/* ============================================================================
   FraudCheck API — design system
   Ported from the Claude Design canvas. Tokens + reusable components.
   Light is default; [data-theme="dark"] overrides. App shell defaults to dark.
   ============================================================================ */

:root {
  --sans: 'Hanken Grotesk', system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --bg:#f6f8fc; --bg1:#ffffff; --bg2:#f0f3f9; --bg3:#e7ecf4;
  --bd:#e4e9f1; --bd2:#d2d9e5;
  --tx:#0e1622; --tx2:#4c586e; --tx3:#78839a;
  --ac:#4a63f0; --ac2:#3b52d6; --ac-b:#ecefff;
  --ok:#0a8f5f; --warn:#a9700f; --bad:#d1443d; --info:#2c6ee0;
  --ok-b:#e4f6ee; --warn-b:#fbf1de; --bad-b:#fbe8e7; --info-b:#e7f0fd;
  --shadow: 0 10px 34px rgba(20,30,60,.10);
  --shadow-sm: 0 2px 10px rgba(20,30,60,.06);
  --code-bg:#0e1420; --code-bd:#1e2739;
  --c-key:#8fb3ff; --c-str:#7fd7a6; --c-num:#f2b23d; --c-com:#5b6b86;
}

[data-theme="dark"] {
  --bg:#0a0c11; --bg1:#0f131a; --bg2:#151a23; --bg3:#1b212c;
  --bd:#232a37; --bd2:#2f3746;
  --tx:#e8ebf2; --tx2:#99a3b4; --tx3:#697384;
  --ac:#5b74ff; --ac2:#8296ff; --ac-b:#1a2138;
  --ok:#37d39b; --warn:#f2b23d; --bad:#f2645e; --info:#6aa3ff;
  --ok-b:#0f2a24; --warn-b:#2e2513; --bad-b:#2e1817; --info-b:#152436;
  --shadow: 0 12px 34px rgba(0,0,0,.5);
  --shadow-sm: 0 2px 10px rgba(0,0,0,.35);
  --code-bd:#1b2330;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg); color: var(--tx);
  font-family: var(--sans); letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased; min-height: 100vh;
}
::selection { background: color-mix(in srgb, var(--ac) 30%, transparent); }
a { color: var(--ac); text-decoration: none; }
a:hover { color: var(--ac2); }
h1,h2,h3,h4 { letter-spacing: -0.02em; }
code, pre, .mono { font-family: var(--mono); }
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-thumb { background: var(--bd2); border-radius: 8px; border: 3px solid transparent; background-clip: content-box; }
@keyframes fcspin { to { transform: rotate(360deg); } }
@keyframes fcpulse { 0%,100%{ opacity:.45 } 50%{ opacity:1 } }

/* ---- layout ---------------------------------------------------------------*/
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 28px; }
.wrap-narrow { max-width: 1000px; margin: 0 auto; padding: 0 28px; }
.wrap-prose { max-width: 820px; margin: 0 auto; padding: 0 28px; }
.section { padding: 48px 0; }
.section-sm { padding: 28px 0; }
.center { text-align: center; }
.grid { display: grid; gap: 16px; }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) {
  .cols-2, .cols-3, .cols-4 { grid-template-columns: 1fr; }
}
/* phones: tighten the page gutters and vertical rhythm so nothing runs off-screen */
@media (max-width: 600px) {
  .wrap, .wrap-narrow, .wrap-prose { padding: 0 18px; }
  .section { padding: 36px 0; }
  .section-sm { padding: 22px 0; }
}
/* sidebar + content layout (public Docs): collapses to one column on narrow screens so the
   fixed-width nav can't push the content off-screen. minmax(0,1fr) lets code/tables scroll. */
.side-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 40px; align-items: start; }
@media (max-width: 860px) {
  .side-layout { grid-template-columns: 1fr; gap: 20px; }
  .side-layout > nav { position: static !important; }
}

/* ---- text helpers ---------------------------------------------------------*/
.muted { color: var(--tx2); }
.muted2 { color: var(--tx3); }
.eyebrow { font-family: var(--mono); font-size: 12px; color: var(--ac);
  letter-spacing: .08em; text-transform: uppercase; margin-bottom: 10px; }
.lead { font-size: 18px; line-height: 1.6; color: var(--tx2); }

