:root {
  --bg: #111820;
  --sidebar: #151d28;
  --panel: #19212d;
  --panel-2: #202a38;
  --tile: #1d2634;
  --input: #243042;
  --border: #29344a;
  --border-strong: #3a4760;
  --sep: #253041;
  --text: #e6e9ef;
  --text-2: #c9d1dc;
  --muted: #98a2b3;
  --faint: #6f7a8c;
  --accent: #3b8cff;
  --accent-strong: #1f6fe5;
  --ok: #2fb57c;
  --warn: #e0a030;
  --bad: #e05a5a;
  --idle: #7d8796;
  --ok-bg: #15342b; --ok-border: #1f5a47; --ok-text: #5fe0b0;
  --warn-bg: #33291a; --warn-border: #6b5220; --warn-text: #f3c77a; --warn-card: #221d16; --warn-edge: #9a6d21;
  --bad-bg: #3a1d1f; --bad-border: #7a3a3a; --bad-text: #ff9b9b; --bad-card: #261a1f; --bad-edge: #9a3a3a;
  --info-bg: #172a44; --info-border: #2d4f7c; --info-text: #8fc1ff;
  --down-bg: #13302a; --up-bg: #152a45;
  --nav-active-bg: #1b3151; --nav-active-text: #8dbbff;
  --selected: #1d3353;
  --row-hover: #1f2836;
  --detail: #161e29;
  --code-bg: #0e141b;
  --grid-line: #273142;
  --overlay: #05070acc;
  --shadow: 0 20px 60px #000a;
  --radius: 10px;
  color-scheme: dark;
  font: 14px/1.45 Inter, "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
}
:root[data-theme="light"] {
  --bg: #f2f5f9;
  --sidebar: #ffffff;
  --panel: #ffffff;
  --panel-2: #f1f4f8;
  --tile: #f5f7fa;
  --input: #ffffff;
  --border: #dde3ec;
  --border-strong: #c7cfdb;
  --sep: #e6eaf0;
  --text: #1a2230;
  --text-2: #334155;
  --muted: #5b6678;
  --faint: #8a94a6;
  --accent: #2f7cf6;
  --accent-strong: #1f6fe5;
  --ok: #16a36a;
  --warn: #c98a12;
  --bad: #d64545;
  --idle: #8a94a6;
  --ok-bg: #e5f6ee; --ok-border: #b3e2ca; --ok-text: #11794f;
  --warn-bg: #fdf3e0; --warn-border: #efd29a; --warn-text: #8a5d00; --warn-card: #fffaf0; --warn-edge: #e6b85c;
  --bad-bg: #fdeaea; --bad-border: #f1bcbc; --bad-text: #b42f2f; --bad-card: #fff6f6; --bad-edge: #e59090;
  --info-bg: #e8f1ff; --info-border: #bcd5fb; --info-text: #1f5fc4;
  --down-bg: #eaf8f1; --up-bg: #ebf3ff;
  --nav-active-bg: #e6f0ff; --nav-active-text: #1f5fc4;
  --selected: #dbe8ff;
  --row-hover: #f5f8fc;
  --detail: #f7f9fc;
  --code-bg: #f3f5f8;
  --grid-line: #e3e8ef;
  --overlay: #1a223066;
  --shadow: 0 20px 60px #1a223033;
  color-scheme: light;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); }
a { color: var(--accent); }
code, pre, .mono { font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace; font-size: 12.5px; }
h1 { font-size: 22px; margin: 0; font-weight: 700; }
h2 { font-size: 16px; margin: 0 0 4px; font-weight: 600; }
h3 { font-size: 14px; margin: 0 0 8px; font-weight: 600; }
p.sub { margin: 0 0 12px; color: var(--muted); }
svg.icon { flex: none; display: block; }

