/* =========================================================================
   BBD · Bot Detection Test Harness
   Clean instrument aesthetic. Monochrome + cobalt accent. No frameworks.
   ========================================================================= */
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@300;400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

/* ---- Tokens ------------------------------------------------------------- */

:root {
  color-scheme: light dark;

  --font-sans: 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --c-ok: #047857;
  --c-signal: #b45309;
  --c-alert: #be123c;

  --radius: 4px;
  --radius-sm: 2px;
  --maxw: 1120px;
}

:root,
:root[data-theme="light"] {
  --bg: #fbfbfa;
  --paper: #ffffff;
  --elev: #f4f4f3;
  --ink: #09090b;
  --ink-soft: #3f3f46;
  --muted: #71717a;
  --hairline: rgba(9, 9, 11, 0.08);
  --hairline-strong: rgba(9, 9, 11, 0.16);
  --accent: #1d4ed8;
  --accent-soft: rgba(29, 78, 216, 0.08);
  --accent-ink: #ffffff;
  --chip-bg: rgba(9, 9, 11, 0.04);
  --shadow-1: 0 1px 2px rgba(9, 9, 11, 0.04);
  --shadow-2: 0 1px 3px rgba(9, 9, 11, 0.05), 0 8px 24px -12px rgba(9, 9, 11, 0.08);
}

:root[data-theme="dark"] {
  --bg: #09090b;
  --paper: #101012;
  --elev: #17171a;
  --ink: #f4f4f5;
  --ink-soft: #c4c4c8;
  --muted: #71717a;
  --hairline: rgba(244, 244, 245, 0.08);
  --hairline-strong: rgba(244, 244, 245, 0.18);
  --accent: #60a5fa;
  --accent-soft: rgba(96, 165, 250, 0.14);
  --accent-ink: #09090b;
  --chip-bg: rgba(244, 244, 245, 0.05);
  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-2: 0 1px 3px rgba(0, 0, 0, 0.5), 0 12px 32px -16px rgba(0, 0, 0, 0.6);
}

/* ---- Base --------------------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

html {
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font: 400 15px/1.6 var(--font-sans);
  letter-spacing: -0.003em;
  background: var(--bg);
  color: var(--ink);
  min-height: 100vh;
  padding: 0 2rem 6rem;
  max-width: var(--maxw);
  margin-inline: auto;
}

html.bbd-ready,
html.bbd-ready body,
html.bbd-ready .top-bar,
html.bbd-ready .panel,
html.bbd-ready .card,
html.bbd-ready button,
html.bbd-ready .btn,
html.bbd-ready input,
html.bbd-ready pre,
html.bbd-ready .lumen-toggle,
html.bbd-ready .mode-banner {
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}

::selection { background: var(--accent); color: var(--accent-ink); }

/* ---- Typography --------------------------------------------------------- */

h1, h2, h3, h4 { color: var(--ink); margin: 0; font-family: var(--font-sans); }

h1 {
  font-weight: 600;
  font-size: clamp(2rem, 4vw, 2.6rem);
  line-height: 1.1;
  letter-spacing: -0.028em;
  margin: 0.5rem 0 0.6rem;
}
h1 em { font-style: normal; font-weight: 600; color: var(--ink); }

h2 {
  font-weight: 600;
  font-size: 1.15rem;
  line-height: 1.3;
  letter-spacing: -0.012em;
  margin: 2.6rem 0 1rem;
}

h2.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 2.8rem 0 0.6rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--hairline);
}
h2.section-label::before { content: ""; }

h3 {
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: -0.005em;
  margin: 0 0 0.6rem;
}

p { margin: 0 0 0.9rem; color: var(--ink-soft); }

a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--hairline-strong);
  transition: border-color .15s, color .15s;
}
a:hover { color: var(--accent); border-bottom-color: var(--accent); }

strong { font-weight: 600; color: var(--ink); }

code, kbd {
  font: 500 0.84em/1.4 var(--font-mono);
  background: var(--chip-bg);
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  color: var(--ink);
  border: 1px solid var(--hairline);
}

em { font-style: italic; color: var(--ink-soft); }

.muted { color: var(--muted); font-size: 0.9rem; }
.muted code { font-size: 0.86em; }
.mono { font-family: var(--font-mono); }

/* ---- Top bar ------------------------------------------------------------ */

.top-bar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1.25rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--hairline);
  margin-bottom: 2rem;
  font: 500 0.7rem/1 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.top-bar .tb-left,
.top-bar .tb-right { display: flex; gap: 0.9rem; align-items: center; }
.top-bar .tb-left  { justify-content: flex-start; }
.top-bar .tb-right { justify-content: flex-end; }

