/* ==========================================================
   HUFA · one stylesheet, three pages
   Four palettes: requester / helper  x  light / dark.
   Requester is clay on warm paper. Helper is teal on cool grey.
   ========================================================== */

:root{
  --ground:#F6F1EA; --surface:#FFFCF8; --sunk:#F1EAE1;
  --ink:#221A16; --ink-soft:#6B5D55; --ink-faint:#9B8B80;
  --accent:#D9694A; --accent-deep:#B24E32; --accent-wash:#F5E2DA; --accent-on:#FFF9F6;
  --line:#E3D9CE; --line-strong:#CFC1B4;
  --shadow:0 1px 2px rgba(34,26,22,.05),0 16px 38px -22px rgba(34,26,22,.42);
  --shell:1140px;
}
:root[data-mode="helper"]{
  --ground:#EDF1F0; --surface:#FBFDFC; --sunk:#E5EBE9;
  --ink:#10201C; --ink-soft:#4E635D; --ink-faint:#7B908A;
  --accent:#1F6B5C; --accent-deep:#17564A; --accent-wash:#D8E8E3; --accent-on:#F4FBF8;
  --line:#D4DEDB; --line-strong:#B9C7C3;
  --shadow:0 1px 2px rgba(16,32,28,.05),0 16px 38px -22px rgba(16,32,28,.42);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --ground:#16100D; --surface:#1F1814; --sunk:#191310;
    --ink:#F4EDE6; --ink-soft:#AB9A8D; --ink-faint:#7E6F64;
    --accent:#E8836A; --accent-deep:#F0A08B; --accent-wash:#33201A; --accent-on:#17100D;
    --line:#332821; --line-strong:#4A3B31;
    --shadow:0 1px 2px rgba(0,0,0,.5),0 18px 44px -24px rgba(0,0,0,.9);
  }
  :root:not([data-theme="light"])[data-mode="helper"]{
    --ground:#0C1513; --surface:#141E1B; --sunk:#101917;
    --ink:#E9F2EF; --ink-soft:#93A8A2; --ink-faint:#6B807A;
    --accent:#58AE97; --accent-deep:#7CC6B1; --accent-wash:#172C27; --accent-on:#08110F;
    --line:#22322E; --line-strong:#35473F;
  }
}
:root[data-theme="dark"]{
  --ground:#16100D; --surface:#1F1814; --sunk:#191310;
  --ink:#F4EDE6; --ink-soft:#AB9A8D; --ink-faint:#7E6F64;
  --accent:#E8836A; --accent-deep:#F0A08B; --accent-wash:#33201A; --accent-on:#17100D;
  --line:#332821; --line-strong:#4A3B31;
  --shadow:0 1px 2px rgba(0,0,0,.5),0 18px 44px -24px rgba(0,0,0,.9);
}
:root[data-theme="dark"][data-mode="helper"]{
  --ground:#0C1513; --surface:#141E1B; --sunk:#101917;
  --ink:#E9F2EF; --ink-soft:#93A8A2; --ink-faint:#6B807A;
  --accent:#58AE97; --accent-deep:#7CC6B1; --accent-wash:#172C27; --accent-on:#08110F;
  --line:#22322E; --line-strong:#35473F;
}

*{box-sizing:border-box}
body{margin:0; background:var(--ground); color:var(--ink);
  font-family:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px; line-height:1.6; -webkit-font-smoothing:antialiased;
  transition:background-color .45s ease,color .45s ease}
img{max-width:100%}
a{color:var(--accent-deep)}

/* shell + rhythm ----------------------------------------- */
.shell{max-width:var(--shell); margin:0 auto; padding-inline:24px}
.prose{max-width:66ch}
.label{font-family:"IBM Plex Mono",ui-monospace,monospace; font-size:11px;
  letter-spacing:.11em; text-transform:uppercase; color:var(--ink-soft)}