/* shell */
.layout { display: grid; grid-template-columns: 250px minmax(0, 1fr); min-height: 100vh; }
.layout.collapsed { grid-template-columns: 72px minmax(0, 1fr); }
aside { background: var(--sidebar); border-right: 1px solid var(--border); display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh; overflow-y: auto; z-index: 30; }
.side-brand { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 8px; padding: 24px 16px 20px; border-bottom: 1px solid var(--border); }
.side-brand .logo { width: 78px; height: 78px; filter: drop-shadow(0 0 14px #3b8cff55); }
.side-text b { display: block; font-size: 18px; color: var(--accent); letter-spacing: .2px; }
.side-text small { display: block; color: var(--muted); font-size: 12.5px; }
.side-text .ver { display: inline-block; margin-top: 8px; padding: 2px 10px; border-radius: 6px; background: var(--panel-2); color: var(--faint); font-size: 11.5px; font-family: "JetBrains Mono", Consolas, monospace; }
aside nav { display: flex; flex-direction: column; gap: 4px; padding: 16px 12px; flex: 1; }
aside button.nav { all: unset; cursor: pointer; padding: 11px 14px; border-radius: 9px; color: var(--muted); display: flex; gap: 12px; align-items: center; font-size: 15px; font-weight: 500; }
aside button.nav:hover { background: var(--panel-2); color: var(--text); }
aside button.nav.active { background: var(--nav-active-bg); color: var(--nav-active-text); }
aside button.nav:focus-visible { outline: 2px solid var(--accent); }
.side-foot { border-top: 1px solid var(--border); padding: 12px; }
.side-actions { display: flex; justify-content: space-between; gap: 4px; }
.side-actions button.nav { padding: 8px 10px; font-size: 14px; gap: 8px; }
.side-actions button.logout { color: var(--bad); }
aside .who { color: var(--faint); font-size: 12px; padding: 8px 10px 2px; }
.layout.collapsed .side-brand { padding: 16px 8px; }
.layout.collapsed .side-brand .logo { width: 44px; height: 44px; }
.layout.collapsed .side-text, .layout.collapsed aside button.nav span, .layout.collapsed aside .who { display: none; }
.layout.collapsed aside nav { padding: 12px 10px; }
.layout.collapsed aside button.nav { justify-content: center; padding: 11px 0; }
.layout.collapsed .side-actions { flex-direction: column; align-items: stretch; }
.backdrop { display: none; }
.main-col { min-width: 0; display: flex; flex-direction: column; }
.topbar { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 24px; background: var(--sidebar); border-bottom: 1px solid var(--border); min-height: 58px; }
.topbar-right { display: flex; align-items: center; gap: 10px; }
button.ghost { background: transparent; border-color: transparent; color: var(--muted); padding: 6px 8px; }
button.ghost:hover { color: var(--text); border-color: var(--border-strong); }
.meter { display: flex; align-items: center; gap: 8px; padding: 5px 12px; border-radius: 8px; background: var(--panel-2); border: 1px solid var(--border); color: var(--accent); }
.meter b { display: block; font: 600 12px "JetBrains Mono", Consolas, monospace; color: var(--text); min-width: 76px; }
.meter i { display: block; height: 3px; margin-top: 3px; border-radius: 2px; background: var(--border); overflow: hidden; }
.meter s { display: block; height: 100%; }
main.content { padding: 24px 28px 60px; width: 100%; container: content / inline-size; }
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; }

.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; margin-bottom: 16px; }
.card.flush { padding: 0; overflow: hidden; }
.card .card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin-bottom: 16px; }
.tile { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.tile .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .5px; }
.tile .value { font-size: 26px; font-weight: 650; margin-top: 4px; }
.tile .hint { color: var(--faint); font-size: 12px; }

button, .btn { font: inherit; border: 1px solid var(--border-strong); background: var(--panel-2); color: var(--text); padding: 7px 13px; border-radius: 8px; cursor: pointer; white-space: nowrap; }
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent-strong); border-color: var(--accent-strong); color: #fff; }
button.primary:hover { background: var(--accent); }
button.danger { color: var(--bad-text); border-color: var(--bad-border); }
button.danger:hover { background: var(--bad-bg); }
button.small { padding: 4px 9px; font-size: 12.5px; }
button:disabled { opacity: .5; cursor: default; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: .4px; background: var(--panel-2); }
tr:last-child td { border-bottom: none; }
tr.clickable { cursor: pointer; }
tr.clickable:hover td { background: var(--row-hover); }
td.detail { background: var(--detail); padding: 14px 18px; }

