/* Ambar viewer - no external fonts or assets. */
:root {
  --bg: #eef1f4;
  --panel: #ffffff;
  --panel-2: #f5f7f9;
  --border: #dce2e8;
  --text: #17202b;
  --muted: #5b6878;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-text: #ffffff;
  --ok: #16a34a;
  --ok-bg: #dcfce7;
  --warn: #b45309;
  --warn-bg: #fef3c7;
  --err: #dc2626;
  --err-bg: #fee2e2;
  --scene-bg: #dde3ea;
  --label-bg: rgba(17, 24, 33, 0.78);
  --label-text: #ffffff;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 2px 8px rgba(16, 24, 40, 0.08);
  --radius: 8px;
  --mono: ui-monospace, "Cascadia Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1319;
    --panel: #151b23;
    --panel-2: #10161d;
    --border: #273241;
    --text: #e3e9f0;
    --muted: #93a1b3;
    --accent: #3b82f6;
    --accent-hover: #60a5fa;
    --ok: #4ade80;
    --ok-bg: #12301f;
    --warn: #fbbf24;
    --warn-bg: #33270b;
    --err: #f87171;
    --err-bg: #3a1414;
    --scene-bg: #1b222c;
    --label-bg: rgba(8, 12, 17, 0.8);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 4px 12px rgba(0, 0, 0, 0.35);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body { height: 100%; margin: 0; }
body {
  font: 13px/1.4 var(--sans);
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

.app {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  height: 100vh;
  height: 100dvh;
}

/* ---------------------------------------------------------------- top bar */
.topbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 16px;
  min-height: 52px;
  padding: 8px 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  z-index: 30;
}
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.logo {
  width: 22px; height: 22px; border-radius: 6px; flex: none;
  background: linear-gradient(135deg, #f59e0b 0%, #f97316 55%, #2563eb 56%, #1d4ed8 100%);
}
.brand-name { font-weight: 700; font-size: 15px; letter-spacing: 0.2px; }
.site-name {
  color: var(--muted); font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  max-width: 28ch; padding-left: 10px; border-left: 1px solid var(--border);
}
.transport { display: flex; align-items: center; gap: 10px; }
.tools { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.speed { display: flex; align-items: center; gap: 6px; color: var(--muted); }
.clock {
  font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: 14px;
  padding: 4px 8px; border-radius: 6px; background: var(--panel-2); border: 1px solid var(--border);
}

/* ---------------------------------------------------------------- controls */
.btn {
  appearance: none; font: inherit; font-weight: 600; color: var(--text);
  background: var(--panel); border: 1px solid var(--border); border-radius: 6px;
  padding: 5px 12px; cursor: pointer; line-height: 1.3; white-space: nowrap;
}
.btn:hover { border-color: var(--muted); }
.btn:focus-visible, .input:focus-visible, select:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 1px;
}
.btn:disabled { opacity: 0.5; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); min-width: 84px; }
.btn.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn.primary[aria-pressed="true"] { background: var(--ok); border-color: var(--ok); }
.btn.ghost { background: transparent; }
.btn.ghost[aria-pressed="true"] { background: var(--panel-2); border-color: var(--muted); }
.btn.danger { color: var(--err); }
.btn.danger:hover { border-color: var(--err); }
.btn.small { padding: 2px 7px; font-size: 11px; font-weight: 600; }
.btn.icon { padding: 0 8px; font-size: 18px; line-height: 1.2; border: none; background: transparent; color: var(--muted); }
.panels-toggle { display: none; }

select, .input {
  font: inherit; color: var(--text); background: var(--panel);
  border: 1px solid var(--border); border-radius: 6px; padding: 5px 8px; min-width: 0;
}
.input[type="search"] { width: 100%; margin-bottom: 8px; }

.pill {
  display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600;
  padding: 3px 10px; border-radius: 999px; white-space: nowrap;
}
.pill::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.pill-ok { color: var(--ok); background: var(--ok-bg); }
.pill-warn { color: var(--warn); background: var(--warn-bg); }
.pill-err { color: var(--err); background: var(--err-bg); }

