/* ============================================================
   ATLAS — shared design system for the utility tool portfolio
   World and rules: DESIGN.md. Do not fork per site; extend via
   the per-tool block at the bottom of each page.
   ============================================================ */

:root{
  /* ground */
  --paper:#edeee9;
  --paper-2:#e4e6df;
  /* ink */
  --ink:#191a16;
  --ink-2:#55584e;
  --ink-3:#616457;
  /* rules — never used for text */
  --rule:#a3a69b;
  --rule-2:#c8cabf;
  /* plate inks */
  --prussian:#16324b;
  --vermillion:#be3a1d;
  --vermillion-ink:#a32e15;
  --ochre:#c0871a;
  /* text tone, darker than the fill: #8a6010 measured 4.44:1 on --paper-2, under AA */
  --ochre-ink:#7f580f;
  --olive:#5b6a33;
  --olive-ink:#4a5629;
  /* system */
  --sans:ui-sans-serif,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --ease:cubic-bezier(.16,1,.3,1);
  --plate-max:74rem;
  --key-w:20.5rem;
}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}

body{
  background:var(--paper);color:var(--ink);font-family:var(--sans);
  font-size:16px;line-height:1.5;
  font-variant-numeric:tabular-nums lining-nums;
  padding-bottom:env(safe-area-inset-bottom);
}

/* ── legend lettering: the atlas key. A system with defined roles,
      not an eyebrow to sprinkle on sections. ─────────────────── */
.legend{
  font-size:.6875rem;letter-spacing:.14em;text-transform:uppercase;
  font-weight:600;color:var(--ink-2);
}
.legend-ink{color:var(--ink)}

/* ── masthead ─────────────────────────────────────────────── */
.masthead{
  border-bottom:2px solid var(--ink);
  display:flex;justify-content:space-between;align-items:baseline;
  gap:1rem;padding:.6rem 1.5rem;flex-wrap:wrap;
}
.masthead .brand{color:var(--ink);text-decoration:none}
.masthead nav{display:flex;gap:1.25rem;flex-wrap:wrap}
.masthead a{color:var(--ink-2);text-decoration:none}
.masthead nav a{border-bottom:1px solid var(--rule-2)}
.masthead a:hover{color:var(--vermillion-ink);border-color:var(--vermillion-ink)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--vermillion);outline-offset:3px
}

.wrap{max-width:var(--plate-max);margin:0 auto;padding:0 1.5rem}

/* ── title block ──────────────────────────────────────────── */
.title{padding:2rem 0 1.25rem;border-bottom:1px solid var(--rule)}
h1{
  font-size:clamp(1.5rem,3.6vw,2.375rem);line-height:1.12;
  letter-spacing:-.022em;font-weight:640;max-width:24ch;text-wrap:balance;
}
.standfirst{margin-top:.6rem;color:var(--ink-2);max-width:62ch;font-size:1.0625rem}

/* ── the sheet: key beside plate ──────────────────────────── */
.sheet{display:grid;grid-template-columns:var(--key-w) 1fr;gap:0;align-items:start}
.key{border-right:1px solid var(--rule);padding:1.25rem 1.5rem 2rem 0}
.plate-col{padding:1.25rem 0 2rem 1.5rem;min-width:0}

/* ── the key: inputs on ruled baselines ───────────────────── */
.group{margin-bottom:1.5rem}
.group > .legend{display:block;padding-bottom:.4rem;border-bottom:1.5px solid var(--ink)}
.row{
  display:grid;grid-template-columns:1fr 7.5rem;align-items:center;gap:.75rem;
  border-bottom:1px solid var(--rule-2);padding:.4rem 0;
}
.row.stack{grid-template-columns:1fr}
.row label{font-size:.875rem;color:var(--ink-2);line-height:1.3}
.row .hint{display:block;font-size:.75rem;color:var(--ink-3);margin-top:.1rem}
.row input,.row select,.row textarea{
  font:inherit;font-size:.9375rem;font-variant-numeric:tabular-nums lining-nums;
  width:100%;padding:.3rem .45rem;text-align:right;
  background:var(--paper-2);color:var(--ink);
  border:1px solid var(--rule);border-radius:0;
}
.row select,.row input[type=date],.row input[type=text]{text-align:left}
.row input:focus,.row select:focus{outline:2px solid var(--vermillion);outline-offset:1px;background:#fff}
.row input:disabled{color:var(--ink-3);background:var(--paper);cursor:not-allowed}
.row input[aria-invalid=true]{border-color:var(--vermillion-ink);border-width:1.5px}
.field-error{grid-column:1/-1;font-size:.75rem;color:var(--vermillion-ink);padding-top:.15rem}