/* header -------------------------------------------------- */
.site-head{position:sticky; top:0; z-index:40; background:color-mix(in srgb,var(--ground) 88%,transparent);
  backdrop-filter:saturate(1.4) blur(10px); border-bottom:1px solid var(--line);
  transition:background-color .45s ease,border-color .45s ease}
.head-in{display:flex; align-items:center; gap:20px; padding-block:14px}
.brand{display:flex; align-items:baseline; gap:11px; text-decoration:none; color:inherit; flex:none}
.brand b{font-weight:600; font-size:19px; letter-spacing:.22em; line-height:1}
.brand i{font-family:"Newsreader",Georgia,serif; font-size:14px; color:var(--ink-soft); font-style:italic}
.nav{display:flex; gap:26px; margin-left:auto; align-items:center}
.nav a{font-size:14.5px; color:var(--ink-soft); text-decoration:none; white-space:nowrap}
.nav a:hover,.nav a[aria-current="page"]{color:var(--ink)}
.btn{font-family:"IBM Plex Sans",sans-serif; font-size:14px; font-weight:600; cursor:pointer;
  border-radius:5px; padding:10px 17px; text-decoration:none; display:inline-block;
  color:var(--accent-on); background:var(--accent); border:1px solid var(--accent-deep);
  transition:background-color .15s ease}
.btn:hover{background:var(--accent-deep)}
.btn.ghost{color:var(--ink); background:transparent; border-color:var(--line-strong)}
.btn.ghost:hover{border-color:var(--accent); color:var(--accent-deep); background:transparent}
.burger{display:none; margin-left:auto; background:transparent; border:1px solid var(--line-strong);
  border-radius:5px; padding:8px 11px; cursor:pointer; color:var(--ink); font-size:15px}

/* mode switch --------------------------------------------- */
.switchwrap{padding-block:26px 0; display:flex; gap:20px; align-items:center; flex-wrap:wrap}
.switch{display:flex; gap:5px; background:var(--sunk); border:1px solid var(--line);
  border-radius:8px; padding:5px; transition:background-color .45s ease,border-color .45s ease}
.switch button{font-family:inherit; font-size:14.5px; font-weight:500; color:var(--ink-soft);
  background:transparent; border:0; border-radius:5px; padding:9px 18px; cursor:pointer;
  display:flex; flex-direction:column; align-items:center; gap:1px;
  transition:background-color .25s ease,color .25s ease}
.switch button .sub{font-family:"IBM Plex Mono",ui-monospace,monospace; font-size:9.5px;
  letter-spacing:.1em; text-transform:uppercase; opacity:.72}
.switch button[aria-selected="true"]{background:var(--accent); color:var(--accent-on)}
.switch button:not([aria-selected="true"]):hover{color:var(--ink)}
.switchnote{font-size:13px; color:var(--ink-soft); margin:0; max-width:46ch}

/* hero ---------------------------------------------------- */
.hero{padding-block:46px 0}
.hero-grid{display:grid; grid-template-columns:1.02fr .98fr; gap:52px; align-items:center}
h1{font-family:"Newsreader",Georgia,serif; font-weight:400; font-size:clamp(34px,4.4vw,53px);
  line-height:1.06; letter-spacing:-.014em; margin:0 0 20px; text-wrap:balance}
h1 em{font-style:italic; color:var(--accent-deep); transition:color .45s ease}
.lede{font-size:17.5px; color:var(--ink-soft); margin:0 0 26px; max-width:50ch}
.lede b{color:var(--ink); font-weight:500}
.cta-row{display:flex; gap:12px; flex-wrap:wrap; align-items:center}

/* proof band ---------------------------------------------- */
.band{margin-top:46px; border-block:1px solid var(--line); padding-block:20px;
  display:grid; grid-template-columns:repeat(3,1fr); gap:26px}
.band div{display:flex; flex-direction:column; gap:3px}
.band .v{font-weight:600; font-size:15.5px}
.band .d{font-size:14px; color:var(--ink-soft)}

/* chat thread --------------------------------------------- */
.device{background:var(--surface); border:1px solid var(--line); border-radius:11px;
  box-shadow:var(--shadow); padding:18px 16px;
  transition:background-color .45s ease,border-color .45s ease}
.device-top{display:flex; justify-content:space-between; align-items:center;
  border-bottom:1px solid var(--line); padding-bottom:11px; margin-bottom:15px}
.device-top .who{font-weight:600; font-size:14px}
.device-top .meta{font-family:"IBM Plex Mono",ui-monospace,monospace; font-size:11px;
  color:var(--ink-faint); font-variant-numeric:tabular-nums}
.thread{display:flex; flex-direction:column; gap:9px}
.msg{max-width:86%; padding:10px 14px; font-size:14.5px; line-height:1.45; border-radius:15px}
.msg.them{align-self:flex-start; background:var(--sunk); border:1px solid var(--line); border-bottom-left-radius:4px}
.msg.you{align-self:flex-end; background:var(--accent); color:var(--accent-on); border-bottom-right-radius:4px}
.msg.ask{font-family:"Newsreader",Georgia,serif; font-style:italic; font-size:17.5px; line-height:1.4; max-width:94%}
.sys{align-self:center; text-align:center; font-family:"IBM Plex Mono",ui-monospace,monospace;
  font-size:10.5px; letter-spacing:.05em; color:var(--ink-faint); padding:4px 0; font-variant-numeric:tabular-nums}
.pincard{align-self:center; text-align:center; border:1px dashed var(--accent);
  background:var(--accent-wash); border-radius:8px; padding:12px 22px; margin:3px 0}
.pincard .code{font-family:"IBM Plex Mono",ui-monospace,monospace; font-size:26px; font-weight:600;
  letter-spacing:.34em; color:var(--accent-deep); text-indent:.34em}
.pincard .cap{font-size:12px; color:var(--ink-soft); margin-top:4px; max-width:32ch}
.caption{font-size:12.5px; color:var(--ink-faint); margin:12px 2px 0}