.top-bar .tb-id {
  color: var(--ink);
  font-weight: 600;
  letter-spacing: 0.16em;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}
.top-bar .tb-id-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.top-bar .tb-clock { font-variant-numeric: tabular-nums; letter-spacing: 0.06em; }

.top-bar .tb-rec {
  display: none;
  align-items: center;
  gap: 0.45rem;
  color: var(--c-alert);
  font-weight: 600;
}
.top-bar .tb-rec.live { display: inline-flex; }
.top-bar .tb-rec .rec-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--c-alert);
  animation: rec-pulse 1.6s infinite ease-in-out;
}
@keyframes rec-pulse {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0.3; }
}
.top-bar .tb-sep {
  width: 1px; height: 0.85rem;
  background: var(--hairline-strong);
}

/* ---- Theme toggle ------------------------------------------------------- */

.lumen-toggle {
  appearance: none;
  background: var(--elev);
  border: 1px solid var(--hairline);
  border-radius: 999px;
  padding: 2px;
  font: 500 0.62rem/1 var(--font-mono);
  letter-spacing: 0.12em;
  color: var(--muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0;
}
.lumen-toggle::before { content: ""; }
.lumen-toggle .lm {
  padding: 0.32rem 0.65rem;
  border-radius: 999px;
}
.lumen-toggle .sep { display: none; }
[data-theme="light"] .lumen-toggle .lm-day,
[data-theme="dark"]  .lumen-toggle .lm-night {
  background: var(--ink);
  color: var(--bg);
}

/* ---- Hero --------------------------------------------------------------- */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
  gap: 2.5rem;
  margin: 1.5rem 0 3rem;
  align-items: end;
}
.hero .hero-meta {
  font: 500 0.7rem/1.3 var(--font-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.4rem;
}
.hero h1 {
  font-size: clamp(2.2rem, 4.5vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin: 0;
}
.hero .lede {
  font-size: 1rem;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 0;
  align-self: end;
  max-width: 44ch;
}

@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; gap: 1rem; }
}

/* ---- Panels / cards ----------------------------------------------------- */

.panel,
.card,
body > .card {
  background: var(--paper);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem;
  margin: 1rem 0;
  box-shadow: var(--shadow-1);
}
.card { padding: 1.5rem 1.6rem; margin: 1.4rem 0; }

.panel h3:first-child,
.card h3:first-child { margin-top: 0; }

.panel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 2.5rem;
}

/* ---- Registry list ------------------------------------------------------ */

ul.registry,
ul.tests {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--hairline);
}

ul.registry li,
ul.tests li {
  border-bottom: 1px solid var(--hairline);
}

ul.registry li a,
ul.tests li a {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 1rem;
  padding: 0.95rem 0.6rem 0.95rem 0;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
  border-bottom: 0;
  transition: padding .15s ease, background .15s ease;
}
ul.registry li a:hover,
ul.tests li a:hover {
  background: var(--accent-soft);
  padding-left: 0.6rem;
  padding-right: 1rem;
  color: var(--ink);
}
ul.registry li a::after,
ul.tests li a::after {
  content: "→";
  font: 400 1rem/1 var(--font-mono);
  color: var(--muted);
  opacity: 0.4;
  transition: opacity .15s, transform .15s, color .15s;
}
ul.registry li a:hover::after,
ul.tests li a:hover::after {
  opacity: 1;
  color: var(--accent);
  transform: translateX(3px);
}

.tag {
  font: 500 0.6rem/1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.32rem 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--chip-bg);
  color: var(--muted);
  border: 1px solid var(--hairline);
  white-space: nowrap;
}
.tag.tag-free       { color: var(--c-ok);     border-color: color-mix(in srgb, var(--c-ok)     30%, transparent); background: color-mix(in srgb, var(--c-ok)     7%, transparent); }
.tag.tag-enterprise { color: var(--c-signal); border-color: color-mix(in srgb, var(--c-signal) 30%, transparent); background: color-mix(in srgb, var(--c-signal) 7%, transparent); }
.tag.tag-research   { color: var(--accent);   border-color: color-mix(in srgb, var(--accent)   30%, transparent); background: var(--accent-soft); }

/* ---- Params list -------------------------------------------------------- */

.params-list {
  font-size: 0.9rem;
  color: var(--ink-soft);
}
.params-list code { font-size: 0.82em; }
ul.params-list { padding-left: 1.1rem; margin: 0.4rem 0; }
ul.params-list li { margin: 0.18rem 0; }

