only one mode.
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── t-legacy (default) ─────────────────────────────────────────────────── */
:root,.t-legacy{
  --paper:#f3efe7; --paper-2:#ece5d7; --card:#fbf9f4; --ink:#1c2430;
  --text:#1c2430; --text-dim:#4a5462; --muted:#8a94a2; --line:#e3dccb;
  --accent:#8a6d3b; --accent-hi:#b9975b; --btn-ink:#fbf9f4;
  --grid:rgba(120,95,55,.07); --radius:2px; --rule:1px; --air:74px;
  --serif:"Iowan Old Style","Hoefler Text","Palatino Linotype",Palatino,Georgia,serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,monospace;
  --track:.22em; --h1:clamp(38px,6.4vw,70px); --h2:clamp(30px,4.4vw,46px);
}
@media (prefers-color-scheme:dark){
  :root:not([class*="t-"]),.t-legacy:not([data-mode="light"]){
    --paper:#191612; --paper-2:#211d18; --card:#211d18; --ink:#100e0a;
    --text:#f2ede3; --text-dim:#a99f8f; --muted:#8b8173; --line:#332d24;
    --accent:#c9a35f; --accent-hi:#dcb877; --btn-ink:#241c0e;
    --grid:rgba(210,185,140,.05);
  }
}
/* ── t-vessari — cool navy-tinted ground, gold spark ────────────────────── */
.t-vessari{
  --paper:#eef1f6; --paper-2:#e2e8f1; --card:#f8fafc; --ink:#0b1524;
  --text:#0e1a2b; --text-dim:#465569; --muted:#8593a6; --line:#d4dde8;
  --accent:#8a6a1e; --accent-hi:#b08c30; --btn-ink:#f8fafc;
  --grid:rgba(20,45,85,.06); --radius:6px; --rule:1px; --air:86px;
  --track:.3em; --h1:clamp(38px,6.2vw,68px); --h2:clamp(30px,4.2vw,44px);
}
@media (prefers-color-scheme:dark){
  .t-vessari:not([data-mode="light"]){
    --paper:#0b1524; --paper-2:#101f33; --card:#12203a; --ink:#060d17;
    --text:#eef2f7; --text-dim:#9aabbf; --muted:#63758b; --line:#1c2f49;
    --accent:#e9b44c; --accent-hi:#f5cd7c; --btn-ink:#0b1524;
    --grid:rgba(233,180,76,.06);
  }
}
/* ── t-field — graphite + burnt amber ───────────────────────────────────── */
.t-field{
  --paper:#f5f4f1; --paper-2:#eceae5; --card:#fcfbf9; --ink:#23282d;
  --text:#23282d; --text-dim:#525b64; --muted:#8b9199; --line:#e0ded7;
  --accent:#b45f1c; --accent-hi:#d4802f; --btn-ink:#fcfbf9;
  --grid:rgba(60,66,72,.06); --radius:3px; --rule:2px; --air:70px;
  --track:.2em; --h1:clamp(36px,6vw,64px); --h2:clamp(29px,4.2vw,44px);
}
@media (prefers-color-scheme:dark){
  .t-field:not([data-mode="light"]){
    --paper:#16191c; --paper-2:#1d2124; --card:#1d2124; --ink:#0e1113;
    --text:#eceae5; --text-dim:#a3a8ad; --muted:#6f767d; --line:#2b3034;
    --accent:#e0913f; --accent-hi:#f0ac63; --btn-ink:#16191c;
    --grid:rgba(224,145,63,.06);
  }
}
/* ── t-studio — warm ivory, slate, muted gold ───────────────────────────── */
.t-studio{
  --paper:#faf8f4; --paper-2:#f2eee5; --card:#ffffff; --ink:#2b3440;
  --text:#2b3440; --text-dim:#5a6472; --muted:#98a1ad; --line:#e8e2d6;
  --accent:#9c7c2c; --accent-hi:#c4a04a; --btn-ink:#ffffff;
  --grid:rgba(60,70,85,.05); --radius:4px; --rule:1px; --air:92px;
  --track:.26em; --h1:clamp(40px,6.8vw,76px); --h2:clamp(31px,4.6vw,48px);
}
@media (prefers-color-scheme:dark){
  .t-studio:not([data-mode="light"]){
    --paper:#14171b; --paper-2:#1b1f25; --card:#1b1f25; --ink:#0d0f12;
    --text:#f0eee9; --text-dim:#a6aeb9; --muted:#6d7783; --line:#282d34;
    --accent:#d4b05c; --accent-hi:#e6c880; --btn-ink:#14171b;
    --grid:rgba(212,176,92,.06);
  }
}

