/* ============================================================================
   Calculator styles (on-site). Keyed to the real site design tokens in site.css
   — no standalone fallbacks (those were only for the artifact previews). The one
   exception is --accent-soft, which the site does NOT flip in dark mode, so the
   calculator re-defines its own soft tint for dark. See docs/ARCHITECTURE.md.
   ============================================================================ */

/* ---- ERP estimator (.ia-erp) ---- */
.ia-erp{
  --iae-surface:var(--surface);
  --iae-surface-2:var(--surface-2);
  --iae-border:var(--border);
  --iae-border-strong:var(--border-strong);
  --iae-text:var(--text);
  --iae-muted:var(--muted);
  --iae-accent:var(--accent);
  --iae-accent-ink:var(--accent-ink);
  --iae-accent-soft:var(--accent-soft);
  --iae-panel:var(--panel);
  --iae-good:var(--good);
  --iae-warn:var(--warn);
  --iae-shadow:var(--shadow);
  --iae-shadow-lg:var(--shadow-lg);
  --iae-a:var(--accent-ink);
  --iae-b:#2563eb;
  --iae-c:var(--good);
  --iae-flat:var(--warn);
  font-family:var(--body);
  color:var(--iae-text);line-height:1.5;
  max-width:1180px;margin-inline:auto;padding-inline:20px;
}
/* --accent-soft does not flip in the site's dark theme: give the calculator a dark tint */
:root[data-theme="dark"] .ia-erp{ --iae-accent-soft:color-mix(in srgb,var(--accent) 20%,#10161e); }
/* In a prose `body`, break out of the 880px reading column up to the design width
   (same idea as .prose .whyblock). No transform, so the fixed toast stays viewport-fixed. */
.prose .ia-erp{--iae-w:min(100vw,1180px);width:var(--iae-w);
  margin-left:calc(50% - var(--iae-w)/2);margin-right:calc(50% - var(--iae-w)/2)}

.ia-erp *,.ia-erp *::before,.ia-erp *::after{box-sizing:border-box}
.ia-erp .hidden{display:none!important}
.ia-erp svg.ic{width:1em;height:1em;fill:none;stroke:currentColor;stroke-width:2;
  stroke-linecap:round;stroke-linejoin:round;vertical-align:-.12em;flex:none}

.ia-erp__intro{font-family:var(--display);font-size:clamp(1.4rem,3vw,2rem);font-weight:800;
  margin:0 0 18px;color:var(--iae-text)}

/* hero */
/* site-themed dark band: the panel token (as used by .why) warmed with a hint of the brand accent */
.ia-erp__hero{background:linear-gradient(135deg,var(--iae-panel),color-mix(in srgb,var(--iae-panel) 80%,var(--iae-accent)));
  color:#fff;border-radius:10px;padding:26px 28px;margin-bottom:22px}
.ia-erp__hero-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px}
.ia-erp__badge{display:inline-flex;align-items:center;gap:8px;font-size:.7rem;font-weight:700;
  letter-spacing:.1em;text-transform:uppercase;color:var(--iae-accent);
  background:color-mix(in srgb,var(--iae-accent) 16%,transparent);
  border:1px solid color-mix(in srgb,var(--iae-accent) 40%,transparent);padding:5px 12px;border-radius:999px}
.ia-erp__h1{font-family:var(--display);font-size:clamp(1.5rem,3.2vw,2.1rem);font-weight:800;
  line-height:1.12;margin:12px 0 0;max-width:22ch}
.ia-erp__presets{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:10px;padding:16px;min-width:230px}
.ia-erp__presets-k{font-size:.66rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  color:rgba(255,255,255,.6);margin-bottom:10px;text-align:center}
.ia-erp__preset{width:100%;display:flex;align-items:center;justify-content:center;gap:8px;
  font:inherit;font-size:.8rem;font-weight:700;color:#fff;cursor:pointer;background:var(--iae-accent);
  border:1px solid color-mix(in srgb,var(--iae-accent) 70%,#fff);padding:10px 14px;border-radius:10px;
  margin-bottom:8px;transition:background .15s ease}
.ia-erp__preset:last-child{margin-bottom:0}
.ia-erp__preset:hover{background:var(--iae-accent-ink)}

