/* ============================================================
   change-order-fairness-calculator.css
   Load ONLY on /change-order-fairness-calculator/ — see
   IS_THIS_PAGE guard in change-order-fairness-calculator.js.
   All classes are prefixed .cofc- to avoid theme/global collisions.
   ============================================================ */

/* ============================================================
   COFC — Change Order Fairness Calculator
   Signature: vertical "case file spine" — gates unlock in sequence
   like pages in an inspector's dossier. Color lives only in
   verdict states, never in decoration.
   ============================================================ */

:root{
  --cofc-bg:#0a0a0f;
  --cofc-panel:#12131a;
  --cofc-panel-border:#22232e;
  --cofc-line:#2a2c38;
  --cofc-text:#e7e7ee;
  --cofc-text-dim:#9497a8;
  --cofc-text-faint:#5f6275;

  /* signature accent — "drafting blue", distinct from Construction
     category amber (#f59e0b) and existing Contractor Markup Decoder
     (#e8a838). VERIFY against full site color list before shipping. */
  --cofc-accent:#5b8fb0;
  --cofc-accent-dim:#3d5f77;
  --cofc-accent-glow:rgba(91,143,176,0.18);

  /* semantic verdict colors — ONLY used for status, never decoration */
  --cofc-green:#3fb87f;
  --cofc-green-bg:rgba(63,184,127,0.10);
  --cofc-amber:#e0a545;
  --cofc-amber-bg:rgba(224,165,69,0.10);
  --cofc-red:#e2694f;
  --cofc-red-bg:rgba(226,105,79,0.10);

  --cofc-font-display:'Space Grotesk', sans-serif;
  --cofc-font-mono:'IBM Plex Mono', monospace;
}

.cofc-root{
  background:var(--cofc-bg);
  color:var(--cofc-text);
  font-family:var(--cofc-font-display);
  max-width:760px;
  margin:0 auto;
  padding:48px 24px 96px;
  line-height:1.5;
}

@media (prefers-reduced-motion: reduce){
  .cofc-root *{ transition:none !important; animation:none !important; }
}

/* ---------- Header ---------- */
.cofc-eyebrow{
  font-family:var(--cofc-font-mono);
  font-size:12px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--cofc-accent);
  margin-bottom:10px;
}
.cofc-h1{
  font-size:32px;
  font-weight:700;
  letter-spacing:-0.01em;
  margin:0 0 12px;
  color:#fff;
}
.cofc-intro{
  color:var(--cofc-text-dim);
  font-size:16px;
  max-width:58ch;
  margin-bottom:44px;
}

/* ---------- Spine layout ---------- */
.cofc-spine{
  position:relative;
  padding-left:28px;
}
.cofc-spine::before{
  content:"";
  position:absolute;
  left:7px;
  top:6px;
  bottom:6px;
  width:1px;
  background:var(--cofc-line);
}
.cofc-gate{
  position:relative;
  margin-bottom:20px;
  opacity:0.35;
  filter:saturate(0.5);
  pointer-events:none;
  transition:opacity 0.5s ease, filter 0.5s ease;
}
.cofc-gate.is-active{
  opacity:1;
  filter:none;
  pointer-events:auto;
}
.cofc-node{
  position:absolute;
  left:-28px;
  top:20px;
  width:15px;
  height:15px;
  border-radius:50%;
  background:var(--cofc-panel);
  border:1px solid var(--cofc-line);
  transition:all 0.3s ease;
}
.cofc-gate.is-active .cofc-node{ border-color:var(--cofc-accent); }
.cofc-gate.is-complete .cofc-node{
  background:var(--cofc-accent);
  border-color:var(--cofc-accent);
  box-shadow:0 0 0 4px var(--cofc-accent-glow);
}
.cofc-gate-optional .cofc-node{
  border-style:dashed;
  background:transparent !important;
  box-shadow:none !important;
}
.cofc-gate-optional .cofc-gate-label{ color:var(--cofc-text-faint); }

