/* Parameter Compare & Migrate. Colours are the other tools' tokens, so the
   platform reads as one; the chart's single series is the validated blue. */

:root {
  color-scheme: light;
  --page: #f9f9f7; --surface: #fcfcfb; --surface-2: #f3f2ee;
  --ink: #0b0b0b; --ink-2: #52514e; --muted: #898781;
  --border: rgba(11, 11, 11, 0.10);
  --good-ink: #006300; --warning-ink: #8a5a00; --critical-ink: #b3261e; --critical: #d03b3b;
  --accent: #2a78d6; --focus: #2a78d6;
  --grid: #e1e0d9; --axis: #c3c2b7; --series-1: #2a78d6;
  --shadow: 0 1px 2px rgba(11, 11, 11, 0.04), 0 2px 8px rgba(11, 11, 11, 0.04);
  --radius: 10px;
  --font: system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme="light"])) {
    color-scheme: dark;
    --page: #0d0d0d; --surface: #1a1a19; --surface-2: #232321;
    --ink: #ffffff; --ink-2: #c3c2b7; --muted: #898781;
    --border: rgba(255, 255, 255, 0.10);
    --good-ink: #0ca30c; --warning-ink: #fab219; --critical-ink: #e66767;
    --accent: #3987e5; --focus: #6da7ec;
    --grid: #2c2c2a; --axis: #383835; --series-1: #3987e5; --shadow: none;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d; --surface: #1a1a19; --surface-2: #232321;
  --ink: #ffffff; --ink-2: #c3c2b7; --muted: #898781;
  --border: rgba(255, 255, 255, 0.10);
  --good-ink: #0ca30c; --warning-ink: #fab219; --critical-ink: #e66767;
  --accent: #3987e5; --focus: #6da7ec;
  --grid: #2c2c2a; --axis: #383835; --series-1: #3987e5; --shadow: none;
}

* { box-sizing: border-box; }
html, body { margin: 0; background: var(--page); color: var(--ink); font-family: var(--font);
             font-size: 14px; line-height: 1.45; }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
[hidden] { display: none !important; }
body.loading .page { visibility: hidden; }
a { color: var(--accent); }
code, .mono { font-family: var(--mono); }

.topbar { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 14px;
          flex-wrap: wrap; padding: 10px 20px; background: var(--surface);
          border-bottom: 1px solid var(--border); }
.back { color: var(--accent); text-decoration: none; white-space: nowrap; }
.back:hover { text-decoration: underline; }
.brand { min-width: 0; flex: 1 1 18em; }
.brand h1 { font-size: 16px; font-weight: 650; margin: 0; }
.subtitle { margin: 0; color: var(--ink-2); font-size: 13px; }
.actions { display: flex; gap: 6px; margin-left: auto; align-items: center; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; border: 1px solid var(--border);
       background: var(--surface); border-radius: 8px; padding: 5px 11px; cursor: pointer;
       white-space: nowrap; text-decoration: none; color: inherit; }
.btn:hover { background: var(--surface-2); }
.btn:disabled { opacity: .55; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.small { padding: 2px 8px; font-size: 12.5px; }
.actions select { width: auto; margin-top: 0; padding: 5px 8px; }

.page { display: grid; gap: 14px; padding: 16px 20px; max-width: 1280px; margin: 0 auto; min-width: 0; }
@media (max-width: 700px) { .page { padding: 12px; } .topbar { padding: 10px 12px; position: static; } }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
        box-shadow: var(--shadow); padding: 14px 16px; min-width: 0; }
.card h2 { font-size: 15px; margin: 0 0 6px; }
.card h3 { font-size: 13.5px; margin: 14px 0 4px; color: var(--ink-2); }
.intro p { margin: 0 0 6px; }
.uses { margin: 4px 0 8px; padding-left: 18px; }
.uses li { margin: 3px 0; }
.hint { color: var(--muted); font-size: 12.5px; margin: 4px 0 0; }
.muted { color: var(--ink-2); margin: 0; }
.caution { color: var(--warning-ink); }
.notice { margin: 0; padding: 8px 12px; border-radius: 8px; border: 1px solid var(--border);
          background: var(--surface-2); }
.error-box { padding: 8px 10px; border-radius: 8px; color: var(--critical-ink);
             border: 1px solid var(--critical); }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.buttons { margin-top: 10px; }
.check { display: flex; gap: 8px; align-items: baseline; margin-top: 8px; font-weight: 600; cursor: pointer; }
.check input { transform: translateY(2px); }
select, input[type=search], textarea {
  padding: 6px 8px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); }
textarea { width: 100%; min-height: 9em; font-family: var(--mono); font-size: 12.5px; resize: vertical; }

