/* ---------------------------------------------------------------------------
   Design tokens.

   Light is a *selected* mode, not a flipped one: the sequential ramp steps below
   are the same documented blue family, re-ordered so the light end recedes
   toward the page and the dark end carries the high values, and the ink and
   surface tokens are the light-surface pair rather than inverted dark ones.
   Text always wears ink tokens -- never a series colour.
   --------------------------------------------------------------------------- */
:root {
  color-scheme: light;

  --surface-1:      #fcfcfb;   /* chart / panel surface */
  --page:           #f9f9f7;   /* page plane */
  --text-primary:   #0b0b0b;
  --text-secondary: #52514e;
  --text-muted:     #898781;
  --gridline:       #e1e0d9;
  --baseline:       #c3c2b7;
  --border:         rgba(11, 11, 11, 0.10);

  /* Slot 1, light step. Single-series bars and the sparkline use this. */
  --series-1:       #2a78d6;

  /* Sequential blue, low -> high on a light surface. */
  --seq-1: #cde2fb;
  --seq-2: #9ec5f4;
  --seq-3: #6da7ec;
  --seq-4: #3987e5;
  --seq-5: #256abf;
  --seq-6: #184f95;

  /* "Nothing was reported here" recedes toward the surface. It is a distinct
     state from "the quietest fifth of the city", so it gets its own colour. */
  --seq-zero: #e1e0d9;

  --radius: 10px;
  --pad: 16px;

  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

/* Any rule that sets `display` outranks the UA's `[hidden] { display: none }`,
   so state the intent once and let it win. */
[hidden] { display: none !important; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--page);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.5;
}

body {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  height: 100vh;
  overflow: hidden;
}

/* --------------------------------------------------------------- top bar --- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 20px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-1);
}

.brand h1 {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.subtitle {
  margin: 3px 0 0;
  font-size: 12.5px;
  color: var(--text-secondary);
}

.linkish {
  background: none;
  border: 0;
  padding: 0 0 0 4px;
  color: var(--text-secondary);
  font: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
}
.linkish:hover { color: var(--text-primary); }

/* Design doc S12(b): "data as of" is a first-class element, not a footnote. */
.freshness {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 13px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--page);
  white-space: nowrap;
}
.freshness-label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); }
.freshness-value { font-size: 14px; font-weight: 600; color: var(--text-primary); }
.freshness-meta  { font-size: 12px; color: var(--text-secondary); }

/* --------------------------------------------------------------- filters --- */

.filters {
  display: flex;
  align-items: flex-end;
  gap: 14px;
  padding: 11px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-1);
  flex-wrap: wrap;
}

.filters-spacer { flex: 1 1 auto; }

.field { display: flex; flex-direction: column; gap: 5px; }

.field-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

select, .btn {
  appearance: none;
  min-height: 32px;
  padding: 6px 11px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--page);
  color: var(--text-primary);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
select:hover, .btn:hover { border-color: rgba(11, 11, 11, 0.28); }
select:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--series-1);
  outline-offset: 1px;
}
.btn[aria-pressed="true"] { border-color: var(--series-1); color: var(--series-1); }

/* Time-of-day control.
   Marked as a development affordance rather than dressed to match the filters
   beside it: in production the hour comes from the user's clock, and this input
   goes away. Looking provisional is the honest state. */
.field-dev .field-label { color: var(--series-1); }

.dev-tag {
  display: inline-block;
  margin-left: 4px;
  padding: 0 4px;
  border: 1px dashed currentColor;
  border-radius: 4px;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.08em;
  vertical-align: 1px;
}

.hour-input { display: flex; align-items: center; gap: 8px; }

.hour-input input[type="time"] {
  min-height: 32px;
  padding: 5px 9px;
  border: 1px dashed rgba(11, 11, 11, 0.28);
  border-radius: 8px;
  background: var(--page);
  color: var(--text-primary);
  font: inherit;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}
.hour-input input[type="time"]:focus-visible {
  outline: 2px solid var(--series-1);
  outline-offset: 1px;
}
.field-dev[aria-disabled="true"] { opacity: 0.55; }
.field-dev[aria-disabled="true"] input { pointer-events: none; }

/* Echoes the block the entered time actually resolves to, so there is never a
   question of whether 20:45 means 20:00-21:00. */
.field-note {
  font-size: 11px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

/* Track tabs. One control, two segments, so the pair reads as a single choice
   rather than as two independent buttons. */
.tabs {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--page);
}

.tab {
  appearance: none;
  min-height: 32px;
  padding: 6px 13px;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
.tab + .tab { border-left: 1px solid var(--border); }
.tab:hover { color: var(--text-primary); }
.tab[aria-selected="true"] {
  background: rgba(11, 11, 11, 0.06);
  color: var(--text-primary);
}
.tab:focus-visible { outline: 2px solid var(--series-1); outline-offset: -2px; }

