/* Palette — reference values from the dataviz skill (validated for light and dark) */
.viz-root, .detail-panel, .sidenav {
  color-scheme: light;
  --surface-1: #fcfcfb;
  --page: #f9f9f7;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --series-down: #2a78d6;   /* download — blue, slot 1 */
  --series-up: #eb6834;     /* upload — orange, slot 2 */
  --series-3: #1baf7a;      /* aqua, slot 3 */
  --series-4: #eda100;      /* yellow, slot 4 */
  --critical: #d03b3b;
  --hover: rgba(11, 11, 11, 0.04);
  --select: rgba(42, 120, 214, 0.10);
  --flow-3: #1baf7a;
  --flow-4: #eda100;
  --flow-5: #e87ba4;
  --flow-6: #008300;
  --flow-7: #4a3aa7;
  --flow-8: #e34948;
}
@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme="light"])) .viz-root,
  :root:where(:not([data-theme="light"])) .detail-panel,
  :root:where(:not([data-theme="light"])) .sidenav {
    color-scheme: dark;
    --surface-1: #1a1a19;
    --page: #0d0d0d;
    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted: #898781;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.10);
    --series-down: #3987e5;
    --series-up: #d95926;
    --series-3: #199e70;
    --series-4: #c98500;
    --critical: #d03b3b;
    --hover: rgba(255, 255, 255, 0.05);
    --select: rgba(57, 135, 229, 0.16);
  --flow-3: #199e70;
  --flow-4: #c98500;
  --flow-5: #d55181;
  --flow-6: #008300;
  --flow-7: #9085e9;
  --flow-8: #e66767;
    --flow-3: #199e70;
    --flow-4: #c98500;
    --flow-5: #d55181;
    --flow-6: #008300;
    --flow-7: #9085e9;
    --flow-8: #e66767;
  }
}
:root[data-theme="dark"] .viz-root,
:root[data-theme="dark"] .detail-panel,
:root[data-theme="dark"] .sidenav {
  color-scheme: dark;
  --surface-1: #1a1a19;
  --page: #0d0d0d;
  --text-primary: #ffffff;
  --text-secondary: #c3c2b7;
  --text-muted: #898781;
  --grid: #2c2c2a;
  --axis: #383835;
  --border: rgba(255, 255, 255, 0.10);
  --series-down: #3987e5;
  --series-up: #d95926;
  --series-3: #199e70;
  --series-4: #c98500;
  --critical: #d03b3b;
  --hover: rgba(255, 255, 255, 0.05);
  --select: rgba(57, 135, 229, 0.16);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 14px;
}

/* ---------- frame: side menu + content ---------- */

.layout { display: flex; min-height: 100vh; }

.sidenav {
  width: 210px; flex-shrink: 0;
  background: var(--surface-1); color: var(--text-primary);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  position: sticky; top: 0; height: 100vh;
}
.side-brand {
  font-size: 18px; font-weight: 650; letter-spacing: 0.2px;
  padding: 16px 16px 14px; border-bottom: 1px solid var(--grid);
  display: flex; align-items: center; gap: 9px;
}
/* the mark: a stroked SVG, so it follows the theme through currentColor */
.side-logo { width: 22px; height: 22px; flex: none; color: var(--series-down); }
body.nav-collapsed .side-logo { margin: 0 auto; }
.side-menu { display: flex; flex-direction: column; padding: 10px 8px; gap: 2px; flex: 1; }
.side-item {
  display: flex; align-items: center; gap: 9px;
  padding: 9px 12px; border-radius: 8px;
  color: var(--text-secondary); text-decoration: none; font-size: 13.5px;
  border-left: 3px solid transparent;
}
.side-icon { width: 16px; height: 16px; flex-shrink: 0; }
.side-item:hover { background: var(--hover); color: var(--text-primary); }
.side-item.active {
  background: var(--select); color: var(--text-primary); font-weight: 600;
  border-left-color: var(--series-down);
}
.side-foot { padding: 12px 16px; color: var(--text-muted); font-size: 12px; border-top: 1px solid var(--grid); }

.side-collapse {
  background: none; border: none; border-left: 3px solid transparent;
  font-family: inherit; font-size: 13.5px; text-align: left; cursor: pointer;
  margin: 0 8px 8px;
}

/* collapsed menu: icons only */
@media (min-width: 801px) {
  .sidenav { transition: width 0.15s ease; }
  body.nav-collapsed .sidenav { width: 58px; }
  body.nav-collapsed .side-label { display: none; }
  body.nav-collapsed .side-brand { justify-content: center; padding-left: 0; padding-right: 0; }
  body.nav-collapsed .side-item { justify-content: center; padding-left: 0; padding-right: 0; }
  body.nav-collapsed .side-collapse svg { transform: rotate(180deg); }
  body.nav-collapsed .side-foot { padding: 12px 0; min-height: 40px; }
  body.nav-collapsed .detail-panel { left: 58px; }
}

