/* instruments.css — meters, panels, sparklines, counters, watermarks.
 *
 * Static-first: SVG presentation attributes in the markup already carry the
 * FINAL data state (rect widths, polyline points). Everything here styles
 * those final states; src/motion/instruments.js only animates toward them.
 *
 * All colors from tokens.css. No raw hex. Zero inline styles.
 */

/* ---------- Meters ---------- */

svg.meter {
  display: block;
  width: 100%;
  height: 4px;
}

svg.meter .meter-track { fill: var(--gray-2); }
svg.meter .meter-fill  { fill: var(--amber-deep); }

/* On the ink panel the track recedes and the fill brightens. */
.panel svg.meter .meter-track { fill: var(--panel-track); }
.panel svg.meter .meter-fill  { fill: var(--amber); }

/* Low-value rule: a hairline fill (width="2") is an intentional reading —
   "measured, and measured low" — never an empty broken bar. The numeral
   beside it carries the truth. */
svg.meter[data-meter="0"] .meter-fill,
svg.meter .meter-fill[width="2"] {
  fill: var(--gray-1);
}
.panel svg.meter[data-meter="0"] .meter-fill,
.panel svg.meter .meter-fill[width="2"] {
  fill: var(--gray-3);
}

/* Mini meters — library index rows. Same instrument, smaller register. */
svg.meter.meter--mini { height: 3px; }

.instrument-num--mini { font-size: 0.8125rem; }

/* One mini meter line inside an index row: abbr label · meter · numeral. */
.row-meter {
  display: grid;
  grid-template-columns: 2.6rem 1fr 3ch;
  align-items: center;
  gap: 0.6rem;
}

.row-meter .mono-label {
  font-size: 0.625rem;
  color: var(--gray-1);
}

/* Mini sparkline — the row's trend, quieter than the panel version. */
svg.sparkline.sparkline--mini {
  height: 1.4rem;
  margin-top: 0.15rem;
}

/* ---------- Instrument rows (label · meter · numeral) ---------- */

.instrument-row {
  display: grid;
  grid-template-columns: clamp(6.5rem, 16vw, 9.5rem) 1fr 3.5ch;
  align-items: center;
  gap: clamp(0.75rem, 2.5vw, 1.5rem);
  padding-block: 0.65rem;
}

.instrument-row .mono-label {
  color: var(--gray-3);
}

.panel .instrument-row .mono-label {
  color: var(--gray-1);
}

/* Numeral — mono, amber, tabular, right-aligned. Fixed column width so the
   count-up never reflows the row (CLS 0). */
.instrument-num {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
  text-align: right;
  color: color-mix(in srgb, var(--amber-deep) 72%, var(--ink));
}

.panel .instrument-num { color: var(--amber); }

/* Composite (opportunity) row reads one register louder. */
.instrument-row--composite {
  padding-block: 0.9rem;
}
.instrument-row--composite .instrument-num {
  font-size: 1.5rem;
}
.instrument-row--composite .mono-label {
  color: var(--gray-4);
}
.panel .instrument-row--composite .mono-label {
  color: var(--gray-2);
}

/* ---------- The ink panel ---------- */
/* Sits ON the paper as an object — bounded width, breathing margins, never
   full-bleed (continuity rule). */

.panel {
  background: var(--panel);
  color: var(--paper);
  border-radius: 6px;
  padding: clamp(1.25rem, 3.5vw, 2.25rem);
  max-width: 46rem;
  box-shadow:
    0 1px 2px color-mix(in srgb, var(--ink) 20%, transparent),
    0 12px 32px -18px color-mix(in srgb, var(--ink) 55%, transparent);
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1rem;
}

.panel .rule { background: var(--panel-track); }

/* Small mono stat (e.g. recency) inside a panel. */
.panel-stat {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding-block: 0.65rem;
}

.panel-stat .stat-value {
  font-family: var(--font-mono);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  color: var(--paper);
}

/* ---------- Sparklines ---------- */

svg.sparkline {
  display: block;
  width: 100%;
  height: clamp(3rem, 8vw, 4.5rem);
}

svg.sparkline .spark-path {
  fill: none;
  stroke: var(--green);
  stroke-width: 1.6px;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.panel svg.sparkline .spark-path { stroke: var(--green-bright); }

/* Latest data point — a zero-length round-capped path (survives the
   non-uniform viewBox scale that would turn a <circle> into an ellipse). */
svg.sparkline .spark-dot {
  fill: none;
  stroke: var(--amber);
  stroke-width: 7px;
  stroke-linecap: round;
}

.spark-axis {
  display: flex;
  justify-content: space-between;
  margin-top: 0.35rem;
}

/* ---------- Sample watermark + abridge marker (honesty model) ---------- */
/* Sticky inside the showcase container: visible at EVERY scroll position of
   the sample brief (spec §3/§6 hard requirement). */

.watermark {
  position: sticky;
  top: 0.75rem;
  z-index: 20;
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-mono-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--gray-4);
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  border: 1px solid var(--rule);
  padding: 0.45rem 0.8rem;
  backdrop-filter: blur(2px);
}

.abridge-marker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-mono-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--gray-3);
  border: 1px dashed var(--rule);
  padding: 0.45rem 0.8rem;
}

/* Flow spacer at the end of the sample article: the sticky watermark's final
   resting slot (bottom of its containing block) lands in this empty band
   instead of on top of the abridge marker. */
.brief--sample::after {
  content: '';
  display: block;
  height: 3.25rem;
}

/* Persistent ILLUSTRATIVE tag beside animated method meters. */
.illustrative-label {
  font-family: var(--font-mono);
  font-size: var(--text-mono-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--amber-deep);
  border-bottom: 1px solid color-mix(in srgb, var(--amber-deep) 45%, transparent);
  padding-bottom: 0.1rem;
}