/* Zone D — Tool treemap + Hook health (Wave 2 Stream 4) */

/* Okabe-Ito colorblind-safe palette fallback if not already defined */
:root {
  --series-1: #E69F00;
  --series-2: #56B4E9;
  --series-3: #009E73;
  --series-4: #F0E442;
  --series-5: #0072B2;
  --series-6: #D55E00;
  --series-7: #CC79A7;
  --series-8: #999999;
  /* Error-rate scale (sequential, green→amber→red, CB-safe) */
  --err-0:  #1b9e77;
  --err-10: #d8b365;
  --err-20: #e66101;
  --err-30: #b2182b;
}

#zoneD h2.zone-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 1.2px;
  margin: 0 0 12px;
  text-transform: uppercase;
}

#zoneD .zone-sub {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 8px;
}

.treemap-wrap {
  position: relative;
  width: 100%;
  height: 420px;
  overflow: hidden;
  border-radius: 8px;
  background: var(--panel2);
  border: 1px solid var(--border);
}

.treemap-svg { display: block; width: 100%; height: 100%; }

.treemap-tile {
  cursor: pointer;
  transition: opacity .15s, stroke-width .15s;
}
.treemap-tile:hover { opacity: 0.82; stroke: #fff; stroke-width: 2; }

.treemap-label {
  pointer-events: none;
  font-size: 11px;
  font-weight: 600;
  fill: #0b0d12;
  paint-order: stroke;
  stroke: rgba(255,255,255,0.55);
  stroke-width: 2;
}
.treemap-label.sub { font-size: 10px; font-weight: 400; stroke-width: 1.5; }
.treemap-label.light { fill: #f4f5f8; stroke: rgba(0,0,0,0.55); }

.treemap-tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 12px;
  line-height: 1.45;
  box-shadow: 0 6px 20px rgba(0,0,0,.45);
  z-index: 10;
  white-space: nowrap;
  opacity: 0;
  transition: opacity .1s;
}
.treemap-tooltip.show { opacity: 1; }
.treemap-tooltip strong { color: var(--accent); }
.treemap-tooltip .tt-row { color: var(--muted); }
.treemap-tooltip .tt-row span { color: var(--text); }

.treemap-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--muted);
  font-size: 13px;
}

.treemap-legend {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  color: var(--muted);
  margin-top: 10px;
  flex-wrap: wrap;
}
.treemap-legend .swatch-row {
  display: flex; align-items: center; gap: 6px;
}
.treemap-legend .scale {
  display: inline-block; width: 140px; height: 10px; border-radius: 3px;
  background: linear-gradient(90deg, var(--err-0), var(--err-10), var(--err-20), var(--err-30));
  border: 1px solid var(--border);
}
.treemap-legend .scale-labels {
  display: flex; justify-content: space-between; width: 140px;
  font-size: 10px; color: var(--muted);
}

/* Hook health panel */
.hook-list { display: flex; flex-direction: column; gap: 6px; }

.hook-row {
  display: grid;
  grid-template-columns: 1.4fr 70px 70px 90px 1fr;
  gap: 10px;
  align-items: center;
  padding: 8px 10px;
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  transition: border-color .12s, transform .12s;
}
.hook-row:hover { border-color: var(--accent); transform: translateX(2px); }
.hook-row .hook-name { font-weight: 600; color: var(--text); }
.hook-row .hook-bar {
  position: relative; height: 8px; border-radius: 999px;
  background: var(--panel); border: 1px solid var(--border); overflow: hidden;
}
.hook-row .hook-bar > div {
  position: absolute; inset: 0 auto 0 0; background: var(--accent2);
}
.hook-row.has-errors .hook-bar > div { background: var(--bad); }
.hook-row .num { text-align: right; font-variant-numeric: tabular-nums; color: var(--muted); }
.hook-row .num.err { color: var(--bad); font-weight: 600; }
.hook-row .num.err.zero { color: var(--good); font-weight: 400; }
.hook-row .last-seen { color: var(--muted); font-size: 11px; }

.hook-empty {
  padding: 24px; text-align: center; color: var(--muted); font-size: 13px;
  background: var(--panel2); border: 1px dashed var(--border); border-radius: 8px;
}

.hook-header {
  display: grid;
  grid-template-columns: 1.4fr 70px 70px 90px 1fr;
  gap: 10px;
  padding: 4px 10px;
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .5px;
}
.hook-header .num { text-align: right; }

@media (max-width: 720px) {
  .hook-row, .hook-header { grid-template-columns: 1fr 60px 60px 70px; }
  .hook-row .hook-bar, .hook-header .hook-bar-col { display: none; }
}