@media (max-width: 800px) {
  .layout { flex-direction: column; }
  .sidenav {
    width: auto; height: auto; position: sticky; top: 0; z-index: 30;
    flex-direction: row; align-items: center;
    border-right: none; border-bottom: 1px solid var(--border);
  }
  .side-brand { border-bottom: none; padding: 10px 12px; white-space: nowrap; }
  .side-menu {
    flex-direction: row; padding: 0 6px; gap: 4px; flex: 1;
    overflow-x: auto; -webkit-overflow-scrolling: touch;
  }
  .side-item {
    border-left: none; border-bottom: 2px solid transparent; border-radius: 8px 8px 0 0;
    white-space: nowrap; padding: 10px 10px;
  }
  .side-item.active { border-left: none; border-bottom-color: var(--series-down); }
  .side-foot, .side-collapse { display: none; }
}


.viz-root {
  flex: 1;
  min-width: 0; /* keeps content from stretching the flex container */
  min-height: 100vh;
  background: var(--page);
  color: var(--text-primary);
  padding: 16px clamp(12px, 3vw, 32px) 40px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: padding-bottom 0.15s ease;
}
.viz-root.with-detail { padding-bottom: min(46vh, 420px); }

.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.brand { display: flex; align-items: baseline; gap: 10px; }
.brand-title { font-size: 20px; font-weight: 650; letter-spacing: 0.2px; }
.brand-sub { color: var(--text-muted); }

.top-stats { display: flex; gap: 18px; flex-wrap: wrap; color: var(--text-secondary); }
.top-stat { display: inline-flex; align-items: center; gap: 7px; white-space: nowrap; }
.top-stat b { color: var(--text-primary); font-weight: 600; font-variant-numeric: tabular-nums; }

.topbar-right { display: flex; gap: 8px; }
.badge {
  font-size: 12px; padding: 3px 10px; border-radius: 999px;
  background: var(--series-up); color: #fff;
}
.badge-quiet { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
/* same button as on the settings page, only tighter for the header */
.iface-topbar { min-width: 0; max-width: 230px; height: 30px; padding: 0 10px; font-size: 12px; }

.theme-btn {
  background: transparent; border: 1px solid var(--border); border-radius: 999px;
  color: var(--text-secondary); cursor: pointer; font-size: 15px; line-height: 1;
  width: 30px; height: 30px; padding: 0;
}
.theme-btn:hover { color: var(--text-primary); background: var(--hover); }
.lang-btn {
  display: inline-flex; align-items: center; gap: 6px; height: 30px; padding: 0 10px;
  background: transparent; border: 1px solid var(--border); border-radius: 999px;
  color: var(--text-secondary); cursor: pointer; font-family: inherit;
  font-size: 12px; font-weight: 600; letter-spacing: 0.3px;
}
.lang-btn:hover { color: var(--text-primary); background: var(--hover); }

.lang-menu {
  position: fixed; z-index: 60; min-width: 150px;
  background: var(--surface-1); border: 1px solid var(--border); border-radius: 10px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.22); padding: 6px;
  display: flex; flex-direction: column; gap: 2px; color: var(--text-primary);
}
.lang-menu[hidden] { display: none; }
.lang-menu button {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  background: none; border: none; border-radius: 6px; cursor: pointer;
  font-family: inherit; font-size: 13px; color: inherit; padding: 7px 10px; text-align: left;
}
.lang-menu button:hover { background: var(--hover); }
.lang-menu button.active { font-weight: 600; }
.lang-menu .check { color: var(--series-down); }

.error-banner {
  border: 1px solid var(--critical); color: var(--critical);
  background: color-mix(in srgb, var(--critical) 8%, var(--surface-1));
  border-radius: 10px; padding: 10px 14px;
}

.card {
  background: var(--surface-1); border: 1px solid var(--border); border-radius: 12px;
  padding: 14px 16px;
}
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }
.card-head h2 { font-size: 15px; font-weight: 600; }
.card-head-left { display: flex; align-items: center; }
.card-head-right { display: flex; align-items: center; gap: 14px; }

.link-btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: transparent; border: 1px solid var(--border); border-radius: 8px;
  color: var(--text-secondary); cursor: pointer;
  font-size: 13px; font-family: inherit; padding: 6px 12px;
}
.link-btn:hover { color: var(--text-primary); background: var(--hover); }

.cols-btn {
  display: inline-flex; align-items: center; gap: 7px;
  background: transparent; border: 1px solid var(--border); border-radius: 8px;
  color: var(--text-secondary); cursor: pointer; font-family: inherit;
  font-size: 13px; padding: 6px 12px;
}
.cols-btn:hover { color: var(--text-primary); background: var(--hover); }
.btn-icon { width: 15px; height: 15px; flex-shrink: 0; }

.legend { display: flex; gap: 14px; color: var(--text-secondary); font-size: 13px; }
.legend-item { display: inline-flex; align-items: center; gap: 6px; }
.key { width: 14px; height: 3px; border-radius: 2px; display: inline-block; }
.key-down { background: var(--series-down); }
.key-up { background: var(--series-up); }

.chart-wrap { position: relative; height: 190px; }
.chart-wrap canvas { width: 100%; height: 100%; display: block; cursor: crosshair; }

.tooltip {
  position: absolute; pointer-events: none; z-index: 5;
  background: var(--surface-1); border: 1px solid var(--border); border-radius: 8px;
  padding: 8px 10px; font-size: 12.5px; box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
  white-space: nowrap; color: var(--text-primary);
}
.tooltip .tip-time { color: var(--text-muted); margin-bottom: 4px; }
.tooltip .tip-row { display: flex; align-items: center; gap: 6px; }
.tooltip .dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }

