/* AI Transactions - Controlled Transaction Demonstrator - Candidate 01 - Revision 3
   Visual identity follows the accepted public website:
   black base, teal #00CEEC, silver text, subtle navy panels.
   Amber #C47B2B is used only for exceptions, blocks and unresolved states. */

:root{
  --black:#000000;
  --base:#05070a;
  --navy-0:#070c14;
  --navy-1:#0a121e;
  --navy-2:#0f1b2c;
  --teal:#00ceec;
  --teal-soft:#5fdcf1;
  --teal-dim:rgba(0,206,236,.10);
  --teal-line:rgba(0,206,236,.38);
  --amber:#C47B2B;
  --amber-text:#C47B2B;
  --amber-dim:rgba(196,123,43,.10);
  --amber-bdr:rgba(196,123,43,.45);
  --white:#f5f8fa;
  --silver:#c9d1da;
  --steel:#9ba8b6;
  --line:rgba(201,209,218,.14);
  --line-hi:rgba(201,209,218,.28);
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --serif:Georgia,"Times New Roman",serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --header-h:72px;      /* header minimum height (layout only) */
  --header-clear:73px;  /* rendered header height; measured and updated by app.js */
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-clear) + 16px)}
body{font-family:var(--sans);background:var(--base);color:var(--silver);line-height:1.65;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:var(--teal);text-underline-offset:3px}
ul,ol{list-style:none}
:focus-visible{outline:2px solid var(--teal);outline-offset:3px;border-radius:2px}
[hidden]{display:none!important}
.wrap{max-width:1180px;margin:0 auto;padding:0 2.5rem}
@media (max-width:768px){.wrap{padding:0 1.25rem}}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap}
.skip{position:absolute;left:1rem;top:-200px;z-index:2000;background:var(--teal);color:var(--black);font-weight:600;font-size:.875rem;padding:.625rem 1rem;border-radius:0 0 3px 3px;text-decoration:none}
.skip:focus{top:0}

/* App content needs scripting; the noscript explanation covers the rest. */
.app{display:none}
.js .app{display:block}
.noscript{padding:4rem 2.5rem}
.noscript h1{font-family:var(--serif);font-weight:400;color:var(--white);font-size:2rem;margin-bottom:1rem}
.noscript p{max-width:68ch}

/* Header: compact AI mark + silver TRANSACTIONS, baseline-aligned (as on the accepted site) */
.site-header{position:sticky;top:0;z-index:1000;background:var(--black);border-bottom:1px solid var(--line)}
.hdr{display:flex;align-items:center;justify-content:space-between;gap:1rem 1.5rem;min-height:var(--header-h);flex-wrap:wrap;padding-top:.5rem;padding-bottom:.5rem}
.brand{display:flex;align-items:flex-end;gap:.375rem;text-decoration:none;color:var(--white);flex-shrink:0}
.brand .brand-mark{width:64px;height:auto}
.brand .brand-word{height:13px;width:auto;margin-bottom:.5px;transform:translateY(-.5px)}
.brand-fallback{display:none;font-size:.8125rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--white)}
.brand--fallback img{display:none}
.brand--fallback .brand-fallback{display:inline}
.nav-list{display:flex;flex-wrap:wrap;gap:.25rem}
.nav-list a{display:block;color:var(--silver);text-decoration:none;font-size:.75rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;padding:.5rem .75rem;border-bottom:1px solid transparent}
.nav-list a:hover{color:var(--white);border-bottom-color:var(--teal)}
@media (max-width:860px){
  .brand .brand-mark{width:56px}
  .brand .brand-word{height:12px}
  .hdr{min-height:0}
  .site-nav{width:100%}
  .nav-list{justify-content:space-between;gap:0}
  .nav-list a{padding:.5rem .25rem;font-size:.6875rem;letter-spacing:.1em}
}
@media (max-width:480px){.brand .brand-word{height:10px}}
@media (max-width:374px){.brand .brand-word{height:9px;transform:translateY(-.75px)}.nav-list a{letter-spacing:.06em}}

