/* css/bess.css
   The storage-siting demonstration. Shares the page tokens defined in
   custom.css and the visual grammar of the 14-bus diagram: voltage in the bus
   fill, loading in the branch weight, red only for a genuine limit breach. */

.bx {
  margin-top: 28px;
}

/* ---------- live status line ---------- */

.bx-status {
  border: 1px solid var(--ring);
  background: var(--card);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}

.bx-status__line {
  margin: 0;
  font-size: 1rem;
  color: var(--ink);
  line-height: 1.5;
}

.bx-status__line strong { font-weight: 650; }

.bx-status__foot {
  margin: 6px 0 0;
  font-size: .85rem;
  color: var(--ink-muted);
}

.bx-status__warn {
  margin: 8px 0 0;
  font-size: .85rem;
  color: #8a4b2a;
  background: #fdf3ec;
  border-radius: var(--radius-sm);
  padding: 8px 10px;
}

/* ---------- one-line diagram ---------- */

.bx-diagramwrap {
  background: var(--card);
  border: 1px solid var(--ring);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 10px;
  overflow-x: auto;
}

.bx-diagram {
  display: block;
  width: 100%;
  min-width: 720px;
  height: auto;
}

.bx-bus { cursor: pointer; }
.bx-bus--source { cursor: default; }

.bx-bus:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 50%;
}

.bx-bus:not(.bx-bus--source):hover circle {
  stroke: var(--accent);
  stroke-width: 3;
}

.bx-buslabel {
  font: 600 11px/1 system-ui, -apple-system, "Segoe UI", sans-serif;
  pointer-events: none;
}

.bx-batterylabel {
  font: 650 11px/1 system-ui, -apple-system, "Segoe UI", sans-serif;
  fill: #fff;
  pointer-events: none;
}

.bx-battery { pointer-events: none; }

/* ---------- controls ---------- */

.bx-layout { margin-top: 18px; }

/* Three explicit columns rather than auto-fit. The dispatch-rule row spans the
   whole grid, and a spanning item stops auto-fit from collapsing the tracks it
   covers - so on a wide screen auto-fit laid out four narrow columns for three
   controls, truncating the licence-area names and wrapping the readouts. */
.bx-controls {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  background: var(--card);
  border: 1px solid var(--ring);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 18px;
}

.bx-control {
  border: 0;
  margin: 0;
  padding: 0;
  min-width: 0;
}

.bx-control__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 8px;
}

.bx-control__label {
  font-size: .82rem;
  font-weight: 650;
  letter-spacing: .02em;
  text-transform: uppercase;
  color: var(--ink-muted);
  padding: 0;
}

.bx-control__value {
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
  font-weight: 650;
  color: var(--ink);
}

.bx-slider { width: 100%; accent-color: var(--accent); }

.bx-select {
  width: 100%;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--ring);
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: .92rem;
}

@media (min-width: 760px) {
  .bx-controls { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.bx-modes {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 4px 20px;
  border-top: 1px solid var(--ring);
  padding-top: 16px;
}

.bx-modes legend {
  grid-column: 1 / -1;
  margin-bottom: 4px;
}

.bx-mode {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 9px;
  align-items: start;
  padding: 7px 0;
  cursor: pointer;
}

.bx-mode input { margin-top: 3px; accent-color: var(--accent); }

.bx-mode__label {
  font-weight: 600;
  color: var(--ink);
}

.bx-mode__blurb {
  grid-column: 2;
  font-size: .82rem;
  color: var(--ink-muted);
  line-height: 1.45;
}

/* ---------- 24-hour strip ---------- */

.bx-stripwrap {
  background: var(--card);
  border: 1px solid var(--ring);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 10px 14px 12px;
}

/* Only the drawing scrolls; the caption below it stays put. */
.bx-stripcanvas {
  overflow-x: auto;
}

.bx-stripwrap .bx-panel__foot {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--ring);
}

.bx-strip {
  display: block;
  width: 100%;
  min-width: 620px;
  height: auto;
}

/* ---------- verdict ---------- */

.bx-verdict {
  margin-top: 26px;
  border: 1px solid var(--ring);
  border-left: 5px solid #8f9bb0;
  background: var(--card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 20px 22px;
}

.bx-verdict--yes      { border-left-color: #2e9e6b; }
.bx-verdict--partial  { border-left-color: #c98a2e; }
.bx-verdict--no       { border-left-color: #d03b3b; }
.bx-verdict--marginal { border-left-color: #8f9bb0; }

.bx-verdict__binding {
  margin: 0 0 4px;
  font-size: .78rem;
  font-weight: 650;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.bx-verdict__headline {
  margin: 0 0 8px;
  font-size: 1.35rem;
  line-height: 1.25;
  color: var(--ink);
}

.bx-verdict__reason {
  margin: 0;
  line-height: 1.6;
  color: var(--ink);
}

/* ---------- stat grids ---------- */

.bx-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.bx-stat {
  background: #f7f9fc;
  border: 1px solid var(--ring);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}

.bx-stat__label {
  margin: 0 0 6px;
  font-size: .78rem;
  font-weight: 600;
  color: var(--ink-muted);
  line-height: 1.35;
}

.bx-stat__value {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  line-height: 1.15;
}

.bx-stat__note {
  margin: 6px 0 0;
  font-size: .78rem;
  color: var(--ink-muted);
  line-height: 1.4;
}

/* ---------- panels ---------- */

.bx-panel {
  margin-top: 26px;
  border: 1px solid var(--ring);
  background: var(--card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 20px 22px;
}

.bx-panel__title {
  margin: 26px 0 10px;
  font-size: 1.15rem;
  color: var(--ink);
}

.bx-panel .bx-panel__title { margin-top: 0; }

.bx-panel__lead {
  margin: 0;
  line-height: 1.6;
  color: var(--ink-muted);
}

.bx-panel__foot {
  margin: 14px 0 0;
  font-size: .82rem;
  color: var(--ink-muted);
  line-height: 1.5;
}

.bx-carbon__headline {
  margin: 16px 0 0;
  font-size: 1.2rem;
  font-weight: 650;
  line-height: 1.35;
}

.bx-carbon__headline--down { color: #1f7a52; }
.bx-carbon__headline--up   { color: #b03636; }

@media (max-width: 640px) {
  .bx-verdict, .bx-panel { padding: 16px; }
  .bx-verdict__headline { font-size: 1.2rem; }
  .bx-stat__value { font-size: 1.2rem; }
}

/* Article copy for this project - the lead paragraphs and the notes block - is
   shared with the 14-bus project and lives in css/notes.css. */