/* PC workbench (lesson 11, topic 2.3 Computer Maintenance): mounted by windows/lab4.html. Everything is scoped under
   .blab, in the site's light palette, beside the ports panel's look (../ports/ports-lab.css). Drawings are SVG. */
.blab { --bl-ink: #1d1d1f; --bl-mut: #6e6e73; --bl-line: #d2d2d7; --bl-soft: #f5f5f7; --bl-blue: #0071e3; --bl-ok: #1d9e55; --bl-bad: #c4302b; --bl-warn: #bf4800;
  color: var(--bl-ink); background: #fff; border: 1px solid var(--bl-line); border-radius: 14px; padding: 16px; font: 14px/1.5 -apple-system, "Segoe UI", system-ui, Tahoma, sans-serif; }
.blab *, .blab *::before, .blab *::after { box-sizing: border-box; }
.blab .bl-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.blab .bl-head h3 { margin: 0 0 4px; font-size: 18px; font-weight: 650; }
.blab .bl-head p { margin: 0 0 12px; color: var(--bl-mut); font-size: 13px; max-width: 64ch; }
.blab .bl-state { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 12px; }
.blab .bl-chip { appearance: none; display: inline-flex; align-items: center; gap: 6px; min-height: 34px; padding: 4px 12px; border-radius: 980px; border: 1px solid var(--bl-line);
  background: #fff; color: var(--bl-ink); font: inherit; font-size: 13px; cursor: pointer; }
.blab .bl-chip:hover { background: var(--bl-soft); }
.blab .bl-chip::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: #c7c7cc; flex: none; }
.blab .bl-chip.on::before { background: var(--bl-ok); }
.blab .bl-chip.warn::before { background: var(--bl-warn); }
.blab .bl-chip:focus-visible, .blab .bl-tab:focus-visible, .blab .bl-btn:focus-visible, .blab .bl-part:focus-visible { outline: 2px solid var(--bl-blue); outline-offset: 2px; }
.blab .bl-tabs { display: flex; gap: 6px; flex-wrap: wrap; border-bottom: 1px solid var(--bl-line); margin-bottom: 14px; }
.blab .bl-tab { appearance: none; border: 0; background: none; color: var(--bl-mut); font: inherit; font-weight: 600; padding: 9px 12px 10px; min-height: 40px; cursor: pointer;
  border-bottom: 2px solid transparent; margin-bottom: -1px; }
.blab .bl-tab:hover { color: var(--bl-ink); }
.blab .bl-tab.on { color: var(--bl-ink); border-bottom-color: var(--bl-ink); }
.blab .bl-split { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 16px; align-items: start; }
.blab .bl-case { margin: 0; background: var(--bl-soft); border-radius: 12px; padding: 8px; }
.blab .bl-case svg { display: block; width: 100%; height: auto; direction: ltr; }
.blab .bl-case figcaption { font-size: 12px; color: var(--bl-mut); text-align: center; padding: 4px 0 0; }
.blab .bl-part { cursor: pointer; outline: none; }
.blab .bl-hit { fill: transparent; stroke: transparent; stroke-width: 2; }
.blab .bl-part:hover .bl-hit, .blab .bl-part:focus-visible .bl-hit { fill: rgba(0, 113, 227, .07); stroke: var(--bl-blue); }
.blab .bl-part.sel .bl-hit { fill: rgba(0, 113, 227, .1); stroke: var(--bl-blue); stroke-width: 2.5; }
.blab .bl-part.named .bl-hit { stroke: rgba(29, 158, 85, .6); }
.blab .bl-lbl { font: 600 9px/1 -apple-system, "Segoe UI", system-ui, sans-serif; fill: #d6dde6; letter-spacing: .02em; }
.blab .bl-lbl.dk { fill: #3a3a3c; }
.blab .bl-tag { font: 600 10px/1 -apple-system, "Segoe UI", system-ui, sans-serif; fill: var(--bl-ok); paint-order: stroke; stroke: #fff; stroke-width: 2.4px; }
.blab .bl-closed { fill: #dfe2e7; stroke: #c3c7ce; }
.blab .bl-spin { transform-box: fill-box; transform-origin: center; }
.blab.run .bl-spin { animation: bl-spin 1.1s linear infinite; }
@keyframes bl-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .blab.run .bl-spin { animation: none; } }
.blab .bl-side { display: flex; flex-direction: column; gap: 10px; }
.blab .bl-card { border: 1px solid var(--bl-line); border-radius: 12px; padding: 12px 14px; background: #fff; }
.blab .bl-card h4 { margin: 0 0 2px; font-size: 15px; font-weight: 650; }
.blab .bl-card .bl-sub { margin: 0 0 8px; color: var(--bl-mut); font-size: 13px; }
.blab .bl-kv { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 4px 12px; margin: 0 0 10px; font-size: 13px; }
.blab .bl-kv dt { color: var(--bl-mut); }
.blab .bl-kv dd { margin: 0; overflow-wrap: anywhere; }
.blab .bl-acts { display: flex; flex-wrap: wrap; gap: 6px; }
.blab .bl-btn { appearance: none; font: inherit; font-weight: 600; min-height: 38px; padding: 7px 14px; border-radius: 10px; border: 1px solid var(--bl-line); background: #fff;
  color: var(--bl-ink); cursor: pointer; }
.blab .bl-btn:hover { background: var(--bl-soft); }
.blab .bl-btn.pri { background: var(--bl-blue); border-color: var(--bl-blue); color: #fff; }
.blab .bl-btn.pri:hover { background: #0077ed; }