/* config panel */
.ia-erp__panel{background:var(--iae-surface);border:1px solid var(--iae-border);border-radius:10px;
  box-shadow:var(--iae-shadow);padding:22px;margin-bottom:24px}
.ia-erp__config{display:grid;grid-template-columns:5fr 4fr 3fr;gap:18px}
.ia-erp__field{background:var(--iae-surface-2);border:1px solid var(--iae-border);border-radius:10px;padding:16px}
.ia-erp__field-top{display:flex;justify-content:space-between;align-items:center;gap:8px;
  font-size:.68rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--iae-text)}
.ia-erp__chip{font-size:.68rem;font-weight:800;color:var(--iae-accent-ink);background:var(--iae-surface);
  border:1px solid color-mix(in srgb,var(--iae-accent) 35%,transparent);padding:3px 9px;border-radius:7px;white-space:nowrap}
.ia-erp__chip--plain{color:var(--iae-muted);border-color:var(--iae-border)}
.ia-erp__inrow{display:flex;align-items:center;gap:10px;margin-top:12px}
.ia-erp__num{width:100%;text-align:center;font-family:var(--display);font-size:1.6rem;font-weight:800;
  color:var(--iae-text);background:var(--iae-surface);border:2px solid var(--iae-border-strong);
  border-radius:10px;padding:8px 10px}
.ia-erp__num:focus{outline:none;border-color:var(--iae-accent)}
.ia-erp__num--money{padding-left:30px}
.ia-erp__money-wrap{position:relative;flex:1}
.ia-erp__money-wrap .ia-erp__dollar{position:absolute;left:11px;top:50%;transform:translateY(-50%);
  font-weight:700;font-size:1.1rem;color:var(--iae-muted)}
.ia-erp__steppers{display:flex;flex-direction:column;gap:6px}
.ia-erp__step{width:38px;height:26px;display:flex;align-items:center;justify-content:center;
  background:var(--iae-panel);color:#fff;border:none;border-radius:8px;cursor:pointer;font-size:.8rem;transition:opacity .15s ease}
.ia-erp__step:hover{opacity:.82}
.ia-erp__auto{display:inline-flex;align-items:center;gap:6px;font:inherit;font-size:.74rem;font-weight:700;
  white-space:nowrap;color:var(--iae-text);background:var(--iae-surface);cursor:pointer;
  border:1px solid var(--iae-border-strong);border-radius:10px;padding:10px 12px}
.ia-erp__auto:hover{background:var(--iae-surface-2)}
.ia-erp__hint{font-size:.7rem;color:var(--iae-muted);margin:10px 0 0}

/* main grid */
.ia-erp__main{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start}
.ia-erp__col{display:flex;flex-direction:column;gap:18px;min-width:0}

/* base package header */
.ia-erp__base{background:var(--iae-panel);color:#fff;border-radius:10px;padding:18px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:14px}
.ia-erp__base-l{display:flex;align-items:center;gap:14px;min-width:0}
.ia-erp__base-ic{width:42px;height:42px;flex:none;border-radius:10px;background:var(--iae-accent);
  display:grid;place-items:center;font-size:1.2rem;color:#fff}
.ia-erp__base h2{font-family:var(--display);font-size:1rem;font-weight:700;margin:0}
.ia-erp__base p{font-size:.76rem;color:rgba(255,255,255,.7);margin:2px 0 0}
.ia-erp__base-k{font-size:.64rem;text-transform:uppercase;letter-spacing:.08em;color:rgba(255,255,255,.6);text-align:right}
.ia-erp__base-v{font-family:var(--display);font-size:1.15rem;font-weight:800;color:var(--iae-accent);text-align:right}
.ia-erp__per{font-size:.72rem;font-weight:400;color:rgba(255,255,255,.7)}

.ia-erp__modhead-row{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.ia-erp__modhead-row h3{font-family:var(--display);font-size:1rem;font-weight:700;
  display:inline-flex;align-items:center;gap:8px;margin:0;color:var(--iae-text)}
.ia-erp__modhead-row h3 .ic{color:var(--iae-accent-ink)}
.ia-erp__modhead-note{font-size:.72rem;color:var(--iae-muted)}

