:root {
  --bg: #f2f0e9;
  --bg-2: #e8e5dc;
  --bg-3: #dedbd1;
  --line: #cac8bf;
  --line-2: #aaa9a1;
  --fg: #191b19;
  --fg-dim: #6b6d67;
  --fg-faint: #85877f;
  --accent: #178f52;
  --ok: #178f52;
  --warn: #9b6519;
  --fail: #b34d42;
  --info: #27799b;
  --deep: #111411;
  --code-bg: #111411;
  --code-fg: #d4d8d1;
  --grid-line: rgba(23,143,82,.085);
  --mono: ui-monospace, "Cascadia Mono", "SF Mono", Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #101310;
  --bg-2: #171b17;
  --bg-3: #202520;
  --line: #333832;
  --line-2: #4b524a;
  --fg: #eceee7;
  --fg-dim: #92978f;
  --fg-faint: #687068;
  --accent: #53d484;
  --ok: #53d484;
  --warn: #e0af68;
  --fail: #f7768e;
  --info: #7dcfff;
  --deep: #080a08;
  --code-bg: #080a08;
  --code-fg: #d4d8d1;
  --grid-line: rgba(83,212,132,.055);
  color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.55;
  min-height: 100vh;
}

code {
  font-family: var(--mono);
  font-size: .92em;
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0 4px;
  color: var(--code-fg);
}

b { color: var(--fg); font-weight: 600; }

/* ------------------------------------------------------------------ chrome */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 17px max(24px, calc((100vw - 1240px) / 2 + 24px));
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(14px);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand { display: flex; align-items: center; gap: 13px; min-width: 0; }
.site-brand { color:var(--fg);font:600 18px var(--mono);text-decoration:none;letter-spacing:-1px;white-space:nowrap }
.site-brand>span:first-child { color:var(--accent) }.site-brand>span:last-child { color:var(--fg-dim) }
.tool-divider { color:var(--line-2);font:300 25px var(--mono) }
.topbar h1 { font-size: 15px; margin: 0; letter-spacing: .2px; }
.topbar p { margin: 1px 0 0; font-size: 12px; color: var(--fg-dim); }
.topbar-actions { display:flex;align-items:center;gap:8px;white-space:nowrap }
.local-badge { color:var(--fg-dim);font:600 10px var(--mono);letter-spacing:.08em;text-transform:uppercase;margin-right:5px }
.local-badge i { display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 15%,transparent);margin-right:8px }
.theme-toggle { width:39px;height:39px;padding:0;border-radius:0 }

main { max-width: 1240px; margin: 0 auto; padding: 58px 24px 32px;position:relative;isolation:isolate }
main::before { content:"";position:absolute;z-index:-1;top:0;left:50%;width:100vw;height:620px;transform:translateX(-50%);background-image:linear-gradient(var(--grid-line) 1px,transparent 1px),linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);background-size:40px 40px;mask-image:radial-gradient(ellipse 78% 68% at 50% 34%,#000,transparent 78%) }

footer {
  max-width: 1240px;
  margin: 0 auto;
  padding: 8px 24px 40px;
  color: var(--fg-faint);
  font-size: 12px;
  display:flex;
  justify-content:space-between;
  gap:24px;
  font-family:var(--mono);
}
footer a { color:var(--accent);text-decoration:none }

button {
  font: inherit;
  border-radius: 0;
  padding: 8px 16px;
  border: 1px solid var(--line-2);
  background: var(--bg-3);
  color: var(--fg);
  cursor: pointer;
}
button:hover { border-color: var(--accent); background: var(--bg-2); }
button.primary { background: var(--fg); border-color: var(--fg); color: var(--bg); font-weight: 700; }
button.primary:hover { background: var(--accent); border-color: var(--accent); color:#fff; }
button.ghost { background: transparent; }