/* segmented control */
.toggle{display:flex;gap:0;margin-top:.15rem;position:relative}
.toggle input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}
.toggle label{
  flex:1;text-align:center;font-size:.8125rem;padding:.3rem .2rem;cursor:pointer;
  border:1px solid var(--rule);color:var(--ink-2);background:var(--paper-2);
}
.toggle label + label{border-left:0}
.toggle input:checked + label{background:var(--prussian);color:var(--paper);border-color:var(--prussian)}
.toggle input:focus-visible + label{outline:2px solid var(--vermillion);outline-offset:1px}

/* repeating rows — card per row, never a table, for mobile */
.repeat{display:flex;flex-direction:column;gap:.5rem}
.repeat-item{border:1px solid var(--rule);padding:.5rem .6rem;background:var(--paper-2)}
.repeat-item .row{border-bottom-color:var(--rule-2)}
.repeat-item .row:last-of-type{border-bottom:0}
.repeat-head{display:flex;justify-content:space-between;align-items:center;gap:.5rem;margin-bottom:.25rem}
.btn{
  font:inherit;font-size:.8125rem;padding:.35rem .7rem;cursor:pointer;
  background:var(--paper-2);color:var(--ink);border:1px solid var(--ink);border-radius:0;
}
.btn:hover{background:var(--prussian);color:var(--paper);border-color:var(--prussian)}
.btn-quiet{border-color:var(--rule);color:var(--ink-2);padding:.2rem .5rem;font-size:.75rem}
.btn-quiet:hover{background:var(--vermillion-ink);color:var(--paper);border-color:var(--vermillion-ink)}

/* ── the plate ────────────────────────────────────────────── */
.plate{border:2px solid var(--ink);background:var(--paper-2);padding:1.25rem 1.25rem 1rem}
.plate + .plate{margin-top:1.25rem}
.plate-head{
  display:flex;justify-content:space-between;align-items:baseline;
  gap:1rem;padding-bottom:.75rem;border-bottom:1px solid var(--rule);margin-bottom:1.25rem;
  flex-wrap:wrap;
}

/* bar rows */
.fall{display:flex;flex-direction:column}
.bar-row{
  display:grid;grid-template-columns:9.5rem 1fr 6.5rem;align-items:center;
  gap:.75rem;padding:.45rem 0;border-bottom:1px solid var(--rule-2);
}
.bar-row .lbl{font-size:.8125rem;color:var(--ink-2);line-height:1.25}
.bar-row .lbl small{color:var(--ink-3);font-size:.9em}
.bar-track{position:relative;height:1.5rem}
/* Bars paint the full track and are revealed by clip-path: no frame touches
   layout, and engraved hatching keeps a fixed pitch instead of stretching.
   Never animate width or left. */
.bar{
  position:absolute;inset:0;clip-path:inset(0 100% 0 0);
  transition:clip-path .14s var(--ease);
}
.bar-prussian{background:var(--prussian)}
.bar-vermillion{background:var(--vermillion)}
.bar-ochre{background:var(--ochre)}
.bar-olive{background:var(--olive)}
.bar-hatch{background:repeating-linear-gradient(-45deg,var(--ochre) 0 4px,#d9a03a 4px 8px)}
.bar-hatch-olive{background:repeating-linear-gradient(-45deg,var(--olive) 0 4px,#6d7d3f 4px 8px)}
.ghost{
  position:absolute;top:-2px;height:calc(100% + 4px);
  border:1px dashed var(--rule);opacity:0;transition:opacity .14s linear;
}
.ghost.on{opacity:1}
.bar-row .val{font-size:.9375rem;text-align:right;font-weight:560}
.bar-row.total{border-bottom:2px solid var(--ink);border-top:1.5px solid var(--ink);margin-top:.35rem}
.bar-row.total .lbl,.bar-row.total .val{font-weight:680;color:var(--ink)}

/* ranked comparison table */
.ranked{width:100%;border-collapse:collapse;font-size:.875rem}
.ranked th{
  text-align:right;font-size:.6875rem;letter-spacing:.14em;text-transform:uppercase;
  font-weight:600;color:var(--ink-2);padding:.35rem .5rem;border-bottom:1.5px solid var(--ink);
}
.ranked th:first-child,.ranked td:first-child{text-align:left}
.ranked td{padding:.45rem .5rem;border-bottom:1px solid var(--rule-2);text-align:right}
.ranked tr.win td{background:var(--paper);font-weight:640}
.ranked tr.win td:first-child::after{content:" ← best";color:var(--vermillion-ink);font-weight:600;font-size:.8125rem}
.ranked caption{caption-side:bottom;text-align:left;font-size:.75rem;color:var(--ink-3);padding-top:.5rem}

