:root {
  color-scheme: dark;
  --bg: #09110f;
  --panel: #111d19;
  --panel-2: #172620;
  --line: #294238;
  --text: #edf7f1;
  --muted: #91aa9e;
  --green: #65f29f;
  --green-dark: #163d29;
  --amber: #ffd166;
  --red: #ff7b72;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 75% 5%, rgba(101, 242, 159, .08), transparent 28rem),
    linear-gradient(180deg, #0b1512, var(--bg));
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}
main { width: min(1440px, 94vw); margin: 0 auto; padding: 42px 0 60px; }
header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 26px; }
h1 { font-family: system-ui, sans-serif; font-size: clamp(2.7rem, 6vw, 5.8rem); letter-spacing: -.07em; line-height: .92; margin: 4px 0 16px; }
h2 { font-family: system-ui, sans-serif; letter-spacing: -.03em; margin: 4px 0 18px; }
.eyebrow, .section-label { color: var(--green); font-size: .72rem; letter-spacing: .15em; text-transform: uppercase; margin: 0; }
.lede, .muted { color: var(--muted); }
.lede { font-family: system-ui, sans-serif; font-size: 1.05rem; }
.panel { border: 1px solid var(--line); background: rgba(17, 29, 25, .92); border-radius: 14px; }
.pill { padding: 9px 13px; border-radius: 999px; border: 1px solid var(--line); font-size: .78rem; }
.pill.online { color: var(--green); background: var(--green-dark); border-color: #39744f; }
.pill.error { color: var(--red); }
.connect-panel { padding: 22px; display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; margin-bottom: 18px; }
.connection-controls { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 12px; }
button, input, select, textarea {
  border: 1px solid var(--line); border-radius: 7px; background: #0c1713; color: var(--text);
  font: inherit; padding: 10px 12px;
}
button { background: var(--green); color: #06200f; border-color: var(--green); font-weight: 800; cursor: pointer; }
button:hover { filter: brightness(1.08); }
button:disabled { opacity: .45; cursor: not-allowed; }
button.secondary { background: transparent; color: var(--text); border-color: #49665a; }
.text-button { background: transparent; color: var(--green); border: 0; padding: 4px; }
#target { min-width: 230px; }
.stats { display: flex; gap: 12px; }
.stats div { min-width: 104px; border-left: 1px solid var(--line); padding-left: 18px; }
.stats strong { display: block; font-family: system-ui, sans-serif; font-size: 1.8rem; }
.stats span { display: block; color: var(--muted); font-size: .7rem; margin-top: 3px; }
.reach-panel { padding: 22px; margin-bottom: 18px; }
.map-shell { position: relative; margin-top: 16px; }
.reach-map { position: relative; height: clamp(330px, 48vh, 520px); min-height: 330px; border: 1px solid #20362d; border-radius: 12px; background: #0c1713; overflow: hidden; }
.reach-empty { position: absolute; inset: 0; z-index: 500; display: grid; place-items: center; color: var(--muted); text-align: center; padding: 28px; background: rgba(9, 17, 15, .82); }
.map-fullscreen-button { position: absolute; z-index: 800; top: 12px; right: 12px; padding: 8px 10px; border-radius: 999px; font-size: .72rem; box-shadow: 0 6px 20px rgba(0, 0, 0, .28); }
.map-shell:fullscreen { width: 100vw; height: 100vh; padding: 12px; background: var(--bg); }
.map-shell:fullscreen .reach-map { width: 100%; height: 100%; min-height: 0; border-radius: 8px; }
.map-shell:fullscreen .map-fullscreen-button { top: 24px; right: 24px; }
.leaflet-container { background: #0c1713; color: #0b1512; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }
.leaflet-control-attribution, .leaflet-control-zoom a { background: rgba(237, 247, 241, .92); color: #0b1512; }
.reach-marker { width: 18px; height: 18px; margin: -9px 0 0 -9px; border: 2px solid #d9ffe6; border-radius: 999px; background: #49665a; box-shadow: 0 0 0 4px rgba(9, 17, 15, .7), 0 0 18px rgba(101, 242, 159, .3); }
.reach-marker.local { width: 22px; height: 22px; margin: -11px 0 0 -11px; background: var(--green); border-color: #f0fff5; }
.reach-marker.acked { background: var(--green); border-color: #d9ffe6; }
.reach-marker.pending { background: var(--amber); border-color: #fff0bc; }
.reach-marker.missed { background: var(--red); border-color: #ffd4cf; }
.reach-popup { color: #0b1512; font-family: system-ui, sans-serif; min-width: 180px; }
.reach-popup strong { display: block; margin-bottom: 4px; }
.reach-popup code { font-size: .78rem; }
.route-panel { padding: 22px; margin-bottom: 18px; }
.route-detail { margin-top: 12px; padding: 11px 13px; border: 1px solid #20362d; border-radius: 8px; color: var(--muted); background: rgba(12, 23, 19, .68); font-size: .74rem; line-height: 1.45; }
.route-detail strong { color: var(--text); }
