/* ==========================================================================
   APPS / DIGITAL PRODUCTS DESIGN SYSTEM
   Load AFTER assets/site.css on every tools.html-linked page; the token bridge
   below maps the old token names onto site.css. Brand
   tokens (color, type, radius) are not redefined here — this file
   only adds what an interactive tool needs on top of the marketing site:
   semantic status colors, form validation states, a result/readout
   component, hazard-severity badges, alerts, a data table, a disclosure,
   a copy button, and print rules.

   Reference/living style guide: design-system.html (not linked from nav —
   internal doc, same convention as admin.html/mockups/).
   ========================================================================== */

:root{
  /* bridge: this file was written against the pre-redesign token names; map them onto
     site.css so tool pages need no per-page bridge */
  --font-mono:var(--mono);--font-body:var(--sans);--text:var(--ink);--text-muted:var(--ink-2);--text-dim:var(--ink-3);
  --accent-orange:var(--acc);--accent-amber:#8A6508;--line:var(--rule-2);--line-soft:var(--rule);
  --fs-micro:11px;--fs-ui:14px;--fs-subhead:19px;--radius-sm:2px;--radius-lg:4px;--brand:var(--acc);
  --bg:var(--panel);--bg-panel:var(--panel);

  /* semantic status */
  --status-success:#2E6A4E;--status-success-bg:#E6F0EA;
  --status-caution:#8A6508;--status-caution-bg:#F5EEDB;
  --status-danger:#A3261B;--status-danger-bg:#F6E3E0;
  --status-info:#3B5569;--status-info-bg:#E5EBF0;

  /* hazard severity scale, arc flash PPE category 0-4, low to high: amber -> orange -> red,
     the way a real label's WARNING/DANGER bands escalate */
  --haz-0:#2E6A4E;--haz-1:#8A6508;--haz-2:#A5580A;--haz-3:#8A2F14;--haz-4:#A3261B;
}

/* ---------- TOOL PAGE SHELL ---------- */
.tool-back{
  display:inline-flex;align-items:center;gap:8px;text-decoration:none;
  font-family:var(--font-mono);font-size:var(--fs-micro);letter-spacing:0.12em;
  text-transform:uppercase;color:var(--text-dim);
}
.tool-back:hover{color:var(--accent-orange);}
.tool-hero{padding:28px 0 8px;}
.tool-hero .eyebrow{margin-bottom:14px;}
.tool-hero h1{font-size:var(--fs-h1);}
.tool-hero p.lede{margin-top:16px;font-size:var(--fs-body);line-height:1.7;color:var(--text-muted);max-width:620px;text-wrap:pretty;}

/* two-panel layout: inputs left, live result right. Stacks on mobile.
   Same shape as the old .goal layout but tuned narrower for a form+readout
   pair instead of a wide prose+panel pair. */
.tool-grid{display:grid;grid-template-columns:1fr;gap:28px;align-items:start;}
@media(min-width:820px){.tool-grid{grid-template-columns:1fr 1fr;}}
.tool-grid.narrow-result{grid-template-columns:1fr;}
@media(min-width:820px){.tool-grid.narrow-result{grid-template-columns:1.3fr 1fr;}}