/* ---- Buttons + inputs --------------------------------------------------- */

.row { display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; }

button,
.btn {
  font: 500 0.84rem/1 var(--font-sans);
  letter-spacing: -0.005em;
  padding: 0.6rem 1rem;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--bg);
  cursor: pointer;
  border-radius: var(--radius);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  transition: background .15s, color .15s, border-color .15s, transform .1s;
}
button:hover:not(:disabled),
.btn:hover:not(:disabled) {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}
button:active:not(:disabled),
.btn:active:not(:disabled) { transform: translateY(1px); }
button:disabled,
.btn:disabled {
  opacity: 1;
  cursor: not-allowed;
  background: transparent;
  color: var(--muted);
  border-color: var(--hairline-strong);
}

button.btn-ghost,
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--hairline-strong);
}
button.btn-ghost:hover:not(:disabled),
.btn-ghost:hover:not(:disabled) {
  background: var(--elev);
  color: var(--ink);
  border-color: var(--ink);
}

input[type="text"],
input[type="search"],
input:not([type]) {
  font: 400 0.92rem/1.4 var(--font-sans);
  letter-spacing: -0.003em;
  background: var(--paper);
  border: 1px solid var(--hairline-strong);
  padding: 0.55rem 0.75rem;
  color: var(--ink);
  outline: none;
  min-width: 280px;
  border-radius: var(--radius);
  transition: border-color .15s, box-shadow .15s;
}
input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
input::placeholder { color: var(--muted); }

/* ---- Log ---------------------------------------------------------------- */

pre {
  font: 500 0.78rem/1.6 var(--font-mono);
  letter-spacing: 0;
  background: var(--elev);
  padding: 0.9rem 1rem;
  margin: 0.6rem 0 1.2rem;
  color: var(--ink-soft);
  border-radius: var(--radius);
  border: 1px solid var(--hairline);
  overflow-x: auto;
  max-height: 480px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}
pre:empty::after {
  content: "waiting for events…";
  color: var(--muted);
  font-style: italic;
}

/* ---- Back link ---------------------------------------------------------- */

.back {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font: 500 0.78rem/1 var(--font-sans);
  letter-spacing: -0.005em;
  color: var(--muted);
  margin: 0.5rem 0 1rem;
  border-bottom: 0;
  transition: color .15s, transform .15s;
}
.back:hover { color: var(--accent); border-bottom: 0; transform: translateX(-2px); }

/* ---- Mode banner -------------------------------------------------------- */

.mode-banner {
  --strip: var(--accent);
  font: 400 0.82rem/1.5 var(--font-sans);
  padding: 0.85rem 1.05rem;
  margin: 1.2rem 0 1.8rem;
  background: var(--paper);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--strip);
  border-radius: var(--radius);
  display: grid;
  gap: 0.3rem;
}
.mode-banner.mode-off      { --strip: var(--c-alert);  }
.mode-banner.mode-expired,
.mode-banner.mode-failed   { --strip: var(--c-signal); }

.mode-banner > div { display: flex; flex-wrap: wrap; align-items: center; gap: 0.45rem; }

.mode-banner strong {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.62rem;
  color: var(--muted);
  margin-right: 0.3rem;
}
.mode-banner code {
  background: var(--chip-bg);
  border: 1px solid var(--hairline);
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  color: var(--ink);
}
.mode-banner a { border-bottom: 0; }
.mode-banner a:hover { color: var(--accent); }
.mode-banner .mode-reset {
  margin-left: auto;
  font: 500 0.62rem/1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.mode-banner .mode-reset:hover { color: var(--accent); }

.rid-copy {
  font: 500 0.6rem/1 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.28rem 0.55rem;
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
  margin: 0 0.3rem;
}
.rid-copy:hover { color: var(--accent); border-color: var(--accent); background: transparent; transform: none; }

/* ---- Runs page ---------------------------------------------------------- */

.controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 0.6rem 0 1.5rem;
}
.controls input { min-width: 320px; flex: 1; }
.controls #count {
  margin-left: auto;
  font: 500 0.7rem/1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.runs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
}
.runs-table th,
.runs-table td {
  padding: 0.65rem 0.8rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--hairline);
}
.runs-table th {
  font: 500 0.62rem/1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  background: transparent;
  border-bottom: 1px solid var(--hairline-strong);
  padding-bottom: 0.55rem;
}
.runs-table tr.row-summary { cursor: pointer; transition: background .12s; }
.runs-table tr.row-summary:hover { background: var(--elev); }
.runs-table tr.row-summary td:first-child { position: relative; padding-left: 1.4rem; }
.runs-table tr.row-summary td:first-child::before {
  content: "›";
  position: absolute;
  left: 0.4rem;
  top: 0.55rem;
  font-family: var(--font-mono);
  color: var(--muted);
  transition: transform .15s, color .15s;
}
.runs-table tr.row-summary.open td:first-child::before {
  transform: rotate(90deg);
  color: var(--accent);
}
.runs-table .rid {
  font: 500 0.7rem/1 var(--font-mono);
  color: var(--muted);
  word-break: break-all;
  margin-top: 0.3rem;
  letter-spacing: 0;
}
.runs-table .ua-cell {
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--ink-soft);
  font: 400 0.8rem/1.4 var(--font-mono);
}