/* ── base ───────────────────────────────────────────────────────────────── */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--text);
  font:400 17px/1.65 var(--sans);-webkit-font-smoothing:antialiased}
a{color:inherit}
p{max-width:64ch}
.wrap{max-width:1080px;margin:0 auto;padding:0 28px}
section{padding:var(--air) 0;border-top:var(--rule) solid var(--line)}
.serif{font-family:var(--serif)}
.dim{color:var(--text-dim)}
.eyebrow{font:600 12px/1.4 var(--mono);letter-spacing:var(--track);
  text-transform:uppercase;color:var(--accent);margin:0 0 18px}
h1{font-family:var(--serif);font-weight:600;font-size:var(--h1);line-height:1.04;
  letter-spacing:-.02em;margin:0 0 24px;max-width:17ch;text-wrap:balance}
h2{font-family:var(--serif);font-weight:600;font-size:var(--h2);line-height:1.08;
  letter-spacing:-.01em;margin:0 0 20px;text-wrap:balance}
h3{font-family:var(--serif);font-weight:600;margin:0}
.lead{font-size:clamp(19px,2.2vw,23px);line-height:1.55}
em.accent{font-style:italic;color:var(--accent)}
strong.solid{color:var(--text)}

/* ── nav · product tabs ─────────────────────────────────────────────────── */
header.nav{position:sticky;top:0;z-index:20;
  background:color-mix(in srgb,var(--paper) 88%,transparent);
  backdrop-filter:blur(10px);border-bottom:var(--rule) solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:22px;height:64px}
.brand{font-weight:800;letter-spacing:-.01em;font-size:18px;text-decoration:none;flex:none}
.brand b{color:var(--accent)}
.nav nav{display:flex;gap:22px;margin-left:auto;overflow-x:auto}
.nav nav a{font:600 12.5px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;
  color:var(--text-dim);text-decoration:none;padding:6px 0;white-space:nowrap;
  border-bottom:2px solid transparent}
.nav nav a:hover{color:var(--text)}
.nav nav a[aria-current="page"]{color:var(--accent);border-bottom-color:var(--accent)}
.nav .btn{padding:9px 16px;flex:none}
@media(max-width:900px){.nav nav{display:none}}

/* ── buttons ────────────────────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;gap:8px;font:600 14px/1 var(--sans);
  padding:12px 20px;border-radius:var(--radius);text-decoration:none;
  border:1px solid var(--accent);background:var(--accent);color:var(--btn-ink);
  transition:background .15s,transform .15s}
.btn:hover{background:var(--accent-hi);border-color:var(--accent-hi);transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--accent);background:transparent}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
a:focus-visible,.btn:focus-visible,button:focus-visible{outline:2px solid var(--accent-hi);outline-offset:3px}

/* ── hero ───────────────────────────────────────────────────────────────── */
.hero{position:relative;padding:100px 0 82px;border-top:0;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:40px 40px;
  -webkit-mask-image:radial-gradient(120% 90% at 15% 0%,#000 40%,transparent 78%);
          mask-image:radial-gradient(120% 90% at 15% 0%,#000 40%,transparent 78%)}
.hero .wrap{position:relative;z-index:1}
.hero .lead{max-width:60ch;margin:0 0 32px;color:var(--text-dim)}
.hero .lead b{color:var(--text)}
.avail{margin-top:22px;font:600 12.5px/1.4 var(--mono);letter-spacing:.12em;
  text-transform:uppercase;color:var(--text-dim);display:flex;align-items:center;gap:9px}
.avail::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 25%,transparent)}