/* ---------- FORM EXTENSIONS ---------- */
.field-hint{margin-top:6px;font-size:var(--fs-small);color:var(--text-dim);line-height:1.5;}
.field-error{margin-top:6px;font-size:var(--fs-small);color:var(--status-danger);line-height:1.5;display:none;}
.field.is-invalid input,.field.is-invalid select{border-color:var(--status-danger);}
.field.is-invalid .field-error{display:block;}
.field-error:not([hidden]){display:block;}
.tool-page .field input,.tool-page .field select,.tool-page .field textarea{border-color:#858A87}
#calc-form .calc-unit-field{border-color:#858A87}
.tool-page .opts label::before{border-color:#858A87}
.tool-page .field input:focus-visible,.tool-page .field select:focus-visible,.tool-page .field textarea:focus-visible{outline:2px solid var(--acc);outline-offset:2px;box-shadow:none}
.tool-page .field.is-invalid input,.tool-page .field.is-invalid select{border-color:var(--status-danger);background:var(--status-danger-bg);box-shadow:inset 3px 0 0 var(--status-danger)}
.tool-page [id=hdr].is-invalid{border-color:var(--status-danger);box-shadow:0 0 0 2px var(--status-danger)}
.tool-page #storage-msg:empty{display:none}
.tool-page #storage-msg:not(:empty){color:var(--status-danger)}
.tool-page .tool-seg:focus-within{outline:2px solid var(--acc);outline-offset:3px}
.tool-page .tool-seg button:focus-visible{outline:2px solid currentColor;outline-offset:-4px}
.tool-page .tool-list-wrap:focus-visible{outline:2px solid var(--acc);outline-offset:3px}
.tool-page .row-actions button,.tool-page .row-actions a{min-height:32px;display:inline-flex;align-items:center}
.tool-page [id=result-panel]{scroll-margin-top:90px}
@media(prefers-reduced-motion:reduce){.tool-page *{scroll-behavior:auto!important;transition:none!important}}

.field-suffix{position:relative;}
.field-suffix input{padding-right:52px;}
.field-suffix span{
  position:absolute;right:12px;top:50%;transform:translateY(-50%);
  font-family:var(--font-mono);font-size:var(--fs-small);color:var(--text-dim);
  pointer-events:none;
}

/* segmented toggle — unit switches (V/kV, in/ft), method switches, etc. */
.tool-seg{display:inline-flex;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;}
.tool-seg button{
  font-family:var(--font-mono);font-size:var(--fs-small);letter-spacing:0.02em;
  padding:9px 16px;border:none;background:var(--bg);color:var(--text-muted);
  cursor:pointer;transition:background .16s ease,color .16s ease;
}
.tool-seg button + button{border-left:1px solid var(--line);}
.tool-seg button:hover{color:var(--text);}
.tool-seg button[aria-pressed="true"]{background:var(--accent-orange);color:#FDFAF4;}

/* ---------- RESULT / READOUT ---------- */
.tool-result{
  background:var(--bg-panel);border:1px solid rgba(30,34,42,0.10);border-radius:var(--radius-lg);
  padding:26px 28px;box-shadow:0 1px 2px rgba(32,36,44,0.05),0 10px 30px rgba(32,36,44,0.07);
}
.tool-result-empty{color:var(--text-dim);font-size:var(--fs-ui);line-height:1.6;}
.tool-readout{margin-bottom:20px;}
.tool-readout:last-child{margin-bottom:0;}
.tool-readout-label{
  font-family:var(--font-mono);font-size:var(--fs-micro);letter-spacing:0.1em;
  text-transform:uppercase;color:var(--text-dim);margin-bottom:6px;
}
.tool-readout-value{
  font-family:var(--font-mono);font-weight:500;font-size:32px;line-height:1.1;color:var(--text);
  display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;
}
.tool-readout-value .unit{font-size:var(--fs-subhead);color:var(--text-dim);font-weight:400;}
.tool-readout-note{margin-top:6px;font-size:var(--fs-small);color:var(--text-muted);line-height:1.6;}

/* severity coloring — apply alongside .tool-readout-value or .tool-badge */
.is-safe .tool-readout-value{color:var(--haz-0);}
.is-caution .tool-readout-value{color:var(--haz-2);}
.is-danger .tool-readout-value{color:var(--haz-4);}

