/* ==========================================================================
   DEN-SKY portal — marine control-room design system
   No framework. Dark default + light (prefers-color-scheme AND manual toggle).
   Theme resolution order: :root (dark) -> @media light (only if no manual
   choice) -> [data-theme] (manual, always wins).
   ========================================================================== */

:root {
  /* palette — deep-water control room */
  --bg:        #0b1017;
  --bg-2:      #0f1620;
  --bg-card:   #141d29;
  --bg-tile:   #18222f;
  --bg-inset:  #0d141d;
  --border:    #263344;
  --border-2:  #34455a;
  --fg:        #dbe3ec;
  --fg-dim:    #8493a4;
  --fg-faint:  #5a6b7d;

  --accent:    #4ea1ff;
  --accent-2:  #6ee7d0;
  --ok:        #35c37e;
  --warn:      #e6b03c;
  --bad:       #f0584a;
  --crit:      #f0584a;
  --info:      #4ea1ff;

  --ok-soft:   color-mix(in srgb, var(--ok) 16%, transparent);
  --warn-soft: color-mix(in srgb, var(--warn) 18%, transparent);
  --bad-soft:  color-mix(in srgb, var(--bad) 18%, transparent);
  --accent-soft: color-mix(in srgb, var(--accent) 16%, transparent);

  --shadow: 0 1px 2px rgba(0,0,0,.30), 0 8px 24px -12px rgba(0,0,0,.55);
  --shadow-lg: 0 12px 40px -12px rgba(0,0,0,.6);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;

  /* fluid type scale */
  --fs-xs:  clamp(.68rem, .66rem + .1vw, .74rem);
  --fs-sm:  clamp(.8rem, .77rem + .15vw, .88rem);
  --fs-base: clamp(.9rem, .87rem + .2vw, .98rem);
  --fs-lg:  clamp(1.05rem, 1rem + .35vw, 1.2rem);
  --fs-xl:  clamp(1.3rem, 1.15rem + .7vw, 1.75rem);
  --fs-2xl: clamp(1.8rem, 1.5rem + 1.4vw, 2.6rem);
  --fs-num: clamp(1.5rem, 1.25rem + 1.1vw, 2.15rem);

  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, system-ui, sans-serif;

  --maxw: 1400px;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --bg:      #eef2f6;
    --bg-2:    #e7edf3;
    --bg-card: #ffffff;
    --bg-tile: #f4f7fa;
    --bg-inset:#eaeff4;
    --border:  #d6dee7;
    --border-2:#c1ccd8;
    --fg:      #17222f;
    --fg-dim:  #566373;
    --fg-faint:#8a97a6;
    --shadow:  0 1px 2px rgba(20,40,70,.06), 0 8px 24px -14px rgba(20,40,70,.20);
    --shadow-lg: 0 16px 44px -18px rgba(20,40,70,.28);
    color-scheme: light;
  }
}
:root[data-theme="light"] {
  --bg:      #eef2f6;
  --bg-2:    #e7edf3;
  --bg-card: #ffffff;
  --bg-tile: #f4f7fa;
  --bg-inset:#eaeff4;
  --border:  #d6dee7;
  --border-2:#c1ccd8;
  --fg:      #17222f;
  --fg-dim:  #566373;
  --fg-faint:#8a97a6;
  --shadow:  0 1px 2px rgba(20,40,70,.06), 0 8px 24px -14px rgba(20,40,70,.20);
  --shadow-lg: 0 16px 44px -18px rgba(20,40,70,.28);
  color-scheme: light;
}
:root[data-theme="dark"] { color-scheme: dark; }

/* --- reset ---------------------------------------------------------------- */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1200px 600px at 80% -10%, color-mix(in srgb, var(--accent) 7%, transparent), transparent 60%),
    var(--bg);
  color: var(--fg);
  font: var(--fs-base)/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.2; font-weight: 650; }
h1 { font-size: var(--fs-xl); margin: 0; letter-spacing: -.01em; }
h2 { font-size: var(--fs-lg); margin: 1.8rem 0 .8rem; letter-spacing: -.005em; }
h3 { font-size: var(--fs-base); margin: 0; }
p { margin: .4rem 0; }
.muted { color: var(--fg-dim); }
.faint { color: var(--fg-faint); }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.num  { font-variant-numeric: tabular-nums; }
.nowrap { white-space: nowrap; }
button, select, input { font-family: inherit; }

/* --- top bar -------------------------------------------------------------- */
.topbar {
  position: sticky; top: 0; z-index: 500;
  display: flex; align-items: center; gap: 1.2rem;
  padding: .6rem clamp(.8rem, 3vw, 1.6rem);
  background: color-mix(in srgb, var(--bg-card) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--border);
}
.brand {
  display: flex; align-items: center; gap: .55rem;
  font-weight: 800; letter-spacing: .12em; color: var(--fg); font-size: .95rem;
}
.brand:hover { text-decoration: none; }
.brand svg { width: 22px; height: 22px; color: var(--accent); }
.topbar nav { display: flex; gap: .3rem; }
.topbar nav a {
  color: var(--fg-dim); padding: .35rem .7rem; border-radius: 8px;
  font-weight: 550; font-size: var(--fs-sm);
}
.topbar nav a:hover { color: var(--fg); background: var(--bg-tile); text-decoration: none; }
.topbar nav a.active { color: var(--accent); background: var(--accent-soft); }
.topbar .spacer { flex: 1; }

.live-flag {
  display: inline-flex; align-items: center; gap: .45rem;
  font-size: var(--fs-xs); color: var(--fg-dim);
  padding: .28rem .6rem; border: 1px solid var(--border); border-radius: 999px;
  background: var(--bg-tile);
}
.live-flag .pulse {
  width: 8px; height: 8px; border-radius: 50%; background: var(--fg-faint);
  box-shadow: 0 0 0 0 transparent;
}
.live-flag.on .pulse { background: var(--ok); animation: pulse 2s ease-out infinite; }
.live-flag.stale .pulse { background: var(--warn); }
.live-flag.off .pulse { background: var(--bad); }
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in srgb, var(--ok) 55%, transparent); }
  70%  { box-shadow: 0 0 0 7px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
@media (prefers-reduced-motion: reduce) {
  .live-flag.on .pulse { animation: none; }
}