.layout { display: grid; grid-template-columns: minmax(0, 2.25fr) minmax(300px, .75fr); gap: 18px; }
.nodes-panel, .probe-panel { padding: 22px; min-height: 470px; }
.section-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 18px; }
.node-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .82rem; }
th { color: var(--muted); font-weight: 500; text-align: left; padding: 10px; border-bottom: 1px solid var(--line); }
td { padding: 14px 10px; border-bottom: 1px solid #1e322a; vertical-align: middle; }
.sort-button { position: relative; background: transparent; color: inherit; border: 0; padding: 0 18px 0 0; font-weight: 600; text-align: left; }
.sort-button:hover { color: var(--green); filter: none; }
.sort-button::after { content: "<>"; position: absolute; right: 0; color: #49665a; font-size: .72rem; }
.sort-button.active { color: var(--green); }
.sort-button.active.asc::after { content: "^"; color: var(--green); }
.sort-button.active.desc::after { content: "v"; color: var(--green); }
.node-name { font-family: system-ui, sans-serif; font-weight: 750; font-size: .95rem; }
.node-id { color: var(--muted); font-size: .7rem; margin-top: 3px; }
.status { display: inline-block; padding: 4px 7px; border-radius: 4px; font-size: .68rem; text-transform: uppercase; }
.status.acked { color: var(--green); background: var(--green-dark); }
.status.pending { color: var(--amber); background: #3a3219; }
.status.timeout, .status.nak, .status.error { color: var(--red); background: #3a1f1c; }
.route-trigger { border: 0; cursor: pointer; font-family: inherit; }
.route-trigger:hover { filter: brightness(1.12); }
.empty { color: var(--muted); text-align: center; padding: 70px 0; }
.probe-panel label { display: block; color: var(--muted); font-size: .75rem; margin: 19px 0; }
.probe-panel textarea, .probe-panel input { display: block; width: 100%; margin-top: 7px; }
.probe-panel textarea { min-height: 82px; resize: vertical; }
.probe-panel > button { width: 100%; }
.fine-print { color: var(--muted); font-size: .69rem; line-height: 1.5; }
.recent-probes { margin-top: 34px; border-top: 1px solid var(--line); padding-top: 18px; }
.probe-row { display: grid; grid-template-columns: 1fr auto; gap: 8px; width: 100%; padding: 10px 0; border: 0; border-bottom: 1px solid #1e322a; border-radius: 0; background: transparent; color: var(--text); font-weight: 400; text-align: left; font-size: .73rem; }
.probe-row:hover, .probe-row.active { color: var(--green); filter: none; }
.probe-row span:first-child { overflow: hidden; text-overflow: ellipsis; }
#toast { position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%); background: #e9fff1; color: #082313; padding: 10px 16px; border-radius: 7px; opacity: 0; pointer-events: none; transition: opacity .2s; }
#toast.show { opacity: 1; }
@media (max-width: 900px) {
  .connect-panel, .layout { grid-template-columns: 1fr; }
  .connect-panel { gap: 18px; }
  .stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); padding-top: 18px; }
  .stats div { min-width: 0; }
  .reach-map { height: 420px; }
  .nodes-panel, .probe-panel { min-height: 0; }
}
@media (max-width: 560px) {
  main { width: 100%; padding: 18px 10px 34px; }
  header { display: block; }
  header .pill { display: inline-block; margin-top: 8px; }
  h1 { font-size: clamp(2.45rem, 17vw, 4rem); }
  h2 { font-size: 1.25rem; margin-bottom: 10px; }
  .lede { font-size: .96rem; }
  .panel { border-radius: 12px; }
  .connect-panel, .reach-panel, .route-panel, .nodes-panel, .probe-panel { padding: 15px; }
  .section-head { display: block; }
  .section-head .muted { margin-top: 10px; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 8px; overflow: visible; }
  .stats div { border-left: 0; border-top: 1px solid var(--line); padding: 10px 0 0; }
  .stats strong { font-size: 1.45rem; }
  .reach-map { height: 58vh; min-height: 300px; max-height: 430px; border-radius: 10px; }
  .map-fullscreen-button { top: 10px; right: 10px; font-size: .68rem; }
  .leaflet-control-zoom a { width: 34px; height: 34px; line-height: 34px; }
  .leaflet-control-attribution { font-size: 9px; }
  .leaflet-popup-content { margin: 10px 12px; }
  .reach-popup { min-width: 145px; font-size: .82rem; }
  .route-detail { font-size: .72rem; overflow-wrap: anywhere; }
  .node-actions { justify-content: flex-start; margin-top: 10px; }
  .text-button { min-height: 34px; padding: 6px 0; }
  .nodes-panel { min-width: 0; }
  .table-wrap { width: calc(100% + 30px); max-width: calc(100vw - 20px); margin: 0 -15px; padding: 0 15px 4px; }
  table { min-width: 760px; font-size: .76rem; }
  th { padding: 9px 8px; }
  td { padding: 12px 8px; }
  .probe-row { min-height: 44px; }
  #toast { width: min(92vw, 420px); text-align: center; }
}