/* module panels */
.ia-erp__modpanel{background:var(--iae-surface);border:1px solid var(--iae-border);border-radius:10px;
  overflow:hidden;box-shadow:var(--iae-shadow)}
.ia-erp__modpanel-head{background:var(--iae-surface-2);border-bottom:1px solid var(--iae-border);
  padding:11px 16px;display:flex;align-items:center;justify-content:space-between;gap:10px}
.ia-erp__modpanel-head b{font-size:.7rem;font-weight:800;text-transform:uppercase;letter-spacing:.1em;color:var(--iae-text)}
.ia-erp__modpanel-head span{font-size:.7rem;color:var(--iae-muted)}
.ia-erp__mods{padding:10px}
.ia-erp__mod{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 10px;
  border-radius:10px;transition:background .12s ease}
.ia-erp__mod:hover{background:var(--iae-surface-2)}
.ia-erp__mod--child{border-left:2px solid var(--iae-border-strong)}
.ia-erp__mod-label{display:flex;align-items:center;gap:11px;cursor:pointer;flex:1;min-width:0}
.ia-erp__chk{width:17px;height:17px;flex:none;accent-color:var(--iae-accent);cursor:pointer}
.ia-erp__mod-name{font-size:.82rem;font-weight:600;color:var(--iae-text)}
.ia-erp__mod-right{display:flex;align-items:center;gap:10px;flex:none}
.ia-erp__mod-rate{font-size:.74rem;font-weight:700;color:var(--iae-muted);white-space:nowrap}
.ia-erp__tag{font-size:.6rem;font-weight:800;padding:2px 7px;border-radius:6px;white-space:nowrap;border:1px solid currentColor}
.ia-erp__tag--a{color:var(--iae-a);background:color-mix(in srgb,var(--iae-a) 12%,transparent)}
.ia-erp__tag--b{color:var(--iae-b);background:color-mix(in srgb,var(--iae-b) 12%,transparent)}
.ia-erp__tag--c{color:var(--iae-c);background:color-mix(in srgb,var(--iae-c) 12%,transparent)}
.ia-erp__tag--flat{color:var(--iae-flat);background:color-mix(in srgb,var(--iae-flat) 14%,transparent)}

/* summary */
.ia-erp__summary{background:var(--iae-surface);border:2px solid var(--iae-panel);border-radius:10px;
  overflow:hidden;box-shadow:var(--iae-shadow-lg);position:sticky;top:84px}
.ia-erp__sum-head{background:var(--iae-panel);color:#fff;padding:18px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:10px}
.ia-erp__sum-eyebrow{font-size:.62rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--iae-accent)}
.ia-erp__sum-head h3{font-family:var(--display);font-size:1.1rem;font-weight:800;margin:3px 0 0}
.ia-erp__gst{font-size:.68rem;font-weight:600;color:rgba(255,255,255,.75);background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.18);padding:4px 9px;border-radius:7px;white-space:nowrap}
.ia-erp__sum-body{padding:20px;display:flex;flex-direction:column;gap:16px}
.ia-erp__userbar{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:.76rem;
  background:var(--iae-surface-2);border:1px solid var(--iae-border);border-radius:10px;padding:11px 13px}
.ia-erp__userbar b{color:var(--iae-text)}
.ia-erp__userbar .hl{color:var(--iae-accent-ink);font-weight:800}
.ia-erp__userbar .mut{color:var(--iae-muted);font-weight:600}
.ia-erp__block{display:flex;flex-direction:column;gap:6px;border-bottom:1px solid var(--iae-border);padding-bottom:14px}
.ia-erp__row{display:flex;justify-content:space-between;gap:12px;font-size:.88rem;font-weight:700;color:var(--iae-text)}
.ia-erp__sub{font-size:.74rem;color:var(--iae-muted);display:flex;justify-content:space-between}
.ia-erp__sumlines{display:flex;flex-direction:column;gap:5px;padding-top:4px}
.ia-erp__sumline{display:flex;justify-content:space-between;gap:10px;font-size:.74rem;color:var(--iae-muted);
  border-left:2px solid var(--iae-accent);padding:2px 0 2px 10px}
.ia-erp__sumline-cls{font-size:.64rem;font-weight:700;color:var(--iae-muted)}
.ia-erp__sumline-val{font-weight:700;color:var(--iae-text);white-space:nowrap}
.ia-erp__row--total{font-size:1rem;font-weight:800;border-top:1px solid var(--iae-border);padding-top:8px}
.ia-erp__row--total .ia-erp__hl{color:var(--iae-accent-ink)}
.ia-erp__peruser{font-size:.7rem;color:var(--iae-muted);text-align:right}
.ia-erp__peruser b{color:var(--iae-text)}
.ia-erp__grand{background:var(--iae-panel);color:#fff;border-radius:10px;padding:16px;display:flex;flex-direction:column;gap:3px}
.ia-erp__grand-top{display:flex;justify-content:space-between;align-items:center;font-size:.68rem;font-weight:700;
  letter-spacing:.08em;text-transform:uppercase;color:rgba(255,255,255,.7)}
.ia-erp__grand-num{font-family:var(--display);font-size:2rem;font-weight:800;color:var(--iae-accent)}
.ia-erp__grand-eq{font-size:.68rem;color:rgba(255,255,255,.7)}
.ia-erp__sum-foot{background:var(--iae-surface-2);border-top:1px solid var(--iae-border);padding:16px 20px;
  display:flex;flex-direction:column;gap:8px}
/* scoped under .ia-erp so it beats the site's `.prose a` link colour + underline */
.ia-erp .ia-erp__cta{width:100%;display:flex;align-items:center;justify-content:center;gap:8px;font:inherit;
  font-weight:700;color:#fff;cursor:pointer;background:var(--iae-accent);border:none;border-radius:10px;
  padding:12px;transition:background .15s ease;text-decoration:none}
.ia-erp .ia-erp__cta:hover,.ia-erp .ia-erp__cta:focus{background:var(--iae-accent-ink);color:#fff;text-decoration:none}
.ia-erp__print{font:inherit;font-size:.78rem;font-weight:600;color:var(--iae-muted);background:none;border:none;
  cursor:pointer;text-decoration:underline;align-self:center}
.ia-erp__disclaimer{font-size:.66rem;color:var(--iae-muted);text-align:center}
.ia-erp__infoic{color:var(--iae-muted);cursor:help}