/* gauges */
.gauge{margin-bottom:.6rem}
.gauge-head{display:flex;justify-content:space-between;align-items:baseline;gap:.5rem;font-size:.8125rem}
.gauge-track{position:relative;height:1.25rem;background:var(--paper);border:1px solid var(--rule);margin-top:.2rem}
.gauge-fill{position:absolute;inset:0;clip-path:inset(0 100% 0 0);transition:clip-path .14s var(--ease)}
.gauge-limit{position:absolute;top:-3px;bottom:-3px;width:2px;background:var(--ink)}
.state-ok{color:var(--olive-ink)}
.state-warn{color:var(--ochre-ink)}
.state-over{color:var(--vermillion-ink)}
.gauge-fill.state-ok{background:var(--olive)}
.gauge-fill.state-warn{background:var(--ochre)}
.gauge-fill.state-over{background:var(--vermillion)}

/* verdict */
.verdict{
  display:grid;grid-template-columns:1fr 13rem;gap:1.5rem;align-items:start;
  margin-top:1.25rem;padding-top:1rem;border-top:2px solid var(--ink);
}
.verdict.solo{grid-template-columns:1fr}
.verdict p{font-size:1.0625rem;line-height:1.45;max-width:52ch}
.verdict strong{color:var(--vermillion-ink);font-weight:680}
.inset{border:1px solid var(--ink);padding:.6rem .7rem;background:var(--paper)}
.inset .big{font-size:2rem;line-height:1;font-weight:680;letter-spacing:-.03em}
.inset .big.warn{color:var(--vermillion-ink)}
.inset p{font-size:.75rem;color:var(--ink-2);margin-top:.3rem;line-height:1.35}

.note{font-size:.8125rem;color:var(--ink-2);margin-top:.9rem;max-width:64ch}
.note b{color:var(--ink);font-weight:600}
.strip{
  margin-top:1.25rem;border-top:1px solid var(--rule);padding-top:.9rem;
  display:flex;justify-content:space-between;align-items:baseline;gap:1rem;flex-wrap:wrap;
}
.strip .amt{font-size:1.25rem;font-weight:680;color:var(--vermillion-ink)}

/* sensitivity: what would change this most */
.sens{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:1rem}
.sens .btn{font-size:.75rem}

/* timeline (sourdough, sequences) */
.timeline{list-style:none;border-left:2px solid var(--ink);margin-left:.35rem}
.timeline li{position:relative;padding:.5rem 0 .5rem 1.1rem;border-bottom:1px solid var(--rule-2)}
.timeline li::before{
  content:"";position:absolute;left:-5px;top:1rem;width:8px;height:8px;background:var(--ink);
}
.timeline li:last-child{border-bottom:0}
.timeline .t{font-weight:680;font-size:.9375rem}
.timeline .what{color:var(--ink-2);font-size:.875rem}

/* matrix (compatibility) */
.matrix{border-collapse:collapse;font-size:.8125rem}
.matrix th,.matrix td{border:1px solid var(--rule-2);padding:.3rem .4rem;text-align:center}
.matrix th{background:var(--paper);font-weight:600}
.matrix th.rowhead{text-align:left;font-weight:500}
.matrix .yes{color:var(--olive-ink)}
.matrix .warn{color:var(--ochre-ink)}
.matrix .no{color:var(--vermillion-ink);font-weight:680}

/* ── ad slot: fixed height, reserved, never above the tool ── */
.slot{
  margin:2rem 0;border:1px dashed var(--rule);min-height:280px;
  display:flex;align-items:center;justify-content:center;color:var(--ink-3);
}
@media (min-width:60rem){.slot{min-height:250px}}

/* ── side rail ─────────────────────────────────────────────
   A 300px rail appears ONLY at ≥90rem (1440px), in space the
   sheet was never using. Below that it does not exist, so it
   can never compress the key or the plate — the tool always
   wins the width it needs. Height is reserved (600px half-page)
   so a late-loading ad cannot shift anything.
   Density: one rail unit plus the in-content slots keeps a tool
   page inside the Better Ads 30% ceiling. See LAUNCH.md 5.6. */
.rail{display:none}
@media (min-width:90rem){
  body{padding-right:21.25rem}
  .rail{
    display:block;position:fixed;top:5.5rem;right:1.5rem;
    width:300px;z-index:5;
  }
  .rail .slot{margin:0;min-height:600px}
}
@media print{.rail{display:none}}