.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 9px;
  background: var(--bg-tile); border: 1px solid var(--border); color: var(--fg-dim);
  cursor: pointer; transition: color .15s, border-color .15s;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); }
.theme-toggle svg { width: 17px; height: 17px; }
.theme-toggle .i-sun { display: none; }
:root[data-theme="light"] .theme-toggle .i-sun,
:root:not([data-theme]) .theme-toggle .i-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .i-moon { display: block; }
:root[data-theme="dark"] .theme-toggle .i-sun { display: none; }
:root[data-theme="light"] .theme-toggle .i-moon { display: none; }
:root[data-theme="light"] .theme-toggle .i-sun { display: block; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .theme-toggle .i-moon { display: none; }
  :root:not([data-theme]) .theme-toggle .i-sun { display: block; }
}

/* --- layout --------------------------------------------------------------- */
main { max-width: var(--maxw); margin: 0 auto; padding: clamp(1rem, 3vw, 1.8rem); }
.page-head {
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
  margin-bottom: 1.2rem;
}
.page-head .grow { flex: 1; }
.crumbs { font-size: var(--fs-sm); color: var(--fg-dim); }
.crumbs a { color: var(--fg-dim); }
.crumbs a:hover { color: var(--accent); }
.sub { font-size: var(--fs-sm); font-weight: 400; margin-left: .6rem; color: var(--fg-dim); }

.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  background: var(--bg-tile); color: var(--fg);
  border: 1px solid var(--border); border-radius: 8px;
  padding: .4rem .8rem; font-size: var(--fs-sm); font-weight: 550; cursor: pointer;
  transition: border-color .15s, color .15s, background .15s;
}
.btn:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.btn svg { width: 15px; height: 15px; }

/* --- KPI strip ------------------------------------------------------------ */
.kpis {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: .8rem; margin-bottom: 1.4rem;
}
.kpi {
  background: linear-gradient(180deg, var(--bg-card), color-mix(in srgb, var(--bg-card) 88%, var(--bg-inset)));
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: .85rem 1rem; box-shadow: var(--shadow);
  position: relative; overflow: hidden;
}
.kpi::before {
  content: ""; position: absolute; inset: 0 auto 0 0; width: 3px;
  background: var(--accent); opacity: .8;
}
.kpi.k-ok::before { background: var(--ok); }
.kpi.k-warn::before { background: var(--warn); }
.kpi.k-bad::before { background: var(--bad); }
.kpi-label { font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .07em; color: var(--fg-dim); }
.kpi-value { font-size: var(--fs-num); font-weight: 700; margin-top: .15rem; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.kpi-value .unit { font-size: .5em; font-weight: 500; color: var(--fg-dim); margin-left: .15rem; }
.kpi-sub { font-size: var(--fs-xs); color: var(--fg-dim); margin-top: .1rem; }
.kpi-sev { display: flex; gap: .5rem; margin-top: .3rem; flex-wrap: wrap; }
.kpi-sev span { font-size: var(--fs-xs); font-weight: 600; display: inline-flex; align-items: center; gap: .25rem; }
.kpi-sev .d { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }

/* --- generic cards -------------------------------------------------------- */
.panel {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.panel-pad { padding: 1rem 1.1rem; }
.panel-head {
  display: flex; align-items: center; gap: .6rem;
  padding: .7rem 1.1rem; border-bottom: 1px solid var(--border);
}
.panel-head h2, .panel-head h3 { margin: 0; }
.panel-head .grow { flex: 1; }

.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.split { display: grid; gap: 1rem; grid-template-columns: 1.6fr 1fr; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }

/* --- fleet cards ---------------------------------------------------------- */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1rem; }
.boat-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: .9rem 1rem; box-shadow: var(--shadow);
  transition: border-color .18s, transform .18s, box-shadow .18s;
  position: relative; display: flex; flex-direction: column; gap: .55rem;
}
.boat-card:hover { border-color: var(--border-2); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.boat-card.is-offline { opacity: .82; }
.boat-card .bc-head { display: flex; align-items: center; gap: .5rem; }
.boat-card .bc-title { font-size: var(--fs-lg); font-weight: 650; color: var(--fg); flex: 1; }
.boat-card .bc-title:hover { color: var(--accent); text-decoration: none; }
.stat-dot { width: 11px; height: 11px; border-radius: 50%; flex: none; box-shadow: 0 0 0 3px transparent; }
.stat-dot.ok   { background: var(--ok); box-shadow: 0 0 0 3px var(--ok-soft); }
.stat-dot.warn { background: var(--warn); box-shadow: 0 0 0 3px var(--warn-soft); }
.stat-dot.bad, .stat-dot.off { background: var(--bad); box-shadow: 0 0 0 3px var(--bad-soft); }
.bc-age { font-size: var(--fs-xs); color: var(--fg-dim); font-variant-numeric: tabular-nums; }

.metric-row { display: flex; gap: .8rem; flex-wrap: wrap; }
.metric {
  flex: 1 1 auto; min-width: 66px;
  background: var(--bg-tile); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: .4rem .55rem;
}
.metric .m-label { font-size: var(--fs-xs); color: var(--fg-dim); text-transform: uppercase; letter-spacing: .05em; }
.metric .m-value { font-size: 1.15rem; font-weight: 650; font-variant-numeric: tabular-nums; line-height: 1.15; }
.metric .m-value .unit { font-size: .62em; color: var(--fg-dim); font-weight: 500; margin-left: .12rem; }
.metric.redline .m-value { color: var(--bad); }
.metric.warm .m-value { color: var(--warn); }

.eng-pills { display: flex; gap: .4rem; flex-wrap: wrap; }
.pill {
  display: inline-flex; align-items: center; gap: .3rem;
  background: var(--bg-tile); border: 1px solid var(--border);
  border-radius: 999px; padding: .12rem .6rem; font-size: var(--fs-xs);
  font-variant-numeric: tabular-nums;
}
.pill .pd { width: 6px; height: 6px; border-radius: 50%; background: var(--ok); }
.pill.warm .pd { background: var(--warn); }
.pill.hot .pd { background: var(--bad); }

.spark-wrap { height: 34px; margin-top: auto; }
.bc-foot { display: flex; align-items: center; justify-content: space-between; gap: .5rem; }
.alert-badge {
  display: inline-flex; align-items: center; gap: .3rem;
  color: var(--bad); font-weight: 650; font-size: var(--fs-sm);
}
.alert-badge svg { width: 14px; height: 14px; }
.ok-badge { color: var(--fg-dim); font-size: var(--fs-sm); }