/* Typography */
h1,h2{font-family:var(--serif);font-weight:400;color:var(--white);letter-spacing:-.01em}
h1{font-size:clamp(2rem,4vw,3rem);line-height:1.1;margin-bottom:1.25rem}
h2{font-size:clamp(1.5rem,2.6vw,2rem);line-height:1.2;margin-bottom:.75rem}
h3{color:var(--white)}
.eyebrow{display:block;font-size:.75rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--teal);margin-bottom:1rem}
.lede{font-size:1.0625rem;line-height:1.7;max-width:62ch;margin-bottom:.875rem}
.lede--sub{color:var(--steel);font-size:1rem}
.panel-intro{color:var(--steel);max-width:70ch;margin-bottom:1.25rem}
.note{font-size:.9375rem;color:var(--steel);margin-top:1rem}
.note--small{font-size:.875rem}
.note--warn{color:var(--amber-text);border-left:2px solid var(--amber);padding-left:.75rem}
.note--closed{color:var(--silver);border-left:2px solid var(--teal);padding-left:.75rem}
.muted{color:var(--steel)}
.mt{margin-top:3.5rem}
.sub-heading{font-size:.8125rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;margin:2.5rem 0 1rem}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;font:inherit;font-size:.8125rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;text-decoration:none;border-radius:3px;padding:.8125rem 1.25rem;border:1px solid transparent;cursor:pointer;text-align:center;min-height:44px}
.btn--pri{background:var(--teal);color:var(--black);border-color:var(--teal)}
.btn--pri:hover{background:var(--teal-soft);border-color:var(--teal-soft)}
.btn--out{background:transparent;color:var(--white);border-color:var(--teal-line)}
.btn--out:hover{border-color:var(--teal);background:var(--teal-dim)}
.btn--ghost{background:transparent;color:var(--silver);border-color:var(--line-hi)}
.btn--ghost:hover{color:var(--white);border-color:var(--silver)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn:disabled:hover{background:transparent;border-color:var(--line-hi)}
.btn--pri:disabled:hover{background:var(--teal);border-color:var(--teal)}

/* Intro + controls */
.intro{background:var(--black);padding:3rem 0 3.25rem;border-bottom:1px solid var(--line)}
.intro-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:3rem;align-items:start}
.sim-badge{display:inline-block;margin-top:.75rem;font-size:.75rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--teal);border:1px solid var(--teal-line);background:var(--teal-dim);border-radius:2px;padding:.375rem .75rem}
.sim-badge--inline{margin:.25rem 0 1rem}
.controls{background:var(--navy-1);border:1px solid var(--line-hi);border-radius:4px;padding:1.5rem}
.control-field{margin-bottom:1.125rem}
.control-field label{display:block;font-size:.75rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--white);margin-bottom:.5rem}
.control-field select{width:100%;max-width:100%;min-width:0;text-overflow:ellipsis;font:inherit;font-size:.9375rem;color:var(--white);background:var(--navy-2);border:1px solid var(--line-hi);border-radius:3px;padding:.6875rem .75rem;min-height:44px}
.control-field select:disabled{opacity:.6}
.control-desc{font-size:.875rem;color:var(--steel);margin-top:.5rem}
.control-buttons{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.625rem;margin-top:1.25rem}
.control-buttons--two{grid-template-columns:repeat(2,minmax(0,1fr))}
.control-buttons .btn{padding:.75rem .625rem;letter-spacing:.06em}
.control-help{font-size:.875rem;color:var(--steel);margin-top:.875rem}
.run-status{margin-top:.875rem;font-size:.9375rem;font-weight:600;color:var(--white);border-left:2px solid var(--teal);padding-left:.75rem}
.run-status.is-human{border-left-color:var(--silver)}
.run-status.is-warn{border-left-color:var(--amber);color:var(--amber-text)}
.msg{margin-top:.75rem;font-size:.875rem;color:var(--silver)}
.msg.is-warn{color:var(--amber-text)}
.disclosure{margin-top:1.125rem;padding-top:1rem;border-top:1px solid var(--line);font-size:.8125rem;line-height:1.6;color:var(--steel)}
@media (max-width:960px){.intro-grid{grid-template-columns:minmax(0,1fr);gap:2rem}}
@media (max-width:520px){.control-buttons{grid-template-columns:minmax(0,1fr)}}