.search {
  background: var(--page); border: 1px solid var(--border); border-radius: 8px;
  color: var(--text-primary); padding: 7px 12px; min-width: 220px; font-size: 13px;
}
.unit-label { color: var(--text-muted); font-size: 12.5px; display: inline-flex; align-items: center; gap: 6px; }
.unit-select {
  background: var(--page); border: 1px solid var(--border); border-radius: 8px;
  color: var(--text-primary); padding: 6px 8px; font-size: 13px; font-family: inherit;
}
.search:focus { outline: 2px solid var(--series-down); outline-offset: 1px; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
#hosts-table {
  /* fixed layout — column widths do not "breathe" when values refresh; width is
     always 100% of the container and percentage columns scale with the window */
  table-layout: fixed;
  width: 100%;
  min-width: 640px;
}
/* Default widths of the data columns (px); .col-filler takes the remainder.
   Each one fits its own header in both languages — an ellipsised header is
   unreadable, and the numeric columns have very different label lengths. */
#hosts-table .col-host { width: 165px; }
#hosts-table .col-ip { width: 130px; }
#hosts-table .col-mac { width: 135px; }
#hosts-table .col-num { width: 90px; }
#hosts-table .col-spark { width: 116px; }
#hosts-table .col-filler { width: auto; }
#hosts-table th[data-col="down"] { width: 100px; }
#hosts-table th[data-col="up"] { width: 120px; }
#hosts-table th[data-col="conns"] { width: 140px; }
#hosts-table th[data-col="addr"] { width: 132px; }
#hosts-table th[data-col="start"] { width: 125px; }
#hosts-table th[data-col="uptime"] { width: 88px; }
#hosts-table th[data-col="idle"] { width: 124px; }
#hosts-table th[data-col="iface"] { width: 105px; }
#hosts-table th[data-col="vendor"] { width: 150px; }
#hosts-table th[data-col="peer"] { width: 185px; }
#hosts-table th[data-col="dests"] { width: 120px; }
#hosts-table th[data-col="peakdown"] { width: 116px; }
#hosts-table th[data-col="peakup"] { width: 128px; }
#hosts-table th[data-col="tdown"] { width: 138px; }
#hosts-table th[data-col="tup"] { width: 148px; }
#hosts-table td.uptime, #hosts-table td.idle, #hosts-table td.start {
  font-variant-numeric: tabular-nums; white-space: nowrap;
}
th {
  text-align: left; color: var(--text-muted); font-weight: 500; font-size: 12.5px;
  padding: 6px 10px; border-bottom: 1px solid var(--grid);
}
#hosts-table th { position: relative; overflow: hidden; text-overflow: ellipsis; }
.col-resizer {
  position: absolute; top: 0; right: -4px; width: 9px; height: 100%;
  cursor: col-resize; z-index: 2;
}
.col-resizer::after {
  content: ""; position: absolute; right: 4px; top: 15%; height: 70%; width: 2px;
  background: var(--grid);
}
.col-resizer:hover::after, .col-resizer.dragging::after { background: var(--series-down); }
th.th-dragover { box-shadow: inset 3px 0 0 var(--series-down); }
#hosts-table td { overflow: hidden; text-overflow: ellipsis; }

th.sortable { cursor: pointer; user-select: none; white-space: nowrap; }
th.sortable::after { content: " ⇅"; font-size: 10px; opacity: 0.45; }
th.sortable:hover { color: var(--text-primary); }
th.sortable:hover::after { opacity: 1; }
th.sortable.sorted { color: var(--text-primary); font-weight: 600; }
th.sortable.sorted::after { content: " ▲"; font-size: 9px; opacity: 1; }
th.sortable.sorted[data-dir="desc"]::after { content: " ▼"; }
td { padding: 7px 10px; border-bottom: 1px solid var(--grid); }
tbody tr.host-row { cursor: pointer; }
tbody tr.host-row:hover { background: var(--hover); }
tbody tr.host-row.selected { background: var(--select); }
tbody tr:last-child td { border-bottom: none; }

.col-num, td.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.col-spark { width: 130px; }
.col-host { min-width: 140px; }
.col-ip, td.ip { white-space: nowrap; font-variant-numeric: tabular-nums; }
.col-mac, td.mac { white-space: nowrap; color: var(--text-secondary); font-size: 12.5px; }

.host-name { font-weight: 600; }
.host-name.unnamed {
  font-weight: 400; color: var(--text-secondary);
  display: inline-block; max-width: 200px; overflow: hidden;
  text-overflow: ellipsis; white-space: nowrap; vertical-align: bottom;
}
.host-idle { opacity: 0.55; }

td.num .rate-unit { color: var(--text-muted); font-size: 12px; margin-left: 3px; }
.spark-canvas { width: 100%; max-width: 140px; height: 26px; display: block; }

.empty-note { color: var(--text-muted); padding: 18px 10px; }

.view { display: flex; flex-direction: column; gap: 14px; }
.view[hidden] { display: none; }