/* --- tiles / readouts ----------------------------------------------------- */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: .8rem; }
.tile {
  background: var(--bg-tile); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: .7rem .85rem;
}
.tile-label { color: var(--fg-dim); font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .06em; }
.tile-value { font-size: var(--fs-num); font-weight: 650; margin-top: .1rem; font-variant-numeric: tabular-nums; letter-spacing: -.01em; }
.tile-value.small { font-size: 1.05rem; word-break: break-word; }
.unit { font-size: .55em; color: var(--fg-dim); font-weight: 500; margin-left: .12rem; }

/* --- gauges (SVG hosts) --------------------------------------------------- */
.gauge-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 1rem; }
.gauge-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: .9rem; box-shadow: var(--shadow);
  display: flex; flex-direction: column; align-items: center; gap: .3rem;
}
.gauge-card h3 { color: var(--fg-dim); font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .06em; font-weight: 600; }
.gauge-card svg { width: 100%; height: auto; max-width: 220px; }
.g-track { fill: none; stroke: var(--bg-inset); }
.g-arc   { fill: none; stroke: var(--accent); stroke-linecap: round; transition: stroke-dashoffset .4s ease, stroke .3s; }
.g-tick  { stroke: var(--border-2); }
.g-needle { stroke: var(--fg); stroke-linecap: round; transition: transform .4s cubic-bezier(.34,1.4,.5,1); transform-origin: center; }
.g-hub   { fill: var(--fg); }
.g-readout { fill: var(--fg); font-weight: 700; font-variant-numeric: tabular-nums; }
.g-unit  { fill: var(--fg-dim); }
.g-redzone { fill: none; stroke: var(--bad); opacity: .85; }

/* horizontal band bar (coolant/volts) */
.bandbar { width: 100%; }
.bandbar-track { height: 12px; border-radius: 6px; overflow: hidden; display: flex; background: var(--bg-inset); }
.bandbar-track i { height: 100%; display: block; }
.bandbar-track i.b-ok { background: color-mix(in srgb, var(--ok) 55%, transparent); }
.bandbar-track i.b-warn { background: color-mix(in srgb, var(--warn) 55%, transparent); }
.bandbar-track i.b-bad { background: color-mix(in srgb, var(--bad) 55%, transparent); }
.bandbar-marker { position: relative; height: 0; }
.bandbar-marker span {
  position: absolute; top: -15px; width: 3px; height: 18px; border-radius: 2px;
  background: var(--fg); transform: translateX(-50%); transition: left .4s ease;
  box-shadow: 0 0 0 2px var(--bg-card);
}
.bandbar-scale { display: flex; justify-content: space-between; font-size: var(--fs-xs); color: var(--fg-faint); margin-top: .2rem; }

/* --- charts --------------------------------------------------------------- */
.chart-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 1rem; }
.chart-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden;
}
.chart-card .ch-head { padding: .6rem .9rem .1rem; display: flex; align-items: baseline; gap: .5rem; }
.chart-card .ch-head h3 { font-size: var(--fs-sm); font-weight: 600; color: var(--fg-dim); text-transform: uppercase; letter-spacing: .05em; }
.chart-card .ch-last { margin-left: auto; font-variant-numeric: tabular-nums; font-weight: 650; }
.chart-host { padding: .3rem .5rem .6rem; min-height: 150px; }

/* uPlot theming */
.uplot { font-family: var(--sans) !important; width: 100% !important; }
.u-axis { color: var(--fg-dim); }
.u-legend { color: var(--fg-dim); font-size: var(--fs-xs); }
.u-legend .u-marker { border-radius: 2px; }
.u-select { background: var(--accent-soft); }
.u-cursor-x, .u-cursor-y { border-color: var(--border-2) !important; }

/* --- map ------------------------------------------------------------------ */
#map, #track-map { height: clamp(320px, 46vh, 520px); border: 1px solid var(--border); border-radius: var(--radius); z-index: 1; }
.leaflet-container { background: var(--bg-inset); font-family: var(--sans); }
.leaflet-popup-content-wrapper, .leaflet-popup-tip { background: var(--bg-card); color: var(--fg); box-shadow: var(--shadow-lg); }
.leaflet-popup-content-wrapper { border: 1px solid var(--border); border-radius: 10px; }
.leaflet-popup-content { margin: .6rem .8rem; font-size: var(--fs-sm); }
.leaflet-popup-content b { color: var(--fg); }
.leaflet-container a.leaflet-popup-close-button { color: var(--fg-dim); }
.leaflet-bar a { background: var(--bg-card); color: var(--fg); border-color: var(--border); }
.leaflet-bar a:hover { background: var(--bg-tile); }
.leaflet-control-attribution { background: color-mix(in srgb, var(--bg-card) 80%, transparent) !important; color: var(--fg-faint) !important; }
.leaflet-control-attribution a { color: var(--fg-dim) !important; }
.boat-marker {
  width: 16px; height: 16px; border-radius: 50%; border: 2px solid #fff;
  box-shadow: 0 0 0 2px rgba(0,0,0,.35);
}
.boat-marker-label {
  font: 600 11px/1 var(--sans); color: var(--fg); white-space: nowrap;
  text-shadow: 0 1px 2px var(--bg), 0 0 2px var(--bg);
  transform: translate(11px, -8px); display: inline-block;
}

/* --- tables --------------------------------------------------------------- */
.scroll-x { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }
table { border-collapse: collapse; width: 100%; font-size: var(--fs-sm); background: var(--bg-card); }
thead th { position: sticky; top: 0; background: var(--bg-card); z-index: 1; }
th, td { text-align: left; padding: .5rem .75rem; border-bottom: 1px solid var(--border); }
th { color: var(--fg-dim); font-weight: 600; font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .04em; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: color-mix(in srgb, var(--bg-tile) 60%, transparent); }
tr.acked { opacity: .5; }
td.detail, td.mono { font-family: var(--mono); font-size: var(--fs-xs); }
td.detail { max-width: 340px; overflow-wrap: anywhere; }
.num-cell { font-variant-numeric: tabular-nums; text-align: right; }

/* --- severity chips ------------------------------------------------------- */
.sev {
  display: inline-flex; align-items: center; gap: .3rem;
  padding: .12rem .55rem; border-radius: 999px; font-size: var(--fs-xs); font-weight: 650;
  text-transform: capitalize;
}
.sev::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.sev.critical { background: var(--bad-soft); color: var(--bad); }
.sev.warning  { background: var(--warn-soft); color: var(--warn); }
.sev.info     { background: var(--accent-soft); color: var(--info); }