/* job card ------------------------------------------------ */
.job{background:var(--surface); border:1px solid var(--line); border-radius:11px;
  box-shadow:var(--shadow); padding:22px}
.job .jsaid{font-family:"Newsreader",Georgia,serif; font-style:italic; font-size:21px;
  line-height:1.35; margin:0 0 16px}
.jrow{display:flex; gap:24px; flex-wrap:wrap; padding-top:15px; border-top:1px solid var(--line);
  font-variant-numeric:tabular-nums}
.jrow div{display:flex; flex-direction:column; gap:3px}
.jrow .v{font-family:"IBM Plex Mono",ui-monospace,monospace; font-size:16px; font-weight:500}
.jrow .v.big{font-size:22px; color:var(--accent-deep)}
.claim{width:100%; margin-top:16px; font-family:inherit; font-size:15px; font-weight:600;
  color:var(--accent-on); background:var(--accent); border:1px solid var(--accent-deep);
  border-radius:5px; padding:13px; cursor:pointer}
.claim:hover{background:var(--accent-deep)}

/* sections ------------------------------------------------ */
section{padding-block:66px 0}
.sec-head{display:flex; align-items:baseline; justify-content:space-between; gap:20px;
  flex-wrap:wrap; margin-bottom:26px; padding-bottom:12px; border-bottom:1px solid var(--line)}
h2{font-family:"IBM Plex Mono",ui-monospace,monospace; font-size:11px; font-weight:500;
  letter-spacing:.16em; text-transform:uppercase; color:var(--ink-faint); margin:0}
.sec-head p{margin:0; font-size:15px; color:var(--ink-soft); max-width:52ch}

.cols3{display:grid; grid-template-columns:repeat(3,1fr); gap:34px}
.cols2{display:grid; grid-template-columns:repeat(2,1fr); gap:34px}
.sit q{display:block; font-family:"Newsreader",Georgia,serif; font-style:italic; font-size:19px;
  line-height:1.35; quotes:none; border-left:2px solid var(--accent); padding-left:15px;
  transition:border-color .45s ease}
.sit p{margin:9px 0 0 17px; color:var(--ink-soft); font-size:14.5px}
.thread-line{font-family:"Newsreader",Georgia,serif; font-size:22px; line-height:1.45;
  margin:38px 0 0; max-width:56ch}
.thread-line b{font-weight:500; font-style:italic; color:var(--accent-deep)}

.steps{list-style:none; padding:0; margin:0; counter-reset:s;
  display:grid; grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); gap:30px 34px}
.steps li{counter-increment:s; display:flex; flex-direction:column; gap:5px}
.steps li::before{content:counter(s,decimal-leading-zero);
  font-family:"IBM Plex Mono",ui-monospace,monospace; font-size:12px; color:var(--accent);
  transition:color .45s ease}
.steps b{font-weight:600; font-size:16px}
.steps p{margin:0; color:var(--ink-soft); font-size:14.5px}

.build{display:grid; grid-template-columns:1fr 1fr; gap:34px}
.build h3{font-family:"IBM Plex Mono",ui-monospace,monospace; font-size:11px; font-weight:500;
  letter-spacing:.11em; text-transform:uppercase; margin:0 0 14px; display:flex; align-items:center; gap:8px}
.dot{width:7px; height:7px; border-radius:50%; background:var(--accent); flex:none}
.dot.soon{background:transparent; border:1.5px solid var(--line-strong)}
.build ul{list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:9px}
.build li{font-size:14.5px; padding-left:16px; position:relative; color:var(--ink-soft)}
.build li::before{content:""; position:absolute; left:0; top:10px; width:7px; height:1px; background:var(--line-strong)}
.build .now li{color:var(--ink)}

dl.trust{margin:0; display:grid; grid-template-columns:repeat(2,1fr); gap:26px 34px}
dl.trust dt{font-weight:600; font-size:16px}
dl.trust dd{margin:5px 0 0; color:var(--ink-soft); font-size:14.5px}