/* login page */
.login-root { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-tools {
  position: fixed; top: 14px; right: 16px;
  display: flex; align-items: center; gap: 8px;
}
.login-card { width: min(360px, 92vw); display: flex; flex-direction: column; gap: 14px; padding: 22px; }
.login-brand {
  font-size: 19px; font-weight: 650;
  display: flex; align-items: center; justify-content: center; gap: 9px;
}
.login-field { display: flex; flex-direction: column; gap: 6px; }
.login-field input { width: 100%; max-width: none; }
.login-submit { justify-content: center; }
.login-error { color: var(--critical); font-size: 13px; text-align: center; }

/* action menu for a connection */
.conn-menu {
  /* fixed rather than absolute: the page may be scrolled while click coordinates
     arrive relative to the window — otherwise the menu lands off screen */
  position: fixed; z-index: 70; min-width: 230px; max-width: calc(100vw - 24px);
  background: var(--surface-1); border: 1px solid var(--border); border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.26); padding: 6px;
  display: flex; flex-direction: column; gap: 2px; color: var(--text-primary);
}
.conn-menu[hidden] { display: none; }
.conn-menu-title {
  font-size: 12px; color: var(--text-muted); padding: 4px 8px 6px;
  border-bottom: 1px solid var(--grid); margin-bottom: 4px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.conn-menu-note { font-size: 12.5px; color: var(--text-secondary); padding: 4px 8px 8px; }
.conn-menu-note.danger { color: var(--critical); }
.conn-menu button {
  background: none; border: none; border-radius: 6px; cursor: pointer;
  font-family: inherit; font-size: 13px; color: inherit; padding: 8px 10px; text-align: left;
}
.conn-menu button:hover { background: var(--hover); }
.conn-menu button.danger { color: var(--critical); }
.conn-menu button:disabled { opacity: 0.45; cursor: default; }
.conn-table tr.conn-clickable { cursor: pointer; }

.toast {
  position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%); z-index: 80;
  background: var(--surface-1); color: var(--text-primary);
  border: 1px solid var(--border); border-radius: 999px; padding: 8px 16px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.24); font-size: 13px;
}

.rules-help { margin-bottom: 10px; font-size: 12.5px; color: var(--text-secondary); }
.rules-help summary { cursor: pointer; color: var(--series-down); }
.rules-help ol { margin: 8px 0 6px 20px; display: flex; flex-direction: column; gap: 3px; }
.nat-chip {
  display: inline-block; padding: 1px 7px; border-radius: 999px; font-size: 11.5px;
  border: 1px solid var(--border); color: var(--text-secondary); white-space: nowrap;
}

/* "Rules" section: configured rules */
.cfg-list { display: flex; flex-direction: column; gap: 2px; }
.cfg-row {
  display: grid; grid-template-columns: 74px 110px minmax(120px, 1fr) 16px minmax(120px, 1fr) minmax(120px, 1.2fr) 96px;
  align-items: center; gap: 10px; padding: 7px 10px; border-radius: 8px; font-size: 12.5px;
}
.cfg-row:hover { background: var(--hover); }
.cfg-row.inactive { opacity: 0.55; }
.cfg-row.disabled { opacity: 0.4; text-decoration: line-through; }
.cfg-head {
  display: grid; grid-template-columns: 74px 110px minmax(120px, 1fr) 16px minmax(120px, 1fr) minmax(120px, 1.2fr) 96px;
  gap: 10px; padding: 0 10px 6px; color: var(--text-muted); font-size: 12.5px;
  border-bottom: 1px solid var(--grid); margin-bottom: 4px;
}
.cfg-act {
  display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 11px;
  border: 1px solid var(--border); white-space: nowrap;
}
.cfg-act.pass { color: #0ca30c; border-color: rgba(12, 163, 12, 0.4); }
.cfg-act.block, .cfg-act.reject { color: var(--critical); border-color: rgba(208, 59, 59, 0.4); }
.cfg-arrow { color: var(--text-muted); text-align: center; }
.cfg-addr, .cfg-descr, .cfg-iface { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cfg-descr { color: var(--text-primary); }
.cfg-use { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.cfg-use.idle { color: var(--text-muted); }

/* "Rules" section: the "network -> rule -> network" diagram */
.rule-map { overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: 4px; }
.fmap-canvas { position: relative; margin: 0 auto; }

.fmap-col-title {
  position: absolute; top: 26px; font-size: 11px; letter-spacing: 0.09em;
  text-transform: uppercase; color: var(--text-muted); white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
}
/* frame around the rules column — the firewall boundary */
.fmap-group {
  position: absolute; border: 1px solid var(--grid); border-radius: 12px;
  background: var(--hover); pointer-events: none;
}
/* the label sits on the top border, like a fieldset legend */
.fmap-group-label {
  position: absolute; top: -7px; padding: 0 7px; background: var(--surface);
  color: var(--text-muted); font-size: 10.5px; letter-spacing: 0.09em;
  text-transform: uppercase; white-space: nowrap;
}
.fmap-group-label.left { left: 12px; }
.fmap-group-label.right { right: 12px; }

.fmap-links { position: absolute; left: 0; top: 0; pointer-events: none; overflow: visible; }
.fmap-link .fmap-line { stroke-width: 2; stroke-linecap: round; }
.fmap-link.nat .fmap-line { stroke-dasharray: 5 4; }
.fmap-link { opacity: 0.9; transition: opacity 0.12s ease; }
.fmap-canvas.focused .fmap-link { opacity: 0.12; }
.fmap-canvas.focused .fmap-link.on { opacity: 1; }

