/* ============================================================
   Kiwrious Measure (HTML5) — main stylesheet
   Brand & layout faithful to measure-kiwrious-com
   ============================================================ */

:root {
  --kw-orange: #F85708;
  --kw-orange-hover: #FF671C;
  --kw-orange-active: #E54B00;
  --kw-bg-body: #314250;
  --kw-bg-home: #192A33;
  --kw-bg-side: #232f38;
  --kw-text: #D3D3D3;
  --kw-text-muted: #888;
  --kw-disabled: #6a6a6a;
  --kw-warning-bg: lightyellow;
  --kw-warning-text: #4a3a00;
  --font-main: 'Roboto', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--kw-bg-body);
  color: var(--kw-text);
  font-family: var(--font-main);
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--kw-orange); }

/* App container — matches Home.css "home" class
   ------------------------------------------------------------ */
.app {
  /* Translucent so the viewport-fixed .sensor-anim layer (rendered
     beneath) is partially visible inside the card region too — making
     the particle drift read as one continuous backdrop across the
     whole screen. */
  background-color: rgba(25, 42, 51, 0.55);
  height: 100vh;
  height: 100dvh;
  padding: 18px 22px 36px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Top bar
   ------------------------------------------------------------ */
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 0 0 auto;
}
.topbar__brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.topbar__logo {
  width: 38px;
  height: 38px;
  display: block;
  object-fit: contain;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
}
.topbar__title {
  font-size: 16px;
  font-weight: 500;
  color: white;
  line-height: 1.1;
}
.topbar__sub {
  font-size: 12px;
  color: var(--kw-text-muted);
  margin-top: 2px;
}
.topbar__spacer { flex: 1; }

/* Status + Connect (combined) ------------------------------- */
.status-control { position: relative; display: inline-flex; }
.status-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-weight: 500;
  height: 32px;
  padding: 0 14px;
  border-radius: 999px;
  transition: background 0.15s, color 0.15s;
}
.status-btn__dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.85;
  flex: 0 0 auto;
}
.status-btn__chevron {
  font-size: 11px;
  margin-left: 2px;
  opacity: 0.7;
  line-height: 1;
}
.status-btn--disconnected {
  background: var(--kw-orange);
  color: white;
  font-size: 14px;
}
.status-btn--disconnected:hover  { background: var(--kw-orange-hover); }
.status-btn--disconnected:active { background: var(--kw-orange-active); }
.status-btn--disconnected .status-btn__chevron { display: none; }
.status-btn--connected {
  background: rgba(0, 212, 114, 0.10);
  color: #00D472;
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 12px;
}
.status-btn--connected:hover  { background: rgba(0, 212, 114, 0.18); }

/* Record + sample-rate split button ------------------------- */
.record-group { position: relative; display: inline-flex; align-items: stretch; }
.record-group__main {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 10px 0 16px;
  border: none;
  background: var(--kw-orange);
  color: white;
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  border-radius: 999px 0 0 999px; /* pill on the outer (left) edge */
  margin-right: 1px; /* hairline gap between main and split */
  transition: background 0.15s;
}
.record-group__main:hover { background: var(--kw-orange-hover); }
.record-group__main:active { background: var(--kw-orange-active); }
.record-group__main:disabled {
  background: var(--kw-disabled);
  cursor: not-allowed;
}
.record-group__rate {
  font-size: 11px;
  font-weight: 400;
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  padding: 1px 6px;
  border-radius: 3px;
  background: rgba(0, 0, 0, 0.18);
  white-space: nowrap;
}
.record-group__split {
  width: 28px;
  height: 32px;
  padding: 0 4px 0 0;
  border: none;
  background: var(--kw-orange);
  color: white;
  cursor: pointer;
  font-size: 12px;
  border-radius: 0 999px 999px 0; /* pill on the outer (right) edge */
  transition: background 0.15s;
}
.record-group__split:hover  { background: var(--kw-orange-hover); }
.record-group__split:active { background: var(--kw-orange-active); }
.record-group__split:disabled {
  background: var(--kw-disabled);
  cursor: not-allowed;
}

/* Generic dropdown menu ------------------------------------- */
.menu {
  position: absolute;
  top: calc(100% + 6px);
  background: var(--kw-bg-side);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 4px;
  min-width: 180px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.4);
  z-index: 50;
}
.menu--right { right: 0; }
.menu[hidden] { display: none !important; }
.menu__item {
  display: block;
  width: 100%;
  padding: 8px 12px;
  border: none;
  background: transparent;
  color: white;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  border-radius: 4px;
}
.menu__item:hover { background: rgba(255, 255, 255, 0.06); }
.menu__item.is-selected { color: var(--kw-orange); font-weight: 500; }
.menu__item.is-selected::before { content: '✓'; margin-right: 8px; }
.menu__item:not(.is-selected)::before { content: ''; display: inline-block; width: 8px; margin-right: 8px; }

