/*
  Control Tower, the Kestrel Logistics theme.

  An operations screen rather than a report. Near black, panels that read as instruments,
  condensed labels in small caps, monospace figures so a column of numbers lines up, and
  colour reserved for state. Where Meridian's Ledger theme is a printed document you read
  once, this is a wall display somebody glances at all day.

  Categorical colours are validated, not chosen: lightness band, chroma floor, colour vision
  separation, normal vision separation and surface contrast, all against this exact surface.
  Worst adjacent pair clears delta E 11.9. Re-validate before substituting any of them, and
  keep the order, because adjacency is what is tested.
*/

:root {
  --bg:         #0B0F14;
  --panel:      #121820;
  --panel-2:    #182029;
  --land:       #151D26;
  --land-edge:  #26313D;
  --rule:       #1F2833;
  --rule-2:     #2E3A47;
  --text:       #E8EDF2;
  --text-2:     #98A5B3;
  --text-3:     #64717F;

  /* Series slots, fixed order, never cycled */
  --s1: #1C9DB8;   /* cyan   */
  --s2: #A88818;   /* gold   */
  --s3: #D65F92;   /* rose   */
  --s4: #8478DE;   /* violet */

  /* Status. Reserved meaning, always shipped with a label, never colour alone. */
  --ok:     #34D399;
  --warn:   #FBBF24;
  --breach: #F87171;

  --font-sans: 'Barlow Condensed', 'Inter', -apple-system, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --measure: 1200px;

  /*
    Compatibility aliases.

    charts.js is shared across the demo projects and reads the token names the first one
    established. Aliasing here rather than renaming in the chart code keeps a single chart
    library working against four themes, and means a theme only ever declares its own palette.
  */
  --ink:          var(--text);
  --ink-2:        var(--text-2);
  --ink-3:        var(--text-3);
  --rule-strong:  var(--rule-2);
  --paper:        var(--panel);
  --neutral:      var(--text-2);
  --neg:          var(--breach);
  --pos:          var(--ok);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--measure); margin: 0 auto; padding: 0 1.75rem; }

/* ---------------------------------------------------------------- masthead */

.masthead {
  border-bottom: 1px solid var(--rule-2);
  padding: 1.75rem 0 1.1rem;
  margin-bottom: 2.5rem;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.masthead h1 {
  font-family: var(--font-sans);
  font-size: 2.1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin: 0 0 0.15rem;
}
.masthead .sub { color: var(--text-2); font-size: 0.92rem; margin: 0; }
.masthead .meta {
  text-align: right;
  font-size: 0.78rem;
  color: var(--text-3);
  font-family: var(--font-mono);
  line-height: 1.6;
}

.freshness {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-2);
  margin-bottom: 0.1rem;
}
.fresh-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--text-3); flex: none; }
.freshness.is-current { color: var(--ok); }
.freshness.is-current .fresh-dot { background: var(--ok); }
.freshness.is-lagging { color: var(--warn); }
.freshness.is-lagging .fresh-dot { background: var(--warn); }
.freshness.is-stale { color: var(--breach); }
.freshness.is-stale .fresh-dot { background: var(--breach); }

/* ---------------------------------------------------------------- sections */

section { margin: 0 0 3.5rem; }

.section-head {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  border-top: 1px solid var(--rule-2);
  padding-top: 0.8rem;
  margin-bottom: 1.1rem;
}
.section-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--s1);
  letter-spacing: 0.1em;
}
.section-head h2 {
  font-family: var(--font-sans);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin: 0;
}
.lede { color: var(--text-2); max-width: 74ch; margin: 0 0 1.5rem; font-size: 0.97rem; }
.lede b, .lede strong { color: var(--text); font-weight: 600; }

/* ---------------------------------------------------------------- figures */

.hero {
  display: flex;
  align-items: baseline;
  gap: 1.1rem;
  flex-wrap: wrap;
  margin: 1.5rem 0 0.5rem;
}
.hero-value {
  /* Sans, not the condensed display face, and proportional figures. tabular at this size
     makes a number look loose. */
  font-family: var(--font-body);
  font-size: 4.2rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.035em;
  color: var(--breach);
}
.hero-label { color: var(--text-2); font-size: 1rem; max-width: 34ch; }