/* ---- nav ------------------------------------------------------------------*/
.nav { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 82%, transparent); border-bottom: 1px solid var(--bd); }
.nav-inner { height: 64px; display: flex; align-items: center; gap: 26px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: var(--tx); font-size: 17px; }
.brand .mark { width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(140deg, var(--ac), #8f6bff); display: grid; place-items: center;
  box-shadow: 0 2px 8px color-mix(in srgb, var(--ac) 45%, transparent); }
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a { color: var(--tx2); font-size: 14px; font-weight: 500; }
.nav-links a:hover { color: var(--tx); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 14px; }
@media (max-width: 820px){ .nav-links { display: none; } }

/* ---- buttons --------------------------------------------------------------*/
.btn { font: inherit; font-size: 15px; font-weight: 600; cursor: pointer;
  padding: 13px 22px; border-radius: 10px; border: 1px solid transparent;
  display: inline-flex; align-items: center; gap: 8px; transition: background .15s, border-color .15s; }
.btn-sm { font-size: 13.5px; padding: 9px 16px; border-radius: 9px; }
.btn-primary { color: #fff; background: var(--ac);
  box-shadow: 0 4px 14px color-mix(in srgb, var(--ac) 40%, transparent); }
.btn-primary:hover { background: var(--ac2); color: #fff; }
.btn-ghost { color: var(--tx); background: var(--bg1); border-color: var(--bd2); }
.btn-ghost:hover { background: var(--bg2); color: var(--tx); }

/* ---- pills / badges -------------------------------------------------------*/
.pill { display: inline-flex; align-items: center; gap: 8px; padding: 5px 12px;
  border: 1px solid var(--bd); border-radius: 999px; background: var(--bg1);
  font-size: 13px; color: var(--tx2); }
.dot-ok { width: 7px; height: 7px; border-radius: 50%; background: var(--ok);
  box-shadow: 0 0 0 3px var(--ok-b); }
.badge { font-size: 11px; font-weight: 700; padding: 3px 10px; border-radius: 999px; }
.badge-ac { color: #fff; background: var(--ac); }

/* status chip colors (icon + text, never color alone) */
.s-pass  { --chip-bg: var(--ok-b);   --chip-fg: var(--ok); }
.s-info  { --chip-bg: var(--info-b); --chip-fg: var(--info); }
.s-flag  { --chip-bg: var(--warn-b); --chip-fg: var(--warn); }
.s-alert { --chip-bg: var(--bad-b);  --chip-fg: var(--bad); }

/* ---- cards ----------------------------------------------------------------*/
.card { border: 1px solid var(--bd); border-radius: 14px; background: var(--bg1); }
.card-pad { padding: 24px; }
.card-sm { border-radius: 12px; }

/* ---- code blocks ----------------------------------------------------------*/
.code { border: 1px solid var(--code-bd); border-radius: 14px; overflow: hidden;
  background: var(--code-bg); box-shadow: var(--shadow); }
.code-head { display: flex; align-items: center; gap: 8px; padding: 12px 16px;
  border-bottom: 1px solid var(--code-bd); font-family: var(--mono); font-size: 12px; color: #6a7385; }
.code-body { margin: 0; padding: 18px; font-family: var(--mono); font-size: 12.5px;
  line-height: 1.7; color: #c7cfdd; overflow-x: auto; }
/* request/response split inside the hero code card — stacks on phones */
.code-split { display: grid; grid-template-columns: 1fr 1fr; }
@media (max-width: 640px) { .code-split { grid-template-columns: 1fr; } }
.dot { width: 11px; height: 11px; border-radius: 50%; display: inline-block; }
.k { color: var(--c-key); } .st { color: var(--c-str); } .n { color: var(--c-num); } .cm { color: var(--c-com); }