/* --- alert center --------------------------------------------------------- */
.alerts-toolbar { display: flex; gap: .6rem; flex-wrap: wrap; align-items: center; margin-bottom: 1rem; }
.seg { display: inline-flex; background: var(--bg-tile); border: 1px solid var(--border); border-radius: 9px; padding: 2px; }
.seg button {
  border: none; background: transparent; color: var(--fg-dim);
  padding: .3rem .7rem; border-radius: 7px; font-size: var(--fs-sm); cursor: pointer; font-weight: 550;
}
.seg button.active { background: var(--bg-card); color: var(--fg); box-shadow: var(--shadow); }
.seg button:hover:not(.active) { color: var(--fg); }
select {
  background: var(--bg-tile); color: var(--fg); border: 1px solid var(--border);
  border-radius: 8px; padding: .35rem .7rem; font-size: var(--fs-sm); cursor: pointer;
}
select:hover { border-color: var(--border-2); }
.ack-btn {
  border: 1px solid var(--border); background: var(--bg-tile); color: var(--fg);
  border-radius: 7px; padding: .22rem .65rem; font-size: var(--fs-xs); font-weight: 600; cursor: pointer;
}
.ack-btn:hover { border-color: var(--ok); color: var(--ok); }

/* --- buffer / device panels ---------------------------------------------- */
.bar {
  height: 10px; background: var(--bg-inset); border-radius: 6px; overflow: hidden; margin-top: .45rem;
  border: 1px solid var(--border);
}
.bar > i { display: block; height: 100%; border-radius: 6px; background: var(--accent); transition: width .5s ease; }
.bar > i.ok { background: var(--ok); }
.bar > i.warn { background: var(--warn); }
.bar > i.bad { background: var(--bad); }
.kv { display: grid; grid-template-columns: auto 1fr; gap: .35rem 1rem; font-size: var(--fs-sm); }
.kv dt { color: var(--fg-dim); }
.kv dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; font-weight: 550; }

.hero {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1rem;
  margin-bottom: 1.2rem;
}

/* --- empty / skeleton states --------------------------------------------- */
.empty {
  text-align: center; padding: 3rem 1rem; color: var(--fg-dim);
  border: 1px dashed var(--border-2); border-radius: var(--radius); background: var(--bg-card);
}
.empty svg { width: 42px; height: 42px; opacity: .5; margin-bottom: .6rem; }
.empty h3 { color: var(--fg); margin-bottom: .3rem; }
.skeleton {
  background: linear-gradient(90deg, var(--bg-tile) 25%, color-mix(in srgb, var(--bg-tile) 55%, var(--fg-faint)) 50%, var(--bg-tile) 75%);
  background-size: 200% 100%; animation: shimmer 1.4s infinite; border-radius: 6px; color: transparent !important;
}
@keyframes shimmer { to { background-position: -200% 0; } }
@media (prefers-reduced-motion: reduce) { .skeleton { animation: none; } }

/* --- misc ----------------------------------------------------------------- */
.flash-update { animation: flash .6s ease; }
@keyframes flash { from { background: var(--accent-soft); } to { background: transparent; } }
@media (prefers-reduced-motion: reduce) { .flash-update { animation: none; } }

.tag { font-size: var(--fs-xs); padding: .1rem .5rem; border-radius: 6px; background: var(--bg-tile); border: 1px solid var(--border); color: var(--fg-dim); }

@media (max-width: 560px) {
  .topbar nav a { padding: .3rem .5rem; }
  .kpi-value { font-size: 1.5rem; }
}

/* ==========================================================================
   Function-first portal: boat strip, function-tile grid, function pages
   ========================================================================== */

/* --- slim boat selector strip (home) -------------------------------------- */
.boat-strip {
  display: flex; gap: .5rem; overflow-x: auto; padding: .2rem .1rem .6rem;
  margin-bottom: 1.1rem; -webkit-overflow-scrolling: touch; scrollbar-width: thin;
}
.strip-boat {
  display: inline-flex; align-items: center; gap: .5rem; flex: none;
  min-height: 44px; padding: .4rem .9rem; cursor: pointer;
  background: var(--bg-card); color: var(--fg);
  border: 1px solid var(--border); border-radius: 999px;
  font-size: var(--fs-sm); font-weight: 600;
  transition: border-color .15s, background .15s;
}
.strip-boat:hover { border-color: var(--border-2); }
.strip-boat.active { border-color: var(--accent); background: var(--accent-soft); }
.strip-boat.is-offline { opacity: .65; }
.strip-boat.has-alerts .sb-name::after {
  content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 50%;
  background: var(--bad); margin-left: .35rem; vertical-align: middle;
}
.strip-boat .sb-age { font-size: var(--fs-xs); color: var(--fg-dim); font-weight: 500; font-variant-numeric: tabular-nums; }
.strip-skel { padding: .6rem 1rem; border-radius: 999px; }
.boat-strip a.strip-boat { color: var(--fg); }
.boat-strip a.strip-boat:hover { text-decoration: none; }

/* mini 3-LED cluster on each boat button: up/down · alert · flow */
.strip-boat .sb-leds { display: flex; flex-direction: column; gap: 2px; margin-left: .2rem; flex: none; }
.strip-boat .sbl {
  width: 6px; height: 6px; border-radius: 1.5px; box-sizing: border-box;
  background: var(--bg-inset); border: 1px solid var(--border-2);
}
.strip-boat .sbl-up.ok    { background: var(--ok); border-color: transparent; box-shadow: 0 0 4px color-mix(in srgb, var(--ok) 70%, transparent); }
.strip-boat .sbl-up.bad   { background: var(--bad); border-color: transparent; box-shadow: 0 0 4px color-mix(in srgb, var(--bad) 60%, transparent); }
.strip-boat .sbl-alert.on { background: var(--bad); border-color: transparent; box-shadow: 0 0 4px color-mix(in srgb, var(--bad) 60%, transparent); }
.strip-boat .sbl-flow.on  { background: var(--accent); border-color: transparent; box-shadow: 0 0 4px color-mix(in srgb, var(--accent) 60%, transparent); }