.fmap-node {
  --accent: var(--text-muted);
  position: absolute; box-sizing: border-box; height: 54px;
  display: flex; align-items: center; gap: 10px; padding: 8px 12px; text-align: left;
  border: 1px solid var(--border); border-radius: 9px; background: var(--surface);
  font: inherit; color: var(--text-primary);
  transition: border-color 0.12s ease, opacity 0.12s ease, background 0.12s ease;
}
.fmap-bar { width: 4px; height: 28px; border-radius: 2px; background: var(--accent); flex: none; }
.fmap-text { min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.fmap-title {
  font-weight: 600; font-size: 13px; line-height: 1.2;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.fmap-sub {
  color: var(--text-muted); font-size: 11.5px; line-height: 1.2;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
/* rule ports: the third line of a node */
.fmap-ports {
  font-size: 11.5px; line-height: 1.2; color: var(--accent);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.fmap-ports.empty { color: var(--text-muted); }
/* NAT nodes: address before and after translation, tabular figures line up better */
.fmap-dnat .fmap-title, .fmap-dnat .fmap-sub,
.fmap-snat .fmap-sub { font-variant-numeric: tabular-nums; }
.fmap-dnat .fmap-sub, .fmap-snat .fmap-sub { color: var(--text-secondary); }
/* translation marker in the connections table */
.conn-table .nat-chip { font-size: 9.5px; padding: 0 4px; vertical-align: middle; opacity: 0.85; }
.fmap-rule { cursor: pointer; }
.fmap-rule:hover, .fmap-node.on { border-color: var(--accent); }
.fmap-rule.selected { border-color: var(--accent); background: var(--select); }
.fmap-canvas.focused .fmap-node { opacity: 0.35; }
.fmap-canvas.focused .fmap-node.on { opacity: 1; }

.fmap-legend {
  display: flex; align-items: center; gap: 7px;
  margin-top: 10px; color: var(--text-muted); font-size: 11.5px;
}
.fmap-legend-dash {
  width: 26px; height: 0; border-top: 2px dashed var(--text-muted); flex: none;
}

/* "Settings" section */
.set-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 12px 24px; }
.set-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; min-height: 34px; }
.set-row .set-label { color: var(--text-secondary); font-size: 13.5px; }
.set-row .set-label em { color: var(--text-muted); font-style: normal; font-size: 12.5px; }
.set-row input.search, .set-row select { min-width: 150px; max-width: 230px; }
.set-row input[type="number"] { width: 110px; min-width: 0; text-align: right; font-variant-numeric: tabular-nums; }
.set-check { justify-content: flex-start; cursor: pointer; }
.dropdown-btn {
  display: inline-flex; align-items: center; justify-content: space-between; gap: 10px;
  min-width: 150px; max-width: 230px; padding: 7px 10px;
  background: var(--page); border: 1px solid var(--border); border-radius: 8px;
  color: var(--text-primary); cursor: pointer; font-family: inherit; font-size: 13px;
}
.dropdown-btn:hover { background: var(--hover); }
.dropdown-btn .caret { color: var(--text-muted); font-size: 11px; }
.dropdown-btn > span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.col-picker .iface-dev { color: var(--text-muted); font-size: 11.5px; margin-left: auto; }
.set-check input { accent-color: var(--series-down); width: 16px; height: 16px; }
.preset-btns { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
.preset-btns .preset.active {
  border-color: var(--series-down); color: var(--text-primary);
  background: var(--select); font-weight: 600;
}
.set-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-top: 4px; }
.set-hint { color: var(--text-muted); font-size: 12.5px; }
.set-warn {
  margin-top: 12px; padding: 9px 12px; border-radius: 8px; font-size: 12.5px;
  color: var(--series-up); border: 1px solid var(--border);
  background: color-mix(in srgb, var(--series-up) 8%, var(--surface-1));
}
#view-settings .card { max-width: 900px; }

#wg-table { table-layout: fixed; width: 100%; min-width: 760px; }
#wg-table th {
  position: relative; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  /* otherwise the browser selects text instead of dragging the column */
  user-select: none; cursor: grab;
}
#wg-table th:active { cursor: grabbing; }
#wg-table th .col-resizer { cursor: col-resize; }
#wg-table td { overflow: hidden; text-overflow: ellipsis; }
#wg-table .col-filler { width: auto; }
#wg-table th[data-col="name"] { width: 140px; }
#wg-table th[data-col="status"] { width: 100px; }
#wg-table th[data-col="endpoint"] { width: 175px; }
#wg-table th[data-col="ips"] { width: 135px; }
#wg-table th[data-col="hs"] { width: 118px; }
#wg-table th[data-col="rx"], #wg-table th[data-col="tx"],
#wg-table th[data-col="trx"], #wg-table th[data-col="ttx"] { width: 92px; }
#wg-table tbody tr.wg-row { cursor: pointer; }
#wg-table tbody tr.wg-row:hover { background: var(--hover); }
#wg-table tbody tr.wg-row.selected { background: var(--select); }

.wg-status { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.wg-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; background: var(--text-muted); }
.wg-dot.online { background: #0ca30c; }
#wg-table td.dim { color: var(--text-secondary); }
.foot { color: var(--text-muted); font-size: 12.5px; text-align: center; }