/* ---- signal row + gauge ---------------------------------------------------*/
.sigrow { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-radius: 9px; }
.sigrow + .sigrow { border-top: 1px solid var(--bd); }
.sigrow:hover { background: var(--bg2); }
.chip { width: 22px; height: 22px; border-radius: 6px; display: grid; place-items: center;
  flex-shrink: 0; font-size: 12px; font-weight: 800; background: var(--chip-bg); color: var(--chip-fg); }
.sigrow .field { font-family: var(--mono); font-size: 13px; color: var(--tx2); flex: 1; min-width: 0; }
/* let a long value (e.g. a reason-code explanation on the screen tool) shrink + wrap instead of
   forcing the row wider than the viewport on phones */
.sigrow .val { font-family: var(--mono); font-size: 13px; font-weight: 600; color: var(--tx);
  min-width: 0; overflow-wrap: anywhere; }
.sigrow .stat { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em;
  color: var(--chip-fg); min-width: 46px; text-align: right; flex-shrink: 0; }
/* Free-tools result rows only (#rows): give the flexible width to the VALUE, not the field label, so a long
   reason explanation wraps and fills the row instead of being squeezed into an unreadable sliver. Scoped to
   #rows so the marketing sigrows (homepage/Checks) keep their field-left / value-right layout. */
#rows .sigrow .field { flex: 0 1 auto; }
#rows .sigrow .val { flex: 1 1 auto; white-space: normal; }
#rows .sigrow { align-items: flex-start; }

.gauge-track { height: 10px; border-radius: 999px; position: relative;
  background: linear-gradient(90deg, var(--ok), var(--warn), var(--bad)); }
.gauge-marker { position: absolute; top: 50%; transform: translate(-50%,-50%);
  width: 4px; height: 20px; background: var(--tx); border-radius: 3px; box-shadow: 0 0 0 3px var(--bg1); }
.gauge-scale { display: flex; justify-content: space-between; font-family: var(--mono);
  font-size: 11px; color: var(--tx3); margin-top: 6px; }

/* ---- pricing tiers --------------------------------------------------------*/
.tier { border: 1px solid var(--bd); border-radius: 14px; background: var(--bg1); padding: 24px; position: relative; }
.tier.popular { border-color: var(--ac); }
.tier .tier-name { font-weight: 700; font-size: 16px; }
.tier .tier-for { font-size: 12px; color: var(--tx3); min-height: 32px; margin: 4px 0 16px; }
.tier .tier-price { font-size: 30px; font-weight: 800; font-family: var(--mono); }
.tier .tier-per { font-size: 13px; color: var(--tx3); font-weight: 500; }
.feat { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--tx2); padding: 6px 0; }
.feat .yes { color: var(--ok); } .feat .no { color: var(--tx3); }

/* ---- tables ---------------------------------------------------------------*/
.tbl { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.tbl thead th { text-align: left; color: var(--tx3); font-size: 11px; text-transform: uppercase;
  letter-spacing: .05em; font-weight: 600; padding: 10px 14px; border-bottom: 1px solid var(--bd); }
.tbl tbody td { padding: 12px 14px; border-bottom: 1px solid var(--bd); color: var(--tx2); }
.tbl tbody tr:hover { background: var(--bg2); }
.tbl .mono { color: var(--tx); }

/* ---- source pills ---------------------------------------------------------*/
.srcpill { font-family: var(--mono); font-size: 12px; color: var(--tx2);
  border: 1px solid var(--bd); background: var(--bg1); padding: 7px 14px; border-radius: 8px; }

/* ---- forms ----------------------------------------------------------------*/
.field { margin-bottom: 16px; }
.label { display: block; font-size: 13px; font-weight: 600; color: var(--tx2); margin-bottom: 6px; }
.input { width: 100%; font: inherit; font-size: 14px; padding: 12px 14px; border-radius: 10px;
  border: 1px solid var(--bd2); background: var(--bg); color: var(--tx); outline: none; }
.input:focus { border-color: var(--ac); }
.input.mono { font-family: var(--mono); }
.help { font-size: 12px; color: var(--tx3); margin-top: 6px; }
.form-error, .text-danger, .validation-summary-errors { color: var(--bad); font-size: 13px; }

/* ---- footer ---------------------------------------------------------------*/
.footer { border-top: 1px solid var(--bd); padding: 40px 0; margin-top: 40px; color: var(--tx3); font-size: 13px; }
.footer a { color: var(--tx2); } .footer a:hover { color: var(--tx); }
.footer-cols { display: flex; flex-wrap: wrap; gap: 40px; justify-content: space-between; }
.footer-col { display: flex; flex-direction: column; gap: 8px; }