/* --- horizontal gateway strip (home + every function page) ---------------- */
.gw-strip {
  display: flex; align-items: center; gap: 1.1rem; flex-wrap: nowrap;
  overflow-x: auto; scrollbar-width: thin; -webkit-overflow-scrolling: touch;
  padding: .45rem .75rem; margin-bottom: 1.1rem;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); box-shadow: var(--shadow);
  font-size: var(--fs-xs); white-space: nowrap;
  transition: opacity .3s, filter .3s;
}
.gw-strip.gw-none  { opacity: .35; filter: saturate(.3); }
.gw-strip.gw-stale { opacity: .55; }

.gw-links { display: flex; gap: .4rem; flex: none; }
.gw-chip {
  display: inline-flex; align-items: center; gap: .32rem; flex: none;
  padding: .17rem .45rem; border-radius: 6px;
  background: var(--bg-tile); border: 1px solid var(--border);
}
.gw-chip .gw-led {
  width: 9px; height: 9px; border-radius: 2px; flex: none;  /* square LED */
  background: var(--fg-faint);
}
.gw-chip.on  .gw-led { background: var(--ok);  box-shadow: 0 0 5px color-mix(in srgb, var(--ok) 70%, transparent); }
.gw-chip.off .gw-led { background: var(--bad); box-shadow: 0 0 5px color-mix(in srgb, var(--bad) 60%, transparent); }
.gw-chip-lbl {
  font-family: var(--mono); font-size: var(--fs-xs); font-weight: 700;
  letter-spacing: .05em; color: var(--fg-faint);
}
.gw-chip.on .gw-chip-lbl  { color: var(--fg); }
.gw-chip.off .gw-chip-lbl { color: var(--bad); }
.gw-chip.gw-flick .gw-led { animation: gw-flick .8s ease-out 1; }
@keyframes gw-flick {
  0%   { filter: brightness(2.4); }
  40%  { filter: brightness(1); }
  60%  { filter: brightness(1.9); }
  100% { filter: brightness(1); }
}
@media (prefers-reduced-motion: reduce) { .gw-chip.gw-flick .gw-led { animation: none; } }

.gw-stats { display: flex; gap: .75rem; align-items: baseline; flex: none; color: var(--fg-dim); }
.gw-stat b {
  font-family: var(--mono); font-weight: 650; color: var(--fg);
  font-variant-numeric: tabular-nums;
}
.gw-stat b.warn { color: var(--warn); }
.gw-stat b.bad  { color: var(--bad); }

.gw-svcs { display: flex; gap: .55rem; align-items: center; flex: none; margin-left: auto; }
.gw-svcs-label {
  font-size: var(--fs-xs); font-weight: 700; letter-spacing: .07em;
  text-transform: uppercase; color: var(--fg-faint);
}
.gw-svc { display: inline-flex; align-items: center; gap: .28rem; font-family: var(--mono); color: var(--fg-dim); }
.gw-svc i { width: 7px; height: 7px; border-radius: 50%; background: var(--fg-faint); flex: none; }
.gw-svc.on i  { background: var(--ok); box-shadow: 0 0 4px color-mix(in srgb, var(--ok) 70%, transparent); }
.gw-svc.off i { background: var(--bad); box-shadow: 0 0 4px color-mix(in srgb, var(--bad) 60%, transparent); }
.gw-svc.off   { color: var(--bad); }

/* one line on desktop; wraps only on mobile */
@media (max-width: 700px) {
  .gw-strip { flex-wrap: wrap; overflow-x: visible; row-gap: .45rem; white-space: normal; }
  .gw-links, .gw-stats, .gw-svcs { flex: 0 1 auto; min-width: 0; flex-wrap: wrap; row-gap: .35rem; }
  .gw-svcs { margin-left: 0; }
}

/* --- function-tile grid (touch-first: 2-col mobile -> 5-col desktop) ------ */
.fn-grid { display: grid; gap: .8rem; grid-template-columns: repeat(2, 1fr); }
@media (min-width: 640px)  { .fn-grid { grid-template-columns: repeat(3, 1fr); gap: 1rem; } }
@media (min-width: 960px)  { .fn-grid { grid-template-columns: repeat(4, 1fr); } }
@media (min-width: 1240px) { .fn-grid { grid-template-columns: repeat(5, 1fr); } }
.fn-tile {
  position: relative; display: flex; flex-direction: column; align-items: flex-start;
  gap: .35rem; min-height: 128px; padding: .95rem 1rem;
  background: var(--bg-card); color: var(--fg);
  border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow), inset 0 0 0 0 transparent;
  transition: transform .15s, box-shadow .15s, border-color .15s, opacity .3s;
  --st: var(--fg-faint);
  border-color: color-mix(in srgb, var(--st) 45%, var(--border));
  box-shadow: var(--shadow), inset 0 0 0 2px color-mix(in srgb, var(--st) 30%, transparent);
}
.fn-tile:hover { text-decoration: none; transform: translateY(-2px); box-shadow: var(--shadow-lg), inset 0 0 0 2px color-mix(in srgb, var(--st) 55%, transparent); }
.fn-tile:active { transform: translateY(0); }
.fn-tile .fn-icon { width: 38px; height: 38px; color: var(--st); }
.fn-tile .fn-icon svg { width: 100%; height: 100%; }
.fn-tile .fn-label {
  font-size: var(--fs-sm); font-weight: 800; letter-spacing: .09em; text-transform: uppercase;
}
.fn-tile .fn-headline {
  font-size: var(--fs-lg); font-weight: 650; font-variant-numeric: tabular-nums;
  color: var(--fg); margin-top: auto; line-height: 1.25; overflow-wrap: anywhere;
}
.fn-tile .fn-status-dot {
  position: absolute; top: .8rem; right: .8rem; width: 11px; height: 11px;
  border-radius: 50%; background: var(--st);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--st) 22%, transparent);
}
.fn-tile.st-ok      { --st: var(--ok); }
.fn-tile.st-warn    { --st: var(--warn); }
.fn-tile.st-alert   { --st: var(--bad); }
.fn-tile.st-alert .fn-status-dot { animation: pulse 1.6s ease-out infinite; }
.fn-tile.st-stale   { --st: var(--fg-faint); }
.fn-tile.st-missing { --st: var(--fg-faint); opacity: .45; }
.fn-tile.st-missing .fn-headline { color: var(--fg-dim); font-size: var(--fs-sm); font-weight: 500; }
@media (prefers-reduced-motion: reduce) { .fn-tile.st-alert .fn-status-dot { animation: none; } }