/* Unit suffix on a figure: present but recessive, so the number leads. */
.unit { color: var(--text-muted); font-size: 0.85em; margin-left: 1px; }

/* ---------------------------------------------------------------- layout --- */

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 356px;
  min-height: 0;
}

.map-pane { position: relative; min-height: 0; }
#map { position: absolute; inset: 0; background: var(--page); }

/* No skeleton flash on refetch: hold the previous render, dimmed. */
#map.is-refetching { opacity: 0.55; transition: opacity 120ms ease; }

.loading {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 5px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-1);
  color: var(--text-secondary);
  font-size: 12px;
  z-index: 3;
}

/* ---------------------------------------------------------------- legend --- */

.legend {
  position: absolute;
  left: 14px;
  bottom: 20px;
  z-index: 2;
  width: 244px;
  padding: 12px 13px 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(252, 252, 251, 0.94);
  backdrop-filter: blur(6px);
}

.legend-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 9px;
}

.legend-ramp {
  display: flex;
  height: 10px;
  border-radius: 3px;
  overflow: hidden;
  gap: 2px; /* 2px surface gap between fills, not borders */
}
.legend-ramp span { flex: 1 1 0; }

/* Continuous measures get a continuous key. Dropping the 2px gaps is the whole
   difference -- banded swatches would imply steps the percentile does not have. */
.legend-ramp.is-smooth { gap: 0; }
.legend-ramp.is-smooth span { flex: 1 1 100%; }

.legend-ticks {
  display: flex;
  justify-content: space-between;
  margin-top: 5px;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
}

.legend-foot {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--gridline);
  font-size: 11.5px;
  color: var(--text-secondary);
}

.legend-zero {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.legend-zero i {
  width: 11px; height: 11px; border-radius: 2px;
  background: var(--seq-zero);
  border: 1px solid var(--baseline);
}

/* --------------------------------------------------------------- tooltip --- */

.map-tooltip {
  position: absolute;
  z-index: 4;
  pointer-events: none;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(252, 252, 251, 0.97);
  font-size: 12.5px;
  white-space: nowrap;
  transform: translate(-50%, calc(-100% - 12px));
}
.map-tooltip b { font-variant-numeric: tabular-nums; }
.map-tooltip small { display: block; color: var(--text-muted); font-size: 11px; }

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

.detail {
  border-left: 1px solid var(--border);
  background: var(--surface-1);
  overflow-y: auto;
  padding: var(--pad);
  position: relative;
}

.detail-empty h2 { margin: 6px 0 8px; font-size: 15px; }
.detail-empty p  { margin: 0 0 10px; font-size: 13px; color: var(--text-secondary); }
.detail-empty .caution {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--page);
  font-size: 12.5px;
}

.detail-close {
  position: absolute;
  top: 10px; right: 12px;
  width: 26px; height: 26px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--page);
  color: var(--text-secondary);
  font-size: 17px;
  line-height: 1;
  cursor: pointer;
}
.detail-close:hover { color: var(--text-primary); }

/* Hero figure: proportional figures, system sans -- never tabular, never serif. */
.stat { margin: 2px 0 14px; }
.stat-value {
  font-size: 38px;
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.05;
}
.stat-label { font-size: 12.5px; color: var(--text-secondary); margin-top: 2px; }

.kv { margin: 0 0 18px; display: grid; gap: 7px; }
.kv > div { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
.kv dt { font-size: 12px; color: var(--text-muted); margin: 0; }
.kv dd { margin: 0; font-size: 12.5px; text-align: right; color: var(--text-primary); }

/* The counts a derived figure was computed from, under the figure itself. A
   percentage against a cell's own average is only checkable if the two numbers
   behind it are visible. */
.kv-note {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.mono { font-family: ui-monospace, "Cascadia Mono", Menlo, monospace; font-size: 11.5px; }

.chart-block { margin-bottom: 20px; }
.chart-block h3 {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

/* Nominal categories -> one hue for every bar. Bar length carries the value;
   spending the hue channel on it too would re-encode what length already shows. */
.bars { display: grid; gap: 9px; }
.bar-row { display: grid; grid-template-columns: 92px minmax(0, 1fr) auto; gap: 9px; align-items: center; }
.bar-name  { font-size: 12px; color: var(--text-secondary); }
.bar-track { display: block; height: 9px; background: var(--gridline); border-radius: 4px; overflow: hidden; }
.bar-fill  {
  display: block;   /* an inline span ignores width/height */
  height: 100%;
  background: var(--series-1);
  border-radius: 0 4px 4px 0; /* rounded data-end, square against the baseline */
  min-width: 2px;
  transition: width 160ms ease;
}
.bar-value { font-size: 12px; font-variant-numeric: tabular-nums; color: var(--text-primary); min-width: 40px; text-align: right; }