/* Sections and panels */
.sec{--sec-pad:4rem;padding:var(--sec-pad) 0;border-top:1px solid var(--line)}
/* Fragment arrivals: header clearance comes only from html scroll-padding-top.
   This margin removes the section's decorative top padding so the first panel or
   heading, not empty space, lands just below the header. */
.sec[id]{scroll-margin-top:calc(-1 * var(--sec-pad))}
.sec--navy{background:var(--navy-0)}
@media (max-width:768px){.sec{--sec-pad:3rem}}
.two-col{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:2rem;align-items:start}
.two-col--decision{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr)}
@media (max-width:960px){.two-col,.two-col--decision{grid-template-columns:minmax(0,1fr)}}
.panel{background:var(--navy-1);border:1px solid var(--line);border-radius:4px;padding:1.75rem}
@media (max-width:480px){.panel{padding:1.25rem}}

/* Mandate */
.mandate-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 1.5rem;border-top:1px solid var(--line)}
.field{padding:.5rem 0;border-bottom:1px solid var(--line);min-width:0}
.field dt{font-size:.6875rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--steel)}
.field dd{color:var(--white);font-size:.9375rem;overflow-wrap:anywhere}
.field dd.is-warn{color:var(--amber-text)}
.field dd.is-warn::before{content:"\2715  ";}
@media (max-width:420px){.mandate-fields{grid-template-columns:1fr}}
.mandate-history{margin-top:1.25rem;border-left:2px solid var(--teal-line);padding-left:1rem}
.mandate-history h3{font-size:.75rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;margin-bottom:.5rem}
.mandate-history li{font-family:var(--mono);font-size:.875rem;color:var(--white)}

/* Lifecycle */
.lifecycle{border-top:1px solid var(--line)}
.stage{display:grid;grid-template-columns:1.25rem 2rem 1fr;gap:.25rem;align-items:center;padding:.5rem 0;border-bottom:1px solid var(--line);color:var(--silver)}
.stage-mark{color:var(--teal);font-size:.75rem}
.stage-num{font-size:.75rem;font-weight:700;letter-spacing:.12em;color:var(--steel)}
.stage.is-done .stage-name{color:var(--white)}
.stage.is-current{background:var(--teal-dim);box-shadow:inset 2px 0 0 var(--teal)}
.stage.is-current .stage-num{color:var(--teal)}
.stage.is-current .stage-name{color:var(--white);font-weight:600}
.stage--branch .stage-name{font-style:italic}
.stage--branch.is-current{background:var(--amber-dim);box-shadow:inset 2px 0 0 var(--amber)}
.stage--branch.is-current .stage-mark,.stage--branch.is-current .stage-num{color:var(--amber-text)}
.routes{margin-top:1.25rem;display:grid;gap:.875rem}
.route{display:grid;grid-template-columns:36px 1fr;gap:.125rem .75rem;font-size:.875rem;color:var(--steel)}
.route strong{color:var(--white);font-size:.8125rem;letter-spacing:.04em}
.route span:last-child{grid-column:2}
.route-line{grid-row:span 2;align-self:start;margin-top:.6rem;height:0;border-top:2px solid var(--teal)}
.route--loop .route-line{height:10px;border:1.5px solid var(--teal);border-bottom:none;border-radius:2px 2px 0 0;margin-top:.45rem}
.route--branch .route-line{border-top:1.5px dashed var(--amber)}