.badge {
  display: inline-block; font-size: 10px; font-weight: 700; letter-spacing: 0.4px;
  padding: 1px 5px; border-radius: 4px; vertical-align: middle;
}
.badge-plc { color: var(--warn); background: var(--warn-bg); font-size: 11px; padding: 3px 7px; }
.badge-forced { color: var(--warn); background: var(--warn-bg); }
.badge-fault { color: var(--err); background: var(--err-bg); }
.badge-in { color: var(--muted); background: var(--panel-2); border: 1px solid var(--border); }
.badge-out { color: var(--accent); background: var(--panel-2); border: 1px solid var(--border); }

/* ---------------------------------------------------------------- layout */
.main {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  min-height: 0;
}
.viewport { position: relative; min-width: 0; min-height: 0; overflow: hidden; background: var(--scene-bg); }
.viewport canvas { display: block; width: 100%; height: 100%; touch-action: none; outline: none; }

.side {
  min-height: 0; overflow-y: auto; overscroll-behavior: contain;
  background: var(--panel-2); border-left: 1px solid var(--border);
  padding: 10px; display: flex; flex-direction: column; gap: 10px;
}

.panel { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); flex: none; }
.panel > summary {
  cursor: pointer; padding: 9px 12px; font-weight: 650; list-style: none; user-select: none;
  display: flex; align-items: center; gap: 8px;
}
.panel > summary::-webkit-details-marker { display: none; }
.panel > summary::before {
  content: ""; width: 0; height: 0; flex: none;
  border-left: 5px solid var(--muted); border-top: 4px solid transparent; border-bottom: 4px solid transparent;
  transition: transform 0.15s;
}
.panel[open] > summary::before { transform: rotate(90deg); }
.summary-note { margin-left: auto; color: var(--muted); font-weight: 500; font-size: 12px; }
.panel-body { padding: 0 12px 12px; }

/* ---------------------------------------------------------------- metrics */
.kpis { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
.kpi {
  display: flex; flex-direction: column; padding: 7px 9px; border-radius: 6px;
  background: var(--panel-2); border: 1px solid var(--border); min-width: 0;
}
.kpi-label { color: var(--muted); font-size: 11px; }
.kpi-value { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: 16px; font-weight: 600; }
.kpi-value.bad { color: var(--err); }

.grid-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.grid-table th {
  text-align: left; font-weight: 600; color: var(--muted); padding: 4px 6px;
  border-bottom: 1px solid var(--border); background: var(--panel); position: sticky; top: 0; z-index: 1;
}
.grid-table td { padding: 4px 6px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.grid-table tr:last-child td { border-bottom: none; }
.grid-table .num { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; }
.table-scroll { max-height: 300px; overflow: auto; border: 1px solid var(--border); border-radius: 6px; }

.tags-table td:first-child { font-family: var(--mono); word-break: break-all; }
.tag-value { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.bool { display: inline-block; min-width: 18px; text-align: center; border-radius: 4px; padding: 0 4px; font-weight: 700; }
.bool.on { color: #fff; background: var(--ok); }
.bool.off { color: var(--muted); background: var(--panel-2); border: 1px solid var(--border); }
.tag-actions { display: flex; gap: 4px; flex-wrap: nowrap; align-items: center; }
.tags-table td:last-child { width: 1%; white-space: nowrap; }
.tag-actions .input { width: 64px; padding: 2px 4px; font-size: 11px; }
.tag-flags { display: inline-flex; gap: 3px; margin-left: 4px; }

.asrs-list { display: flex; flex-direction: column; gap: 8px; margin-top: 10px; }
.asrs-item { padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; background: var(--panel-2); }
.asrs-row { display: flex; justify-content: space-between; gap: 8px; }
.asrs-row .num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.meter { height: 6px; border-radius: 3px; background: var(--border); overflow: hidden; margin: 6px 0 4px; }
.meter > span { display: block; height: 100%; width: 0; background: var(--accent); transition: width 0.3s; }
.muted { color: var(--muted); }

.form-row { display: flex; gap: 6px; margin-bottom: 8px; }
.form-row > select { flex: 1 1 0; }
.fault-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.fault-list li {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 4px 8px; border-radius: 6px; background: var(--panel-2); border: 1px solid var(--border);
}
.fault-list li.empty { color: var(--muted); justify-content: flex-start; }
.fault-list .what { font-family: var(--mono); font-size: 12px; }