/* The two files */
.slots { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 800px) { .slots { grid-template-columns: 1fr; } }
.slot-head { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.slot-badge { display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 50%;
              background: var(--accent); color: #fff; font-weight: 700; flex: none; }
.slot-head h2 { margin: 0; }
.drop { border: 1.5px dashed var(--axis); border-radius: 10px; padding: 14px; text-align: center;
        background: var(--surface-2); }
.drop.over { border-color: var(--accent); }
.drop p { margin: 0 0 8px; }
.link-btn { border: 0; background: none; color: var(--accent); cursor: pointer; padding: 0;
            text-decoration: underline; }
.slot-options { display: grid; gap: 8px; margin-top: 10px; }
.slot-options .row { gap: 6px; }
.slot-source { margin: 0 0 4px; font-weight: 600; overflow-wrap: anywhere; }
.slot-facts { margin: 0; color: var(--ink-2); }
.slot .version { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 8px; }
.slot .version label { font-weight: 600; font-size: 13px; }
.slot .version select { width: auto; }
.unread { margin: 6px 0 0; font-size: 12.5px; }
.unread summary { cursor: pointer; color: var(--warning-ink); }
.unread ul { margin: 4px 0 0; padding-left: 18px; max-height: 12em; overflow: auto; }
.unread code { overflow-wrap: anywhere; }
.slot-tools { display: flex; justify-content: center; margin-top: -6px; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.tabs button { border: 1px solid transparent; border-bottom: 0; background: none; padding: 8px 14px;
               border-radius: 8px 8px 0 0; cursor: pointer; color: var(--ink-2); font-weight: 600; }
.tabs button[aria-selected="true"] { background: var(--surface); border-color: var(--border); color: var(--ink);
                                      margin-bottom: -1px; }
#view-compare, #view-migrate { display: grid; gap: 14px; min-width: 0; }

/* Filters and groups */
.filters { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin: 10px 0 4px; }
.filters input[type=search] { flex: 1 1 14em; min-width: 0; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { border: 1px solid var(--border); background: var(--surface); border-radius: 99px;
        padding: 3px 10px; cursor: pointer; font-size: 13px; }
.chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }
.group { border-top: 1px solid var(--border); }
.group > summary { display: block; padding: 9px 2px 9px 1.3em; cursor: pointer; list-style: none; position: relative; }
.group > summary::-webkit-details-marker { display: none; }
.group > summary::before { content: "▸"; color: var(--muted); position: absolute; left: 2px; }
.group[open] > summary::before { content: "▾"; }
.group-name { font-weight: 650; margin-right: 12px; }
.group-counts { color: var(--ink-2); font-size: 12.5px; display: inline-block; }
.group-help { margin: 0 0 8px; }

.table-wrap { overflow-x: auto; }
.table { border-collapse: collapse; width: 100%; font-size: 13px; }
.table th, .table td { text-align: left; vertical-align: top; padding: 6px 8px;
                       border-bottom: 1px solid var(--border); }
.table th { color: var(--ink-2); font-weight: 600; white-space: nowrap; }
.params td.name { width: 44%; min-width: 14em; }
.params td.val { width: 28%; min-width: 8em; }
.params.single td.name { width: 56%; }
.params.single td.val { width: 44%; }
.pname { font-family: var(--mono); font-weight: 650; overflow-wrap: anywhere; }
.display { color: var(--ink-2); }
.desc { color: var(--muted); font-size: 12px; margin: 2px 0 0; display: -webkit-box; -webkit-line-clamp: 2;
        -webkit-box-orient: vertical; overflow: hidden; cursor: pointer; }
.desc.open { display: block; }
.vtext { font-family: var(--mono); font-weight: 600; overflow-wrap: anywhere; }
.vtext .unit { font-family: var(--font); font-weight: 400; color: var(--ink-2); margin-left: 4px; }
.vlabel { display: block; color: var(--ink-2); font-size: 12.5px; }
.none { color: var(--muted); }
tr.changed td.val.b .vtext { color: var(--accent); }
.bits { list-style: none; margin: 3px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 3px; }
.bits li { font-size: 11.5px; border: 1px solid var(--border); border-radius: 6px; padding: 0 5px;
           background: var(--surface-2); }
.bits li.added { border-color: var(--good-ink); color: var(--good-ink); font-weight: 650; }
.bits li.removed { border-color: var(--critical-ink); color: var(--critical-ink); font-weight: 650;
                   text-decoration: line-through; }
.tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 3px; }
.tag { font-size: 11.5px; color: var(--ink-2); background: var(--surface-2); border-radius: 10px;
       padding: 0 7px; display: inline-block; max-width: 100%; overflow-wrap: anywhere; }
.tag.warn { color: var(--warning-ink); }
.tag.bad { color: var(--critical-ink); }
.tag.only { color: var(--accent); }
.was { display: block; font-size: 11.5px; color: var(--muted); }