/* Pre-connection screen
   ------------------------------------------------------------ */
.welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px;
  flex: 1 1 auto;
  min-height: 0;
}
.welcome__image {
  max-width: 380px;
  width: 50%;
  max-height: 50%;
  object-fit: contain;
  margin-bottom: 20px;
}
.welcome__guide {
  font-size: 18px;
  color: white;
  line-height: 1.8;
  margin: 0 0 28px;
  white-space: pre-line;
}

/* Buttons
   ------------------------------------------------------------ */
.btn {
  background: var(--kw-orange);
  color: white;
  border: none;
  border-radius: 5px;
  font-family: var(--font-main);
  font-size: 16px;
  font-weight: 500;
  height: 36px;
  padding: 0 24px;
  cursor: pointer;
  transition: background 0.2s;
}
.btn:hover { background: var(--kw-orange-hover); }
.btn:active { background: var(--kw-orange-active); }
.btn:disabled,
.btn.is-disabled {
  background: var(--kw-disabled);
  cursor: not-allowed;
}
.btn--ghost {
  background: transparent;
  border: 1px solid white;
  color: white;
}
.btn--ghost:hover { background: rgba(255, 255, 255, 0.1); }
.btn--ghost:active { background: rgba(255, 255, 255, 0.2); }

.btn--block {
  width: 130px;
  height: 32px;
  font-size: 15px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.btn--sm {
  height: 26px;
  font-size: 12px;
  padding: 0 10px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Record/Stop glyph rendered inline in the topbar Record button */
.rec-ic {
  display: inline-block;
  width: 10px;
  height: 10px;
  background: white;
  flex: 0 0 auto;
}
.rec-ic--rec { border-radius: 50%; }
.rec-ic--stop { border-radius: 1.5px; }
.btn:disabled .rec-ic { background: rgba(255,255,255,0.6); }

/* Connected layout (two columns)
   ------------------------------------------------------------ */
.connected {
  display: grid;
  /* Use 1fr + fixed px on the side column so the collapse/expand
     transition interpolates smoothly. Mixing `fr` with `px` (as in the
     previous `1.6fr 1fr` → `1fr 44px`) is not animatable and produces a
     jump/impulse mid-transition. */
  grid-template-columns: 1fr 420px;
  gap: 20px;
  align-items: stretch;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  transition: grid-template-columns 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.connected.is-side-collapsed {
  grid-template-columns: 1fr 44px;
}
@media (max-width: 980px) {
  .connected { grid-template-columns: 1fr; grid-template-rows: 1.4fr 1fr; }
  .connected.is-side-collapsed { grid-template-columns: 1fr; grid-template-rows: 1fr 44px; }
}

.firmware-banner {
  background: var(--kw-warning-bg);
  color: var(--kw-warning-text);
  padding: 0 6px 0 14px;
  height: 32px;
  border-radius: 999px;
  font-size: 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  box-sizing: border-box;
  transition: padding 0.2s ease, gap 0.2s ease;
}
.firmware-banner__icon {
  font-size: 14px;
  line-height: 1;
}
.firmware-banner__text {
  flex: 1 1 auto;
  min-width: 0;
}
.firmware-banner__link {
  color: var(--kw-orange-active);
  font-weight: 500;
  white-space: nowrap;
  text-decoration: none;
}
.firmware-banner__link:hover { text-decoration: underline; }
.firmware-banner__close,
.firmware-banner__expand {
  background: transparent;
  border: none;
  color: var(--kw-warning-text);
  cursor: pointer;
  padding: 0;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.firmware-banner__close {
  width: 20px;
  height: 20px;
  font-size: 16px;
  line-height: 1;
  border-radius: 50%;
  flex: 0 0 auto;
}
.firmware-banner__close:hover { background: rgba(0, 0, 0, 0.08); }
.firmware-banner__expand {
  display: none;
  font-size: 12px;
  font-weight: 500;
  gap: 4px;
  padding: 0 4px 0 0;
}
.firmware-banner__expand-arrow { font-size: 16px; line-height: 1; }