/* ---------- HAZARD / CATEGORY BADGE ---------- */
.tool-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:var(--fs-small);font-weight:500;letter-spacing:0.02em;
  padding:8px 16px;border-radius:999px;
  background:var(--status-info-bg);color:var(--status-info);
}
.tool-badge .dot{width:8px;height:8px;border-radius:50%;background:currentColor;flex-shrink:0;}
.tool-badge.haz-0{background:var(--status-success-bg);color:var(--haz-0);}
.tool-badge.haz-1{background:rgba(149,105,10,0.12);color:var(--haz-1);}
.tool-badge.haz-2{background:rgba(181,121,12,0.12);color:var(--haz-2);}
.tool-badge.haz-3{background:rgba(194,74,16,0.12);color:var(--haz-3);}
.tool-badge.haz-4{background:var(--status-danger-bg);color:var(--haz-4);}

/* ---------- ALERT / NOTICE ---------- */
.tool-alert{
  display:flex;gap:12px;padding:14px 16px;border-radius:var(--radius-sm);
  border:1px solid transparent;font-size:var(--fs-ui);line-height:1.6;color:var(--text-muted);
}
.tool-alert strong{display:block;color:var(--text);font-weight:600;margin-bottom:2px;}
.tool-alert .dot{width:8px;height:8px;border-radius:50%;margin-top:7px;flex-shrink:0;background:currentColor;}
.tool-alert.info{background:var(--status-info-bg);color:var(--text-muted);}
.tool-alert.success{background:var(--status-success-bg);color:var(--status-success);}
.tool-alert.success strong{color:var(--status-success);}
.tool-alert.caution{background:var(--status-caution-bg);color:var(--status-caution);border-color:rgba(149,105,10,0.25);}
.tool-alert.caution strong{color:var(--status-caution);}
.tool-alert.danger{background:var(--status-danger-bg);color:var(--status-danger);border-color:rgba(163,46,28,0.25);}
.tool-alert.danger strong{color:var(--status-danger);}
.tool-alert p{margin:0;}

/* ---------- DISCLOSURE ("how this works") ---------- */
.tool-disclosure{border:1px solid var(--line-soft);border-radius:var(--radius-sm);overflow:hidden;}
.tool-disclosure + .tool-disclosure{margin-top:10px;}
.tool-disclosure summary{
  cursor:pointer;list-style:none;padding:14px 16px;
  font-family:var(--font-body);font-weight:600;font-size:var(--fs-ui);color:var(--text);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.tool-disclosure summary::-webkit-details-marker{display:none;}
.tool-disclosure summary::after{
  content:"+";font-family:var(--font-mono);font-size:16px;color:var(--text-dim);flex-shrink:0;
  transition:transform .16s ease;
}
.tool-disclosure[open] summary::after{transform:rotate(45deg);}
.tool-disclosure summary:hover{color:var(--accent-orange);}
.tool-disclosure-body{padding:0 16px 16px;font-size:var(--fs-ui);color:var(--text-muted);line-height:1.7;}
.tool-disclosure-body p + p{margin-top:10px;}

/* ---------- TABLE ---------- */
.tool-table{width:100%;border-collapse:collapse;font-size:var(--fs-ui);}
.tool-table th{
  text-align:left;font-family:var(--font-mono);font-size:var(--fs-micro);letter-spacing:0.08em;
  text-transform:uppercase;color:var(--text-dim);font-weight:500;
  padding:0 12px 8px;border-bottom:1px solid var(--line);
}
.tool-table td{padding:11px 12px;border-bottom:1px solid var(--line-soft);color:var(--text-muted);}
.tool-table tr:last-child td{border-bottom:none;}
.tool-table td.mono{font-family:var(--font-mono);font-size:var(--fs-small);color:var(--text);}
.tool-table td.strong{color:var(--text);font-weight:600;}

/* ---------- COPY BUTTON ---------- */
.tool-copy{
  display:inline-flex;align-items:center;gap:7px;
  font-family:var(--font-mono);font-size:var(--fs-micro);letter-spacing:0.06em;text-transform:uppercase;
  padding:7px 12px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:transparent;color:var(--text-muted);cursor:pointer;
  transition:border-color .16s ease,color .16s ease;
}
.tool-copy:hover{border-color:var(--accent-orange);color:var(--accent-orange);}
.tool-copy svg{width:13px;height:13px;flex-shrink:0;}
.tool-copy.copied{border-color:var(--status-success);color:var(--status-success);}