/* Chart */
.chart { margin: 10px 0 6px; max-width: 720px; }
.chart figcaption { font-size: 13px; margin-bottom: 4px; }
svg.plot { width: 100%; height: auto; display: block; overflow: visible; }
svg.plot .grid { stroke: var(--grid); stroke-width: 1; }
svg.plot .tick, svg.plot .axis-label, svg.plot .cat { fill: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
svg.plot .cat { fill: var(--ink-2); }
svg.plot .bar { fill: var(--series-1); cursor: pointer; }
svg.plot .bar:hover, svg.plot .bar.hover { filter: brightness(1.15); }
svg.plot .val { fill: var(--ink-2); font-size: 11px; font-variant-numeric: tabular-nums; }
.tooltip { position: fixed; z-index: 30; pointer-events: none; background: var(--surface);
           border: 1px solid var(--border); border-radius: 6px; padding: 3px 8px; font-size: 12.5px;
           box-shadow: var(--shadow); font-variant-numeric: tabular-nums; }

/* Outputs */
.preview { margin-top: 10px; }
.preview summary { cursor: pointer; color: var(--ink-2); }
.preview pre { max-height: 22em; overflow: auto; background: var(--surface-2); padding: 8px 10px;
               border-radius: 8px; font-size: 12px; margin: 6px 0 0; white-space: pre; }

/* Choosing what goes into the file */
input.pick { margin: 0 6px 0 0; vertical-align: -1px; }
.group-counts.picked { margin-left: 4px; }
.pick-all { margin: 6px 0; }
.pick-group h3 { font-size: 13px; margin: 12px 0 0; }
.pick-group h3 .group-counts { font-weight: 400; }
.pick-group ul { list-style: none; margin: 0; padding: 0; }
.pick-group li { border-top: 1px solid var(--border); }
.pick-group label { display: flex; flex-wrap: wrap; gap: 2px 10px; align-items: baseline; padding: 4px 0; cursor: pointer;
                    font-size: 13px; }
.pick-group label input { margin: 0; align-self: center; }
.pick-values { font-family: var(--mono); font-size: 12.5px; overflow-wrap: anywhere; }
.pick-values .arrow { color: var(--muted); }
.pick-group .display { font-size: 12.5px; }

/* Migrate */
.explain { margin: 8px 0; padding: 8px 12px; background: var(--surface-2); border-radius: 8px; }
.explain summary { cursor: pointer; font-weight: 600; }
.explain p { margin: 6px 0 0; }
.mig-form { display: grid; gap: 8px; margin-top: 10px; }
.mig .arrow { color: var(--muted); padding: 0 4px; }
.mig td.names .pname { white-space: nowrap; }
.mig td.names .arrow { padding: 0; }
.mig td.values { white-space: nowrap; }
.mig td.rule { min-width: 16em; }
.mig .note { display: block; font-size: 12px; margin-top: 3px; color: var(--warning-ink); }
.mig .note.info { color: var(--ink-2); }
.drop-list { margin: 4px 0 0; padding-left: 18px; }
.drop-list li { margin: 3px 0; }

.about { padding: 4px 20px 24px; color: var(--muted); font-size: 12.5px; max-width: 1280px; margin: 0 auto; }
.about a { color: var(--ink-2); }
@media (max-width: 700px) { .about { padding: 4px 12px 20px; } }

/* On a phone each parameter is a small card: the name across, A and B side by side. */
@media (max-width: 640px) {
  .params thead { display: none; }
  .params tr { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 10px; padding: 8px 0;
               border-bottom: 1px solid var(--border); }
  .params td { padding: 0; border: 0; min-width: 0 !important; width: auto !important; }
  .params td.name { grid-column: 1 / -1; }
  .params td.val::before { content: attr(data-side); display: block; font-size: 11px; color: var(--muted); }
  .params.single td.val::before { display: none; }
  .mig thead { display: none; }
  .mig tr { display: grid; grid-template-columns: 1fr; gap: 3px; padding: 8px 0; border-bottom: 1px solid var(--border); }
  .mig td { padding: 0; border: 0; min-width: 0 !important; }
}