/* stack_queue.css — the element boxes (top/front highlighted) + the base line. */
.lv-box { fill: rgba(56, 189, 248, 0.18); stroke: #38bdf8; stroke-width: 1.4; }
.lv-box-hi { fill: rgba(251, 191, 36, 0.25); stroke: #fbbf24; }
.lv-boxv { fill: #eef7ff; font-size: 18px; font-weight: 700; font-variant-numeric: tabular-nums; }
.lv-side { fill: #94a3b8; font-size: 12px; font-weight: 600; }
.lv-side2 { stroke: rgba(255, 255, 255, 0.3); stroke-width: 2; }