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(175px, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: 6px;
  overflow: hidden;
  margin: 1.75rem 0;
}
.tile { background: var(--panel); padding: 0.95rem 1.15rem; }
.tile-label {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 0.2rem;
}
.tile-value {
  font-family: var(--font-mono);
  font-size: 1.45rem;
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.tile-delta { font-size: 0.8rem; color: var(--text-3); margin-top: 0.1rem; }
.tile-delta .up { color: var(--ok); }
.tile-delta .down { color: var(--breach); }

.panel {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 1.1rem 1.25rem 1.25rem;
  margin: 1.25rem 0;
}

.figure { margin: 1.5rem 0; }
.figure-head { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; margin-bottom: 0.15rem; }
.figure-title {
  font-family: var(--font-sans);
  font-size: 1.08rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0;
}
.figure-note { color: var(--text-3); font-size: 0.85rem; margin: 0 0 0.9rem; max-width: 78ch; }

.chart { position: relative; width: 100%; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }

.legend {
  display: flex; gap: 1.1rem; flex-wrap: wrap;
  margin: 0.4rem 0 0.85rem;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-2);
}
.legend-item { display: inline-flex; align-items: center; gap: 0.42rem; }
.legend-key { width: 11px; height: 11px; border-radius: 2px; flex: none; }
.legend-key.line { height: 3px; width: 18px; border-radius: 2px; }

.tbl-toggle {
  background: none;
  border: 1px solid var(--rule-2);
  border-radius: 4px;
  color: var(--text-3);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.15rem 0.6rem;
  cursor: pointer;
}
.tbl-toggle:hover { color: var(--text); border-color: var(--text-3); }

/* ---------------------------------------------------------------- tables */

table { border-collapse: collapse; width: 100%; font-size: 0.87rem; margin: 0.6rem 0 0; }
caption { text-align: left; color: var(--text-3); font-size: 0.8rem; padding-bottom: 0.45rem; }
th, td { padding: 0.48rem 0.85rem 0.48rem 0; text-align: left; border-bottom: 1px solid var(--rule); }
th {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 500;
  border-bottom: 1px solid var(--rule-2);
  white-space: nowrap;
}
td.num, th.num { text-align: right; font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
tr.total td { border-top: 1px solid var(--rule-2); border-bottom: none; font-weight: 600; }
.neg, .breach { color: var(--breach); }
.pos { color: var(--ok); }
.warn { color: var(--warn); }
.muted { color: var(--text-3); }
.data-table[hidden] { display: none; }

.pill {
  display: inline-block;
  border-radius: 999px;
  padding: 0.05rem 0.55rem;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid currentColor;
}

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

.tip {
  position: fixed;
  pointer-events: none;
  z-index: 40;
  background: var(--panel-2);
  border: 1px solid var(--rule-2);
  border-radius: 5px;
  padding: 0.5rem 0.7rem;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--text);
  max-width: 280px;
  opacity: 0;
  transition: opacity 0.1s;
}
.tip[data-show] { opacity: 1; }
.tip b { font-weight: 600; }
.tip .tip-row { display: flex; justify-content: space-between; gap: 1.2rem; }
.tip .tip-row span:last-child { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* ---------------------------------------------------------------- states */

.loading { padding: 5rem 0; text-align: center; color: var(--text-3); }
.err {
  border-left: 3px solid var(--breach);
  padding: 0.85rem 1.1rem;
  background: var(--panel);
  color: var(--text);
  margin: 2rem 0;
}

footer {
  border-top: 1px solid var(--rule-2);
  margin-top: 3.5rem;
  padding: 1.5rem 0 3.5rem;
  color: var(--text-3);
  font-size: 0.83rem;
}
footer p { margin: 0 0 0.5rem; max-width: 78ch; }
.badge {
  display: inline-block;
  border: 1px solid var(--rule-2);
  border-radius: 3px;
  padding: 0.05rem 0.45rem;
  font-family: var(--font-sans);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-2);
}

@media (max-width: 760px) {
  .wrap { padding: 0 1rem; }
  .hero-value { font-size: 2.9rem; }
  .masthead .meta { text-align: left; }
}

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