/* form ---------------------------------------------------- */
.form-grid{display:grid; grid-template-columns:1.5fr 1fr; gap:34px; align-items:start}
.panel{background:var(--surface); border:1px solid var(--line); border-radius:9px;
  box-shadow:var(--shadow); padding:28px 26px 26px;
  transition:background-color .45s ease,border-color .45s ease}
.panel h3{font-size:19px; font-weight:600; letter-spacing:-.01em; margin:0 0 4px}
.panel-note{font-size:14px; color:var(--ink-soft); margin:0 0 22px}
.aside{display:flex; flex-direction:column; gap:22px; padding-top:6px}
.aside div{display:flex; flex-direction:column; gap:5px}
.aside b{font-size:15px}
.aside p{margin:0; font-size:14px; color:var(--ink-soft)}
.field{display:flex; flex-direction:column; gap:7px; margin-bottom:19px}
.field > label,.legend{font-family:"IBM Plex Mono",ui-monospace,monospace; font-size:11px;
  letter-spacing:.1em; text-transform:uppercase; color:var(--ink-soft)}
.hint{font-size:13px; color:var(--ink-faint); margin:0}
input[type=text],input[type=tel],input[type=email],textarea{font:inherit; color:var(--ink);
  background:var(--sunk); border:1px solid var(--line-strong); border-radius:4px;
  padding:11px 13px; width:100%; transition:border-color .12s ease,background-color .12s ease}
textarea{font-family:"Newsreader",Georgia,serif; font-size:19px; line-height:1.45; min-height:92px; resize:vertical}
textarea::placeholder{font-style:italic; color:var(--ink-faint)}
input::placeholder{color:var(--ink-faint)}
input:focus,textarea:focus{border-color:var(--accent); background:var(--surface); outline:none}
input:focus-visible,textarea:focus-visible,button:focus-visible,a:focus-visible{
  outline:2px solid var(--accent-deep); outline-offset:2px}
.examples{display:flex; flex-wrap:wrap; gap:7px; margin-top:2px}
.ex{font-family:"Newsreader",Georgia,serif; font-style:italic; font-size:14.5px; color:var(--ink-soft);
  background:transparent; border:1px dashed var(--line-strong); border-radius:999px;
  padding:5px 13px; cursor:pointer; text-align:left; transition:color .12s ease,border-color .12s ease}
.ex:hover{color:var(--accent-deep); border-color:var(--accent)}
.row{display:flex; gap:14px}
.row > .field{flex:1; min-width:0}
.bands{display:flex; flex-wrap:wrap; gap:7px}
.band-opt{position:relative; font-family:"IBM Plex Mono",ui-monospace,monospace; font-size:13px;
  border:1px solid var(--line-strong); border-radius:4px; padding:8px 12px; cursor:pointer;
  color:var(--ink-soft); font-variant-numeric:tabular-nums;
  transition:background-color .12s ease,border-color .12s ease,color .12s ease}
.band-opt input{position:absolute; opacity:0; inset:0; cursor:pointer}
.band-opt:hover{border-color:var(--accent); color:var(--ink)}
.band-opt:has(input:checked){background:var(--accent); border-color:var(--accent-deep); color:var(--accent-on)}
.band-opt:focus-within{outline:2px solid var(--accent-deep); outline-offset:2px}
.err{font-size:13px; color:var(--accent-deep)}
.err:empty{display:none}
.area-echo{font-family:"IBM Plex Mono",ui-monospace,monospace; font-size:13px; color:var(--accent-deep)}
.area-echo:empty{display:none}
.submit-row{display:flex; align-items:center; gap:16px; flex-wrap:wrap; margin-top:24px}
.go{font-family:inherit; font-size:15px; font-weight:600; color:var(--accent-on);
  background:var(--accent); border:1px solid var(--accent-deep); border-radius:4px;
  padding:12px 22px; cursor:pointer; transition:background-color .12s ease}
.go:hover{background:var(--accent-deep)}
.next{font-size:13px; color:var(--ink-soft); max-width:30ch; margin:0}
.done{display:none}
.done h3{font-family:"Newsreader",Georgia,serif; font-size:27px; font-weight:400; margin:0 0 12px}
.done p{color:var(--ink-soft); margin:0 0 12px}
.done .echo{font-family:"Newsreader",Georgia,serif; font-style:italic; font-size:19px; color:var(--ink);
  border-left:2px solid var(--accent); padding-left:16px; margin:18px 0 0}