/* Collapsed: same 32px pill, just shorter content. */
.firmware-banner.is-collapsed {
  padding: 0 6px 0 12px;
  gap: 6px;
  cursor: pointer;
}
.firmware-banner.is-collapsed:hover { background: #fff8c0; }
.firmware-banner.is-collapsed .firmware-banner__text,
.firmware-banner.is-collapsed .firmware-banner__link,
.firmware-banner.is-collapsed .firmware-banner__close { display: none; }
.firmware-banner.is-collapsed .firmware-banner__expand { display: inline-flex; }

/* Left pane: sensor value + chart
   ------------------------------------------------------------ */
.left-pane {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
}

.sensor-value-area {
  flex: 0 1 38%;
  min-height: 180px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.select {
  background: var(--kw-bg-side);
  color: white;
  border: 1px solid #2c3a44;
  border-radius: 5px;
  height: 35px;
  width: 200px;
  padding: 0 12px;
  text-align: center;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='white' d='M0 0l5 6 5-6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}
.select:disabled { color: var(--kw-text-muted); cursor: not-allowed; }
.select--compact {
  height: 32px;
  width: 180px;
  font-size: 13px;
  padding: 0 28px 0 10px;
  background-position: right 10px center;
}

.chart-wrap {
  position: relative;
  background: rgba(0, 0, 0, 0.15);
  border-radius: 10px;
  padding: 4px 6px;
  flex: 1 1 0;
  min-height: 0;
  overflow: hidden;
}
/* Per-mode visuals (chart-host fills, bars, gauges, etc.) live in
   styles/chart-modes.css. */

/* Defensive: hide any Apex y-axis line/border that ignores axisBorder.show.
   Some Apex builds render a thick coloured "axis" line even when the option
   is disabled — this strips it without touching tick text or title text. */
.chart-host .apexcharts-yaxis line,
.chart-host .apexcharts-yaxis-axis,
.chart-host .apexcharts-yaxis-axis line {
  stroke: transparent !important;
}

/* Sensor display style toggle (classic Vue pebbles vs. modern icons).
   Two-button pill matching the height of the chart toolbar. */
.view-toggle {
  display: inline-flex;
  align-items: center;
  height: 32px;
  box-sizing: border-box;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 999px;
  padding: 3px;
  gap: 2px;
  margin-right: 6px;
}
.view-toggle__btn {
  height: 26px;
  padding: 0 12px;
  border: none;
  background: transparent;
  color: var(--kw-text-muted);
  border-radius: 999px;
  cursor: pointer;
  font: 500 12px/1 var(--font-main);
  letter-spacing: 0.3px;
  transition: color 0.15s, background 0.15s;
}
.view-toggle__btn:hover { color: white; background: rgba(255, 255, 255, 0.06); }
.view-toggle__btn.is-active {
  color: white;
  background: var(--kw-orange);
}
.view-toggle__btn.is-active:hover { background: var(--kw-orange-hover); }

/* Chart type switcher — collapsed shows just a left-chevron toggle; opens
   horizontally to the left to reveal the available modes. */
.chart-toolbar {
  display: inline-flex;
  align-items: center;
  height: 32px;
  box-sizing: border-box;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 999px;
  padding: 3px;
}
.chart-toolbar__options {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  max-width: 0;
  overflow: hidden;
  transition: max-width 0.3s ease, margin-right 0.3s ease, opacity 0.2s ease;
  margin-right: 0;
  opacity: 0;
}
.chart-toolbar.is-expanded .chart-toolbar__options {
  max-width: 480px;
  margin-right: 4px;
  opacity: 1;
}
.chart-toolbar__toggle {
  height: 26px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--kw-text-muted);
  cursor: pointer;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex: 0 0 auto;
  transition: color 0.15s;
}
.chart-toolbar__toggle:hover { color: white; }
.chart-toolbar__chevron {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 26px;
  transition: transform 0.3s ease;
}
.chart-toolbar.is-expanded .chart-toolbar__chevron { transform: rotate(180deg); }
/* Active mode preview — matches the orange-circle look of an .is-active option */
.chart-toolbar__active-icon {
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--kw-orange);
  color: white;
  border-radius: 50%;
  flex: 0 0 auto;
  transition: background 0.15s;
}
.chart-toolbar__toggle:hover .chart-toolbar__active-icon { background: var(--kw-orange-hover); }
.chart-toolbar__active-icon svg { display: block; }
.chart-type-btn {
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--kw-text-muted);
  border-radius: 50%;
  cursor: pointer;
  padding: 0;
  transition: color 0.15s, background 0.15s;
}
.chart-type-btn:hover { color: white; background: rgba(255,255,255,0.08); }
.chart-type-btn.is-active { color: white; background: var(--kw-orange); }
.chart-type-btn.is-active:hover { background: var(--kw-orange-hover); }

