/* Algorithm sets: case cards, diagrams, practice. 3D cube styles come from cube/view.js. */
.al-bar { display: grid; gap: 12px; margin-bottom: 16px; }
.al-sets { justify-self: start; }
.al-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; }
.al-count { margin: 0; }
.al-row .btn-primary { margin-left: auto; }
.al-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 330px), 1fr)); gap: 12px; }
.al-card { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 14px; background: var(--soft); border-radius: var(--r-lg); padding: 16px; border: 1px solid transparent; }
.al-card.is-learned { border-color: var(--line); background: var(--canvas); }
.al-fig .al-svg { width: 96px; height: 96px; display: block; }
.al-t { margin: 0; font-size: 18px; font-weight: 600; letter-spacing: -.01em; color: var(--ink); }
.al-t span { font-weight: 400; color: var(--muted); font-size: 15px; }
.al-grp { margin: 2px 0 8px; }
.al-alg { margin: 0 0 6px; }
.al-alg code { font-family: var(--mono); font-size: 15px; color: var(--ink); background: none; padding: 0; overflow-wrap: anywhere; line-height: 1.6; }
.al-alg span { border-radius: 4px; padding: 0 1px; }
.al-alg span.cur { background: var(--ink); color: var(--canvas); }
.al-alg span.done { color: var(--subtle); }
.al-auf { color: var(--muted); }
.al-alts { margin: 0 0 6px; font-size: 13px; line-height: 1.6; }
.al-alts code { font-family: var(--mono); font-size: 13px; color: var(--body); background: none; padding: 0; margin-right: 8px; overflow-wrap: anywhere; }
.al-alts code + code::before { content: "\00b7\00a0"; color: var(--subtle); }
.al-rec { margin: 0 0 10px; font-size: 14px; color: var(--muted); line-height: 1.45; }
.al-btns { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.al-btns .btn { min-height: 40px; }
.al-lbtn[aria-pressed="true"] { background: var(--ink); color: var(--canvas); }
.al-best { font-size: 12px; }
.al-3d { margin-top: 8px; }
.al-empty { margin-top: 12px; }
/* diagram colors: puzzle colors only */
.al-svg .al-body { fill: #151515; }
.al-s-y { fill: var(--st-y); } .al-s-w { fill: var(--st-w); } .al-s-r { fill: var(--st-r); } .al-s-o { fill: var(--st-o); }
.al-s-g { fill: var(--st-g); } .al-s-b { fill: var(--st-b); } .al-s-n { fill: #6d6d6d; } .al-s-q { fill: #3d3d3d; }
.al-svg .al-line { fill: none; stroke: #111; stroke-width: 2.2; stroke-linecap: round; }
.al-svg .al-halo { fill: none; stroke: #fff; stroke-width: 4.6; stroke-linecap: round; opacity: .85; }
.al-svg .al-ah { fill: #111; stroke: #fff; stroke-width: .8; }
/* practice */
.al-pr { margin-bottom: 16px; }
.al-pr-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.al-pr-head .panel-h { margin: 0; }
.al-pr-body { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; align-items: start; }
.al-pr-time { font-family: var(--mono); font-size: 48px; line-height: 1; margin: 8px 0 8px; color: var(--ink); font-variant-numeric: tabular-nums; }
.al-pr-hint { margin: 0 0 12px; min-height: 44px; }
.al-pr-ans { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 12px; background: var(--canvas); border-radius: var(--r-md); padding: 12px; margin-bottom: 12px; }
.al-pr-fig .al-svg { width: 96px; height: 96px; display: block; }
.al-pr-ans p { margin: 0 0 4px; }
.al-pr-stats { margin: 10px 0 0; }
/* demos in the guide text */
.al-demo { display: grid; grid-template-columns: minmax(0, 200px) minmax(0, 1fr); gap: 16px; align-items: center; background: var(--soft); border-radius: var(--r-lg); padding: 12px 20px 16px; margin: 8px 0 16px; min-height: 200px; }
.al-demo .eyebrow { margin: 0 0 6px; }
.al-demo-moves { font-size: 14px; margin-top: 0; }
.al-demo-moves li { padding: 2px 7px; min-width: 32px; }
.al-demo-cap { min-height: 22px; margin: 8px 0 0; }
.prose table.al-ref td:nth-child(2), .prose table.al-ref td code { font-family: var(--mono); }
@media (max-width: 700px) {
  .al-pr-body { grid-template-columns: 1fr; }
  .al-row .btn-primary { margin-left: 0; }
  .al-demo { grid-template-columns: 1fr; padding: 8px 12px 14px; }
}
@media (max-width: 380px) {
  .al-card { grid-template-columns: 76px minmax(0, 1fr); padding: 12px; gap: 10px; }
  .al-fig .al-svg { width: 76px; height: 76px; }
}

/* trainer: times per case */
.al-tt { margin-top: 14px; }
.al-tt summary { cursor: pointer; font-weight: 600; color: var(--ink); padding: 6px 0; }
.al-tt-t { font-size: 14px; max-width: 520px; }
.al-tt-t td.num { font-family: var(--mono); text-align: right; }
/* printable sheet: hidden on screen; printing shows only the sheet, one page per set */
.al-print { display: none; }
@media print {
  @page { margin: 10mm; }
  body > *:not(.al-print) { display: none !important; }
  .al-print { display: block; color: #000; background: #fff; }
}
.al-sheet { break-after: page; page-break-after: always; font-family: Inter, system-ui, sans-serif; }
.al-sheet:last-child { break-after: auto; page-break-after: auto; }
.al-sheet h2 { font-size: 13pt; margin: 0 0 3mm; font-weight: 600; }
.al-sheet-g { display: grid; gap: 1.6mm 2mm; }
.al-sheet.c7 .al-sheet-g { grid-template-columns: repeat(7, 1fr); }
.al-sheet.c4 .al-sheet-g { grid-template-columns: repeat(4, 1fr); }
.al-sheet.c3 .al-sheet-g { grid-template-columns: repeat(3, 1fr); }
.al-sc { break-inside: avoid; page-break-inside: avoid; border: 0.2mm solid #bbb; border-radius: 1.5mm; padding: 1.2mm; text-align: center; }
.al-sc-f .al-svg { display: block; margin: 0 auto; width: 13mm; height: 13mm; }
.al-sheet.c4 .al-sc-f .al-svg, .al-sheet.c3 .al-sc-f .al-svg { width: 22mm; height: 22mm; }
.al-sc-t { margin: 0.5mm 0 0.3mm; font-size: 6pt; font-weight: 600; line-height: 1.15; }
.al-sc-t span { font-weight: 400; color: #555; }
.al-sc-a { margin: 0; font-family: "DM Mono", ui-monospace, monospace; font-size: 5.8pt; line-height: 1.2; overflow-wrap: anywhere; }
.al-sheet.c4 .al-sc-t, .al-sheet.c3 .al-sc-t { font-size: 8pt; } .al-sheet.c4 .al-sc-a, .al-sheet.c3 .al-sc-a { font-size: 8pt; }
.al-sheet-f { margin: 2mm 0 0; font-size: 6.5pt; color: #555; }
.al-sheet .al-svg .al-body { fill: #151515; }
.al-sheet .al-s-y { fill: #ffd500; } .al-sheet .al-s-w { fill: #fff; } .al-sheet .al-s-r { fill: #c41e3a; } .al-sheet .al-s-o { fill: #ff5800; }
.al-sheet .al-s-g { fill: #009e60; } .al-sheet .al-s-b { fill: #0051ba; } .al-sheet .al-s-n { fill: #8a8a8a; } .al-sheet .al-s-q { fill: #555; }