/* flip invitation ----------------------------------------- */
.flip{margin-top:46px; border:1px solid var(--line); border-radius:9px; background:var(--sunk);
  padding:22px 24px; display:flex; justify-content:space-between; align-items:center; gap:18px; flex-wrap:wrap}
.flip p{margin:0; font-size:15px; color:var(--ink-soft); max-width:52ch}
.flip p b{color:var(--ink); font-weight:600}

/* placeholder marker -------------------------------------- */
.todo{border:1px dashed var(--accent); background:var(--accent-wash); border-radius:6px;
  padding:14px 16px; display:flex; flex-direction:column; gap:5px}
.todo .tag{font-family:"IBM Plex Mono",ui-monospace,monospace; font-size:10px; letter-spacing:.13em;
  text-transform:uppercase; color:var(--accent-deep)}
.todo .val{font-size:16px; font-weight:600}
.todo .why{font-size:13px; color:var(--ink-soft)}

/* about page ---------------------------------------------- */
.pagehead{padding-block:56px 0}
.pagehead h1{font-size:clamp(32px,4vw,46px)}
.kicker{font-family:"IBM Plex Mono",ui-monospace,monospace; font-size:11px; letter-spacing:.16em;
  text-transform:uppercase; color:var(--accent-deep); margin:0 0 16px}
.story p{font-size:17px; margin:0 0 20px; max-width:66ch}
.story h3{font-family:"IBM Plex Sans",sans-serif; font-size:20px; font-weight:600;
  margin:40px 0 14px; max-width:66ch}
.pull{font-family:"Newsreader",Georgia,serif; font-size:clamp(22px,2.6vw,29px); line-height:1.35;
  margin:36px 0; padding-left:22px; border-left:3px solid var(--accent); max-width:24ch;
  color:var(--ink)}
.pull em{font-style:italic; color:var(--accent-deep)}

/* footer -------------------------------------------------- */
.site-foot{margin-top:76px; border-top:1px solid var(--line); padding-block:44px 40px}
.foot-grid{display:grid; grid-template-columns:1.7fr 1fr 1fr 1fr; gap:34px}
.foot-grid h4{font-family:"IBM Plex Mono",ui-monospace,monospace; font-size:10.5px; font-weight:500;
  letter-spacing:.13em; text-transform:uppercase; color:var(--ink-faint); margin:0 0 12px}
.foot-grid ul{list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:9px}
.foot-grid a{font-size:14px; color:var(--ink-soft); text-decoration:none}
.foot-grid a:hover{color:var(--ink)}
.foot-blurb{font-size:14px; color:var(--ink-soft); margin:12px 0 0; max-width:34ch}
.foot-base{display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap;
  margin-top:36px; padding-top:20px; border-top:1px solid var(--line);
  font-size:13px; color:var(--ink-faint)}

/* responsive ---------------------------------------------- */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr; gap:36px}
  .form-grid{grid-template-columns:1fr; gap:28px}
  .foot-grid{grid-template-columns:1fr 1fr; gap:30px}
}
@media (max-width:760px){
  .nav{position:absolute; top:100%; left:0; right:0; flex-direction:column; align-items:stretch;
    gap:0; background:var(--surface); border-bottom:1px solid var(--line); padding:8px 24px 16px;
    display:none}
  .nav.open{display:flex}
  .nav a{padding-block:11px; border-bottom:1px solid var(--line)}
  .nav .btn{margin-top:12px; text-align:center}
  .burger{display:block}
  .head-in{position:relative}
  .cols3,.cols2,.build,dl.trust{grid-template-columns:1fr; gap:26px}
  .band{grid-template-columns:1fr; gap:16px}
  section{padding-block:50px 0}
}
@media (max-width:520px){
  .row{flex-direction:column; gap:0}
  .panel{padding:22px 18px 20px}
  .foot-grid{grid-template-columns:1fr}
  .msg{max-width:92%}
}
@media (prefers-reduced-motion:reduce){*{transition:none !important; animation:none !important}}

/* anchor targets must clear the sticky header */
html{scroll-behavior:smooth}
section[id]{scroll-margin-top:92px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}