/* Right pane: recordings + ranges, with always-visible vertical rail
   ------------------------------------------------------------ */
.side-panel {
  position: relative;
  background: var(--kw-bg-side);
  border-radius: 15px;
  display: flex;
  flex-direction: row;
  /* Anchor children to the right edge. In the expanded state body+rail
     fill the row exactly so this is a no-op, but during the collapse
     transition (when body snaps to zero width) this keeps the rail
     glued to the right edge of the shrinking column instead of jumping
     to the left. */
  justify-content: flex-end;
  min-height: 0;
  overflow: hidden;
}
.side-panel__body {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
  min-width: 0;
  padding: 16px 14px;
  gap: 10px;
}
.side-panel__pane {
  display: none;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
  gap: 10px;
}
.side-panel__pane.is-active { display: flex; }
.side-panel__pane-header {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  min-height: 26px;
}

/* Persistence note shown above the recordings list */
.recordings-note {
  margin: 0;
  padding: 10px 12px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--kw-text-muted);
  background: rgba(255, 255, 255, 0.04);
  border-left: 3px solid var(--kw-orange);
  border-radius: 6px;
  flex: 0 0 auto;
}
.recordings-note strong { color: white; font-weight: 500; }

/* Vertical rail with the tabs — visible in both states */
.side-panel__rail {
  flex: 0 0 44px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding: 8px 0;
  gap: 6px;
  border-left: 1px solid rgba(255, 255, 255, 0.06);
}
.rail-tab {
  background: transparent;
  border: none;
  color: var(--kw-text-muted);
  font: 500 12px/1 var(--font-main);
  cursor: pointer;
  padding: 12px 0;
  margin: 0 6px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.4px;
  transition: color 0.15s, background 0.15s;
  min-height: 90px;
}
.rail-tab:hover { color: white; background: rgba(255, 255, 255, 0.05); }
.rail-tab.is-active { color: white; background: rgba(255, 255, 255, 0.08); }
.rail-tab__label {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  white-space: nowrap;
}
.side-panel__list {
  overflow-y: auto;
  flex: 1 1 auto;
  min-height: 0;
  padding-right: 4px;
}

/* Ranges tab — sensor display-config reference */
.ranges-content {
  overflow-y: auto;
  flex: 1 1 auto;
  min-height: 0;
  padding-right: 4px;
}
.range-group { margin-bottom: 16px; }
.range-group:last-child { margin-bottom: 0; }
.range-group__title {
  margin: 0 0 6px;
  font-size: 11px;
  font-weight: 500;
  color: var(--kw-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}
.range-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 6px 0;
  font-size: 13px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}
.range-row__label { color: white; font-weight: 500; min-width: 0; }
.range-row__value {
  color: var(--kw-text-muted);
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 12px;
  white-space: nowrap;
}

/* Insights tab — sensor-aware reference bands with the active range
   highlighted from live readings. */
.insights-content {
  overflow-y: auto;
  flex: 1 1 auto;
  min-height: 0;
  padding-right: 4px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.insight-empty {
  color: var(--kw-text-muted);
  font-size: 13px;
  text-align: center;
  padding: 24px 12px;
  margin: 0;
}
.insight-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.insight-group__header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 4px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.insight-group__title {
  margin: 0;
  font-size: 12px;
  font-weight: 500;
  color: var(--kw-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.insight-group__value {
  font: 500 13px/1 'JetBrains Mono', ui-monospace, Menlo, monospace;
  color: white;
  font-variant-numeric: tabular-nums;
}
.insight-group__bands {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.insight-band {
  display: grid;
  grid-template-columns: 92px 1fr;
  column-gap: 12px;
  align-items: baseline;
  padding: 6px 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.02);
  border-left: 3px solid transparent;
  transition: background 0.2s, border-color 0.2s;
}
.insight-band__range {
  font: 500 12px/1.3 'JetBrains Mono', ui-monospace, Menlo, monospace;
  color: var(--kw-text-muted);
  font-variant-numeric: tabular-nums;
}
.insight-band__label {
  font-size: 13px;
  font-weight: 500;
  color: white;
  margin-bottom: 2px;
}
.insight-band__desc {
  grid-column: 2;
  font-size: 11px;
  color: var(--kw-text-muted);
  line-height: 1.4;
}
.insight-band.is-active {
  background: rgba(248, 87, 8, 0.10);
  border-left-color: var(--kw-orange);
}
.insight-band.is-active .insight-band__range { color: var(--kw-orange); }
.insight-band.is-active .insight-band__label { color: var(--kw-orange); }