.spark-wrap { position: relative; }
.spark { width: 100%; height: 58px; display: block; overflow: visible; }
.spark-axis {
  display: flex;
  justify-content: space-between;
  margin-top: 4px;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
}

/* Always visible, so a monthly value is never reachable only by hovering. */
.spark-readout {
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-secondary);
  min-height: 18px;
}

.bar-empty { margin: 0; font-size: 12.5px; color: var(--text-muted); }

/* Hourly profile: 24 columns, one per block.
   A column chart rather than 24 rows of the .bar-row form above, because the
   x axis here is ordered and cyclic -- the shape across the day is the point,
   and a stack of horizontal bars hides it. One hue throughout: height already
   carries the value, so colour is spent only on marking the selected block. */
.hours {
  display: grid;
  grid-template-columns: repeat(24, 1fr);
  align-items: end;
  gap: 2px;
  height: 56px;
  margin-top: 4px;
}

.hours i {
  display: block;
  min-height: 1px;
  border-radius: 2px 2px 0 0;
  background: var(--gridline);
}
.hours i[data-on] { background: var(--series-1); }
.hours i[data-selected] { background: var(--text-primary); }

.hours-axis {
  display: flex;
  justify-content: space-between;
  margin-top: 4px;
  font-size: 10.5px;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
}

.mix { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.mix th {
  text-align: left;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  padding: 0 8px 6px 0;
  border-bottom: 1px solid var(--gridline);
}
.mix td { padding: 6px 8px 6px 0; border-bottom: 1px solid var(--gridline); color: var(--text-secondary); }
.mix tr:last-child td { border-bottom: 0; }
.mix .num, .data .num { text-align: right; font-variant-numeric: tabular-nums; }
.mix td.num { color: var(--text-primary); }
.mix .nibrs { font-family: ui-monospace, Menlo, monospace; font-size: 11px; color: var(--text-muted); }

/* ------------------------------------------------------------ table view --- */

.tableview {
  position: fixed;
  inset: auto 0 0 0;
  height: 62vh;
  z-index: 20;
  background: var(--surface-1);
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  box-shadow: 0 -18px 46px rgba(11, 11, 11, 0.16);
}
.tableview-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px; border-bottom: 1px solid var(--border);
}
.tableview-head h2 { margin: 0; font-size: 14px; font-weight: 600; }
.tableview-scroll { overflow: auto; padding: 0 20px 20px; }

.data { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.data th {
  position: sticky; top: 0;
  background: var(--surface-1);
  text-align: left;
  font-size: 11px; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--text-muted);
  padding: 10px 10px 8px 0;
  border-bottom: 1px solid var(--baseline);
}
.data td { padding: 6px 10px 6px 0; border-bottom: 1px solid var(--gridline); color: var(--text-secondary); }
.data td:nth-child(3) { color: var(--text-primary); }
.data tr:hover td { background: rgba(11, 11, 11, 0.04); }

/* ----------------------------------------------------------- methodology --- */

.sheet {
  width: min(720px, 92vw);
  max-height: 84vh;
  padding: 26px 30px 30px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface-1);
  color: var(--text-primary);
  overflow-y: auto;
}
.sheet::backdrop { background: rgba(11, 11, 11, 0.38); }
.sheet-close {
  position: absolute; top: 14px; right: 18px;
  width: 28px; height: 28px;
  border: 1px solid var(--border); border-radius: 6px;
  background: var(--page); color: var(--text-secondary);
  font-size: 18px; line-height: 1; cursor: pointer;
}
.sheet h2 { margin: 0 0 4px; font-size: 17px; }
.sheet h3 {
  margin: 22px 0 8px; font-size: 11.5px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted);
}
.sheet p, .sheet li { font-size: 13px; color: var(--text-secondary); }
.sheet ul { margin: 0; padding-left: 18px; }
.sheet li { margin-bottom: 6px; }
.sheet a { color: var(--series-1); }
.sheet .callout {
  padding: 12px 14px; margin: 14px 0 0;
  border: 1px solid var(--border); border-radius: 8px; background: var(--page);
}
.sheet dl { display: grid; gap: 6px; margin: 0; }
.sheet dl > div { display: flex; justify-content: space-between; gap: 16px; font-size: 12.5px; }
.sheet dt { color: var(--text-muted); }
.sheet dd { margin: 0; text-align: right; }

/* ---------------------------------------------------------------- mobile --- */

@media (max-width: 900px) {
  .layout { grid-template-columns: minmax(0, 1fr); grid-template-rows: minmax(0, 1fr) auto; }
  .detail { border-left: 0; border-top: 1px solid var(--border); max-height: 44vh; }
  .legend { width: 200px; bottom: 14px; }
  .topbar { flex-direction: column; align-items: flex-start; gap: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}