/* ---------- DISCLAIMER ----------
   Every calculator/decoder on the Apps page carries one of these near the
   result — Heirarc is a licensed PE practice, so a free reference tool must
   never read as a substitute for a stamped study. Not optional per-page
   decoration; include it on every tool. */
.tool-disclaimer{
  margin-top:32px;padding-top:20px;border-top:1px solid rgba(30,34,42,0.09);
  font-family:var(--font-mono);font-size:var(--fs-micro);color:var(--text-dim);line-height:1.7;
  max-width:640px;
}

/* ---------- PRINT ----------
   For any tool whose result is meant to be printed/saved (a decoded label
   explanation, a generated label itself). Hide site chrome and inputs,
   keep only .tool-print-area. */
@media print{
  header,footer,.tool-back,.tool-hero,.tool-print-hide{display:none !important;}
  main.folder{padding:0 !important;}
  .sheet{box-shadow:none !important;border-radius:0 !important;}
  body::before{display:none !important;}
  .tool-grid{display:block !important;}
}

/* ---------- MOBILE ---------- */
@media(max-width:559px){
  .tool-result{padding:20px 18px;}
  .tool-readout-value{font-size:26px;}
}

/* ==========================================================================
   APP SHELL (2026-10): every app is a standalone page with its own app bar,
   an app menu and a Ctrl/Cmd-K quick switcher, all built by assets/apps.js
   from one registry.
   ========================================================================== */
.app-bar{position:sticky;top:var(--header-h);z-index:20;background:rgba(246,246,244,.92);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--rule)}
.app-bar .wrap{display:flex;align-items:center;gap:14px;min-height:52px}
.app-bar-menu{display:inline-flex;align-items:center;gap:8px;font:500 var(--fs-label)/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);padding:9px 10px;border:1px solid var(--rule-2);border-radius:var(--radius);background:var(--panel)}
.app-bar-menu:hover{border-color:var(--ink);color:var(--ink)}
.app-bar-menu svg{width:14px;height:14px}
.app-bar-name{font-weight:500;font-size:15px;letter-spacing:-.01em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.app-bar-kbd{margin-left:auto;font:500 var(--fs-label)/1 var(--mono);color:var(--ink-3);display:none}
@media(min-width:760px){.app-bar-kbd{display:inline}}
.kbd{display:inline-block;border:1px solid var(--rule-2);border-bottom-width:2px;border-radius:3px;padding:2px 5px;font:500 10px/1 var(--mono);color:var(--ink-2);background:var(--panel)}
.tag.draft{color:var(--warn);border-color:currentColor}

dialog.app-switch{width:min(560px,calc(100vw - 32px));margin:12vh auto auto}
.app-switch-in{padding:16px}
.app-switch input{width:100%;border:1px solid var(--rule-2);border-radius:var(--radius);padding:12px 14px;font-size:16px;background:var(--panel)}
.app-switch input:focus{outline:none;border-color:var(--ink)}
.app-switch ul{list-style:none;margin-top:10px;max-height:50vh;overflow:auto}
.app-switch li a{display:grid;grid-template-columns:1fr auto;gap:2px 12px;padding:12px;border-radius:var(--radius)}
.app-switch li a .d{grid-column:1;color:var(--ink-2);font-size:var(--fs-small)}
.app-switch li a .tag{grid-row:1;grid-column:2;align-self:start}
.app-switch li a[aria-selected="true"],.app-switch li a:hover{background:var(--acc-tint)}
.app-switch li a[aria-current="page"] .n::after{content:" \00b7  open";color:var(--ink-3);font-weight:400}
.app-switch .n{font-weight:500}
.app-switch-foot{display:flex;justify-content:space-between;gap:12px;padding:10px 16px;border-top:1px solid var(--rule);font-size:12px;color:var(--ink-3)}
.app-switch-foot a{color:var(--acc)}

