:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #f0f2f5;
  --border: #e2e6ea;
  --text: #1b2330;
  --muted: #5b6573;
  --primary: #3b5bdb;
  --primary-ink: #ffffff;
  --good: #1f9d57;
  --good-bg: #e7f6ee;
  --bad: #d63a3a;
  --bad-bg: #fdecec;
  --warn: #b8860b;
  --warn-bg: #fbf3df;
  --info: #2f6feb;
  --info-bg: #e8f0fe;
  --danger: #b42318;
  --danger-bg: #fff1f0;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(20, 30, 50, .06), 0 6px 24px rgba(20, 30, 50, .06);
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1420; --surface: #161c2b; --surface-2: #1d2435; --border: #2a3346;
    --text: #e7ecf3; --muted: #97a2b4; --primary: #6b8afd; --primary-ink: #0b1020;
    --good: #46c987; --good-bg: #11301f; --bad: #f0686a; --bad-bg: #34161a;
    --warn: #e0b252; --warn-bg: #33290f; --info: #7aa2ff; --info-bg: #16223c;
    --danger: #ff8a82; --danger-bg: #351818;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 30px rgba(0,0,0,.35);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.site-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; border-bottom: 1px solid var(--border);
  background: var(--surface); position: sticky; top: 0; z-index: 10;
}
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--text); text-decoration: none; font-size: 18px; letter-spacing: -.2px; }
.brand-mark { color: var(--primary); }
.brand strong { color: var(--primary); font-weight: 800; }
.site-nav { display: inline-flex; align-items: center; gap: 4px; margin-left: auto; }
.site-nav a {
  color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 600;
  padding: 7px 10px; border-radius: 8px;
}
.site-nav a:hover, .site-nav a:focus-visible { color: var(--text); background: var(--surface-2); outline: 0; }
.container { max-width: 1080px; margin: 0 auto; padding: 28px 20px 60px; }
.intro { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 22px; }
.intro h1 { font-size: 28px; margin: 0 0 6px; letter-spacing: -.5px; }
.intro p { color: var(--muted); margin: 0; max-width: 62ch; }
.eyebrow {
  margin: 0 0 6px; color: var(--primary); font-size: 12px; font-weight: 800;
  letter-spacing: .08em; text-transform: uppercase;
}
.status-strip { display: inline-flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
.status-strip span {
  padding: 5px 9px; border: 1px solid var(--border); border-radius: 999px;
  color: var(--muted); background: var(--surface); font-size: 12px; font-weight: 700;
}

.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; }
.checker-grid { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 16px; align-items: stretch; }
.format-help {
  padding: 14px; border-radius: 8px; background: var(--surface-2); border: 1px solid var(--border);
}
.format-help h2 { margin: 0 0 12px; font-size: 17px; letter-spacing: -.2px; }
.format-help dl { margin: 0; display: grid; gap: 8px; }
.format-help dt { color: var(--muted); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; }
.format-help dd { margin: 0 0 4px; }
.format-help code {
  display: inline-block; max-width: 100%; padding: 4px 7px; border-radius: 6px;
  background: var(--surface); border: 1px solid var(--border); font-family: var(--mono);
  font-size: 12px; overflow-wrap: anywhere;
}
.format-help p { margin: 12px 0 0; color: var(--muted); font-size: 13px; }
.checker-input { min-width: 0; }
.textarea-label { display: block; margin: 0 0 7px; color: var(--muted); font-size: 13px; font-weight: 700; }
textarea#proxies {
  width: 100%; min-height: 190px; resize: vertical; padding: 12px 14px;
  border: 1px solid var(--border); border-radius: 8px; background: var(--surface-2);
  color: var(--text); font-family: var(--mono); font-size: 13px; line-height: 1.6;
}
textarea#proxies:focus { outline: 2px solid var(--primary); outline-offset: 1px; border-color: var(--primary); }

.controls { display: flex; align-items: flex-end; gap: 12px; margin-top: 14px; flex-wrap: wrap; }
.field { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
.field select { padding: 9px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--text); font-size: 14px; }
.field input:disabled { opacity: .62; cursor: not-allowed; }
.spacer { flex: 1 1 auto; }

.btn { font: inherit; font-size: 14px; font-weight: 600; padding: 10px 16px; border-radius: 8px; border: 1px solid transparent; cursor: pointer; transition: background .12s, border-color .12s, opacity .12s; }
.btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn-primary { background: var(--primary); color: var(--primary-ink); }
.btn-primary:hover { filter: brightness(1.05); }
.btn-primary:disabled { opacity: .55; cursor: not-allowed; }
.btn-ghost { background: transparent; color: var(--muted); border-color: var(--border); }
.btn-ghost:hover { color: var(--text); border-color: var(--muted); }
.btn-sm { padding: 6px 11px; font-size: 13px; background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-sm:hover { border-color: var(--muted); }
.btn-danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 35%, var(--border)); }
.btn-danger:hover { background: var(--danger-bg); border-color: var(--danger); }