/* ---- theme toggle ---------------------------------------------------------*/
.theme-toggle { width: 34px; height: 34px; border-radius: 9px; border: 1px solid var(--bd2);
  background: var(--bg1); color: var(--tx2); cursor: pointer; display: grid; place-items: center; }
.theme-toggle:hover { background: var(--bg2); color: var(--tx); }

/* ---- app shell (dashboard + admin) ---------------------------------------*/
.app { display: grid; grid-template-columns: 244px 1fr; min-height: 100vh; }
.app-side { border-right: 1px solid var(--bd); background: var(--bg1); padding: 18px 14px; display: flex; flex-direction: column; gap: 4px; }
.app-side .brand { padding: 6px 10px 18px; }
.app-side a { display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: 9px;
  color: var(--tx2); font-size: 14px; font-weight: 500; }
.app-side a:hover { background: var(--bg2); color: var(--tx); }
.app-side a.active { background: var(--ac-b); color: var(--ac); font-weight: 600; }
.app-side .side-group { font-size: 11px; text-transform: uppercase; letter-spacing: .06em;
  color: var(--tx3); padding: 16px 12px 6px; font-weight: 700; }
.app-main { min-width: 0; display: flex; flex-direction: column; }
.app-top { height: 60px; border-bottom: 1px solid var(--bd); display: flex; align-items: center;
  gap: 14px; padding: 0 28px; }
.app-body { padding: 28px; }
.app-title { font-size: 22px; font-weight: 800; }
@media (max-width: 820px){ .app { grid-template-columns: 1fr; } .app-side { display: none; } }

/* ---- in-dashboard help panel (customer area) ------------------------------*/
/* Slide-out from the right; content renders server-side from HelpCatalog. */
.help-panel { position: fixed; top: 0; right: 0; bottom: 0; width: 400px; max-width: 100vw;
  background: var(--bg1); border-left: 1px solid var(--bd); box-shadow: var(--shadow);
  z-index: 90; display: flex; flex-direction: column;
  /* visibility flips instantly (so focus works the moment it opens); only the slide animates */
  visibility: hidden; transform: translateX(102%); transition: transform .18s ease; }
.help-panel.open { visibility: visible; transform: none; }
.help-head { display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-bottom: 1px solid var(--bd); }
.help-search { margin: 12px 16px; width: calc(100% - 32px); }
.help-list { flex: 1; overflow-y: auto; padding: 0 16px 16px; }
.help-group { font-size: 11px; text-transform: uppercase; letter-spacing: .05em; color: var(--tx3);
  font-weight: 700; padding: 14px 0 4px; }
.help-topic { border-bottom: 1px solid var(--bd); }
.help-topic summary { cursor: pointer; padding: 10px 0; font-size: 13.5px; font-weight: 600;
  color: var(--tx); list-style: none; }
.help-topic summary::-webkit-details-marker { display: none; }
.help-topic summary::before { content: "▸ "; color: var(--tx3); }
.help-topic[open] summary::before { content: "▾ "; }
.help-answer { padding: 0 0 12px; font-size: 13px; line-height: 1.6; color: var(--tx2); }
.help-foot { border-top: 1px solid var(--bd); padding: 12px 16px; font-size: 13px; color: var(--tx2); }
@media (max-width: 600px) { .help-panel { width: 100vw; } }

/* ---- kpi tiles ------------------------------------------------------------*/
.kpi { border: 1px solid var(--bd); border-radius: 12px; background: var(--bg1); padding: 18px 20px; }
.kpi .kpi-label { font-size: 12px; color: var(--tx3); text-transform: uppercase; letter-spacing: .05em; }
.kpi .kpi-val { font-size: 28px; font-weight: 800; font-family: var(--mono); margin-top: 6px; }

/* ---- misc -----------------------------------------------------------------*/
.stack { display: flex; flex-direction: column; }
.row { display: flex; align-items: center; }
.gap-8 { gap: 8px; } .gap-12 { gap: 12px; } .gap-16 { gap: 16px; }
.mt-8{margin-top:8px} .mt-16{margin-top:16px} .mt-24{margin-top:24px} .mt-32{margin-top:32px}
.mb-8{margin-bottom:8px} .mb-16{margin-bottom:16px} .mb-24{margin-bottom:24px}
.spin { width: 26px; height: 26px; border: 3px solid var(--bd2); border-top-color: var(--ac);
  border-radius: 50%; animation: fcspin .7s linear infinite; }
.hide { display: none !important; }