.badge { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; border: 1px solid var(--border-strong); color: var(--muted); }
.badge.open { color: var(--info-text); border-color: var(--info-border); }
.badge.strict { color: var(--warn-text); border-color: var(--warn-border); }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; background: var(--idle); }
.dot.online { background: var(--ok); } .dot.offline { background: var(--bad); } .dot.pending { background: var(--warn); }
.mode-pending { color: var(--faint); }
.mode-direct { color: var(--ok); } .mode-relay { color: var(--warn); } .mode-checking { color: var(--idle); } .mode-unavailable { color: var(--bad); }
.muted { color: var(--muted); } .faint { color: var(--faint); }
.err { color: var(--bad-text); }
.banner { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; border: 1px solid; }
.banner.error { background: var(--bad-bg); border-color: var(--bad-border); color: var(--bad-text); }
.banner.warn { background: var(--warn-card); border-color: var(--warn-edge); color: var(--warn-text); }
.banner.info { background: var(--info-bg); border-color: var(--info-border); color: var(--info-text); }
.banner.with-icon { display: flex; gap: 10px; align-items: flex-start; }
.banner.with-icon > svg { margin-top: 1px; }
.banner .small-line { font-size: 12.5px; margin-top: 3px; }

label.field { display: flex; flex-direction: column; gap: 5px; font-size: 13px; color: var(--muted); }
label.field > span.hint { color: var(--faint); font-size: 12px; }
.input-row { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.input-row input { flex: 1 1 160px; min-width: 0; }
.check-result { font-size: 12.5px; }
.check-result.ok { color: var(--ok-text); }
.check-result.bad { color: var(--bad-text); }
input[type=text], input[type=password], input[type=number], select, textarea {
  font: inherit; color: var(--text); background: var(--input); border: 1px solid var(--border); border-radius: 7px; padding: 8px 10px; width: 100%;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px #3b8cff33; }
input::placeholder, textarea::placeholder { color: var(--faint); }
textarea { min-height: 80px; resize: vertical; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.stack { display: flex; flex-direction: column; gap: 12px; }
.check { display: inline-flex; align-items: center; gap: 8px; color: var(--text); cursor: pointer; }
input[type=checkbox] { width: 18px; height: 18px; accent-color: var(--accent-strong); margin: 0; }
details { border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px; }
details summary { cursor: pointer; color: var(--muted); }
details[open] summary { margin-bottom: 10px; }

.modal-back { position: fixed; inset: 0; background: var(--overlay); display: flex; align-items: flex-start; justify-content: center; padding: 5vh 16px; z-index: 40; overflow: auto; }
.modal { background: var(--panel); border: 1px solid var(--border-strong); border-radius: 12px; width: min(760px, 100%); box-shadow: var(--shadow); }
.modal header { padding: 16px 20px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.modal .body { padding: 18px 20px; }
.modal footer { padding: 14px 20px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 8px; }

.select-nodes { border: 1px solid var(--border); border-radius: 10px; padding: 6px 14px; }
.select-nodes .row { display: grid; grid-template-columns: 1fr minmax(240px, 340px); gap: 12px; align-items: center; padding: 8px 0; }
.select-nodes .row + .row { border-top: 1px solid var(--sep); }
.select-nodes .name { display: flex; align-items: center; gap: 10px; font-size: 15px; color: var(--text); }
.select-nodes .name small { color: var(--muted); font-size: 12.5px; }
.select-nodes input[type=text]:disabled { opacity: .35; }

pre.cmd { background: var(--code-bg); border: 1px solid var(--border); padding: 12px; border-radius: 8px; white-space: pre-wrap; word-break: break-all; margin: 0; }
.log { background: var(--code-bg); border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; max-height: 300px; overflow: auto; }
.log div { font-family: "JetBrains Mono", Consolas, monospace; font-size: 12.5px; color: var(--text-2); }
.log div time { color: var(--faint); margin-right: 8px; }

