:root{--bg:#0f1115;--card:#171a21;--border:#2a2e38;--text:#e6e8eb;--muted:#9aa0ac;--accent:#6ee7b7;--code:#10131a;--bad:#f87171;--warn:#fbbf24}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;line-height:1.55}
.wrap{max-width:1100px;margin:auto;padding:38px 20px 80px}a{color:var(--accent)}h1{font-size:clamp(2rem,6vw,3.5rem);margin:.25rem 0}.tag{color:var(--muted);max-width:820px;font-size:1.05rem}
.panel,.scenario{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:16px}.hero{margin-top:22px;padding:22px}.hero h2{margin-top:0}
.two,.scenarios{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px}.two{margin-top:16px}.scenarios{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.scenario{cursor:pointer;text-align:left;color:var(--text)}.scenario:hover,.scenario.active{border-color:var(--accent)}.scenario strong{display:block}.scenario span{color:var(--muted);font-size:.88rem}
label{display:block;color:var(--muted);font-size:.84rem;margin:12px 0 4px}
input,select,textarea{width:100%;background:#343c4a;color:#ffffff;border:1px solid #b2bac8;border-radius:6px;padding:10px;font:inherit}
input:hover,select:hover,textarea:hover{border-color:#737d90}
input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-color:var(--accent)}
.checkbox input{accent-color:var(--accent)}
button{background:var(--accent);color:#07130e;border:0;border-radius:7px;padding:10px 14px;font-weight:700;cursor:pointer}.secondary{background:var(--card);color:var(--text);border:1px solid var(--border)}
pre:focus-visible,button:focus-visible,summary:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}pre{background:var(--code);border:1px solid var(--border);border-radius:8px;padding:13px;overflow:auto;white-space:pre-wrap;font-size:.82rem}
.status{border-left:3px solid var(--warn);padding:10px 13px;background:var(--code);margin:14px 0}.ok{border-color:var(--accent)}.bad{border-color:var(--bad)}.small{font-size:.86rem;color:var(--muted)}
.validation-error{min-height:1.25em;margin:6px 0 0;color:var(--bad);font-size:.86rem}
h2.section{margin-top:42px;color:var(--accent);font-size:1rem;text-transform:uppercase;letter-spacing:.07em}code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.back{font-size:.9rem}
.checkbox{display:flex;gap:8px;align-items:center;margin-top:12px}.checkbox input{width:auto}.checkbox label{margin:0}.origin{font-size:.9rem;margin-top:8px;color:var(--muted)}
.divider{border:0;border-top:1px solid var(--border);margin:36px 0}

.step{margin:22px 0;padding:20px;border:1px solid #303643;border-radius:16px;background:#151922}
.step-head{display:flex;gap:12px;align-items:flex-start;margin-bottom:14px}
.step-number{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;flex:none;border-radius:999px;border:1px solid #65e6b8;font-weight:800}
.step-head h2{margin:2px 0 4px;font-size:1.15rem}
.step-head p{margin:0}

.wrap,.panel,.step,.two>*,.step-head>*,.scenarios>*{min-width:0}
.two{grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr))}
.scenarios{grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr))}
body{overflow-wrap:anywhere}pre{max-width:100%;white-space:pre;overflow-x:auto;overflow-wrap:normal}button{font:inherit;font-weight:700}
.cors-nav{display:flex;align-items:center;gap:12px;margin:18px 0}.cors-nav a{padding:6px 10px;border-radius:6px}.cors-nav [aria-current=page]{font-weight:700;text-decoration:underline;text-underline-offset:5px;border:1px solid var(--accent)}
.scenario[aria-pressed=true]{outline:2px solid var(--accent);outline-offset:-3px}
.badge{display:inline-block;border:1px solid var(--border);border-radius:5px;padding:2px 7px;margin:0 6px 6px 0;font:700 .78rem ui-monospace,monospace;color:var(--text)}.badge.ok{border-color:var(--accent)}.badge.bad{border-color:var(--bad)}
.token-string{color:#6ee7b7}.token-keyword{color:#c4b5fd}.token-number{color:#fbbf24}
@media(max-width:480px){.wrap{padding:24px 14px 48px}.hero,.step{padding:14px}.step-head{gap:8px}}