/* Decision panel */
.panel--decision{border-color:var(--line-hi)}
.step-toolbar{display:flex;gap:.625rem;padding-bottom:1.25rem;margin-bottom:1.25rem;border-bottom:1px solid var(--line)}
.step-toolbar #next-btn{flex:1 1 0%;min-width:0}
.step-toolbar #reset-btn-panel{flex:0 0 auto}
.mapping-block{margin-top:3.5rem}
.step-heading{font-family:var(--serif);font-weight:400;font-size:1.375rem;line-height:1.3;color:var(--white);margin-bottom:.625rem}
.step-heading:focus{outline:none}
.step-heading:focus-visible{outline:2px solid var(--teal);outline-offset:4px}
.step-body{margin-bottom:1rem}
.step-result{margin:0 0 .875rem;padding:.75rem 1rem;border-left:2px solid var(--teal);background:var(--teal-dim);color:var(--white)}
.status-lines{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 1.25rem;margin-bottom:1rem;border-top:1px solid var(--line)}
@media (max-width:480px){.status-lines{grid-template-columns:1fr}}
.outage-note{margin-bottom:1rem;padding:.75rem 1rem;border:1px solid var(--amber-bdr);background:var(--amber-dim);color:var(--silver);font-size:.875rem;border-radius:3px}
.decision-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 1.25rem;border-top:1px solid var(--line-hi);margin-top:.5rem}
.field--wide{grid-column:1 / -1}
@media (max-width:480px){.decision-fields{grid-template-columns:1fr}}
.decision-pill{display:inline-flex;align-items:center;gap:.25rem;font-size:.8125rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;border-radius:2px;padding:.25rem .625rem;margin-top:.25rem;border:1px solid}
.decision-pill--ok{color:var(--teal);border-color:var(--teal-line);background:var(--teal-dim)}
.decision-pill--neutral{color:var(--white);border-color:var(--line-hi);background:rgba(201,209,218,.06)}
.decision-pill--warn{color:var(--amber-text);border-color:var(--amber-bdr);background:var(--amber-dim)}
.decision-help{display:block;margin-top:.5rem;font-size:.8125rem;line-height:1.55;color:var(--steel)}
.choice-group{display:flex;flex-wrap:wrap;gap:.625rem;margin-top:1.25rem;padding-top:1.25rem;border-top:1px solid var(--line)}
@media (max-width:480px){.choice-group .btn{width:100%}}

/* Outcomes */
.outcome-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem}
@media (max-width:360px){.outcome-grid{grid-template-columns:1fr}}
.outcome{border:1px solid var(--line);border-radius:3px;padding:.875rem 1rem;background:var(--navy-2);min-width:0}
.outcome-label{display:block;font-size:.6875rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--steel);margin-bottom:.25rem}
.outcome-value{display:block;color:var(--white);font-size:.9375rem;line-height:1.4;overflow-wrap:anywhere}
.outcome-ref{display:block;font-family:var(--mono);font-size:.75rem;color:var(--steel)}
.outcome-ref:empty{display:none}
.outcome[data-tone="ok"]{border-color:var(--teal-line)}
.outcome[data-tone="ok"] .outcome-value::before{content:"\2713  ";color:var(--teal)}
.outcome[data-tone="warn"]{border-color:var(--amber-bdr);background:var(--amber-dim)}
.outcome[data-tone="warn"] .outcome-value::before{content:"\2715  ";color:var(--amber-text)}
.outcome[data-tone="unknown"]{border-style:dashed;border-color:var(--amber-bdr)}
.outcome[data-tone="unknown"] .outcome-value::before{content:"?  ";color:var(--amber-text);font-weight:700}

/* End-of-run summary */
.run-summary{margin-top:2rem;padding:1.75rem;border:1px solid var(--teal-line);border-radius:4px;background:var(--navy-1)}
.run-summary p{max-width:72ch}
.run-summary .btn{margin-top:1rem}

/* Evidence */
.evidence-tools{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem 1.25rem}
.evidence-tools .note{margin-top:0;max-width:62ch}
.event-list{margin-top:1.5rem;border-top:1px solid var(--line)}
.event{padding:1rem 0;border-bottom:1px solid var(--line)}
.event-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:.25rem 1rem}
.event-id{font-family:var(--mono);font-size:.8125rem;color:var(--teal)}
.event--warn .event-id{color:var(--amber-text)}
.event-title{color:var(--white);font-weight:600}
.event-time{font-family:var(--mono);font-size:.75rem;color:var(--steel)}
.event-summary{margin:.25rem 0 .5rem;max-width:80ch}
.event-toggle{font:inherit;font-size:.75rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--silver);background:transparent;border:1px solid var(--line-hi);border-radius:3px;padding:.5rem .75rem;cursor:pointer;min-height:36px}
.event-toggle:hover{color:var(--white);border-color:var(--silver)}
.event-detail{margin-top:.75rem;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 1.25rem;background:var(--navy-1);border:1px solid var(--line);border-radius:3px;padding:.5rem 1rem}
@media (max-width:860px){.event-detail{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:480px){.event-detail{grid-template-columns:1fr}}
.event-detail .field dd{font-size:.875rem}