/* --- big back button ------------------------------------------------------- */
.back-btn {
  display: inline-flex; align-items: center; gap: .45rem;
  min-height: 44px; padding: .5rem 1rem .5rem .7rem;
  background: var(--bg-card); color: var(--fg);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-weight: 700; font-size: var(--fs-base);
  transition: border-color .15s, color .15s;
}
.back-btn:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.back-btn svg { width: 20px; height: 20px; }

/* --- function-page widgets ------------------------------------------------- */
.gear-ind { display: inline-flex; gap: 3px; margin-left: .6rem; }
.gear-ind i {
  display: inline-flex; align-items: center; justify-content: center;
  width: 24px; height: 24px; border-radius: 6px; font-style: normal;
  font-size: var(--fs-xs); font-weight: 800;
  background: var(--bg-inset); color: var(--fg-faint); border: 1px solid var(--border);
}
.gear-ind i.active { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }

.centerbar { margin-top: .3rem; }
.centerbar-track {
  position: relative; height: 12px; border-radius: 6px; overflow: hidden;
  background: var(--bg-inset); border: 1px solid var(--border);
}
.centerbar-track .cb-fill {
  position: absolute; top: 0; bottom: 0; left: 50%; width: 0;
  background: var(--accent); transition: left .3s ease, width .3s ease;
}
.centerbar-track .cb-zero {
  position: absolute; top: -2px; bottom: -2px; left: 50%; width: 2px;
  background: var(--fg-dim); transform: translateX(-50%);
}
.bandbar-scale span:nth-child(2) { color: var(--fg-dim); }

/* signal quality chips + generic signal tables */
.q-chip {
  display: inline-block; padding: .05rem .5rem; border-radius: 999px;
  font-size: var(--fs-xs); font-weight: 650;
  background: var(--bg-tile); border: 1px solid var(--border); color: var(--fg-dim);
}
.q-chip.q-ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, var(--border)); background: var(--ok-soft); }
.q-chip.q-stale { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, var(--border)); background: var(--warn-soft); }
.sig-panel { margin-top: 1.4rem; overflow: hidden; }
.sig-panel .scroll-x { border: none; border-radius: 0; }

/* battery / tank cards */
.battery-card .b-volts { font-size: var(--fs-2xl); }
.battery-card .soc-bar { height: 14px; }
.tank-card .tank-bar { height: 16px; }

@media (max-width: 560px) {
  .fn-tile { min-height: 112px; }
  .fn-tile .fn-icon { width: 32px; height: 32px; }
}

/* ==========================================================================
   SCADA workstation: signal tree + trend area on every function page
   ========================================================================== */
.ws { margin-top: 1.4rem; }
.ws-toolbar {
  display: flex; align-items: center; gap: .6rem; flex-wrap: wrap;
  margin-bottom: .8rem;
}
.ws-toolbar .btn, .ws-toolbar .seg button { min-height: 38px; }
.ws-ranges button { font-variant-numeric: tabular-nums; }
.ws-tree-toggle[aria-expanded="false"] { color: var(--fg-dim); }

.ws-live-btn .ws-live-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--fg-faint);
}
.ws-live-btn.on { border-color: color-mix(in srgb, var(--ok) 55%, var(--border)); color: var(--ok); }
.ws-live-btn.on .ws-live-dot { background: var(--ok); animation: pulse 2s ease-out infinite; }
@media (prefers-reduced-motion: reduce) { .ws-live-btn.on .ws-live-dot { animation: none; } }

.ws-custom[hidden] { display: none; }
.ws-custom {
  display: flex; align-items: center; gap: .5rem; flex-wrap: wrap;
  margin-bottom: .8rem; padding: .6rem .8rem;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm);
}
.ws-custom input[type="datetime-local"] {
  background: var(--bg-tile); color: var(--fg); border: 1px solid var(--border);
  border-radius: 8px; padding: .35rem .55rem; font-size: var(--fs-sm);
  font-family: var(--mono); color-scheme: inherit;
}

.ws-layout { display: grid; grid-template-columns: 290px minmax(0, 1fr); gap: 1rem; align-items: start; }
@media (max-width: 900px) { .ws-layout { grid-template-columns: 1fr; } }

/* --- left pane: collapsible signal tree ---------------------------------- */
.ws-tree-pane {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: .7rem; position: sticky; top: 64px;
  display: flex; flex-direction: column; gap: .55rem;
  max-height: calc(100vh - 96px);
}
@media (max-width: 900px) { .ws-tree-pane { position: static; max-height: 44vh; } }
.ws-tree-pane.collapsed { display: none; }
.ws-tree-pane input[type="search"] {
  background: var(--bg-tile); color: var(--fg); border: 1px solid var(--border);
  border-radius: 8px; padding: .45rem .7rem; font-size: var(--fs-sm); width: 100%;
}
.ws-tree-pane input[type="search"]:focus { outline: none; border-color: var(--accent); }
.ws-tree { overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin; }
.ws-group summary {
  cursor: pointer; user-select: none; padding: .35rem .4rem; border-radius: 6px;
  font-size: var(--fs-xs); font-weight: 700; text-transform: uppercase;
  letter-spacing: .06em; color: var(--fg-dim); list-style: none;
}
.ws-group summary::-webkit-details-marker { display: none; }
.ws-group summary::before {
  content: "▸"; display: inline-block; margin-right: .4rem;
  transition: transform .15s; color: var(--fg-faint);
}
.ws-group[open] > summary::before { transform: rotate(90deg); }
.ws-group summary:hover { background: var(--bg-tile); color: var(--fg); }
.ws-group .ws-group-body { padding-left: .55rem; border-left: 1px solid var(--border); margin-left: .55rem; }
.ws-leaf {
  display: flex; align-items: center; gap: .5rem;
  padding: .3rem .4rem; border-radius: 6px; cursor: pointer;
  font-size: var(--fs-sm); min-height: 32px;
}
.ws-leaf:hover { background: var(--bg-tile); }
.ws-leaf input[type="checkbox"] { accent-color: var(--accent); width: 15px; height: 15px; flex: none; cursor: pointer; }
.ws-leaf .ws-leaf-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ws-leaf .ws-leaf-val { font-size: var(--fs-xs); color: var(--fg-dim); font-variant-numeric: tabular-nums; }