/* ── flagship banner ────────────────────────────────────────────────────── */
.tint{background:var(--paper-2)}
.flagtag{display:inline-flex;align-items:center;gap:10px;font:600 12px/1 var(--mono);
  letter-spacing:.18em;text-transform:uppercase;color:var(--accent);
  border:1px solid var(--accent);border-radius:var(--radius);padding:7px 12px;margin-bottom:22px}
.inscribe{font-family:var(--serif);font-weight:600;font-size:clamp(32px,5vw,54px);
  line-height:1.08;letter-spacing:-.015em;max-width:19ch;margin:0 0 10px;text-wrap:balance}
.inscribe .accent{color:var(--accent);font-style:italic}
.subline{font-family:var(--serif);font-style:italic;font-size:clamp(19px,2.4vw,26px);
  color:var(--muted);margin:0 0 26px;max-width:46ch}
.tint .lead{margin:0 0 18px}
.tint .lead:last-child{margin-bottom:0}

/* ── the paired ledger (what / how) ─────────────────────────────────────── */
.does{margin-top:28px;border-top:var(--rule) solid var(--line)}
.do{display:grid;grid-template-columns:46px 1fr 1fr;gap:12px 30px;padding:26px 0;
  border-bottom:var(--rule) solid var(--line);align-items:baseline}
.do .n{font:600 13px/1 var(--mono);color:var(--accent);letter-spacing:.1em}
.do h3{font-size:clamp(22px,2.8vw,28px);margin:0 0 6px;letter-spacing:-.01em}
.do .what{margin:0;color:var(--text-dim);font-size:16.5px;max-width:38ch}
.do .how{margin:0;color:var(--text-dim);font-size:15.5px;max-width:44ch}
.do .k{display:block;font:600 11.5px/1 var(--mono);letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent);margin:0 0 9px}
@media(max-width:880px){
  .do{grid-template-columns:46px 1fr;gap:0 22px}
  .do .how-cell{grid-column:2;margin-top:16px;padding-top:14px;border-top:1px dashed var(--line)}}

/* ── comparison ledger ──────────────────────────────────────────────────── */
table.cmp{width:100%;border-collapse:collapse;margin-top:24px;font-size:16.5px}
table.cmp th{text-align:left;padding:14px 18px;font:600 12px/1.3 var(--mono);
  letter-spacing:.12em;text-transform:uppercase;border-bottom:var(--rule) solid var(--line)}
table.cmp th.them{color:var(--muted)} table.cmp th.us{color:var(--accent)}
table.cmp td{padding:15px 18px;border-bottom:var(--rule) solid var(--line);vertical-align:top}
table.cmp td.them{color:var(--text-dim)} table.cmp td.us{color:var(--text);font-weight:500}
table.cmp tr td:first-child{width:50%;border-right:var(--rule) solid var(--line)}
.scrollx{overflow-x:auto}

/* ── split feature + access card ────────────────────────────────────────── */
.subsplit{margin-top:58px;padding-top:50px;border-top:var(--rule) solid var(--line)}
.feat{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
@media(max-width:820px){.feat{grid-template-columns:1fr;gap:28px}}
.keycard{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:0 20px 50px -30px rgba(8,14,22,.5)}
.keycard .row{display:flex;align-items:center;gap:12px;padding:12px 0;
  border-bottom:1px solid var(--line);font-size:15px}
.keycard .row:last-child{border-bottom:0}
.keycard .who{margin-left:auto;font:600 11px/1 var(--mono);color:var(--accent);letter-spacing:.08em}
.keycard .dot{width:9px;height:9px;border-radius:50%;background:var(--accent);flex:none}
.keycard .off{background:var(--muted);opacity:.4}
.keycard .strike{text-decoration:line-through;color:var(--text-dim)}

/* ── slim ruled band ────────────────────────────────────────────────────── */
.band{padding:56px 0;border-top:3px double var(--accent);border-bottom:3px double var(--accent);
  text-align:center;background:var(--paper)}
.band .wrap{max-width:760px}
.band .eyebrow{margin-bottom:14px}
.band h2{font-size:clamp(25px,3.4vw,36px);margin:0 auto 14px;max-width:26ch}
.band p{margin:0 auto;color:var(--text-dim);font-size:17px;max-width:62ch}

/* ── cards ──────────────────────────────────────────────────────────────── */
.cards{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);
  border:var(--rule) solid var(--line);margin-top:26px;border-radius:var(--radius);overflow:hidden}
.card{background:var(--paper);padding:30px 26px;display:flex;flex-direction:column;gap:10px}
.card .k{font:600 12px/1 var(--mono);letter-spacing:.12em;color:var(--accent);text-transform:uppercase}
.card h3{font-size:22px}
.card p{margin:0;color:var(--text-dim);font-size:15.5px}
.card .flag{font:600 10.5px/1 var(--mono);letter-spacing:.1em;color:var(--btn-ink);
  background:var(--accent);border-radius:var(--radius);padding:4px 8px;
  align-self:flex-start;text-transform:uppercase}
@media(max-width:820px){.cards{grid-template-columns:1fr}}
.tint .card{background:var(--paper-2)}