/* ---- compatibility with scaffolded Identity (bootstrap classes, no bootstrap css) ---- */
.form-control, .form-select { width: 100%; font: inherit; font-size: 14px; padding: 12px 14px;
  border-radius: 10px; border: 1px solid var(--bd2); background: var(--bg); color: var(--tx); outline: none; }
.form-control:focus, .form-select:focus { border-color: var(--ac); }
.form-floating { position: relative; margin-bottom: 14px; }
.form-floating > label { color: var(--tx3); font-size: 13px; padding: 4px 2px; display: block; margin-bottom: 4px; }
.form-floating > label { position: static; }
.form-label { display: block; font-size: 13px; font-weight: 600; color: var(--tx2); margin-bottom: 6px; }
.btn-lg { font-size: 15px; padding: 13px 22px; }
.w-100 { width: 100%; }
.checkbox, .form-check { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--tx2); margin: 8px 0; }
.form-check-input { width: 16px; height: 16px; accent-color: var(--ac); }
hr { border: none; border-top: 1px solid var(--bd); margin: 20px 0; }
.row { display: flex; flex-wrap: wrap; gap: 24px; }
.col-md-4, .col-md-6, .col-lg-4, .col-lg-6, .col-md-8 { flex: 1; min-width: 260px; }
.nav-pills .nav-link { color: var(--tx2); padding: 8px 12px; border-radius: 9px; display: block; }
.nav-pills .nav-link.active { background: var(--ac-b); color: var(--ac); font-weight: 600; }
.text-muted { color: var(--tx3); }
.alert { border-radius: 10px; padding: 12px 14px; font-size: 14px; border: 1px solid var(--bd); }
.alert-danger { background: var(--bad-b); color: var(--bad); border-color: transparent; }
.alert-success { background: var(--ok-b); color: var(--ok); border-color: transparent; }
h1, .h1 { font-size: 32px; font-weight: 800; }
h2, .h2 { font-size: 24px; font-weight: 800; }
h4 { font-size: 18px; font-weight: 700; }
.btn.btn-primary { color: #fff; background: var(--ac); }

/* ---- in-dashboard API reference (Customer → Docs & code) -------------------*/
/* Two columns: a sticky contents rail beside the content. The page is long by
   design — it's the whole integration surface — so navigation has to be free. */
.docs-wrap { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 32px; align-items: start;
  max-width: 1080px; }
.docs-body { min-width: 0; } /* let wide code blocks scroll instead of stretching the grid */
.docs-nav { position: sticky; top: 18px; display: flex; flex-direction: column; gap: 2px; }
.docs-nav a { padding: 6px 10px; border-radius: 8px; color: var(--tx2); font-size: 13px; font-weight: 500;
  text-decoration: none; }
.docs-nav a:hover { background: var(--bg2); color: var(--tx); }
.docs-nav a.active { background: var(--ac-b); color: var(--ac); font-weight: 600; }
.docs-h2 { font-size: 19px; font-weight: 700; margin: 0 0 4px; scroll-margin-top: 18px; }
.docs-wrap section { scroll-margin-top: 18px; }
.docs-sublabel { padding: 8px 14px; font-size: 10px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .06em; color: var(--tx3); border-bottom: 1px solid var(--bd); }
/* Code samples keep the dark treatment in both themes — --code-bg is dark either way,
   so the light foreground stays readable (a plain `pre` inherits body colour and vanishes). */
.doc-block { background: var(--code-bg); border: 1px solid var(--code-bd); border-radius: 10px;
  padding: 14px 16px; margin: 0; font-family: var(--mono); font-size: 12.5px; line-height: 1.65;
  color: #c7cfdd; overflow-x: auto; }
.doc-block code { color: inherit; background: none; }
.doc-code { background: var(--code-bg); color: #c7cfdd; }
.doc-code code { color: inherit; background: none; }
@media (max-width: 900px) {
  .docs-wrap { grid-template-columns: 1fr; gap: 18px; }
  .docs-nav { position: static; flex-direction: row; flex-wrap: wrap; }
}