.blab .bl-btn[disabled] { opacity: .45; cursor: not-allowed; }
.blab .bl-btn.on { background: #e8e8ed; border-color: #b8b8bf; }
.blab .bl-msg { min-height: 1.5em; margin: 8px 0 0; font-size: 13px; }
.blab .bl-msg.good { color: var(--bl-ok); }
.blab .bl-msg.bad { color: var(--bl-bad); }
.blab .bl-msg.info { color: var(--bl-mut); }
.blab .bl-ask { background: var(--bl-soft); border-radius: 12px; padding: 12px; }
.blab .bl-ask q { display: block; margin-top: 4px; font-size: 15px; quotes: "“" "”"; }
.blab[dir="rtl"] .bl-ask q { quotes: "«" "»"; }
.blab .bl-shelf { display: grid; grid-template-columns: repeat(auto-fill, minmax(178px, 1fr)); gap: 10px; }
.blab .bl-shelf h5 { grid-column: 1 / -1; margin: 6px 0 0; font-size: 13px; font-weight: 650; color: var(--bl-mut); }
.blab .bl-item { display: flex; flex-direction: column; gap: 6px; border: 1px solid var(--bl-line); border-radius: 12px; padding: 10px; background: #fff; }
.blab .bl-item.pick { border-color: var(--bl-blue); box-shadow: 0 0 0 1px var(--bl-blue) inset; }
.blab .bl-item.used { opacity: .55; }
.blab .bl-item svg { display: block; width: 100%; height: 54px; direction: ltr; }
.blab .bl-item b { font-size: 13px; }
.blab .bl-item span { color: var(--bl-mut); font-size: 12px; }
.blab .bl-sort { display: flex; flex-direction: column; gap: 8px; }
.blab .bl-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; padding: 8px 0; border-top: 1px solid var(--bl-line); }
.blab .bl-row:first-child { border-top: 0; }
.blab .bl-opts { display: flex; gap: 4px; flex-wrap: wrap; }
.blab .bl-opt { appearance: none; font: inherit; font-size: 13px; min-height: 34px; padding: 4px 10px; border-radius: 980px; border: 1px solid var(--bl-line); background: #fff; cursor: pointer; }
.blab .bl-opt.ok { background: #e6f5ea; border-color: #b9e2c6; color: #1b6b37; }
.blab .bl-opt.no { background: #fdeceb; border-color: #f3c2bd; color: #a2241a; }
.blab .bl-manual { border: 1px solid var(--bl-line); border-radius: 12px; padding: 14px; background: #fffdf7; }
.blab .bl-manual h4 { margin: 0 0 8px; font-size: 15px; }
.blab .bl-manual table { width: 100%; border-collapse: collapse; font-size: 13px; }
.blab .bl-manual td { padding: 6px 4px; border-top: 1px solid #eee7d6; vertical-align: top; }
.blab .bl-manual td:first-child { color: var(--bl-mut); width: 34%; }
/* the BIOS: a dark firmware screen of its own */
.blab .bl-bios { direction: ltr; text-align: left; background: #0f1724; color: #d7e3f4; border-radius: 12px; padding: 14px; font: 13px/1.45 "Segoe UI", system-ui, sans-serif; }
.blab .bl-bios .bh { display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; border-bottom: 1px solid #2a3a52; padding-bottom: 8px; margin-bottom: 10px; color: #9fb4d0; }
.blab .bl-bios .bh b { color: #fff; font-size: 15px; }
.blab .bl-bios .bg { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px; }
.blab .bl-bios .bc { background: #16233a; border-radius: 8px; padding: 10px; }
.blab .bl-bios .bc h5 { margin: 0 0 6px; font-size: 12px; color: #7fb0ff; font-weight: 650; text-transform: none; }
.blab .bl-bios .bc div { display: flex; justify-content: space-between; gap: 8px; }
.blab .bl-bios .bc span { color: #9fb4d0; }
.blab .bl-bios .hot { color: #ff7a6b; }
.blab .bl-bios .cool { color: #6be3a0; }
.blab .bl-bios .bf { margin-top: 10px; color: #7d8fa8; font-size: 12px; }
.blab .bl-off { background: #0b0d10; color: #9aa0a6; border-radius: 12px; padding: 28px 16px; text-align: center; }
@media (max-width: 860px) {
  .blab .bl-split { grid-template-columns: 1fr; }
}
/* the 3D bench */
.blab .bl-3d-wrap { min-width: 0; }
.blab .bl-3d { position: relative; border-radius: 12px; overflow: hidden; background: #eef0f3; border: 1px solid var(--bl-line); }
.blab .bl-3d canvas { display: block; width: 100%; outline: none; touch-action: none; }
.blab .bl-3d-bar { position: absolute; left: 8px; right: 8px; top: 8px; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; pointer-events: none; }
.blab .bl-3d-bar button { pointer-events: auto; appearance: none; font: inherit; font-size: 12px; font-weight: 600; min-height: 30px; padding: 4px 10px; border-radius: 980px; border: 1px solid rgba(0,0,0,.08); background: rgba(255,255,255,.9); color: var(--bl-ink); cursor: pointer; }
.blab .bl-3d-bar button:hover { background: #fff; }
.blab .bl-3d-hand { pointer-events: auto; font-size: 12px; padding: 4px 10px; border-radius: 980px; background: rgba(0,113,227,.12); color: #0058b0; }
.blab .bl-split.has3d { grid-template-columns: 1fr; }
.blab .bl-split.has3d .bl-side { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 10px; }