/* Links tab — useful Kiwrious destinations */
.links-content {
  overflow-y: auto;
  flex: 1 1 auto;
  min-height: 0;
  padding-right: 4px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.link-card {
  display: block;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 10px;
  color: inherit;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, transform 0.15s;
}
.link-card:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.12);
  transform: translateY(-1px);
}
.link-card__title {
  display: flex;
  align-items: center;
  gap: 8px;
  color: white;
  font-weight: 500;
  font-size: 14px;
  margin-bottom: 4px;
}
.link-card__arrow {
  color: var(--kw-orange);
  font-size: 14px;
  margin-left: auto;
}
.link-card__url {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 11px;
  color: var(--kw-orange);
}
.link-card__desc {
  font-size: 12px;
  color: var(--kw-text-muted);
  margin-top: 4px;
  line-height: 1.4;
}
.side-panel__empty {
  color: var(--kw-text-muted);
  text-align: center;
  padding: 40px 16px;
  font-size: 13px;
}

/* Collapsed state — body hidden, rail remains visible.
   `display: none` would prevent the column-expansion transition from
   reading as a smooth slide (and forbid fading the content in/out), so
   we hide via opacity + visibility instead. On expand, the body waits
   for the column to finish growing (delay matches .connected's
   grid-template-columns transition: 0.35s) and then fades in. On
   collapse, content fades out immediately so the column shrinks into
   empty space. */
.side-panel__body {
  opacity: 1;
  visibility: visible;
  transition: opacity 0.15s ease 0.35s, visibility 0s linear 0.35s;
}
.side-panel.is-collapsed .side-panel__body {
  opacity: 0;
  visibility: hidden;
  /* Collapse to zero so the body's padding doesn't reserve ~28px and
     push the 44px rail partly off-screen. min-width:0 alone isn't
     enough because padding (content-box) adds on top. */
  flex: 0 0 0;
  padding: 0;
  transition: opacity 0.15s ease 0s, visibility 0s linear 0.15s;
}
.side-panel.is-collapsed .side-panel__rail { border-left: none; }

/* Custom scrollbar (webkit) */
.side-panel__list::-webkit-scrollbar { width: 8px; }
.side-panel__list::-webkit-scrollbar-track {
  background: rgba(116, 116, 116, 0.2);
  border-radius: 10px;
}
.side-panel__list::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.4);
  border-radius: 5px;
}

/* Footer
   ------------------------------------------------------------ */
.app__footer {
  position: absolute;
  right: 22px;
  bottom: 8px;
  font-size: 11px;
  color: white;
  opacity: 0.4;
  pointer-events: none;
}

/* Animations
   ------------------------------------------------------------ */
@keyframes fadePulse {
  0%   { opacity: 1; }
  50%  { opacity: 0.5; }
  100% { opacity: 1; }
}
.is-recording {
  animation: fadePulse 1.5s ease-in-out infinite;
}

/* Sensor-aware particle layer
   ------------------------------------------------------------
   Viewport-spanning, click-through. Two stacked layers with
   slightly different speeds give a soft parallax. Each sensor
   type swaps the background-image via the [data-type] selector
   below. Intensity (0–3) gates layer visibility so quiet sensors
   stay quiet and humidity-heavy moments feel weightier. */
.sensor-anim {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}
/* Each particle is its own SVG element with inline CSS vars set by JS:
     --d   = animation duration   (longer = slower)
     --dl  = negative delay so the population is out of phase on load
     --dx  --dy = drift offset for the alternate-direction tween
     --rot = static rotation, applied separately from the translate so
             the keyframe can animate translate without colliding.
   `alternate` direction means each particle gently floats back and
   forth instead of looping with a hard reset — a more organic feel. */
.sensor-anim__p {
  position: absolute;
  display: block;
  fill: white;
  rotate: var(--rot, 0deg);
  animation: particle-float var(--d, 24s) ease-in-out var(--dl, 0s) infinite alternate;
  will-change: translate;
}
@keyframes particle-float {
  from { translate: 0 0; }
  to   { translate: var(--dx, 20px) var(--dy, -30px); }
}

/* Foreground content above animation */
.connected, .welcome { position: relative; z-index: 1; }