/* --- trend area ----------------------------------------------------------- */
.ws-chart-card { overflow: hidden; }
.ws-chart-host { padding: .3rem .5rem 0; min-height: 380px; }
.ws-foot {
  display: flex; align-items: center; gap: .6rem;
  padding: .3rem .9rem .55rem; font-size: var(--fs-xs);
}
.ws-foot .grow { flex: 1; }
@media (max-width: 700px) { .ws-hints { display: none; } }
.ws-legend {
  display: flex; flex-wrap: wrap; gap: .4rem;
  padding: .6rem .9rem .2rem;
}
.ws-legend:empty { padding: 0; }
.ws-leg {
  display: inline-flex; align-items: center; gap: .45rem;
  background: var(--bg-tile); border: 1px solid var(--border); color: var(--fg);
  border-radius: 999px; padding: .22rem .7rem; font-size: var(--fs-xs);
  cursor: pointer; min-height: 30px;
  transition: border-color .15s;
}
.ws-leg:hover { border-color: var(--bad); }
.ws-leg i { width: 10px; height: 10px; border-radius: 3px; flex: none; }
.ws-leg .ws-leg-key { color: var(--fg-dim); }
.ws-leg .ws-leg-val { font-variant-numeric: tabular-nums; font-size: var(--fs-sm); }
.ws-empty { margin-top: 0; }

/* ==========================================================================
   Alert-rule builder (/boat/{name}/f/rules)
   ========================================================================== */
.rules-layout { display: grid; gap: 1rem; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); align-items: start; }
@media (max-width: 980px) { .rules-layout { grid-template-columns: 1fr; } }
.rules-list { display: flex; flex-direction: column; }
.rule-row {
  display: flex; align-items: flex-start; gap: .8rem;
  padding: .8rem 1.1rem; border-bottom: 1px solid var(--border);
}
.rule-row:last-child { border-bottom: none; }
.rule-row.is-off .rule-main { opacity: .55; }
.rule-main { flex: 1; min-width: 0; }
.rule-title { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; }
.rule-expr {
  display: block; margin: .3rem 0; font-size: var(--fs-xs);
  background: var(--bg-inset); border: 1px solid var(--border); border-radius: 6px;
  padding: .3rem .55rem; overflow-wrap: anywhere;
}
.rule-meta { font-size: var(--fs-xs); }
.rule-actions { display: flex; gap: .4rem; flex-wrap: wrap; }

/* toggle switch */
.switch { position: relative; display: inline-block; flex: none; margin-top: .2rem; cursor: pointer; }
.switch input { position: absolute; opacity: 0; width: 100%; height: 100%; cursor: pointer; }
.switch i {
  display: block; width: 40px; height: 22px; border-radius: 999px;
  background: var(--bg-inset); border: 1px solid var(--border-2);
  transition: background .2s, border-color .2s;
}
.switch i::after {
  content: ""; position: absolute; top: 3px; left: 3px; width: 16px; height: 16px;
  border-radius: 50%; background: var(--fg-dim); transition: transform .2s, background .2s;
}
.switch input:checked + i { background: color-mix(in srgb, var(--ok) 35%, var(--bg-inset)); border-color: var(--ok); }
.switch input:checked + i::after { transform: translateX(18px); background: var(--ok); }
.switch input:focus-visible + i { outline: 2px solid var(--accent); outline-offset: 2px; }

/* rule form */
.rule-form { display: flex; flex-direction: column; gap: .9rem; }
.rf-row { display: flex; gap: .8rem; flex-wrap: wrap; align-items: flex-end; }
.rf-field { display: flex; flex-direction: column; gap: .3rem; flex: 1 1 130px; min-width: 0; }
.rf-field.rf-check { flex: 0 0 auto; align-items: flex-start; }
.rf-field.rf-check input { width: 18px; height: 18px; accent-color: var(--ok); margin: .5rem 0; }
.rf-label { font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .06em; color: var(--fg-dim); font-weight: 600; }
.rf-label .faint { text-transform: none; letter-spacing: 0; font-weight: 400; }
.rule-form input[type="text"], .rule-form input[type="number"],
.rule-form select, .rule-form textarea {
  background: var(--bg-tile); color: var(--fg); border: 1px solid var(--border);
  border-radius: 8px; padding: .5rem .7rem; font-size: var(--fs-sm); width: 100%;
}
.rule-form textarea { resize: vertical; min-height: 74px; line-height: 1.5; }
.rule-form input:focus, .rule-form select:focus, .rule-form textarea:focus {
  outline: none; border-color: var(--accent);
}
.rf-picker { align-items: flex-end; }
.rf-hint {
  font-size: var(--fs-xs); padding: .3rem .6rem; border-radius: 6px;
  border: 1px solid var(--border); background: var(--bg-tile); color: var(--fg-dim);
}
.rf-hint.ok   { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, var(--border)); background: var(--ok-soft); }
.rf-hint.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, var(--border)); background: var(--warn-soft); }
.rf-hint.bad  { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 40%, var(--border)); background: var(--bad-soft); }
.rf-error {
  font-size: var(--fs-sm); padding: .55rem .8rem; border-radius: 8px;
  color: var(--bad); background: var(--bad-soft);
  border: 1px solid color-mix(in srgb, var(--bad) 45%, var(--border));
  overflow-wrap: anywhere;
}
.btn-primary {
  background: var(--accent-soft); border-color: var(--accent); color: var(--accent); font-weight: 650;
}
.btn-primary:hover { background: color-mix(in srgb, var(--accent) 28%, transparent); color: var(--accent); }
.btn-primary:disabled { opacity: .6; cursor: default; }

/* ==========================================================================
   GATEWAY SHUTDOWN — danger button, danger-zone panel, confirm modal, and
   recent-command history. Powers the /device page + the boat Devices view.
   ========================================================================== */
.btn-danger {
  background: var(--bad-soft); border-color: color-mix(in srgb, var(--bad) 55%, var(--border));
  color: var(--bad); font-weight: 650;
}
.btn-danger:hover { background: color-mix(in srgb, var(--bad) 26%, transparent); border-color: var(--bad); color: var(--bad); }
.btn-danger:disabled { opacity: .55; cursor: default; }
.btn-danger:focus-visible { outline: 2px solid var(--bad); outline-offset: 2px; }

