/* Grid puzzle tool base (shared look of the grid-puzzle pages; each page carries its own copy). The board is paper:
   it keeps fixed black-on-white colors in both themes, like the puzzle on a printed page. */
.gp { --gp-ink: #111; --gp-paper: #fff; --gp-line: #9a9a9a; --gp-thin: #cfcfcf; --gp-hi: #e6dcfb; --gp-hi2: #f4ecd6;
  --gp-sel: #6d4aff; --gp-sol: #5b5b5b; --gp-bad: #f7c9c4; --gp-diff: #ffe08a; }
.gp-bar { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: flex-end; margin-bottom: 14px; }
.gp-bar .field { flex: 0 0 auto; }
.gp-bar select, .gp-bar input[type=number] { width: auto; min-height: 40px; padding: 6px 12px; }
.gp-bar select { padding-right: 34px; }
.gp-bar input[type=number] { width: 84px; }
.gp-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; padding: 4px; margin: 0 -4px; }
.gp-board { position: relative; margin: 0 auto; background: var(--gp-paper); color: var(--gp-ink); user-select: none; -webkit-user-select: none; touch-action: manipulation; }
.gp-board:focus { outline: none; }
.gp-board:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
.gp-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.gp-actions + .gp-actions { margin-top: 8px; }
.gp-more { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 12px; }
.gp-pad { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 6px; margin: 14px auto 0; max-width: 420px; }
.gp-pad button { font: inherit; font-size: 18px; font-weight: 500; min-height: 44px; border-radius: var(--r-md); border: 1px solid var(--line); background: var(--canvas); color: var(--ink); cursor: pointer; }
.gp-pad button:hover { border-color: var(--ink); }
.gp-pad button.wide { grid-column: span 2; font-size: 15px; }
.gp-note { font-size: 14px; color: var(--muted); margin: 10px 0 0; }
.gp-explain { background: var(--canvas); border: 1px solid var(--line); border-radius: var(--r-md); padding: 12px 14px; margin-top: 12px; font-size: 15px; }
.gp-explain b { color: var(--ink); }
.gp-steps { margin: 12px 0 0; padding-left: 22px; font-size: 15px; max-height: 320px; overflow-y: auto; }
.gp-steps li { margin: 4px 0; }
.gp-steps li.cur { font-weight: 600; color: var(--ink); }
.gp-io textarea { font-family: var(--mono); font-size: 14px; }
.gp-sel-panel { margin-top: 12px; }
.gp-side .btn { flex: 1 1 auto; }
@media (max-width: 420px) { .gp-side .btn { padding-left: 14px; padding-right: 14px; } }
/* Logic grid puzzle */
.lg-cat { border-top: 1px solid var(--line); padding: 12px 0 4px; }
.lg-cat:first-child { border-top: 0; padding-top: 0; }
.lg-cat .row { align-items: flex-end; flex-wrap: nowrap; }
.lg-cname { flex: 1 1 auto; }
.lg-cat > .field { margin-top: 8px; }
.lg-slots { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin-top: 10px; }
.lg-builder > .field select { font-size: 15px; }
.lg-clues { margin: 14px 0 0; padding-left: 26px; }
.lg-clues li { padding: 4px 0; border-bottom: 1px solid var(--line); }
.lg-clues li > span { display: inline; }
.lg-clues li .btn { float: right; margin: -4px 0 0 6px; }
.lg-clues li::after { content: ""; display: block; clear: both; }
.lg-clues .lg-none { list-style: none; margin-left: -26px; color: var(--muted); font-size: 15px; border: 0; }
.lg-gridpanel { margin-top: 16px; }
.lg-gridwrap { display: inline-block; min-width: 100%; }
.lg-grid { border-collapse: collapse; background: var(--gp-paper); color: var(--gp-ink); font-size: 13px; margin: 0 auto; }
.lg-grid th, .lg-grid td { border: 1px solid var(--gp-thin); padding: 0; }
.lg-grid .lg-corner { border: 0; background: var(--gp-paper); }
.lg-ch { font-family: var(--mono); font-weight: 500; text-transform: uppercase; font-size: 11px; letter-spacing: .5px; padding: 4px; text-align: center; border-bottom: 2px solid var(--gp-ink); }
.lg-it { vertical-align: bottom; width: 30px; min-width: 30px; }
.lg-it span { writing-mode: vertical-rl; transform: rotate(180deg); display: inline-block; padding: 6px 0; font-weight: 500; white-space: nowrap; }
.lg-rh { width: 26px; border-right: 0; }
.lg-rh span { writing-mode: vertical-rl; transform: rotate(180deg); font-family: var(--mono); font-weight: 500; text-transform: uppercase; font-size: 11px; letter-spacing: .5px; display: inline-block; padding: 4px 2px; white-space: nowrap; }
.lg-ri { text-align: right; padding: 0 6px !important; font-weight: 500; white-space: nowrap; max-width: 120px; overflow: hidden; text-overflow: ellipsis; height: 30px; }
.lg-x { width: 30px; height: 30px; text-align: center; font-size: 16px; line-height: 1; }
.lg-x.yes { font-weight: 700; color: #0b6b2c; background: #e3f3e6; }
.lg-x.no { color: #8a8a8a; }
.lg-x.hi { box-shadow: inset 0 0 0 2px var(--gp-sel); background-color: var(--gp-hi); }
.lg-off { border: 0 !important; background: var(--gp-paper); }
.lg-grid .lg-end { border-right: 2px solid var(--gp-ink); }
.lg-grid .lg-endr td.lg-x, .lg-grid .lg-endr th { border-bottom: 2px solid var(--gp-ink); }
.lg-sol td.lg-diff { background: var(--gp-diff); color: #111; }