.badge {
  display: inline-block;
  font: 500 0.6rem/1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--chip-bg);
  border: 1px solid var(--hairline);
  color: var(--muted);
  margin-right: 4px;
}
.badge.wd-true  { color: var(--c-alert); border-color: color-mix(in srgb, var(--c-alert) 35%, transparent); background: color-mix(in srgb, var(--c-alert) 10%, transparent); }
.badge.wd-false { color: var(--c-ok);    border-color: color-mix(in srgb, var(--c-ok)    30%, transparent); background: color-mix(in srgb, var(--c-ok)    8%, transparent);  }

.events {
  background: var(--elev);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--hairline);
  font: 500 0.74rem/1.55 var(--font-mono);
  max-height: 480px;
  overflow: auto;
}
.ev {
  padding: 0.25rem 0;
  border-bottom: 1px solid var(--hairline);
  display: grid;
  grid-template-columns: auto auto 1fr;
  gap: 0.6rem;
  align-items: baseline;
}
.ev:last-child { border-bottom: 0; }
.ev .muted { font-size: inherit; }
.ev-name { color: var(--accent); min-width: 160px; font-weight: 600; }

/* ---- Field sightings (homepage deployment grid) ------------------------ */

.deployments {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0.9rem;
  margin: 1.2rem 0 0;
}
.dep {
  background: var(--paper);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 1rem 1.15rem 1.05rem;
  box-shadow: var(--shadow-1);
}
.dep h3 {
  font: 500 0.68rem/1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.8rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--hairline);
}
.dep h3 a {
  color: var(--ink);
  border-bottom: 0;
  font-weight: 500;
  letter-spacing: 0.14em;
}
.dep h3 a:hover { color: var(--accent); }
.dep ul { list-style: none; padding: 0; margin: 0; }
.dep li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.7rem;
  align-items: baseline;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--hairline);
  font-size: 0.84rem;
}
.dep li:last-child { border-bottom: 0; }
.dep li a {
  font: 500 0.84rem/1.3 var(--font-mono);
  color: var(--ink);
  border-bottom: 0;
  letter-spacing: -0.005em;
}
.dep li a::after {
  content: " ↗";
  font-size: 0.78em;
  color: var(--muted);
  opacity: 0.6;
}
.dep li a:hover { color: var(--accent); }
.dep li .muted {
  font-size: 0.72rem;
  text-align: right;
  color: var(--muted);
}
.dep li .muted code { font-size: 0.92em; }

/* ---- Footer ------------------------------------------------------------- */

.foot {
  margin-top: 4rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--hairline);
  font: 500 0.66rem/1.4 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
}
.foot code { font-size: 0.92em; text-transform: none; letter-spacing: 0; }

/* ---- Entrance animation (single, subtle) -------------------------------- */

@keyframes enter {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: none; }
}
body > *:not(script) {
  animation: enter .35s cubic-bezier(.2, .8, .2, 1) both;
}
body > .top-bar    { animation-duration: .25s; }
body > .hero       { animation-delay: .04s; }
body > .panel-grid { animation-delay: .07s; }
body > h2          { animation-delay: .09s; }
body > ul.registry { animation-delay: .11s; }
@media (prefers-reduced-motion: reduce) {
  body > *, body > *::before, body > *::after { animation: none !important; transition: none !important; }
}

/* ---- Vendor widget area on test pages ---------------------------------- */

#cf-turnstile, #rc, .h-captcha, .frc-captcha { margin: 0.4rem 0 0.2rem; }

/* ---- Small screens ----------------------------------------------------- */

@media (max-width: 640px) {
  body { padding: 0 1rem 4rem; }
  .top-bar { grid-template-columns: 1fr auto; gap: 0.5rem; font-size: 0.62rem; }
  .top-bar .tb-center { display: none; }
  .runs-table .ua-cell { max-width: 180px; }
  .controls input { min-width: 0; }
}