.note { color: var(--fg-faint); font-size: 12px; }

/* ------------------------------------------------------------------ input */

.dropzone { position: relative; }
.dropzone.over { outline: 2px dashed var(--accent); outline-offset: 6px; }
.dropzone.over .drop-hint { display: grid; }

.drop-hint {
  display: none;
  position: absolute; inset: 0;
  place-items: center;
  background: color-mix(in srgb,var(--bg) 88%,transparent);
  color: var(--accent);
  font-weight: 600;
  pointer-events: none;
}

#raw {
  width: 100%;
  min-height: 380px;
  resize: vertical;
  padding: 16px;
  border-radius: 0;
  border: 1px solid var(--line);
  background: color-mix(in srgb,var(--bg-2) 94%,transparent);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.6;
  white-space: pre;
  overflow-wrap: normal;
  overflow-x: auto;
}
#raw:focus { outline: none; border-color: var(--line-2); }
#raw::placeholder { color: var(--fg-faint); }

.input-actions { display: flex; align-items: center; gap: 10px; margin-top: 14px; flex-wrap: wrap; }

/* ---------------------------------------------------------------- summary */

.summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 0;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 18px;
}
/* Borders rather than grid gaps: an incomplete last row then reads as empty
   panel space instead of a hole the container colour shows through. */
.sum-cell {
  padding: 11px 14px;
  min-width: 0;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.sum-cell:last-child { grid-column: 1 / -1; border-right: none; border-bottom: none; }
.sum-cell .k { font-size: 10.5px; letter-spacing: .09em; text-transform: uppercase; color: var(--fg-faint); }
.sum-cell .v { font-size: 13px; margin-top: 3px; word-break: break-word; }
.sum-cell .v.mono { font-family: var(--mono); font-size: 12px; }

.verdicts { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 5px; }
.badge {
  font-family: var(--mono);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 20px;
  border: 1px solid;
  white-space: nowrap;
}
.badge.ok   { color: var(--ok);   border-color: #3d5a2e; background: #1a2417; }
.badge.warn { color: var(--warn); border-color: #6b5325; background: #241f14; }
.badge.fail { color: var(--fail); border-color: #6b2f38; background: #26161b; }
.badge.info { color: var(--info); border-color: #2b4f63; background: #131f27; }
.badge.none { color: var(--fg-faint); border-color: var(--line-2); background: var(--bg-3); }

/* ------------------------------------------------------------------- tabs */

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 20px; }
.tab {
  border: none; background: none; border-radius: 0;
  border-bottom: 2px solid transparent;
  color: var(--fg-dim);
  padding: 9px 15px;
}
.tab:hover { background: none; color: var(--fg); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab .pill {
  display: inline-block;
  margin-left: 7px;
  font-size: 10.5px;
  font-family: var(--mono);
  padding: 0 6px;
  border-radius: 9px;
  background: var(--fail);
  color: #1a0d10;
  font-weight: 700;
}

/* -------------------------------------------------------------- diagnosis */

.finding {
  border: 1px solid var(--line);
  border-left: 3px solid var(--line-2);
  border-radius: 8px;
  background: var(--bg-2);
  padding: 13px 16px;
  margin-bottom: 10px;
}
.finding.fail { border-left-color: var(--fail); }
.finding.warn { border-left-color: var(--warn); }
.finding.ok   { border-left-color: var(--ok); }
.finding.info { border-left-color: var(--info); }

.finding h3 { margin: 0 0 5px; font-size: 13.5px; display: flex; align-items: center; gap: 9px; }
.finding .icon { font-family: var(--mono); font-size: 12px; }
.finding.fail .icon { color: var(--fail); }
.finding.warn .icon { color: var(--warn); }
.finding.ok   .icon { color: var(--ok); }
.finding.info .icon { color: var(--info); }
.finding p { margin: 0; color: var(--fg-dim); }
.finding .fix {
  margin-top: 9px;
  padding: 8px 11px;
  border-radius: 6px;
  background: var(--bg-3);
  border: 1px solid var(--line);
  color: var(--fg);
  font-size: 12.5px;
}
.finding .fix::before { content: "Fix "; color: var(--ok); font-weight: 700; font-size: 10.5px; letter-spacing: .09em; }

