/* ── BARS ── */
/* Bar chart container, bar elements, value labels */

/* ── BAR CHART CONTAINER ── */
#bar-chart {
  width: 100%;
  height: var(--bar-canvas-height);
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: var(--bar-gap);
  padding: var(--space-4) var(--space-6) var(--space-5);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

/* ── CANVAS GRID LINES ── */
#bar-chart::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to top, var(--border-subtle) 1px, transparent 1px);
  background-size: 100% 25%;
  opacity: 0.3;
  pointer-events: none;
}

/* ── INDIVIDUAL BAR ── */
.bar {
  flex: 1;
  min-width: 12px;
  max-width: 80px;
  min-height: var(--bar-min-height);
  border-radius: 3px 3px 0 0;
  background-color: var(--bar-idle);
  position: relative;
  transition:
    height var(--transition-height),
    background-color var(--transition-color);
  will-change: height, background-color;
  cursor: default;
  box-shadow: var(--shadow-bar);
}

/* ── BAR TOP GLOW ── */
.bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: 3px 3px 0 0;
  background: rgba(255, 255, 255, 0.2);
  pointer-events: none;
}

/* ── BAR VALUE LABEL ── */
.bar-label {
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  font-size: var(--text-xs);
  font-family: var(--font-display);
  font-weight: 700;
  color: rgba(255, 255, 255, 0.9);
  white-space: nowrap;
  z-index: var(--z-bar-label);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-ui);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
  letter-spacing: 0.02em;
}

/* Show labels on hover always */
.bar:hover .bar-label {
  opacity: 1;
}

/* Always show labels when class is present */
.bars-show-labels .bar-label {
  opacity: 1;
}

/* Container query: hide label when bar is too narrow to fit text */
.bar {
  container-type: inline-size;
}

@container (max-width: 28px) {
  .bar-label {
    opacity: 0 !important;
  }
}

/* ── CANVAS EMPTY STATE ── */
.canvas-empty {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--space-3);
  color: var(--text-muted);
  font-size: var(--text-sm);
  pointer-events: none;
}

/* ── ACTIVE WINDOW INDICATOR ── */
.partition-indicator {
  position: absolute;
  bottom: 0;
  height: 2px;
  background: var(--bar-active);
  opacity: 0.5;
  border-radius: var(--radius-pill);
  transition: left var(--transition-color), width var(--transition-color);
  pointer-events: none;
}