/* Participants */
.participant-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}
@media (max-width:960px){.participant-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.participant-grid{grid-template-columns:1fr}}
.participant{position:relative;background:var(--navy-1);border:1px solid var(--line);border-radius:4px;padding:1.125rem 1.25rem}
.p-badge{display:inline-block;font-size:.625rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--steel);border:1px solid var(--line-hi);border-radius:2px;padding:.125rem .5rem;margin-bottom:.625rem}
.p-role{display:block;font-size:.75rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--teal)}
.p-name{display:block;color:var(--white);font-weight:600;margin:.125rem 0 .25rem;overflow-wrap:anywhere}
.p-desc{display:block;font-size:.875rem;color:var(--steel)}

/* Mapping table */
.table-wrap{border:1px solid var(--line);border-radius:4px;overflow:hidden}
.mapping{width:100%;border-collapse:collapse;font-size:.9375rem}
.mapping th,.mapping td{text-align:left;padding:.75rem 1rem;border-bottom:1px solid var(--line);vertical-align:top}
.mapping thead th{font-size:.6875rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--steel);background:var(--navy-1)}
.mapping tbody th{color:var(--white);font-weight:600}
.mapping td.surface{color:var(--teal);font-weight:600;white-space:nowrap}
.mapping tbody tr:last-child th,.mapping tbody tr:last-child td{border-bottom:none}
@media (max-width:860px){
  .mapping thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
  .mapping,.mapping tbody,.mapping tr,.mapping th,.mapping td{display:block;width:100%}
  .mapping tr{padding:.75rem 1rem;border-bottom:1px solid var(--line)}
  .mapping tbody tr:last-child{border-bottom:none}
  .mapping th,.mapping td{padding:.25rem 0;border:none}
  .mapping td.surface{white-space:normal}
  .mapping td::before{content:attr(data-label);display:block;font-size:.6875rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--steel)}
}

/* Benefits and counter-thesis */
.benefit-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 2rem}
@media (max-width:860px){.benefit-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.benefit-list{grid-template-columns:1fr}}
.benefit{padding:1rem 0;border-top:1px solid var(--line)}
.benefit strong{display:block;color:var(--white);margin-bottom:.25rem}
.benefit span{font-size:.9375rem}
.counter{margin-top:2rem;padding:1.5rem;border-left:2px solid var(--line-hi);background:var(--navy-1)}
.counter .sub-heading{margin-top:0}
.counter p{max-width:75ch}
.counter p + p{margin-top:.75rem;color:var(--steel)}

/* Contact */
.contact-sec{background:var(--black)}
.contact{display:grid;grid-template-columns:1.4fr 1fr;gap:2.5rem;align-items:start}
.contact-card{border:1px solid var(--teal-line);border-radius:4px;padding:1.75rem;background:var(--navy-0)}
.contact-card address{font-style:normal;color:var(--white);line-height:1.8;margin-bottom:1.25rem}
.contact-card address a{overflow-wrap:anywhere}
.contact-card .btn{width:100%}
@media (max-width:860px){.contact{grid-template-columns:1fr}}

/* Footer */
.site-footer{background:var(--black);border-top:1px solid var(--line);padding:2.5rem 0}
.footer-disclosure{font-size:.8125rem;color:var(--steel);line-height:1.7}
.copyright{margin-top:1rem;font-size:.75rem;color:var(--steel)}

/* Reset dialog */
.reset-dialog{margin:auto;max-width:420px;width:calc(100% - 2.5rem);background:var(--navy-1);color:var(--white);border:1px solid var(--line-hi);border-radius:4px;padding:1.5rem}
.reset-dialog::backdrop{background:rgba(0,0,0,.7)}
.dialog-buttons{display:flex;flex-wrap:wrap;gap:.625rem;margin-top:1.25rem}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
}
@media print{.site-header,.controls,.choice-group,.event-toggle,.evidence-tools .btn{display:none}}