.cofc-card{
  background:var(--cofc-panel);
  border:1px solid var(--cofc-panel-border);
  border-radius:10px;
  padding:22px 24px;
}
.cofc-gate-label{
  font-family:var(--cofc-font-mono);
  font-size:11px;
  letter-spacing:0.1em;
  text-transform:uppercase;
  color:var(--cofc-text-faint);
  margin-bottom:6px;
}
.cofc-gate-title{
  font-size:17px;
  font-weight:600;
  color:#fff;
  margin:0 0 14px;
}

/* ---------- Performer toggle ---------- */
.cofc-toggle-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
  margin-bottom:16px;
}
.cofc-toggle-card{
  border:1px solid var(--cofc-panel-border) !important;
  background:#0d0e14 !important;
  border-radius:8px;
  padding:14px 16px;
  cursor:pointer;
  text-align:left;
  color:var(--cofc-text) !important;
  font-family:var(--cofc-font-display);
  transition:border-color 0.2s ease, background 0.2s ease, transform 0.15s ease;
}
.cofc-toggle-card:hover{ transform:translateY(-1px); }
.cofc-toggle-card.selected{
  border-color:var(--cofc-accent) !important;
  background:linear-gradient(180deg, var(--cofc-accent-glow), transparent 70%) !important;
}
.cofc-toggle-card b{ display:block; font-size:14px; margin-bottom:3px; color:#fff !important; }
.cofc-toggle-card span{ font-size:12.5px; color:var(--cofc-text-dim) !important; }

.cofc-ceiling-readout{
  font-family:var(--cofc-font-mono);
  font-size:13px;
  color:var(--cofc-text-dim);
  background:#0d0e14;
  border:1px solid var(--cofc-panel-border);
  border-radius:8px;
  padding:10px 14px;
}
.cofc-ceiling-readout b{
  color:var(--cofc-accent);
  font-variant-numeric:tabular-nums;
  transition:color 0.3s ease;
}

/* ---------- Inputs ---------- */
.cofc-field-row{ display:flex; gap:12px; flex-wrap:wrap; margin-bottom:12px; }
.cofc-field{ flex:1; min-width:160px; }
.cofc-field label{
  display:block;
  font-size:12.5px;
  color:var(--cofc-text-dim);
  margin-bottom:6px;
}
.cofc-field input[type=number], .cofc-field select{
  width:100%;
  background:#0d0e14 !important;
  border:1px solid var(--cofc-panel-border) !important;
  color:var(--cofc-text) !important;
  border-radius:6px;
  padding:9px 10px;
  font-family:var(--cofc-font-mono);
  font-size:14px;
}
.cofc-field input[type=number]:focus, .cofc-field select:focus{
  outline:2px solid var(--cofc-accent);
  outline-offset:1px;
  border-color:var(--cofc-accent) !important;
}
.cofc-hint{ font-size:12px; color:var(--cofc-text-faint); margin-top:4px; }

.cofc-link-btn{
  background:none !important;
  border:none !important;
  color:var(--cofc-accent) !important;
  font-size:13px;
  cursor:pointer;
  padding:0;
  text-decoration:underline;
  text-underline-offset:2px;
  font-family:var(--cofc-font-display);
}
.cofc-link-btn:focus-visible{ outline:2px solid var(--cofc-accent); outline-offset:2px; }

/* ---------- Markup radar (SVG gauge) ---------- */
.cofc-radar-wrap{ display:flex; align-items:center; gap:24px; flex-wrap:wrap; }
.cofc-radar-readout{ font-family:var(--cofc-font-mono); }
.cofc-radar-pct{ font-size:34px; font-weight:600; color:#fff; font-variant-numeric:tabular-nums; }
.cofc-radar-state{
  display:inline-block;
  margin-top:6px;
  padding:4px 10px;
  border-radius:20px;
  font-size:12.5px;
  font-family:var(--cofc-font-display);
}
.cofc-state-green{ background:var(--cofc-green-bg); color:var(--cofc-green); }
.cofc-state-amber{ background:var(--cofc-amber-bg); color:var(--cofc-amber); }
.cofc-state-red{ background:var(--cofc-red-bg); color:var(--cofc-red); }