.danger-zone {
  margin: 1.4rem 0;
  border-color: color-mix(in srgb, var(--bad) 32%, var(--border));
}
.danger-zone .dz-head { border-bottom-color: color-mix(in srgb, var(--bad) 24%, var(--border)); }
.dz-ico { width: 18px; height: 18px; color: var(--bad); flex: none; }
.dz-note {
  font-size: var(--fs-sm); color: var(--fg-dim); line-height: 1.55; margin: 0 0 1rem;
  max-width: 68ch;
}
.dz-note b { color: var(--fg); font-weight: 650; }

/* --- recent command history ---------------------------------------------- */
.cmd-history-head {
  font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .07em;
  color: var(--fg-dim); font-weight: 600; margin-bottom: .5rem;
}
.cmd-list { display: flex; flex-direction: column; gap: .4rem; }
.cmd-row {
  display: flex; align-items: center; gap: .6rem; flex-wrap: wrap;
  background: var(--bg-tile); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: .45rem .65rem;
}
.cmd-row .cmd-kind { font-family: var(--mono); font-size: var(--fs-sm); font-weight: 600; }
.cmd-row .cmd-id { font-family: var(--mono); font-size: var(--fs-xs); color: var(--fg-faint); }
.cmd-row .cmd-time { font-size: var(--fs-xs); color: var(--fg-dim); margin-left: auto; }
.cmd-status {
  display: inline-flex; align-items: center; gap: .3rem;
  font-size: var(--fs-xs); font-weight: 650; text-transform: uppercase; letter-spacing: .04em;
  padding: .12rem .5rem; border-radius: 999px; border: 1px solid transparent;
}
.cmd-status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.cmd-status.pending   { color: var(--warn); background: var(--warn-soft); border-color: color-mix(in srgb, var(--warn) 35%, var(--border)); }
.cmd-status.delivered { color: var(--accent); background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 35%, var(--border)); }
.cmd-status.done      { color: var(--ok); background: var(--ok-soft); border-color: color-mix(in srgb, var(--ok) 35%, var(--border)); }
.cmd-empty { font-size: var(--fs-sm); margin: 0; }

/* --- confirm modal (native <dialog>) ------------------------------------- */
dialog.modal {
  width: min(92vw, 500px); padding: 0; color: var(--fg);
  background: var(--bg-card); border: 1px solid var(--border-2);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
}
dialog.modal::backdrop { background: rgba(4, 8, 13, .62); backdrop-filter: blur(3px); }
dialog.modal[open] { animation: modal-in .16s ease-out; }
@keyframes modal-in { from { opacity: 0; transform: translateY(8px) scale(.98); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { dialog.modal[open] { animation: none; } }

.modal-head {
  display: flex; align-items: center; gap: .6rem;
  padding: 1rem 1.2rem; border-bottom: 1px solid var(--border);
}
.modal-head svg { width: 20px; height: 20px; color: var(--bad); flex: none; }
.modal-head h2 { margin: 0; font-size: var(--fs-lg); }
.modal-close {
  margin-left: auto; background: none; border: none; color: var(--fg-dim);
  cursor: pointer; font-size: 1.4rem; line-height: 1; padding: .1rem .3rem; border-radius: 6px;
}
.modal-close:hover { color: var(--fg); background: var(--bg-tile); }
.modal-body { padding: 1.1rem 1.2rem; }
.modal-body p { margin: 0 0 .8rem; font-size: var(--fs-sm); line-height: 1.55; color: var(--fg); }
.modal-warn {
  display: flex; gap: .55rem; align-items: flex-start;
  font-size: var(--fs-sm); line-height: 1.5;
  padding: .6rem .75rem; border-radius: var(--radius-sm); margin: 0 0 1rem;
  color: var(--bad); background: var(--bad-soft);
  border: 1px solid color-mix(in srgb, var(--bad) 40%, var(--border));
}
.modal-warn svg { width: 17px; height: 17px; flex: none; margin-top: 1px; }
.modal-confirm-label { font-size: var(--fs-sm); color: var(--fg-dim); display: block; margin-bottom: .4rem; }
.modal-confirm-label b { color: var(--fg); font-family: var(--mono); }
.modal input.confirm-input {
  width: 100%; background: var(--bg-inset); color: var(--fg);
  border: 1px solid var(--border-2); border-radius: var(--radius-sm);
  padding: .6rem .75rem; font-size: var(--fs-base); font-family: var(--mono);
}
.modal input.confirm-input:focus { outline: none; border-color: var(--bad); }
.modal input.confirm-input.match { border-color: var(--ok); }
.modal-foot {
  display: flex; gap: .6rem; justify-content: flex-end; flex-wrap: wrap;
  padding: .9rem 1.2rem 1.1rem;
}
.modal-foot .btn { padding: .55rem 1rem; }
.modal-result {
  font-size: var(--fs-sm); line-height: 1.55; padding: .7rem .85rem;
  border-radius: var(--radius-sm); margin: 0;
}
.modal-result.ok   { color: var(--fg); background: var(--ok-soft);  border: 1px solid color-mix(in srgb, var(--ok) 38%, var(--border)); }
.modal-result.err  { color: var(--bad); background: var(--bad-soft); border: 1px solid color-mix(in srgb, var(--bad) 42%, var(--border)); }
.modal-result .r-title { font-weight: 650; display: block; margin-bottom: .25rem; color: var(--fg); }
.modal-result .r-step { display: flex; align-items: center; gap: .45rem; margin-top: .45rem; font-size: var(--fs-sm); color: var(--fg-dim); }
.modal-result .r-step .r-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--fg-faint); flex: none; }
.modal-result .r-step.on { color: var(--fg); }
.modal-result .r-step.on .r-dot { background: var(--ok); }
.modal-result .r-step.pending .r-dot { background: var(--warn); animation: pulse-dot 1.4s ease-out infinite; }
@keyframes pulse-dot { 0% { box-shadow: 0 0 0 0 var(--warn-soft); } 70% { box-shadow: 0 0 0 6px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }
@media (prefers-reduced-motion: reduce) { .modal-result .r-step.pending .r-dot { animation: none; } }

/* top-stripe gateway shutdown button */
.gw-power{display:inline-flex;align-items:center;justify-content:center;margin-left:auto;
  width:28px;height:28px;border-radius:6px;border:1px solid var(--danger,#e5484d);
  background:transparent;color:var(--danger,#e5484d);cursor:pointer;flex:0 0 auto;transition:background .12s,color .12s}
.gw-power svg{width:16px;height:16px}
.gw-power:hover{background:var(--danger,#e5484d);color:#fff}
.gw-strip.gw-none .gw-power{opacity:.35;pointer-events:none}