/* aggregated to-do list at the top of the diagnosis */
.actions {
  border: 1px solid var(--line-2);
  border-radius: 8px;
  background: var(--bg-2);
  padding: 6px 18px 6px 6px;
  margin-bottom: 22px;
}
.actions ol { margin: 0; padding-left: 30px; }
.actions li { padding: 9px 0; border-top: 1px solid var(--line); }
.actions li:first-child { border-top: none; }
.actions li::marker { color: var(--accent); font-weight: 700; font-family: var(--mono); font-size: 12px; }
.actions .from {
  display: block; margin-top: 5px;
  font-size: 11px; color: var(--fg-faint);
}
.actions .from::before { content: "from: "; }

.fix.steps { padding: 4px 12px 4px 4px; }
.fix.steps::before { content: none; }
.fix.steps ol { margin: 0; padding-left: 26px; }
.fix.steps li { padding: 5px 0; }
.fix.steps li::marker { color: var(--ok); font-family: var(--mono); font-size: 11px; }

.record {
  font-family: var(--mono); font-size: 12px;
  background: var(--code-bg); border: 1px solid var(--line-2); border-radius: 5px;
  padding: 8px 11px; margin: 7px 0 2px;
  color: var(--ok); overflow-x: auto; white-space: pre;
}

.section-title {
  font-size: 11px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--fg-faint); margin: 26px 0 10px;
}
.section-title:first-child { margin-top: 0; }

/* ------------------------------------------------------------------- flow */

.flow { position: relative; padding-left: 30px; }
.flow::before {
  content: ""; position: absolute; left: 9px; top: 12px; bottom: 12px;
  width: 2px; background: var(--line-2);
}

.hop {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-2);
  padding: 12px 15px;
  margin-bottom: 4px;
}
.hop::before {
  content: ""; position: absolute; left: -25px; top: 17px;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--accent);
}
.hop.internal::before { border-color: var(--fg-faint); }
.hop.origin::before { background: var(--ok); border-color: var(--ok); }
.hop.final::before { background: var(--accent); }

.hop-head { display: flex; align-items: baseline; gap: 9px; flex-wrap: wrap; }
.hop-n { font-family: var(--mono); font-size: 11px; color: var(--fg-faint); }
.hop-role { font-size: 10.5px; letter-spacing: .07em; text-transform: uppercase; color: var(--accent); }
.hop-time { margin-left: auto; font-family: var(--mono); font-size: 11.5px; color: var(--fg-faint); }

.hop-route { font-family: var(--mono); font-size: 12.5px; margin-top: 7px; line-height: 1.7; word-break: break-word; }
.hop-route .host { color: var(--fg); }
.hop-route .arrow { color: var(--fg-faint); margin: 0 7px; }
.hop-route .ip { color: var(--info); }
.hop-meta { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 8px; }
.chip {
  font-family: var(--mono); font-size: 10.5px;
  padding: 1px 7px; border-radius: 4px;
  background: var(--bg-3); border: 1px solid var(--line); color: var(--fg-dim);
}
.chip.good { color: var(--ok); border-color: #3d5a2e; }
.chip.bad { color: var(--fail); border-color: #6b2f38; }
.chip.plat { color: var(--accent); border-color: #33436b; }

.gap {
  display: flex; align-items: center; gap: 9px;
  margin: 0 0 4px -30px; padding-left: 30px;
  height: 26px; font-family: var(--mono); font-size: 11px; color: var(--fg-faint);
}
.gap .bar { height: 3px; border-radius: 2px; background: var(--line-2); min-width: 3px; }
.gap.slow .bar { background: var(--warn); }
.gap.slow { color: var(--warn); }