.app-draft{font-size:var(--fs-small);color:var(--warn);border-left:2px solid var(--warn);padding:2px 0 2px 12px;max-width:62ch}

/* ---------- section heads inside a tool ---------- */
.tool-h{font:500 var(--fs-label)/1.3 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);padding-top:18px;border-top:1px solid var(--rule)}
.tool-h:first-child{border-top:0;padding-top:0}
.tool-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center}

/* ---------- checkbox list ---------- */
.checks{display:grid;gap:2px}
@media(min-width:560px){.checks.two{grid-template-columns:1fr 1fr;column-gap:20px}}
.checks label{display:flex;gap:10px;align-items:flex-start;padding:7px 0;font-size:var(--fs-small);color:var(--ink);cursor:pointer;line-height:1.45}
.checks input{width:16px;height:16px;margin-top:2px;flex-shrink:0;accent-color:var(--ink)}

/* ---------- findings list ---------- */
.findings{list-style:none;display:grid;gap:8px}
.findings li{display:block;padding:12px 14px;border-left:4px solid var(--rule-2);background:var(--sheet);font-size:var(--fs-small);line-height:1.55;color:var(--ink-2);min-width:0}
.findings li::before{display:none}
.findings li.bad{border-color:var(--status-danger);background:var(--status-danger-bg)}
.findings li.warn{border-color:var(--status-caution);background:var(--status-caution-bg)}
.findings li.good{border-color:var(--status-success);background:var(--status-success-bg)}
.finding-level{display:block;margin-bottom:5px;font:600 12px/1.4 var(--sans);color:var(--ink)}
.finding-message{min-width:0;overflow-wrap:anywhere}
.findings b{color:var(--ink);font-weight:600}
.findings .cite{display:block;margin-top:6px;font:500 10px/1.4 var(--mono);letter-spacing:.04em;color:var(--ink-3);white-space:normal;overflow-wrap:anywhere}
.status-pill{display:inline-flex;align-items:center;font:600 13px/1.35 var(--sans);letter-spacing:0;padding:8px 12px;border-radius:4px;white-space:normal;max-width:100%}
.status-pill::before{display:none}
.status-pill.ok{background:var(--status-success-bg);color:var(--status-success)}
.status-pill.warn{background:var(--status-caution-bg);color:var(--status-caution)}
.status-pill.bad{background:var(--status-danger-bg);color:var(--status-danger)}

/* ---------- list table (building list, label queue) ---------- */
.tool-list{width:100%;border-collapse:collapse;font-size:var(--fs-small)}
.tool-list th{text-align:left;font:500 var(--fs-label)/1.3 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);padding:0 10px 8px 0;border-bottom:1px solid var(--ink)}
.tool-list th button{font:inherit;letter-spacing:inherit;text-transform:inherit;color:inherit}
.tool-list th button:hover{color:var(--ink)}
.tool-list td{padding:10px 10px 10px 0;border-bottom:1px solid var(--rule);vertical-align:top}
.tool-list td.mono{font-family:var(--mono);font-size:13px}
.tool-list .row-actions{display:flex;gap:12px;justify-content:flex-end;white-space:nowrap}
.tool-list .row-actions button,.tool-list .row-actions a{color:var(--acc);font-size:13px;font-weight:500}
.tool-list-wrap{overflow-x:auto}
.tool-summary{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:var(--fs-small);color:var(--ink-2)}
.tool-summary b{color:var(--ink);font-family:var(--mono);font-weight:500}