@media (max-width: 900px) {
  .col-mac, td.mac { display: none; }
}

/* ---------- bottom detail panel ---------- */

.detail-panel {
  position: fixed; left: 210px; right: 0; bottom: 0; z-index: 20;
  height: min(46vh, 420px);
  background: var(--surface-1); color: var(--text-primary);
  border-top: 1px solid var(--border);
  box-shadow: 0 -6px 24px rgba(0, 0, 0, 0.18);
  display: flex; flex-direction: column;
}
.detail-panel[hidden] { display: none; }

.detail-resizer {
  position: absolute; top: -5px; left: 0; right: 0; height: 10px;
  cursor: ns-resize; z-index: 21;
}
.detail-resizer::after {
  content: ""; position: absolute; left: 0; right: 0; top: 4px; height: 2px;
  background: transparent;
}
.detail-resizer:hover::after, .detail-resizer.dragging::after { background: var(--series-down); }
@media (max-width: 800px) { .detail-panel { left: 0; } }
.detail-head {
  display: flex; align-items: center; gap: 18px;
  padding: 10px 18px 0; border-bottom: 1px solid var(--grid);
  flex-wrap: wrap;
}
.detail-title-box { display: flex; align-items: baseline; gap: 8px; padding-bottom: 10px; min-width: 180px; }
.detail-title { font-weight: 650; font-size: 15px; }
.detail-sub { color: var(--text-muted); font-size: 13px; }

.tabs { display: flex; gap: 2px; }
.tab {
  background: none; border: none; cursor: pointer; font-family: inherit;
  font-size: 13.5px; color: var(--text-secondary);
  padding: 8px 14px 10px; border-bottom: 2px solid transparent;
}
.tab:hover { color: var(--text-primary); }
.tab.active { color: var(--text-primary); border-bottom-color: var(--series-down); font-weight: 600; }

.detail-close {
  background: none; border: none; cursor: pointer; color: var(--text-muted);
  font-size: 15px; padding: 6px 10px 10px; margin-left: auto;
}
.detail-close:hover { color: var(--text-primary); }

/* scrolling lives inside the tabs — otherwise the sticky table header breaks */
.detail-body { flex: 1; overflow: hidden; padding: 14px 18px; display: flex; flex-direction: column; }
.tab-pane { flex: 1; min-height: 0; }
#tab-general { overflow: auto; }
#tab-conns { display: flex; flex-direction: column; min-height: 0; }
#tab-conns[hidden] { display: none; }
.tab-pane[hidden] { display: none; }
#tab-histo { display: flex; flex-direction: column; }
#tab-histo[hidden] { display: none; }

.kv {
  display: grid; grid-template-columns: max-content 1fr; gap: 7px 22px;
  align-items: baseline; max-width: 640px;
}
.kv dt { color: var(--text-muted); font-size: 13px; }
.kv dd { font-variant-numeric: tabular-nums; }
.kv dd .rate-unit { color: var(--text-muted); font-size: 12px; margin-left: 3px; }

.col-picker {
  position: fixed; z-index: 60; min-width: 180px; max-height: 60vh; overflow-y: auto;
  background: var(--surface-1); border: 1px solid var(--border); border-radius: 10px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.22); padding: 8px; color: var(--text-primary);
  display: flex; flex-direction: column; gap: 2px;
}
.col-picker[hidden] { display: none; }
.col-picker label {
  display: flex; align-items: center; gap: 8px; padding: 5px 8px; border-radius: 6px;
  cursor: pointer; font-size: 13px;
}
.col-picker label:hover { background: var(--hover); }
.col-picker input { accent-color: var(--series-down); }

.conn-toolbar { display: flex; align-items: center; justify-content: flex-end; gap: 14px; margin-bottom: 4px; }
.conn-filter {
  display: inline-flex; align-items: center; gap: 7px; cursor: pointer;
  color: var(--text-secondary); font-size: 12.5px;
}
/* both filters pinned left, "Columns" to the right */
.conn-filter:last-of-type { margin-right: auto; }
.conn-toolbar { flex-wrap: wrap; }
.conn-filter input { accent-color: var(--series-down); width: 15px; height: 15px; }
.conn-hidden-note { color: var(--text-muted); font-size: 12px; padding: 6px 2px 0; }

.pager {
  display: flex; align-items: center; justify-content: center;
  gap: 12px; padding: 10px 4px 2px;
  font-size: 12.5px; color: var(--text-muted);
}
.pager[hidden] { display: none; }
.pager-btn {
  background: var(--hover); border: 1px solid var(--border);
  color: var(--text-primary); border-radius: 6px; cursor: pointer;
  min-width: 30px; height: 28px; padding: 0 8px; font-size: 13px;
}
.pager-btn:hover:not(:disabled) { background: var(--select); }
.pager-btn:disabled { opacity: 0.4; cursor: default; }
.pager-range { font-variant-numeric: tabular-nums; }
.pager-pages { color: var(--text-secondary); }