/* reference matrix */
.ia-erp__matrix{margin-top:28px;background:var(--iae-surface);border:1px solid var(--iae-border);
  border-radius:10px;box-shadow:var(--iae-shadow);padding:22px}
.ia-erp__matrix-head{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;margin-bottom:14px}
.ia-erp__matrix-head h3{font-family:var(--display);font-size:1rem;font-weight:700;margin:0;color:var(--iae-text)}
.ia-erp__matrix-head p{font-size:.74rem;color:var(--iae-muted);margin:3px 0 0}
.ia-erp__matrix-tag{font-size:.7rem;font-weight:700;color:var(--iae-text);background:var(--iae-surface-2);
  border:1px solid var(--iae-border);padding:5px 11px;border-radius:9px;align-self:flex-start;white-space:nowrap}
.ia-erp__table-scroll{overflow-x:auto}
.ia-erp__table{width:100%;border-collapse:collapse;font-size:.78rem;min-width:520px}
.ia-erp__table th{background:var(--iae-panel);color:#fff;text-align:left;font-weight:700;
  text-transform:uppercase;letter-spacing:.04em;font-size:.68rem;padding:10px 12px}
.ia-erp__table th:first-child{border-top-left-radius:10px}
.ia-erp__table th:last-child{border-top-right-radius:10px}
.ia-erp__mrow{color:var(--iae-text)}
.ia-erp__mrow td{padding:10px 12px;border-bottom:1px solid var(--iae-border)}
.ia-erp__mrow:hover{background:var(--iae-surface-2)}
.ia-erp__mrow td:first-child{font-weight:800}
/* active row: a clear accent tint on the cells (beats the grey hover), with a
   solid left bar. color-mix with --surface adapts to light and dark automatically. */
.ia-erp__mrow--active td,.ia-erp__mrow--active:hover td{
  background:color-mix(in srgb,var(--iae-accent) 16%,var(--iae-surface))}
.ia-erp__mrow--active td:first-child{box-shadow:inset 3px 0 0 var(--iae-accent)}

/* toast */
.ia-erp__toast{position:fixed;bottom:20px;right:20px;z-index:60;display:flex;align-items:center;gap:10px;
  background:var(--iae-panel);color:#fff;padding:13px 18px;border-radius:12px;box-shadow:var(--iae-shadow-lg);
  border:1px solid var(--iae-border-strong)}
.ia-erp__toast .ic{color:var(--iae-accent);font-size:1.1rem}
.ia-erp__toast span{font-size:.78rem;font-weight:600}

@media (max-width:980px){ .ia-erp__main{grid-template-columns:1fr} .ia-erp__summary{position:static} }
@media (max-width:760px){ .ia-erp__config{grid-template-columns:1fr} }