/* RadarChart — multi-dimension profile comparison (owner decision 2026-07-07).
   ≤8 axes, 1–2 series max: the current series wears --chart-1 (2px stroke,
   flat ~10% wash, ≥8px vertex markers with a 2px surface ring); a comparison
   period is context, so it wears --chart-muted with no fill (emphasis form,
   not a second identity hue). Grid rings and spokes are solid hairlines;
   axis labels wear text tokens. Single-series compact variant carries no
   legend — the title names it. Visual source: tokens.css. */

.radar {
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
  max-width: 460px;
  padding: 21px;
  background: var(--canvas);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-1);
  font-family: var(--font-sans);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

.radar__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}
.radar__title {
  margin: 0;
  font-size: var(--fs-6);
  font-weight: var(--fw-heavy);
  letter-spacing: -0.01em;
}
.radar__sub {
  margin: 2px 0 0;
  font-size: var(--fs-2);
  color: var(--text-4);
}

/* Legend — present only for 2 series; swatch mirrors the line mark. */
.radar__legend {
  display: flex;
  align-items: center;
  gap: 16px;
}
.radar__legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-2);
  color: var(--text-3);
  white-space: nowrap;
}
.radar__swatch {
  width: 14px;
  height: 2px;
  border-radius: 1px;
  flex: none;
}
.radar__swatch--current {
  background: var(--chart-1-line);
}
.radar__swatch--previous {
  /* Mirrors the dashed comparison stroke. */
  background: repeating-linear-gradient(90deg, var(--chart-muted) 0 5px, transparent 5px 8px);
}

/* Plot. */
.radar__plot {
  position: relative;
  align-self: center;
  width: min(100%, 320px);
}
.radar__plot svg {
  display: block;
  width: 100%;
  height: auto;
  /* Axis labels may extend past the viewBox edge; the card padding absorbs them. */
  overflow: visible;
}
.radar__grid {
  fill: none;
  stroke: var(--border);
  stroke-width: 1;
}
.radar__spoke {
  stroke: var(--border);
  stroke-width: 1;
}
.radar__axis-label {
  fill: var(--text-4);
  font-size: 11px;
  font-weight: var(--fw-semibold);
  font-family: var(--font-sans);
}
/* Ring-scale anchors on the top spoke — the 0–100 scale must be readable
   without hover. */
.radar__scale text {
  fill: var(--text-5);
  font-size: 10px;
  font-family: var(--font-sans);
  font-variant-numeric: tabular-nums;
}

/* Series polygons. */
.radar__area {
  fill: var(--chart-1);
  fill-opacity: 0.14;
  stroke: var(--chart-1-line);
  stroke-width: 2;
  stroke-linejoin: round;
}
.radar__area--previous {
  fill: none;
  stroke: var(--chart-muted);
  /* Comparison period reads as an outline sketch — dashed stroke on the pale
     brand-cyan step (series style channel, not a gridline). */
  stroke-dasharray: 5 4;
}

/* Vertex markers — ≥8px marks with a 2px surface ring; hover/focus readout. */
.radar__dot {
  /* Vertex markers wear ink — black points on the bright line. */
  fill: var(--chart-emphasis);
  stroke: var(--canvas);
  stroke-width: 2;
  transition: r var(--dur-1) var(--ease-out);
  outline: none;
  cursor: pointer;
}
.radar__dot:hover,
.radar__dot:focus-visible {
  r: 6;
}

/* Shared hover readout (value leads, label follows). */
.chart-tip {
  position: absolute;
  pointer-events: none;
  transform: translate(-50%, calc(-100% - 10px));
  display: none;
  flex-direction: column;
  gap: 1px;
  padding: 7px 10px;
  border-radius: var(--r-md);
  background: var(--ink-900);
  color: #fff;
  font-size: var(--fs-2);
  line-height: 1.35;
  white-space: nowrap;
  box-shadow: var(--shadow-2);
  z-index: 2;
}
.chart-tip.is-visible {
  display: flex;
}
.chart-tip__value {
  font-weight: var(--fw-heavy);
  font-size: var(--fs-3);
  font-variant-numeric: tabular-nums;
}
.chart-tip__label {
  color: rgba(255, 255, 255, 0.72);
}