/* ════════════════════════════════════════════════════════════════
   Sorting from Scratch · Tutorial-specific styles
   Builds on tutorial.css design tokens.
   ════════════════════════════════════════════════════════════════ */

/* ── Timeline used in §2 (history) ─────────────────────────────── */
.sort-timeline {
  margin: 1.75rem 0 2.25rem;
  border-left: 1px solid var(--tut-border);
  padding-left: 1.25rem;
}

.sort-timeline-row {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 1.25rem;
  padding: 0.55rem 0;
  align-items: baseline;
}

.sort-timeline-year {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--tut-accent);
  font-weight: 600;
  letter-spacing: 0.04em;
  position: relative;
}

.sort-timeline-year::before {
  content: '';
  position: absolute;
  left: -1.95rem;
  top: 0.4em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--tut-accent);
  box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.15);
}

.sort-timeline-body {
  font-size: 0.97rem;
  line-height: 1.65;
  color: var(--tut-soft);
}

.sort-timeline-body strong { color: var(--tut-text); font-weight: 600; }

/* ── Comparison table reused across multiple sections ─────────── */
.sort-table-wrap { overflow-x: auto; margin: 1.5rem 0; }

.sort-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  font-family: var(--mono);
}

.sort-table th,
.sort-table td {
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--tut-border-soft);
  text-align: left;
  vertical-align: top;
  color: var(--tut-soft);
}

.sort-table thead th {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tut-muted);
  font-weight: 700;
  background: rgba(167, 139, 250, 0.04);
  border-bottom-color: var(--tut-border);
}

.sort-table tbody tr:hover { background: rgba(167, 139, 250, 0.03); }

.sort-table td.num {
  font-variant-numeric: tabular-nums;
  color: var(--tut-text);
}
.sort-table td em { font-style: italic; color: var(--tut-text); }
.sort-table .good { color: var(--tut-success); }
.sort-table .bad  { color: var(--tut-danger); }
.sort-table .meh  { color: var(--tut-warn); }

/* ── Race legend used in the live-race widget ─────────────────── */
.race-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 0.9rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  margin-top: 0.5rem;
}

.race-legend .race-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--tut-soft);
  padding: 0.18rem 0.5rem;
  border-radius: 4px;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--tut-border-soft);
}

.race-legend .race-dot {
  width: 10px; height: 10px; border-radius: 50%;
  box-shadow: 0 0 6px currentColor;
}

/* ── Sort-key bit-explorer used in the draw-call case study ───── */
.bits-row {
  display: flex;
  gap: 2px;
  font-family: var(--mono);
  margin: 0.65rem 0 0.25rem;
  flex-wrap: wrap;
}

.bits-cell {
  flex: 1 1 auto;
  min-width: 16px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: var(--tut-soft);
  background: var(--tut-bg);
  border: 1px solid var(--tut-border-soft);
  border-radius: 3px;
  user-select: none;
}

.bits-cell.on  { background: var(--tut-accent); color: #fff; border-color: var(--tut-accent-2); }
.bits-cell.fld-vp { background: rgba(248, 113, 113, 0.18); border-color: rgba(248,113,113,0.35); }
.bits-cell.fld-trans { background: rgba(251, 191, 36, 0.18); border-color: rgba(251,191,36,0.35); }
.bits-cell.fld-shader { background: rgba(96, 165, 250, 0.18); border-color: rgba(96,165,250,0.35); }
.bits-cell.fld-depth { background: rgba(52, 211, 153, 0.18); border-color: rgba(52,211,153,0.35); }

.bits-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--tut-muted);
  margin-top: 0.4rem;
}

.bits-legend .swatch {
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 2px;
  margin-right: 0.35rem;
  vertical-align: -1px;
}

/* ── Card visual on the home index for this tutorial ───────────── */
.tut-card-visual.sort-bg,
.game-card-visual.sort-bg {
  background:
    radial-gradient(circle at 30% 35%, rgba(52, 211, 153, 0.22), transparent 45%),
    radial-gradient(circle at 75% 70%, rgba(167, 139, 250, 0.30), transparent 45%),
    linear-gradient(135deg, #0a1a18 0%, #0a0a1f 60%, #1a0c22 100%);
}