/* Board & Wiring Planner. Colours are the other tools' tokens, so the
   platform reads as one. */

: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; }

* { 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 { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
[hidden] { display: none !important; }
body.loading .layout { visibility: hidden; }
a { color: var(--accent); }

.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 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.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn:disabled { opacity: .55; cursor: default; }

.layout { display: grid; grid-template-columns: minmax(300px, 380px) minmax(0, 1fr); gap: 16px;
          padding: 16px 20px; align-items: start; }
@media (max-width: 900px) { .layout { grid-template-columns: 1fr; padding: 12px; } }
.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; }
.results { display: grid; gap: 16px; min-width: 0; }
.form { position: sticky; top: 70px; max-height: calc(100vh - 86px); overflow: auto; }
@media (max-width: 900px) { .form { position: static; max-height: none; } }
fieldset { border: 0; margin: 14px 0 0; padding: 0; min-width: 0; }
legend { font-weight: 650; font-size: 14px; padding: 0; margin-bottom: 2px; }
label { display: block; font-weight: 600; font-size: 13px; padding: 0; margin-top: 8px; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 0 10px; }
.two > div { min-width: 0; }
input:not([type=checkbox]):not([type=file]), select {
  width: 100%; margin-top: 4px; padding: 6px 8px; border: 1px solid var(--border);
  border-radius: 8px; background: var(--surface); }
input[type=file] { width: 100%; margin-top: 4px; font-size: 13px; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row input[type=number] { width: 80px; flex: none; margin-top: 8px; }
.check { display: flex; gap: 8px; align-items: baseline; font-weight: 600; cursor: pointer; }
.check input { transform: translateY(2px); }
.hint { color: var(--muted); font-size: 12.5px; margin: 4px 0 0; }
.note { color: var(--good-ink); font-size: 12.5px; margin: 8px 0 0; }
.muted { color: var(--ink-2); margin: 0; }
.error-box { margin-top: 10px; padding: 8px 10px; border-radius: 8px; color: var(--critical-ink);
             border: 1px solid var(--critical); }
.invalid { border-color: var(--critical) !important; }
.mono { font-family: var(--mono); }

.board-list { display: flex; flex-direction: column; gap: 2px; margin-top: 6px; max-height: 220px;
              overflow: auto; }
.board-list:empty { display: none; }
.board-opt { display: flex; justify-content: space-between; gap: 8px; text-align: left; border: 0;
             background: transparent; border-radius: 6px; padding: 4px 8px; cursor: pointer; }
.board-opt:hover, .board-opt[aria-selected="true"] { background: var(--surface-2); }
.board-opt .opt-sub { color: var(--muted); font-size: 12px; white-space: nowrap; }
.board-opt strong { overflow-wrap: anywhere; }
.chosen { margin: 8px 0 0; font-weight: 600; }
.upload { margin-top: 10px; }
.upload summary { cursor: pointer; color: var(--accent); font-size: 13px; }

.results-head { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
                align-items: flex-start; }
.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; }
.table td.name { white-space: nowrap; font-weight: 600; }
.table select { width: auto; min-width: 9em; margin-top: 0; padding: 3px 6px; }
.table input[type=text] { width: 9em; margin-top: 0; padding: 3px 6px; }
.gloss { display: block; color: var(--ink-2); font-size: 12px; font-weight: 400; }
.tag { display: inline-block; margin: 1px 4px 1px 0; font-size: 11.5px; color: var(--ink-2);
       background: var(--surface-2); border-radius: 99px; padding: 0 7px; white-space: nowrap; }
.tag.good { color: var(--good-ink); }
.tag.bad { color: var(--critical-ink); }
.tag.warn { color: var(--warning-ink); }
.tag.fork { color: var(--accent); border: 1px solid var(--accent); background: transparent; }
.board-opt .tag { margin-left: 6px; }
.fork-note { color: var(--ink-2); }
.reboot { color: var(--muted); font-weight: 400; }
.why { color: var(--ink-2); }
.why li { margin: 2px 0; }
.plan .why ul { margin: 0; padding-left: 16px; }