/* ── content layer ────────────────────────────────────────── */
.content{border-top:2px solid var(--ink);padding:1.75rem 0 3rem;max-width:68ch}
.content h2{font-size:1.25rem;letter-spacing:-.012em;margin:1.75rem 0 .5rem;font-weight:640}
.content h2:first-child{margin-top:0}
.content h3{font-size:1rem;margin:1.25rem 0 .35rem;font-weight:640}
.content p{margin-bottom:.9rem}
.content ul,.content ol{margin:0 0 .9rem 1.1rem}
.content li{margin-bottom:.35rem}
.content a{color:var(--ink);text-decoration:underline;text-underline-offset:2px;text-decoration-color:var(--rule)}
.content a:hover{color:var(--vermillion-ink);text-decoration-color:var(--vermillion-ink)}
.content cite{display:block;font-size:.8125rem;color:var(--ink-2);font-style:normal;margin-top:.75rem;
  border-top:1px solid var(--rule-2);padding-top:.75rem}
.content .worked{border:1px solid var(--rule);background:var(--paper-2);padding:.9rem 1rem;margin-bottom:.9rem}
.content .worked p:last-child{margin-bottom:0}
details{border-bottom:1px solid var(--rule-2);padding:.6rem 0}
details summary{cursor:pointer;font-weight:600;font-size:.9375rem}
details summary::marker{color:var(--rule)}
details p{margin:.5rem 0 0}

/* related tools */
.related{border-top:1px solid var(--rule);padding:1.5rem 0}
.related ul{list-style:none;display:grid;gap:.5rem;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr));margin-top:.75rem}
.related a{
  display:block;border:1px solid var(--rule);padding:.6rem .7rem;
  text-decoration:none;color:var(--ink);background:var(--paper-2);
}
.related a:hover{border-color:var(--ink);background:var(--paper)}
.related a b{display:block;font-weight:640;margin-bottom:.15rem}
.related a span{font-size:.8125rem;color:var(--ink-2)}

/* footer */
.foot{border-top:2px solid var(--ink);padding:1.25rem 0 2.5rem;font-size:.8125rem;color:var(--ink-2)}
.foot nav{display:flex;gap:1.25rem;flex-wrap:wrap;margin-bottom:.6rem}
.foot a{color:var(--ink-2)}
.foot p{max-width:68ch}

/* index / tool listing */
.tools{list-style:none;display:grid;gap:0;margin-top:1.5rem;border-top:1px solid var(--rule)}
.tools li{border-bottom:1px solid var(--rule-2)}
.tools a{display:grid;grid-template-columns:1fr auto;gap:1rem;align-items:baseline;
  padding:.9rem 0;text-decoration:none;color:var(--ink)}
.tools a:hover{background:var(--paper-2)}
.tools b{font-size:1.0625rem;font-weight:640}
.tools span{display:block;color:var(--ink-2);font-size:.875rem;margin-top:.15rem;max-width:56ch}
.tools em{font-style:normal;color:var(--vermillion-ink);font-size:.8125rem}

/* ── mobile: result promotes to a pinned bar ──────────────── */
.pinned{display:none}
@media (max-width:60rem){
  .sheet{grid-template-columns:1fr}
  .key{border-right:0;padding:1.25rem 0 1.5rem}
  .plate-col{padding:0 0 6.5rem}
  .bar-row{grid-template-columns:7.5rem 1fr 5.5rem;gap:.5rem}
  .verdict{grid-template-columns:1fr}
  .plate{padding:1rem .9rem .9rem}
  .pinned{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:10;
    justify-content:space-between;align-items:center;gap:1rem;
    background:var(--prussian);color:var(--paper);
    padding:.7rem 1.25rem calc(.7rem + env(safe-area-inset-bottom));
    border-top:2px solid var(--ink);
  }
  .pinned .legend{color:#b9c6d3}
  .pinned .amt{font-size:1.5rem;font-weight:680;letter-spacing:-.02em}
  .ranked{font-size:.8125rem}
  .ranked th,.ranked td{padding:.35rem .3rem}
}
@media (max-width:26rem){
  .bar-row{grid-template-columns:6.5rem 1fr 5rem}
  .row{grid-template-columns:1fr 6.5rem}
}

/* wide content that must scroll rather than break the page */
.scroll-x{overflow-x:auto;-webkit-overflow-scrolling:touch}

.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-9999px}
.skip:focus{left:1rem;top:.5rem;z-index:20;background:var(--paper);padding:.5rem .75rem;border:2px solid var(--ink)}
@media print{.slot,.masthead nav,.pinned,.sens{display:none}.plate{break-inside:avoid}}