/* ---------- one-line diagram (calculator) ---------- */
.oneline{background:var(--panel);border:1px solid var(--rule);padding:12px 8px}
.oneline svg{width:100%;height:auto;overflow:visible}
.oneline .ol-wire{stroke:var(--ink);stroke-width:2;fill:none}
.oneline .ol-sym{stroke:var(--ink);stroke-width:2;fill:var(--panel)}
.oneline .ol-off .ol-sym,.oneline .ol-off .ol-wire{stroke:var(--rule-2);stroke-dasharray:4 4}
.oneline .ol-off text{fill:var(--ink-3)}
.oneline text{font:500 12px var(--sans);fill:var(--ink)}
.oneline text.ol-sub{font:400 11px var(--mono);fill:var(--ink-2)}
.oneline text.ol-ka{font:500 11px var(--mono);fill:var(--acc)}
.oneline .ol-hit{cursor:pointer}
.oneline .ol-hit:hover .ol-sym{stroke:var(--acc)}
.oneline .ol-hit.is-active .ol-sym{stroke:var(--acc);stroke-width:3}
.oneline .ol-hit.is-active text:not(.ol-sub):not(.ol-ka){fill:var(--acc)}
.oneline .ol-hit:focus{outline:none}
.oneline .ol-hit:focus-visible .ol-sym{stroke:var(--acc);stroke-width:3}
.oneline .ol-fault{fill:var(--acc);stroke:none}
.oneline-note{font-size:12px;color:var(--ink-3);margin-top:8px}

.calc-step{display:grid;gap:18px;padding:22px 0;border-top:1px solid var(--rule)}
.calc-step.is-active{border-top-color:var(--acc)}
.calc-step>h3{display:flex;justify-content:space-between;align-items:center;gap:12px}
.calc-step .toggle{display:inline-flex;align-items:center;gap:8px;font-size:var(--fs-small);font-weight:500;color:var(--ink-2)}
.calc-step .toggle input{width:16px;height:16px;accent-color:var(--ink)}
.calc-step[data-off] .calc-body{display:none}
.form-row.three{display:grid;gap:18px}
@media(min-width:700px){.form-row.three{grid-template-columns:repeat(3,1fr)}}
@media(min-width:1000px){.tool-grid.calc{grid-template-columns:1.25fr 1fr}.tool-grid .sticky{position:sticky;top:calc(var(--header-h) + 68px)}}
.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;font-size:var(--fs-small)}
.kv dt{color:var(--ink-3)}
.kv dd{font-family:var(--mono);color:var(--ink);text-align:right}

/* ---------- label preview (printer) ---------- */
.label-preview{background:var(--sunken);padding:20px;display:grid;place-items:center}
.label-preview svg{width:100%;max-width:520px;height:auto;box-shadow:0 1px 2px rgba(0,0,0,.08),0 8px 24px rgba(0,0,0,.08);background:#fff}
.ack{display:flex;gap:10px;align-items:flex-start;font-size:var(--fs-small);line-height:1.5;padding:14px;border:1px solid var(--rule-2);background:var(--panel)}
.ack input{width:16px;height:16px;margin-top:3px;flex-shrink:0;accent-color:var(--ink)}
.btn[disabled]{opacity:.45;cursor:not-allowed}

ul.plain-list{list-style:disc;padding-left:18px;display:grid;gap:4px;font-size:var(--fs-small);color:var(--ink-2);line-height:1.5}

@media print{
  .app-bar{display:none !important}
  .tool-list .row-actions{display:none}
  body.print-list main>section:not(#list-sec){display:none !important}
}

/* Explicit confirmation/error text remains legible without color cues. */
#form-msg.notice-success,#form-msg.notice-error{padding:12px 14px;border:1px solid var(--rule-2);border-left-width:4px;font-size:14px;font-weight:600;line-height:1.5;color:var(--ink)}
#form-msg.notice-success{border-left-color:var(--status-success);background:var(--status-success-bg)}
#form-msg.notice-error{border-left-color:var(--status-danger);background:var(--status-danger-bg)}
.tool-alert{border-left-width:4px}
.tool-alert .dot{display:none}