/* ------------------------------------------------- per-hop checks & events */

.events { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--line-2); }
.event {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--mono); font-size: 11px;
  padding: 3px 9px; border-radius: 5px;
  border: 1px solid var(--line); background: var(--bg-3); cursor: help;
}
.event .ev-k { color: var(--fg-faint); letter-spacing: .04em; }
.event .ev-v { color: var(--fg); }
.event .ev-tag { color: var(--fg-faint); font-size: 10px; border-left: 1px solid var(--line-2); padding-left: 7px; }
.event.pass { border-color: #3d5a2e; background: #1a2417; }
.event.pass .ev-v { color: var(--ok); }
.event.bad { border-color: #6b2f38; background: #26161b; }
.event.bad .ev-v { color: var(--fail); }
.event.meh { border-color: #6b5325; background: #241f14; }
.event.meh .ev-v { color: var(--warn); }

.waypoint {
  margin: 6px 0 6px -30px; padding: 7px 14px 7px 30px;
  font-family: var(--mono); font-size: 11.5px;
  border-radius: 6px; cursor: help;
}
.waypoint.out { color: var(--warn); background: #241f1408; border: 1px dashed #6b5325; }
.waypoint.in { color: var(--info); background: #131f2708; border: 1px dashed #2b4f63; }

.hint { color: var(--fg-faint); text-transform: none; letter-spacing: 0; font-style: italic; }
.term {
  border-bottom: 1px dotted currentColor;
  cursor: help;
  text-underline-offset: 3px;
}
.term:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

/* -------------------------------------------------------------- ARC chain */

.arc-chain { display: flex; flex-direction: column; gap: 0; }
.arc-set { border: 1px solid var(--line); border-radius: 8px; background: var(--bg-2); padding: 11px 14px; }
.arc-set.good { border-left: 3px solid var(--ok); }
.arc-set.bad { border-left: 3px solid var(--fail); }
.arc-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.arc-i { font-family: var(--mono); font-size: 11px; color: var(--fg-faint); cursor: help; }
.arc-d { font-family: var(--mono); font-size: 13px; color: var(--fg); }
.arc-verdicts { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.arc-link { color: var(--fg-faint); font-family: var(--mono); padding: 2px 0 2px 18px; cursor: help; }

/* --------------------------------------------------------------- tooltips */

.tip {
  position: fixed;
  z-index: 100;
  display: none;
  max-width: 380px;
  padding: 11px 14px;
  border-radius: 8px;
  border: 1px solid var(--line-2);
  background: var(--code-bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 12.5px;
  line-height: 1.55;
  box-shadow: 0 10px 32px rgba(0, 0, 0, .6);
  opacity: 0;
  transition: opacity .12s ease;
  pointer-events: none;
}
.tip.show { opacity: 1; }
.tip code { background: var(--deep); }

.hop-route .host, .hop-route .ip, .chip, .hop-role, .hop-time, .hop-n, .gap { cursor: help; }

/* ------------------------------------------------------------------- auth */

.auth-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px; margin-bottom: 20px; }
.auth-card { border: 1px solid var(--line); border-radius: 8px; background: var(--bg-2); padding: 14px 16px; }
.auth-card h3 { margin: 0 0 4px; font-size: 12px; letter-spacing: .09em; text-transform: uppercase; color: var(--fg-faint); }
.auth-card .res { font-family: var(--mono); font-size: 19px; margin-bottom: 6px; }
.auth-card .res.pass, .auth-card .res.ok { color: var(--ok); }
.auth-card .res.fail, .auth-card .res.softfail, .auth-card .res.permerror { color: var(--fail); }
.auth-card .res.none, .auth-card .res.neutral, .auth-card .res.temperror, .auth-card .res.unverified { color: var(--warn); }
.auth-card p { margin: 0; font-size: 12.5px; color: var(--fg-dim); }