/* ── three-up signature ─────────────────────────────────────────────────── */
.sig{margin-top:52px;padding-top:34px;border-top:var(--rule) solid var(--line)}
.sig .eyebrow{margin-bottom:20px}
.thread{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.thread .t{border-top:2px solid var(--accent);padding-top:15px}
.thread .t h4{font-family:var(--serif);font-weight:600;font-size:18px;margin:0 0 6px}
.thread .t p{margin:0;color:var(--text-dim);font-size:15px}
@media(max-width:720px){.thread{grid-template-columns:1fr;gap:20px}}

/* ── closer + lead form ─────────────────────────────────────────────────── */
.closer{background:var(--ink);color:#efe9dd;text-align:center}
.closer h2{color:#f7f2e8;max-width:24ch;margin:0 auto 20px}
.closer p{margin:0 auto 28px;color:#bdb3a2}
.closer .avail{justify-content:center;color:#a2988a}
.lead-form{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;max-width:460px;margin:0 auto}
.lead-form input{flex:1;min-width:220px;background:rgba(0,0,0,.35);border:1px solid rgba(255,255,255,.18);
  border-radius:var(--radius);color:#efe9dd;font:15px var(--sans);padding:12px 14px}
.lead-form input:focus{outline:2px solid var(--accent-hi);outline-offset:1px;border-color:var(--accent)}
.lead-form .btn{white-space:nowrap}
.lead-msg{margin:14px auto 0;font:600 14px var(--sans);color:var(--accent-hi)}
.lead-msg.err{color:#e88}
.or{margin:14px auto 0;font-size:13px;color:#a2988a}
.or a{color:#d8cdb8}

/* ── footer ─────────────────────────────────────────────────────────────── */
/* extra bottom room so the fixed Kirk launcher never sits on top of footer text */
footer{padding:38px 0 104px;border-top:var(--rule) solid var(--line);background:var(--paper)}
footer .wrap{display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between}
footer .tag{font:600 12px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--text-dim)}
footer nav{display:flex;gap:18px;flex-wrap:wrap}
footer nav a{font:600 11.5px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;
  color:var(--text-dim);text-decoration:none}
footer nav a:hover{color:var(--accent)}

/* ── full-bleed drawing plates (bid-set sheets) ─────────────────────────── */
.plate{background:var(--ink);border-top:var(--rule) solid var(--line);overflow:hidden}
.plate .inner{max-width:1080px;margin:0 auto;padding:44px 28px 0;position:relative}
.plate .inner::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(201,163,95,.10) 1px,transparent 1px),
    linear-gradient(90deg,rgba(201,163,95,.10) 1px,transparent 1px);background-size:26px 26px}
.sheets{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:30px}
.sheetfig{margin:0}
.sheetfig svg{display:block;width:100%;height:auto;box-shadow:0 20px 46px -22px rgba(0,0,0,.8)}
@media (prefers-color-scheme:dark){.sheetfig svg{filter:brightness(.84) saturate(.92)}}
[data-mode="dark"] .sheetfig svg{filter:brightness(.84) saturate(.92)}
[data-mode="light"] .sheetfig svg{filter:none}
.sheetfig figcaption{margin-top:14px;display:flex;flex-direction:column;gap:5px}
.sheetfig .sn{font:600 10.5px/1 var(--mono);letter-spacing:.2em;text-transform:uppercase;color:#c9a35f}
.sheetfig .st{font-family:var(--serif);font-size:19px;font-weight:600;color:#efe6d4;letter-spacing:-.01em}
.sheetfig .sd{font-size:14.5px;line-height:1.5;color:#a99f8f;max-width:44ch}
.plate .tb{position:relative;display:grid;grid-template-columns:auto 1fr auto;gap:20px;
  align-items:center;border-top:1px solid rgba(217,193,145,.34);margin-top:26px;padding:13px 0 18px;
  font:600 11px/1 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:#c9a35f}
.plate .tb .mid{color:#9c9083;font-family:var(--serif);font-style:italic;font-size:15.5px;
  letter-spacing:0;text-transform:none}
@media(max-width:820px){.sheets{grid-template-columns:1fr;gap:34px}
  .plate .tb{grid-template-columns:1fr;gap:8px}}
/* photo slots — a real jobsite photo drops into the same frame */
.sheetfig img.shot{display:block;width:100%;height:auto;box-shadow:0 20px 46px -22px rgba(0,0,0,.8);
  filter:grayscale(1) sepia(.44) contrast(1.05) brightness(.94)}
@media (prefers-color-scheme:dark){.sheetfig img.shot{filter:grayscale(1) sepia(.32) contrast(.96) brightness(.8)}}