/* Guided controlled-comparison flow */
[hidden]{display:none!important}
.debugger-promise{max-width:900px;font-size:1.1rem}
.diagnostic-progress{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);padding:0;margin:26px 0;border:1px solid var(--border);border-radius:9px;overflow:hidden}
.diagnostic-progress li{padding:0;color:var(--muted);border-right:1px solid var(--border)}
.diagnostic-progress li:last-child{border-right:0}
.diagnostic-progress li.active{color:var(--text);background:#1d242b}
.diagnostic-progress a{display:block;padding:10px 13px;color:inherit;text-decoration:none}
.diagnostic-progress a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px}
.diagnostic-progress a[aria-disabled=true]{cursor:default;color:var(--muted);text-decoration:none;opacity:.7}
.diagnostic-progress span{color:var(--accent);font-weight:800;margin-right:6px}
.panel[id]{scroll-margin-top:18px}
.section-heading h2{margin:4px 0}.section-heading>p:last-child{color:var(--muted);margin-top:5px}
.debugger-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(280px,.75fr);gap:18px;margin-top:18px}
.compact-fields{margin-top:0}.compact-fields+.compact-fields{margin-top:4px}
.recent-targets{margin-top:8px}.recent-targets label{margin-top:0}
.request-memory{display:flex;align-items:center;flex-wrap:wrap;gap:7px 12px;margin:9px 0 2px;color:var(--muted);font-size:.82rem}
.text-button{padding:0;background:transparent;color:var(--accent);border:0;text-decoration:underline;text-underline-offset:3px;font-weight:650}
.text-button:hover{color:var(--text)}
.credentials-field{display:flex;align-items:flex-end;padding-bottom:10px}
.request-details{margin-top:16px;border-top:1px solid var(--border);padding-top:14px}
.request-details summary,.individual-tests summary{cursor:pointer;color:var(--accent);font-weight:750}
.request-details textarea{min-height:84px;resize:vertical}
.compact-warning{margin:12px 0 4px}
.known-good-control{background:var(--code);border-left:4px solid var(--accent);border-radius:6px;padding:18px}
.known-good-control h3{margin:2px 0 10px}.known-good-control p{color:var(--muted);margin:8px 0}.known-good-control p strong{color:var(--text)}
.control-label,.eyebrow{color:var(--accent);font-size:.78rem;font-weight:800;letter-spacing:.09em;margin:0;text-transform:uppercase}
.known-good-control dl{display:grid;grid-template-columns:auto minmax(0,1fr);gap:7px 12px;margin:16px 0;font-size:.88rem}
.known-good-control dt{color:var(--muted)}.known-good-control dd{margin:0;overflow-wrap:anywhere}
.guided-panel{margin-top:24px;padding:22px;scroll-margin-top:18px}.guided-panel>h2{margin:5px 0}.guided-panel>p:not(.eyebrow){color:var(--muted)}
.copy-status{display:block;min-height:1.35em;margin-top:7px}
.individual-tests{margin-top:20px;border-top:1px solid var(--border);padding-top:14px}
.compact-divider{margin:24px 0}
.outcome-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:16px}
.outcome-button{display:block;text-align:left;min-height:84px;background:#202630;color:var(--text);border:1px solid #49515f}
.outcome-button strong,.outcome-button span{display:block}.outcome-button span{color:var(--muted);font-size:.86rem;font-weight:500;margin-top:5px}
/* Both words and colors communicate each test outcome; maintain contrast on the dark buttons. */
.outcome-button .outcome-failed{color:#ff929b}
.outcome-button .outcome-worked{color:#6ee7b7}
.outcome-button:hover,.outcome-button[aria-pressed=true]{border-color:var(--accent);box-shadow:0 0 0 2px #164e3d}
.result-pair{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:18px 0}
.test-result{background:var(--code);border:1px solid var(--border);border-left-width:5px;padding:14px}
.test-result.bad{border-left-color:var(--bad)}.test-result.ok{border-left-color:var(--accent)}
.test-result strong,.test-result span{display:block}.test-result span{color:var(--muted);font-size:.9rem;margin-top:3px}
.reasoning-grid{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--border)}
.reasoning-grid section{padding:14px;border-right:1px solid var(--border);border-bottom:1px solid var(--border)}
.reasoning-grid section:nth-child(2n){border-right:0}.reasoning-grid section:nth-last-child(-n+2){border-bottom:0}
.reasoning-grid h3{margin:0 0 6px;color:var(--muted);font-size:.76rem;letter-spacing:.08em;text-transform:uppercase}
.reasoning-grid p{margin:0}.reasoning-grid section:last-child p{color:var(--accent)}
.diagnosis-banner{border-left:4px solid var(--bad);background:#25191d;padding:14px;margin:14px 0 18px}
.diagnosis-banner strong,.diagnosis-banner span{display:block}.diagnosis-banner span{color:var(--muted);margin-top:4px}
.fix-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:18px}
.browser-flow{display:grid;gap:8px;margin:10px 0 18px}
.flow-step{display:grid;grid-template-columns:28px minmax(0,1fr) auto;gap:10px;align-items:center;background:var(--code);border:1px solid var(--border);padding:10px 11px}
.flow-number{display:grid;place-items:center;width:26px;height:26px;border:1px solid var(--muted);border-radius:999px;font-weight:800}
.flow-step strong,.flow-step small{display:block}.flow-step small{color:var(--muted)}
.flow-state{color:var(--muted);font-size:.76rem;font-weight:800;text-transform:uppercase}
.flow-step.ok .flow-number,.flow-step.ok .flow-state{color:var(--accent);border-color:var(--accent)}
.flow-step.bad .flow-number,.flow-step.bad .flow-state{color:var(--bad);border-color:var(--bad)}
.flow-step.muted{opacity:.62}
.framework-tabs{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0 8px}
.framework-tab{background:transparent;color:var(--text);border:1px solid var(--border)}
.framework-tab[aria-selected=true]{color:var(--accent);border-color:var(--accent)}
@media(max-width:800px){
  .debugger-grid,.fix-grid{grid-template-columns:1fr}
  .diagnostic-progress{grid-template-columns:1fr 1fr}
  .diagnostic-progress li:nth-child(2){border-right:0}
  .diagnostic-progress li:nth-child(-n+2){border-bottom:1px solid var(--border)}
}
@media(max-width:560px){
  .outcome-grid,.result-pair,.reasoning-grid{grid-template-columns:1fr}
  .reasoning-grid section{border-right:0;border-bottom:1px solid var(--border)!important}
  .reasoning-grid section:last-child{border-bottom:0!important}
  .flow-step{grid-template-columns:28px minmax(0,1fr)}
  .flow-state{grid-column:2}
  .guided-panel{padding:16px}
}