.conn-holder { flex: 1; min-height: 0; overflow: auto; }
/* headers stay visible while the list scrolls */
.conn-table thead th {
  position: sticky; top: 0; z-index: 3;
  background: var(--surface-1);
  box-shadow: inset 0 -1px 0 var(--grid);
}
.conn-table { font-size: 12.5px; width: 100%; table-layout: fixed; }
.conn-table th { position: relative; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.conn-table td { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
/* outbound — green background, inbound — light red; the arrow repeats the meaning */
.conn-table tr.conn-out td { background: rgba(12, 163, 12, 0.07); }
.conn-table tr.conn-in td { background: rgba(208, 59, 59, 0.07); }
/* local connections (both sides inside the network) are left uncoloured */
.conn-table tr.conn-local td { background: transparent; }
.conn-table tbody tr.conn-local:hover td { background: var(--hover); }

/* on hover the same tint becomes more noticeable */
.conn-table tbody td { transition: background-color 0.12s ease; }
.conn-table tbody tr.conn-out:hover td { background: rgba(12, 163, 12, 0.18); }
.conn-table tbody tr.conn-in:hover td { background: rgba(208, 59, 59, 0.18); }
.conn-table td.dir { font-weight: 700; text-align: center; font-size: 23px; line-height: 1; padding-top: 2px; padding-bottom: 2px; }
.conn-table tr.conn-out td.dir { color: #0ca30c; }
.conn-table tr.conn-in td.dir { color: #d03b3b; }
.conn-table th { border-bottom: 1px solid var(--axis); position: sticky; top: -14px; background: var(--surface-1); }
.conn-table td { padding: 4px 10px; border-bottom: 1px solid var(--grid); }
.conn-empty { color: var(--text-muted); }
.proto-chip {
  display: inline-block; padding: 1px 7px; border-radius: 999px; font-size: 11px;
  border: 1px solid var(--border); color: var(--text-secondary); text-transform: uppercase;
}

.histo-head { display: flex; justify-content: flex-end; margin-bottom: 6px; }
.histo-wrap { flex: 1; height: auto; min-height: 140px; }

/* ---------- phones ---------- */
@media (max-width: 640px) {
  .viz-root { padding: 10px 8px 24px; gap: 10px; }
  .side-brand { font-size: 16px; }
  .side-item { font-size: 12.5px; gap: 6px; }

  .topbar { gap: 8px; flex-wrap: nowrap; align-items: flex-start; }
  .top-stats { flex: 1; gap: 4px 14px; font-size: 12.5px; min-width: 0; }
  #iface-badge { display: none; }         /* does not fit and is not critical */
  .topbar-right { flex: 0 0 auto; }

  .card { padding: 11px 10px; border-radius: 10px; }
  .card-head { margin-bottom: 8px; gap: 8px; }
  .card-head h2 { font-size: 14.5px; }
  .card-head-right { width: 100%; gap: 8px; flex-wrap: wrap; }
  .unit-label { flex: 1 1 auto; }
  .unit-select { flex: 1; min-width: 0; }
  .search { min-width: 0; flex: 1 1 140px; }
  .cols-btn { flex: 0 0 auto; }

  .chart-wrap { height: 150px; }
  .legend { font-size: 12px; gap: 10px; }

  /* tables: smaller, with a sticky first column on horizontal scroll */
  #hosts-table { min-width: 520px; font-size: 12.5px; }
  #hosts-table th, #hosts-table td { padding: 6px 8px; }
  #hosts-table th:first-child, #hosts-table td:first-child {
    position: sticky; left: 0; z-index: 2; background: var(--surface-1);
  }
  #hosts-table tbody tr.host-row:hover td:first-child { background: var(--page); }
  #hosts-table tbody tr.host-row.selected td:first-child { background: var(--page); }
  #wg-table { min-width: 560px; font-size: 12.5px; }
  #wg-table th, #wg-table td { padding: 6px 8px; white-space: nowrap; }
  #wg-table th:first-child, #wg-table td:first-child {
    position: sticky; left: 0; z-index: 2; background: var(--surface-1);
  }
  .conn-table { min-width: 900px; font-size: 12px; }
  .conn-table td, .conn-table th { padding: 4px 8px; }

  /* detail panel: taller and full width */
  .detail-panel { left: 0; height: min(72vh, 560px); }
  .detail-head { padding: 8px 12px 0; gap: 8px; }
  .detail-title { font-size: 14px; }
  .detail-sub { display: none; }
  .tabs { order: 3; width: 100%; overflow-x: auto; }
  .tab { padding: 7px 10px 9px; font-size: 13px; white-space: nowrap; }
  .detail-close { order: 2; }
  .detail-body { padding: 10px 12px; }
  .kv { grid-template-columns: 1fr; gap: 2px 0; }
  .kv dt { margin-top: 8px; }

  /* settings: label on top, field full width */
  .set-grid { grid-template-columns: 1fr; gap: 10px; }
  .set-row {
    flex-direction: column; align-items: flex-start; justify-content: flex-start;
    gap: 5px; min-height: 0;
  }
  .set-row .set-label { width: 100%; text-align: left; }
  .set-row input.search, .set-row select, .set-row .dropdown-btn,
  .set-row input[type="number"] {
    /* flex: none — otherwise fields inherit flex from .search and stretch vertically */
    max-width: none; width: 100%; flex: none; height: auto; text-align: left;
  }
  .set-check { flex-direction: row; align-items: center; gap: 8px; }
  .set-check .set-label { width: auto; }
  .set-actions { gap: 8px; }
  #view-settings .card { max-width: none; }