/* connections graph */
.topology { width: 100%; height: auto; max-height: 460px; display: block; }
.topology text.node-name { fill: var(--text); font-size: 14px; font-weight: 600; }
.topology text.node-sub { fill: var(--faint); font-size: 11.5px; }
.topo-wrap { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(260px, 1fr); gap: 18px; align-items: start; }
.paths { border-left: 1px solid var(--border); padding-left: 18px; }
.paths h3 { margin: 14px 0 6px; font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .4px; }
.paths ul { list-style: none; margin: 0; padding: 0; }
.paths li { display: flex; justify-content: space-between; gap: 10px; padding: 6px 0; border-bottom: 1px solid var(--sep); }
.path-summary { display: flex; gap: 18px; font-size: 13px; color: var(--muted); }
.path-summary b { font-size: 22px; margin-right: 4px; }
.legend b.shape { display: inline-block; width: 11px; height: 11px; border: 2px solid var(--muted); margin-right: 6px; vertical-align: -1px; }
.legend b.shape.circle { border-radius: 50%; }
.legend b.shape.square { border-radius: 2px; }
.legend b.shape.diamond { border-radius: 2px; transform: rotate(45deg) scale(.85); }
.legend { display: flex; gap: 16px; flex-wrap: wrap; color: var(--muted); font-size: 12px; align-items: center; }
.legend i { display: inline-block; width: 22px; height: 0; border-top: 3px solid; vertical-align: middle; margin-right: 6px; }
.topo-node { cursor: pointer; }
.relay-path { fill: none; stroke: var(--warn); stroke-width: 3; stroke-dasharray: 9 6; }

.center { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 16px; }
.center .card { width: min(420px, 100%); }
.brand { display: flex; align-items: center; gap: 12px; padding: 4px 0 12px; font-weight: 700; font-size: 16px; }
.brand .logo { width: 44px; height: 44px; }
.brand small { display: block; color: var(--faint); font-weight: 500; font-size: 12px; }
.kv { display: grid; grid-template-columns: 170px 1fr; gap: 6px 14px; }
.kv > div:nth-child(odd) { color: var(--muted); }