.progress-section { margin-top: 20px; }
.progress-track { height: 10px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 999px; overflow: hidden; }
.progress-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--primary), #6b8afd); transition: width .25s ease; }
.status-line { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 10px; flex-wrap: wrap; }
#statusMsg { color: var(--muted); font-size: 14px; }
.counters { display: inline-flex; gap: 8px; }
.chip { font-size: 13px; padding: 3px 10px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--border); }
.chip b { font-variant-numeric: tabular-nums; }
.chip-good { color: var(--good); } .chip-bad { color: var(--bad); }

.results { margin-top: 24px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.tabs { display: flex; align-items: center; gap: 4px; padding: 8px 10px; border-bottom: 1px solid var(--border); background: var(--surface); }
.tab { font: inherit; font-size: 14px; font-weight: 600; padding: 7px 12px; border: 0; background: transparent; color: var(--muted); border-radius: 8px; cursor: pointer; }
.tab.is-active { background: var(--surface-2); color: var(--text); }
.badge { display: inline-block; min-width: 18px; padding: 1px 6px; margin-left: 4px; font-size: 12px; border-radius: 999px; background: var(--border); color: var(--text); font-variant-numeric: tabular-nums; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th { text-align: left; padding: 10px 12px; color: var(--muted); font-weight: 600; border-bottom: 1px solid var(--border); white-space: nowrap; position: sticky; top: 0; background: var(--surface); }
tbody td { padding: 9px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tbody tr:hover { background: var(--surface-2); }
.col-check { width: 34px; text-align: center; }
.mono { font-family: var(--mono); }
.empty { color: var(--muted); text-align: center; padding: 26px; margin: 0; }

.pill { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.pill-elite { color: var(--good); background: var(--good-bg); }
.pill-anonymous { color: var(--info); background: var(--info-bg); }
.pill-transparent { color: var(--warn); background: var(--warn-bg); }
.pill-unknown { color: var(--muted); background: var(--surface-2); }
.risk-low { color: var(--good); } .risk-medium { color: var(--warn); } .risk-high { color: var(--bad); } .risk-unknown { color: var(--muted); }

.alert { margin-top: 18px; padding: 12px 14px; border-radius: 8px; background: var(--bad-bg); color: var(--bad); border: 1px solid color-mix(in srgb, var(--bad) 30%, transparent); font-size: 14px; }

.advanced { margin-top: 14px; border-top: 1px solid var(--border); padding-top: 12px; }
.advanced summary { cursor: pointer; color: var(--muted); font-size: 14px; font-weight: 600; }
.adv-fields { display: flex; gap: 12px; margin-top: 12px; flex-wrap: wrap; }
.field.grow { flex: 1 1 240px; }
.field input { width: 100%; padding: 9px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--text); font-size: 14px; }
.field input:focus { outline: 2px solid var(--primary); outline-offset: 1px; border-color: var(--primary); }
.field small { color: var(--muted); font-weight: 400; }

.site-footer { border-top: 1px solid var(--border); color: var(--muted); font-size: 13px; text-align: center; padding: 22px 20px; }
.site-footer p { margin: 0 auto; max-width: 70ch; }
.foot-nav { margin-bottom: 8px; }
.foot-nav a, .text-link { color: var(--primary); text-decoration: none; font-weight: 700; }
.foot-nav a:hover, .text-link:hover { text-decoration: underline; }