/* ── Kirk · the assistant on the page ───────────────────────────────────── */
.kirk-launch{position:fixed;right:22px;bottom:22px;z-index:60;display:inline-flex;
  align-items:center;gap:10px;padding:13px 18px;border-radius:var(--radius);cursor:pointer;
  border:1px solid var(--accent);background:var(--accent);color:var(--btn-ink);
  font:600 13px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;
  box-shadow:0 14px 34px -14px rgba(8,14,22,.55);transition:background .15s,transform .15s}
.kirk-launch:hover{background:var(--accent-hi);transform:translateY(-1px)}
.kirk-launch .pip{width:7px;height:7px;border-radius:50%;background:var(--btn-ink);opacity:.85}
.kirk-panel{position:fixed;right:22px;bottom:22px;z-index:61;width:min(390px,calc(100vw - 32px));
  height:min(560px,calc(100vh - 44px));background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:0 30px 70px -24px rgba(8,14,22,.6);
  display:none;flex-direction:column;overflow:hidden}
.kirk-panel.on{display:flex}
.kirk-head{display:flex;align-items:center;gap:10px;padding:14px 16px;
  border-bottom:1px solid var(--line);background:var(--paper-2)}
.kirk-head .nm{font-family:var(--serif);font-weight:600;font-size:17px}
.kirk-head .sub{font:600 10px/1 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--accent)}
.kirk-head .x{margin-left:auto;background:none;border:0;cursor:pointer;color:var(--text-dim);
  font-size:20px;line-height:1;padding:2px 4px}
.kirk-head .x:hover{color:var(--text)}
.kirk-log{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}
.kirk-msg{max-width:86%;font-size:15px;line-height:1.55;padding:10px 13px;border-radius:var(--radius)}
.kirk-msg.bot{background:var(--paper-2);border:1px solid var(--line);align-self:flex-start;color:var(--text)}
.kirk-msg.me{background:var(--accent);color:var(--btn-ink);align-self:flex-end;border:1px solid var(--accent)}
.kirk-msg.sys{align-self:center;text-align:center;background:transparent;border:0;color:var(--text-dim);
  font:600 11px/1.5 var(--mono);letter-spacing:.1em;text-transform:uppercase;max-width:100%}
.kirk-dots span{display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--accent);
  margin-right:3px;animation:kb 1.1s infinite}
.kirk-dots span:nth-child(2){animation-delay:.15s}.kirk-dots span:nth-child(3){animation-delay:.3s}
@keyframes kb{0%,60%,100%{opacity:.25}30%{opacity:1}}
@media(prefers-reduced-motion:reduce){.kirk-dots span{animation:none;opacity:.6}}
.kirk-form{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line);background:var(--paper)}
.kirk-form input{flex:1;min-width:0;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);color:var(--text);font:15px var(--sans);padding:10px 12px}
.kirk-form input:focus{outline:2px solid var(--accent-hi);outline-offset:1px;border-color:var(--accent)}
.kirk-form button{border:1px solid var(--accent);background:var(--accent);color:var(--btn-ink);
  border-radius:var(--radius);padding:0 14px;cursor:pointer;font:600 13px/1 var(--mono)}
.kirk-form button:disabled{opacity:.5;cursor:default}
.kirk-form .mic{background:transparent;color:var(--text-dim);border-color:var(--line);font-size:15px}
.kirk-form .mic:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}

/* ── reveal ─────────────────────────────────────────────────────────────── */
.rise{opacity:0;transform:translateY(16px);transition:opacity .7s ease,transform .7s ease}
.rise.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rise{opacity:1;transform:none;transition:none}}