/* ---------- Admin fee ---------- */
.cofc-switch-row{ display:flex; align-items:center; gap:10px; margin-bottom:14px; }
.cofc-warning-note{
  border-left:2px solid var(--cofc-amber);
  background:var(--cofc-amber-bg);
  padding:10px 14px;
  border-radius:0 6px 6px 0;
  font-size:13.5px;
  color:var(--cofc-text);
  margin-top:12px;
}
.cofc-info-note{
  border-left:2px solid var(--cofc-accent);
  background:var(--cofc-accent-glow);
  padding:10px 14px;
  border-radius:0 6px 6px 0;
  font-size:13.5px;
  color:var(--cofc-text);
  margin-top:12px;
}

/* ---------- Frequency pills ---------- */
.cofc-pill-row{ display:flex; gap:8px; flex-wrap:wrap; }
.cofc-pill{
  border:1px solid var(--cofc-panel-border) !important;
  background:#0d0e14 !important;
  color:var(--cofc-text-dim) !important;
  border-radius:20px;
  padding:8px 16px;
  cursor:pointer;
  font-family:var(--cofc-font-mono);
  font-size:13.5px;
}
.cofc-pill.selected{
  border-color:var(--cofc-accent) !important;
  color:#fff !important;
  background:var(--cofc-accent-glow) !important;
}

/* ---------- Timing slider (3-zone) ---------- */
.cofc-timeline{ margin-top:6px; }
.cofc-timeline-track{
  position:relative;
  height:8px;
  border-radius:4px;
  background:linear-gradient(90deg,
    var(--cofc-green) 0%, var(--cofc-green) 33%,
    var(--cofc-amber) 33%, var(--cofc-amber) 66%,
    var(--cofc-red) 66%, var(--cofc-red) 100%);
  opacity:0.55;
}
.cofc-timeline input[type=range]{
  width:100%;
  margin:8px 0 4px;
  accent-color:var(--cofc-accent);
}
.cofc-timeline-labels{
  display:flex;
  justify-content:space-between;
  font-size:11.5px;
  color:var(--cofc-text-faint);
  font-family:var(--cofc-font-mono);
}
.cofc-timeline-explain{
  margin-top:10px;
  font-size:13.5px;
  color:var(--cofc-text-dim);
}

/* ---------- Documentation checklist + donut ---------- */
.cofc-doc-wrap{ display:flex; gap:28px; flex-wrap:wrap; align-items:flex-start; }
.cofc-checklist{ flex:1; min-width:200px; display:flex; flex-direction:column; gap:8px; }
.cofc-check-row{ display:flex; align-items:center; gap:10px; font-size:14px; }
.cofc-check-row input{ accent-color:var(--cofc-accent); width:16px; height:16px; }
.cofc-donut-wrap{ text-align:center; }
.cofc-donut-label{ font-family:var(--cofc-font-mono); font-size:12px; color:var(--cofc-text-dim); margin-top:8px; }
.cofc-missing-box{
  margin-top:14px;
  font-size:13.5px;
  color:var(--cofc-text-dim);
}
.cofc-missing-box ul{ margin:6px 0 0; padding-left:18px; }

/* ---------- Optional context (collapsible) ---------- */
.cofc-optional summary{
  cursor:pointer;
  font-size:13.5px;
  color:var(--cofc-accent);
  list-style:none;
}
.cofc-optional summary::-webkit-details-marker{ display:none; }
.cofc-optional summary::before{ content:"+ "; }
.cofc-optional[open] summary::before{ content:"– "; }
.cofc-optional-body{ margin-top:14px; display:flex; flex-direction:column; gap:14px; }

/* ---------- Verdict / Inspection Board ---------- */
.cofc-verdict{
  margin-top:36px;
  border:1px solid var(--cofc-accent-dim);
  border-radius:12px;
  padding:26px 26px 22px;
  background:linear-gradient(180deg, var(--cofc-accent-glow), transparent 40%);
  opacity:0;
  max-height:0;
  overflow:hidden;
  transition:opacity 0.5s ease, max-height 0.5s ease;
}
.cofc-verdict.is-visible{ opacity:1; max-height:3000px; overflow:visible; }