.kvtable { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.kvtable td { padding: 6px 10px; border-top: 1px solid var(--line); vertical-align: top; }
.kvtable tr:first-child td { border-top: none; }
.kvtable .k { font-family: var(--mono); color: var(--accent); white-space: nowrap; width: 1%; }
.kvtable .v { font-family: var(--mono); color: var(--fg); word-break: break-all; }
.kvtable .n { color: var(--fg-dim); font-size: 12px; }

.box { border: 1px solid var(--line); border-radius: 8px; background: var(--bg-2); padding: 4px 6px; margin-bottom: 14px; }

/* ---------------------------------------------------------------- headers */

.headers-toolbar { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; flex-wrap: wrap; }
#filter {
  flex: 1; min-width: 200px; max-width: 340px;
  padding: 7px 12px; border-radius: 7px;
  border: 1px solid var(--line); background: var(--bg-2); color: var(--fg);
  font-family: var(--mono); font-size: 12.5px;
}
#filter:focus { outline: none; border-color: var(--line-2); }
.chk { display: flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--fg-dim); cursor: pointer; }

.headers-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 400px); gap: 18px; align-items: start; }
@media (max-width: 900px) { .headers-split { grid-template-columns: 1fr; } }

.header-list { border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: var(--bg-2); }

.hrow {
  display: block; width: 100%; text-align: left;
  border: none; border-radius: 0; background: none;
  border-left: 3px solid transparent;
  border-bottom: 1px solid var(--line);
  padding: 8px 13px;
  cursor: pointer;
  font-family: var(--mono); font-size: 12.5px;
}
.hrow:last-child { border-bottom: none; }
.hrow:hover { background: var(--bg-3); }
.hrow.active { background: var(--bg-3); border-left-color: var(--accent); }
.hrow .hname { color: var(--accent); }
.hrow .hval { color: var(--fg-dim); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: block; }
.hrow .dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; margin-right: 7px; vertical-align: middle; }

.header-detail {
  position: sticky; top: 88px;
  border: 1px solid var(--line); border-radius: 8px;
  background: var(--bg-2); padding: 16px;
  max-height: calc(100vh - 120px); overflow-y: auto;
}
.detail-empty { color: var(--fg-faint); text-align: center; padding: 34px 12px; font-size: 13px; }
.detail-head { display: flex; align-items: baseline; gap: 9px; flex-wrap: wrap; margin-bottom: 3px; }
.detail-head h2 { margin: 0; font-size: 14.5px; font-family: var(--mono); color: var(--accent); word-break: break-all; }
.tag {
  font-size: 10px; letter-spacing: .06em; text-transform: uppercase;
  padding: 1px 7px; border-radius: 4px;
  border: 1px solid var(--line-2); color: var(--fg-faint); background: var(--bg-3);
}
.detail-summary { color: var(--fg); margin: 8px 0; }
.detail-detail { color: var(--fg-dim); font-size: 12.5px; margin: 8px 0 14px; }
.detail-raw {
  font-family: var(--mono); font-size: 11.5px;
  background: var(--code-bg); border: 1px solid var(--line); border-radius: 6px;
  padding: 9px 11px; margin: 10px 0;
  white-space: pre-wrap; word-break: break-all; color: var(--fg-dim);
  max-height: 190px; overflow: auto;
}
.detail-sub { font-size: 10.5px; letter-spacing: .09em; text-transform: uppercase; color: var(--fg-faint); margin: 14px 0 6px; }

.empty { color: var(--fg-faint); padding: 26px; text-align: center; }

@media (max-width: 760px) {
  .topbar { align-items:flex-start;padding:14px 16px }
  .brand { align-items:flex-start }
  .site-brand,.tool-divider,.topbar p,.local-badge { display:none }
  .topbar-actions { margin-left:auto }
  main { padding:32px 15px 24px }
  footer { padding-inline:15px;flex-direction:column }
  #raw { min-height:460px }
  .tabs { overflow-x:auto }
  .tab { white-space:nowrap }
}