.facts { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 8px 16px;
         margin: 10px 0 0; }
.facts div { min-width: 0; }
.facts dt { color: var(--ink-2); font-size: 12px; }
.facts dd { margin: 0; overflow-wrap: anywhere; }
.problems, .warnings { list-style: none; margin: 8px 0 0; padding: 0; display: grid; gap: 6px; }
.problems:empty, .warnings:empty { display: none; }
.warnings li, .problems li { padding: 7px 10px; border-radius: 8px; border: 1px solid var(--border);
                              border-left-width: 4px; }
.lvl-error { border-left-color: var(--critical) !important; }
.lvl-error .lvl { color: var(--critical-ink); }
.lvl-warn { border-left-color: var(--warning-ink) !important; }
.lvl-warn .lvl { color: var(--warning-ink); }
.lvl-info { border-left-color: var(--accent) !important; }
.lvl-info .lvl { color: var(--accent); }
.lvl { font-weight: 650; margin-right: 6px; }
.defaults { margin-top: 10px; }
.defaults summary { cursor: pointer; font-size: 13px; }

.diagram { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.diagram svg { display: block; }
.grp { font-size: 11px; }
.grp .box { fill: var(--surface-2); stroke: var(--axis); stroke-width: 1; }
.grp .box.iomcu { stroke-dasharray: 4 3; }
.grp .title { fill: var(--ink-2); font-weight: 650; }
.grp .sub { fill: var(--muted); }
.grp .out { fill: var(--surface); stroke: var(--axis); stroke-width: 1.2; cursor: default; }
.grp .out.motor { fill: var(--series-1); stroke: var(--series-1); }
.grp .out.gripper { fill: var(--good-ink); stroke: var(--good-ink); }
.grp .out.leds { fill: var(--warning-ink); stroke: var(--warning-ink); }
.grp .out.bad { stroke: var(--critical); stroke-width: 2.5; }
.grp .num { fill: var(--ink); font-weight: 650; text-anchor: middle; pointer-events: none; }
.grp .num.on { fill: #fff; }
.grp .bidir { fill: var(--good-ink); text-anchor: middle; pointer-events: none; font-weight: 650; }
.grp .gpio { fill: var(--muted); text-anchor: middle; pointer-events: none; font-size: 10px; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 14px; margin-top: 8px; font-size: 12.5px; color: var(--ink-2); }
.legend span { display: inline-flex; align-items: center; gap: 5px; }
.legend i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; border: 1px solid var(--axis); }
.legend i.motor { background: var(--series-1); border-color: var(--series-1); }
.legend i.gripper { background: var(--good-ink); border-color: var(--good-ink); }
.legend i.leds { background: var(--warning-ink); border-color: var(--warning-ink); }
.legend i.free { background: var(--surface); }
.legend b { color: var(--good-ink); }

.checklist { margin: 8px 0 0; padding-left: 22px; }
.checklist li { margin: 8px 0; }
.checklist .params-line { color: var(--ink-2); font-size: 12.5px; }
.tooltip { position: fixed; z-index: 30; pointer-events: none; background: var(--surface);
           border: 1px solid var(--border); border-radius: 6px; padding: 4px 8px; font-size: 12.5px;
           box-shadow: var(--shadow); max-width: 280px; }

.about { padding: 4px 20px 24px; color: var(--muted); font-size: 12.5px; }
.about a { color: var(--ink-2); }
@media (max-width: 900px) { .about { padding: 4px 12px 20px; } }
.actions select { width: auto; margin-top: 0; padding: 5px 8px; }

.serial { min-width: 760px; }

/* On a phone each table row is a small card. */
@media (max-width: 600px) {
  .topbar { position: static; }
  .params thead, .plan thead { display: none; }
  .params tr { display: grid; grid-template-columns: 1fr auto; gap: 2px 10px;
               padding: 8px 0; border-bottom: 1px solid var(--border); }
  .plan tr { display: grid; grid-template-columns: minmax(0, 1fr); gap: 4px;
             padding: 8px 0; border-bottom: 1px solid var(--border); }
  .params td, .plan td { padding: 0; border: 0; }
  .params td:nth-child(3) { grid-column: 1 / -1; }
  .params td.name { overflow-wrap: anywhere; white-space: normal; }
  .plan td.name { white-space: normal; }
  .plan select, .plan input[type=text] { width: 100%; }
  .two { grid-template-columns: 1fr; }
}

/* The checklist on paper: only it. */
@media print {
  .topbar, .form, .about, .card:not(.checklist-card) { display: none !important; }
  .layout { display: block; padding: 0; }
  .checklist-card { border: 0; box-shadow: none; }
  #print { display: none; }
  body { background: #fff; color: #000; }
}