  .col-picker, .lang-menu { max-width: calc(100vw - 16px); }

  /* configured rules: restack the row into three lines, otherwise it runs off sideways */
  .cfg-head { display: none; }
  .cfg-row {
    grid-template-columns: auto auto minmax(0, 1fr); gap: 3px 8px; padding: 8px 6px;
    border-bottom: 1px solid var(--grid); border-radius: 0;
  }
  .cfg-row .cfg-act { grid-column: 1; grid-row: 1; }
  .cfg-row .cfg-iface { grid-column: 2; grid-row: 1; }
  .cfg-row .cfg-use { grid-column: 3; grid-row: 1; }
  .cfg-row .cfg-addr.src { grid-column: 1 / 3; grid-row: 2; }
  .cfg-row .cfg-arrow { display: none; }
  .cfg-row .cfg-addr.dst { grid-column: 3; grid-row: 2; }
  .cfg-row .cfg-addr.dst::before { content: "→ "; color: var(--text-muted); }
  .cfg-row .cfg-descr { grid-column: 1 / -1; grid-row: 3; color: var(--text-muted); }

  /* the diagram is wider than the screen — scroll it, not the whole page */
  .fmap-canvas { margin: 0; }
}

/* dark theme: make connection hover a bit more noticeable */
@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme="light"])) .conn-table tbody tr.conn-out:hover td { background: rgba(12, 163, 12, 0.26); }
  :root:where(:not([data-theme="light"])) .conn-table tbody tr.conn-in:hover td { background: rgba(208, 59, 59, 0.26); }
}
:root[data-theme="dark"] .conn-table tbody tr.conn-out:hover td { background: rgba(12, 163, 12, 0.26); }
:root[data-theme="dark"] .conn-table tbody tr.conn-in:hover td { background: rgba(208, 59, 59, 0.26); }

.side-foot { display: flex; align-items: baseline; gap: 6px; }
.side-ver {
  font-size: 11px;
  opacity: .55;
  letter-spacing: .02em;
  white-space: nowrap;
}

/* legend key mirroring a dashed line, so a series can be matched to its entry */
.key-dashed {
  background-image: repeating-linear-gradient(
    90deg, transparent 0 3px, var(--surface-1) 3px 5px);
}

/* small circled question mark carrying an explanatory title */
.hint-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 15px;
  height: 15px;
  margin-left: 6px;
  border: 1px solid var(--axis);
  border-radius: 50%;
  color: var(--text-muted);
  font-size: 10px;
  line-height: 1;
  cursor: help;
  vertical-align: middle;
}
.hint-mark:hover { color: var(--text); border-color: var(--text-muted); }

/* legend entries double as a filter once the chart carries several series */
button.legend-item {
  background: none;
  border: none;
  padding: 2px 4px;
  margin: -2px -4px;
  border-radius: 6px;
  font: inherit;
  color: inherit;
  cursor: pointer;
  transition: opacity .12s;
}
button.legend-item:hover { background: var(--hover); }
button.legend-item.legend-off { opacity: .38; }

/* ---------- "Blocked" section ---------- */

.blk-tiles { display: flex; gap: 14px; margin-bottom: 14px; flex-wrap: wrap; }
.blk-tile {
  flex: 1 1 200px;
  background: var(--surface-1); border: 1px solid var(--border);
  border-radius: 12px; padding: 14px 16px;
}
.blk-k { font-size: 12px; color: var(--text-muted); }
.blk-v { font-size: 26px; font-weight: 650; margin-top: 4px; font-variant-numeric: tabular-nums; }
.blk-s { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

/* only the attempts tile changes colour, and only when it is not zero —
   a permanently red panel stops being read */
.blk-tile.blk-hot { border-color: color-mix(in srgb, var(--series-up) 45%, var(--border)); }
.blk-tile.blk-hot .blk-v { color: var(--series-up); }

.blk-pill {
  display: inline-block; padding: 1px 8px; border-radius: 999px;
  font-size: 11px; white-space: nowrap;
  border: 1px solid var(--border); color: var(--text-secondary);
}
.blk-pill-attempt {
  border-color: color-mix(in srgb, var(--series-up) 55%, var(--border));
  color: var(--series-up);
}
.blk-noise-row td { opacity: .62; }

.blk-empty {
  padding: 22px 4px; text-align: center;
  color: var(--text-muted); font-size: 13px;
}

/* the unit in a rate column header: present but recessive, so the name reads first */
.th-unit { font-size: 11px; color: var(--text-muted); font-weight: 400; }

/* A row that has just appeared fades in where it is; rows that merely changed
   places are moved by flipRows in app.js, which animates the transform. */
tr.row-enter { opacity: 0; }
tbody tr.host-row, .conn-table tbody tr { transition: opacity 220ms ease; }

/* the row is lifted onto its own layer only while it is actually travelling —
   flipRows stamps data-flip for exactly that long */
tbody tr[data-flip] { will-change: transform; }

@media (prefers-reduced-motion: reduce) {
  tbody tr.host-row, .conn-table tbody tr { transition: none; }
}

/* the notice at the top of Settings on a public demonstration */
.demo-note {
  margin: 0 0 16px; padding: 10px 14px; border-radius: 8px;
  background: var(--hover); color: var(--text-muted);
  border-left: 3px solid var(--accent); font-size: 13px; line-height: 1.5;
}
body.demo #view-settings :disabled { opacity: .6; }