.api-console { margin-top: 42px; }
.api-console-page { margin-top: 0; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 14px; }
.section-head h1 { margin: 0; font-size: 30px; letter-spacing: -.45px; }
.section-head h2 { margin: 0; font-size: 24px; letter-spacing: -.35px; }
.section-head p:last-child { color: var(--muted); margin: 0; max-width: 46ch; }
.api-layout { display: grid; grid-template-columns: minmax(0, .9fr) minmax(360px, 1.1fr); gap: 16px; align-items: start; }
.api-doc-panel, .api-workbench {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 16px;
}
.endpoint-list { display: grid; gap: 10px; }
.endpoint-list article {
  display: grid; grid-template-columns: auto 1fr; column-gap: 10px; row-gap: 3px;
  padding: 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface-2);
}
.endpoint-list code { font-family: var(--mono); font-size: 13px; align-self: center; overflow-wrap: anywhere; }
.endpoint-list p { grid-column: 2; color: var(--muted); margin: 0; font-size: 13px; }
.method {
  align-self: start; border-radius: 6px; padding: 2px 6px; font-size: 11px; font-weight: 800;
  font-family: var(--mono); line-height: 1.6;
}
.method-get { color: var(--info); background: var(--info-bg); }
.method-post { color: var(--good); background: var(--good-bg); }
.code-sample {
  margin: 14px 0 10px; padding: 12px; overflow-x: auto; border-radius: 8px;
  background: #111827; color: #e5e7eb; font-size: 12px; line-height: 1.55;
}
.code-sample code { font-family: var(--mono); }
.api-store-note {
  margin-bottom: 12px; padding: 9px 10px; border-radius: 8px;
  background: var(--info-bg); color: var(--info); font-size: 13px; font-weight: 700;
}
.api-store-note.is-warning { color: var(--warn); background: var(--warn-bg); }
.api-form, .lookup-form { display: flex; align-items: flex-end; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.api-key-box {
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
  margin: 12px 0; padding: 11px; border-radius: 8px; border: 1px solid var(--good);
  background: var(--good-bg);
}
.api-key-box code { font-family: var(--mono); color: var(--text); overflow-wrap: anywhere; }
.mini-label { display: block; color: var(--muted); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; }
.api-actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 16px; }
.api-output {
  min-height: 92px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface-2);
  padding: 12px; font-family: var(--mono); font-size: 12px; line-height: 1.55; overflow: auto;
}
.api-output p { margin: 0; color: var(--muted); font-family: inherit; }
.api-output pre { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.api-output .ok { color: var(--good); font-family: inherit; margin: 0 0 6px; }
.api-output .bad { color: var(--bad); font-family: inherit; margin: 0 0 6px; }

.tools-shell .panel + .panel { margin-top: 18px; }
.tool-form { display: flex; align-items: flex-end; gap: 12px; flex-wrap: wrap; }
.tool-form .field:not(.grow) { min-width: 130px; }
.tool-result h2 { margin: 0 0 10px; font-size: 18px; letter-spacing: -.2px; }
.result-summary {
  display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 12px;
  color: var(--muted); font-size: 13px;
}
.result-summary span {
  padding: 6px 9px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface-2);
}
.result-summary b { color: var(--text); font-weight: 700; overflow-wrap: anywhere; }
.ip-grid {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-bottom: 18px;
}
.info-panel { min-height: 132px; }
.info-panel strong {
  display: block; margin: 8px 0 8px; font-size: 18px; line-height: 1.25; overflow-wrap: anywhere;
}
.info-panel .big-mono { font-family: var(--mono); font-size: 22px; }
.info-panel p { margin: 0; color: var(--muted); font-size: 13px; overflow-wrap: anywhere; }
.header-output {
  min-height: 116px; margin: 0; white-space: pre-wrap; overflow-wrap: anywhere;
  font-family: var(--mono); font-size: 12px; line-height: 1.55; color: var(--text);
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: 12px;
}

.prose { max-width: 820px; }
.prose h1 { font-size: 30px; letter-spacing: -.5px; margin: 0 0 14px; }
.prose h2 { margin: 26px 0 8px; font-size: 20px; }
.prose p, .prose li { color: var(--muted); }
.prose a { color: var(--primary); font-weight: 700; text-decoration: none; }
.prose a:hover { text-decoration: underline; }
.prose pre {
  padding: 14px; border-radius: 8px; background: #111827; color: #e5e7eb; overflow-x: auto;
}
.prose code { font-family: var(--mono); }
.guide-list { padding-left: 20px; }
.tool-notes {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 28px;
}
.tool-notes article {
  border-top: 1px solid var(--border); padding-top: 16px;
}
.tool-notes h2 { margin: 0 0 6px; font-size: 18px; letter-spacing: -.25px; }
.tool-notes p { color: var(--muted); margin: 0; }

@media (max-width: 560px) {
  .site-header { align-items: flex-start; gap: 10px; flex-direction: column; }
  .site-nav { width: 100%; overflow-x: auto; padding-bottom: 2px; }
  .intro { align-items: flex-start; flex-direction: column; }
  .intro h1 { font-size: 23px; }
  .checker-grid { grid-template-columns: 1fr; }
  .controls { align-items: stretch; }
  .field, .field select { width: 100%; }
  .btn-primary { width: 100%; }
  .section-head { align-items: flex-start; flex-direction: column; }
  .api-layout { grid-template-columns: 1fr; }
  .tool-form { align-items: stretch; }
  .tool-form .field, .tool-form .btn { width: 100%; }
  .ip-grid { grid-template-columns: 1fr; }
  .api-form, .lookup-form { align-items: stretch; }
  .api-form .btn, .lookup-form .btn { width: 100%; }
  .api-key-box { align-items: stretch; flex-direction: column; }
  .tool-notes { grid-template-columns: 1fr; }
}