.events {
  list-style: none; margin: 0; padding: 0; max-height: 280px; overflow-y: auto;
  font-family: var(--mono); font-size: 11.5px; border: 1px solid var(--border); border-radius: 6px;
}
.events li { display: grid; grid-template-columns: 64px 92px minmax(0, 1fr); gap: 6px; padding: 3px 8px; border-bottom: 1px solid var(--border); }
.events li:last-child { border-bottom: none; }
.events .t { color: var(--muted); text-align: right; font-variant-numeric: tabular-nums; }
.events .k { font-weight: 700; overflow: hidden; text-overflow: ellipsis; }
.events .d { color: var(--muted); overflow-wrap: anywhere; }
.events .k-fault, .events .k-stall { color: var(--err); }
.events .k-tote_out { color: var(--ok); }
.events .k-tote_in { color: var(--accent); }
.events .k-diverter, .events .k-asrs_cycle { color: var(--warn); }
.events .empty { display: block; color: var(--muted); }

/* ---------------------------------------------------------------- viewport overlays */
.overlay {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  color: var(--muted); font-size: 14px; pointer-events: none; text-align: center; padding: 20px;
}
.overlay.error { color: var(--err); }

.labels { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.label {
  position: absolute; left: 0; top: 0; padding: 1px 6px; border-radius: 4px;
  font-size: 11px; font-weight: 600; white-space: nowrap; will-change: transform;
  background: var(--label-bg); color: var(--label-text);
}
.label.minor { font-size: 10px; font-weight: 500; opacity: 0.85; }
.label.state-stop { background: #6b7280; }
.label.state-fault { background: #dc2626; }
.label.state-on { background: #15803d; }

.legend {
  position: absolute; left: 12px; top: 12px; display: flex; flex-wrap: wrap; gap: 6px; max-width: 60%;
  pointer-events: none;
}
.legend-item {
  display: inline-flex; align-items: center; gap: 5px; font-size: 11px; font-weight: 600;
  padding: 2px 8px 2px 4px; border-radius: 999px; background: var(--panel); border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.swatch { width: 12px; height: 12px; border-radius: 3px; border: 1px solid rgba(0, 0, 0, 0.25); }

.selection {
  position: absolute; left: 12px; bottom: 12px; width: 300px; max-width: calc(100% - 24px);
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 10px 12px; z-index: 5;
}
.selection-head { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.selection-kind {
  text-transform: uppercase; font-size: 10px; font-weight: 700; letter-spacing: 0.6px;
  color: var(--accent); background: var(--panel-2); border: 1px solid var(--border); padding: 1px 6px; border-radius: 4px;
}
.selection-id { font-family: var(--mono); font-weight: 700; font-size: 14px; overflow-wrap: anywhere; }
.selection-head .btn.icon { margin-left: auto; }
.selection-props { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 2px 12px; margin: 0 0 8px; font-size: 12px; }
.selection-props dt { color: var(--muted); }
.selection-props dd { margin: 0; font-family: var(--mono); overflow-wrap: anywhere; }
.selection-actions { display: flex; flex-wrap: wrap; gap: 6px; }
.selection-actions:empty { display: none; }

.toast {
  position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); z-index: 50;
  max-width: min(560px, calc(100vw - 32px)); padding: 10px 14px; border-radius: var(--radius);
  background: var(--err-bg); color: var(--err); border: 1px solid var(--err); box-shadow: var(--shadow);
  font-weight: 600;
}
.toast.ok { background: var(--ok-bg); color: var(--ok); border-color: var(--ok); }

/* ---------------------------------------------------------------- narrow screens */
@media (max-width: 1100px) {
  .main { grid-template-columns: minmax(0, 1fr) 320px; }
  .site-name { max-width: 18ch; }
}

@media (max-width: 900px) {
  .main { grid-template-columns: minmax(0, 1fr); }
  .panels-toggle { display: inline-block; }
  .side {
    position: absolute; top: 0; right: 0; bottom: 0; width: min(380px, 92vw); z-index: 20;
    transform: translateX(105%); transition: transform 0.2s ease; box-shadow: var(--shadow);
    border-left: 1px solid var(--border);
  }
  .app.panels-open .side { transform: none; }
  .legend { max-width: calc(100% - 24px); }
}

@media (max-width: 600px) {
  .topbar { padding: 6px 10px; gap: 6px 10px; }
  .site-name { display: none; }
  .speed-label { display: none; }
  .tools { margin-left: 0; width: 100%; justify-content: flex-end; }
  #btn-top { display: none; }
  .selection { width: auto; right: 12px; }
  .label.minor { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .side, .meter > span, .panel > summary::before { transition: none; }
}