.cofc-confidence{
  font-family:var(--cofc-font-mono);
  font-size:12.5px;
  color:var(--cofc-text-dim);
  margin-bottom:18px;
}
.cofc-confidence-bar{
  display:inline-block;
  width:110px;
  height:6px;
  border-radius:3px;
  background:#22232e;
  overflow:hidden;
  margin:0 8px -1px 0;
  vertical-align:middle;
}
.cofc-confidence-fill{ height:100%; border-radius:3px; }

@media (max-width:480px){
  /* inline style on Gate 4's row (grid-template-columns:1fr 1fr 1fr) beats a plain
     class rule by specificity — !important is required here, same lesson as the
     button color fix on #94. */
  .cofc-toggle-row{ grid-template-columns:1fr !important; }
}

.cofc-verdict-headline{
  font-size:20px;
  font-weight:700;
  margin:0 0 4px;
}
.cofc-verdict-sub{ font-size:13.5px; color:var(--cofc-text-dim); margin-bottom:20px; }

.cofc-board-row{
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:12px 0;
  border-top:1px solid var(--cofc-panel-border);
}
.cofc-board-row:first-of-type{ border-top:none; }
.cofc-board-icon{
  width:22px; height:22px; flex-shrink:0;
  display:flex; align-items:center; justify-content:center;
  border-radius:50%;
  font-size:12px;
  font-family:var(--cofc-font-mono);
  margin-top:1px;
}
.cofc-board-body summary{
  cursor:pointer;
  font-size:14.5px;
  font-weight:600;
  color:#fff;
  list-style:none;
}
.cofc-board-body summary::-webkit-details-marker{ display:none; }
.cofc-board-body p{
  font-size:13.5px;
  color:var(--cofc-text-dim);
  margin:8px 0 0;
}

.cofc-questions{
  margin-top:22px;
  background:#0d0e14;
  border:1px solid var(--cofc-panel-border);
  border-radius:8px;
  padding:16px 18px;
}
.cofc-questions h4{ margin:0 0 10px; font-size:13.5px; color:var(--cofc-text-dim); font-weight:600; }
.cofc-questions ul{ margin:0 0 12px; padding-left:18px; font-size:13.5px; color:var(--cofc-text); }
.cofc-questions li{ margin-bottom:6px; }
.cofc-copy-btn{
  background:var(--cofc-accent) !important;
  color:#0a0a0f !important;
  border:none !important;
  border-radius:6px;
  padding:9px 16px;
  font-family:var(--cofc-font-display);
  font-weight:600;
  font-size:13.5px;
  cursor:pointer;
}
.cofc-copy-btn:hover{ filter:brightness(1.08); }
.cofc-copy-status{ font-size:12.5px; color:var(--cofc-green); margin-left:10px; }

.cofc-review-checklist{ margin-top:20px; font-size:13.5px; color:var(--cofc-text-dim); }
.cofc-review-checklist div{ margin-bottom:5px; }

.cofc-disclaimer{
  margin-top:26px;
  font-size:12px;
  color:var(--cofc-text-faint);
  line-height:1.6;
}
.cofc-disclaimer a{ color:var(--cofc-text-dim); }

/* ---------- Article below the calculator ---------- */
.cofc-article{
  margin-top:64px;
  padding-top:40px;
  border-top:1px solid var(--cofc-panel-border);
}
.cofc-article h2{
  font-size:22px;
  color:#fff;
  margin:0 0 20px;
}
.cofc-article h3{
  font-size:15px;
  color:var(--cofc-accent);
  margin:28px 0 8px;
  font-family:var(--cofc-font-mono);
  text-transform:uppercase;
  letter-spacing:0.06em;
  font-weight:500;
}
.cofc-article p{
  font-size:15px;
  color:var(--cofc-text-dim);
  line-height:1.7;
  margin:0 0 4px;
  max-width:64ch;
}