/* dashboard */
.page-head button.reset { display: inline-flex; align-items: center; gap: 7px; background: var(--warn-bg); border-color: var(--warn-border); color: var(--warn-text); }
.dash-grid { display: grid; grid-template-columns: minmax(0, 1fr); grid-auto-flow: row dense; align-items: start; gap: 14px; margin-bottom: 16px; }
.dash-grid > .card { margin-bottom: 0; }
@container content (min-width: 640px) {
  .dash-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .traffic-card { grid-column: span 2; }
}
/* From here the traffic card keeps two columns of node cards on its right;
   the second row takes whatever height the traffic card needs. */
@container content (min-width: 1080px) {
  .dash-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); grid-template-rows: min-content 1fr; }
  .traffic-card { grid-column: span 2; grid-row: span 2; min-height: 440px; }
}
@container content (min-width: 1420px) {
  .dash-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .traffic-card { grid-column: span 3; }
}
.traffic-card { display: flex; flex-direction: column; }
.with-icon { display: flex; align-items: center; gap: 10px; }
.icon-box { display: inline-flex; padding: 6px; border-radius: 8px; background: var(--ok-bg); color: var(--ok); }
.traffic-tiles { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 10px; }
.ttile { display: flex; justify-content: space-between; align-items: center; gap: 8px; border-radius: 9px; padding: 12px 14px; border: 1px solid; }
.ttile.down { background: var(--down-bg); border-color: var(--ok-border); }
.ttile.up { background: var(--up-bg); border-color: var(--info-border); }
.ttile .label { font-size: 13px; }
.ttile.down .label { color: var(--ok-text); } .ttile.up .label { color: var(--info-text); }
.ttile .rate { font: 600 22px "JetBrains Mono", Consolas, monospace; margin-top: 2px; }
.ttile.down .rate { color: var(--ok-text); } .ttile.up .rate { color: var(--info-text); }
.ttile .total { text-align: right; font: 600 12px "JetBrains Mono", Consolas, monospace; padding: 5px 9px; border-radius: 7px; background: var(--panel); border: 1px solid var(--border); }
.ttile.down .total { color: var(--ok-text); } .ttile.up .total { color: var(--info-text); }
.ttile .total small { display: block; font-size: 9.5px; color: var(--faint); letter-spacing: .5px; }
.traffic-chart { width: 100%; height: 250px; display: block; flex: 1; min-height: 200px; }
.traffic-chart .grid { stroke: var(--grid-line); stroke-width: 1; }
.traffic-chart .axis { fill: var(--faint); font: 11px "JetBrains Mono", Consolas, monospace; }
.traffic-chart .area-down { fill: #2fb57c22; } .traffic-chart .area-up { fill: #3b8cff22; }
.traffic-chart .line-down { fill: none; stroke: var(--ok); stroke-width: 2; }
.traffic-chart .line-up { fill: none; stroke: var(--accent); stroke-width: 2; }
.chart-legend { margin-top: 6px; }
.dot-l { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 6px; }
.node-card { display: flex; flex-direction: column; gap: 10px; }
.node-card.ok { border-color: var(--ok-border); }
.node-card.warn { border-color: var(--warn-edge); background: var(--warn-card); }
.node-card.bad { border-color: var(--bad-edge); background: var(--bad-card); }
.node-card.idle { opacity: .8; }
/* A long name keeps its line; the badge moves below it on narrow cards. */
.nc-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 10px; align-items: flex-start; }
.nc-title { flex: 1 1 150px; min-width: 0; }
.nc-title b { font-size: 15px; }
.nc-title .faint { font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nc-actions { display: flex; gap: 4px; align-items: center; flex: none; margin-left: auto; }
.state { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 999px; white-space: nowrap; }
.state.ok { background: var(--ok-bg); color: var(--ok-text); } .state.warn { background: var(--warn-bg); color: var(--warn-text); }
.state.bad { background: var(--bad-bg); color: var(--bad-text); } .state.idle { background: var(--panel-2); color: var(--muted); }
button.icon-btn { display: inline-flex; padding: 4px; background: transparent; border-color: transparent; color: var(--warn); }
button.icon-btn:hover { border-color: var(--warn-border); }
.nc-tiles { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.nc-tiles > div { background: var(--tile); border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; display: flex; flex-direction: column; }
.nc-tiles .label { font-size: 11px; text-transform: uppercase; letter-spacing: .4px; }
.nc-tiles .down .label { color: var(--ok-text); } .nc-tiles .up .label { color: var(--info-text); }
.nc-tiles b { font: 600 14px "JetBrains Mono", Consolas, monospace; }
.nc-tiles .down b { color: var(--ok-text); } .nc-tiles .up b { color: var(--info-text); }
.nc-tiles span { font-size: 11.5px; color: var(--faint); }
.nc-ping { display: flex; justify-content: space-between; font: 600 12.5px "JetBrains Mono", Consolas, monospace; color: var(--muted); padding: 0 4px; }
.nc-foot { border-top: 1px solid var(--border); padding-top: 8px; text-align: center; font-size: 13px; font-weight: 500; }
.nc-fail { font-size: 11.5px; color: var(--faint); font-weight: 400; margin-top: 2px; }

@media (max-width: 1100px) {
  .topo-wrap { grid-template-columns: 1fr; }
  .paths { border-left: none; padding-left: 0; border-top: 1px solid var(--border); padding-top: 10px; }
}
@media (max-width: 900px) {
  .layout, .layout.collapsed { grid-template-columns: minmax(0, 1fr); }
  aside { position: fixed; left: 0; top: 0; bottom: 0; width: 250px; transform: translateX(-100%); transition: transform .2s; }
  .layout.nav-open aside { transform: none; }
  .layout.nav-open .backdrop { display: block; position: fixed; inset: 0; background: var(--overlay); z-index: 25; }
  .layout.collapsed .side-text, .layout.collapsed aside button.nav span, .layout.collapsed aside .who { display: revert; }
  .topbar { padding: 8px 16px; }
  .meter b { min-width: 0; }
  .grid2, .grid3 { grid-template-columns: 1fr; }
  .select-nodes .row { grid-template-columns: 1fr; }
  main.content { padding: 16px; }
  .table-wrap { overflow-x: auto; }
}
@media (max-width: 520px) {
  .meter:nth-child(2) { display: none; }
  .traffic-tiles { grid-template-columns: 1fr; }
}