/* OBSCURA OS: the Engineering Suite's selection, measuring and inspection.

   What eng-select.js, eng-inspect.js, eng-bodies.js, eng-viewcube.js,
   eng-nav.js and eng-analysis.js add to the page: the pick filter and the
   display in the view bar, the view cube, the Measure bubble, the Bodies
   panel, the mass properties, the View menu and the Analysis panel. Every
   size and corner is a theme.css token; the colours the view draws with
   are the --eng-* ones, which eng-view.js reads.
*/

:root {
  --eng-pick: var(--accent);
  --eng-cap: var(--warn);
}

/* ---------------------------------------------------------------- the view bar */

.eng-display { min-height: 30px; padding: 2px 6px; border: 0; border-radius: var(--radius-sm); background: transparent; color: var(--ink-soft); font-size: var(--text-2xs); cursor: pointer; }
.eng-display:hover { background: var(--paper-inset); color: var(--ink); }

/* ---------------------------------------------------------------- the view cube */

.eng-cube { position: absolute; right: 12px; bottom: 14px; display: grid; grid-template-columns: 28px 112px 28px; grid-template-rows: 28px 112px 28px auto; place-items: center; pointer-events: none; }
.eng-cube > * { pointer-events: auto; }
.eng-cube-canvas { grid-column: 2; grid-row: 2; width: 112px; height: 112px; touch-action: none; }
.eng-cube-btn { display: inline-flex; align-items: center; justify-content: center; width: 26px; height: 26px; padding: 0; border: 0; border-radius: var(--radius-sm); background: transparent; color: var(--ink-soft); cursor: pointer; }
.eng-cube-btn:hover { background: var(--paper-raised); color: var(--ink); box-shadow: 0 0 0 1px var(--rule); }
.eng-cube-btn svg { width: 16px; height: 16px; }
.eng-cube-home { grid-column: 1; grid-row: 1; }
.eng-cube-up { grid-column: 2; grid-row: 1; }
.eng-cube-left { grid-column: 1; grid-row: 2; }
.eng-cube-right { grid-column: 3; grid-row: 2; }
.eng-cube-down { grid-column: 2; grid-row: 3; }
.eng-cube-look { grid-column: 1 / -1; grid-row: 4; margin-top: 4px; min-height: 26px; padding: 2px 8px; border: 1px solid var(--rule-strong); border-radius: var(--radius-pill); background: var(--paper-raised); color: var(--ink-soft); font-size: var(--text-2xs); white-space: nowrap; cursor: pointer; }
.eng-cube-look:hover:not(:disabled) { color: var(--ink); border-color: var(--accent); }
.eng-cube-look:disabled { opacity: .45; cursor: default; }

/* ---------------------------------------------------------------- measuring */

.eng-measure-out { white-space: normal; max-width: calc(100% - 300px); border-radius: var(--radius-lg); align-items: center; }
.eng-measure-out .eng-measure-text { font: inherit; font-size: var(--text-xs); color: var(--ink-soft); }
.eng-measure-out .eng-measure-text b { font: inherit; font-weight: 600; color: var(--ink); }
.eng-measure-btn { flex: none; min-height: 28px; padding: 2px 10px; border: 1px solid var(--rule-strong); border-radius: var(--radius-pill); background: var(--paper); color: var(--ink-soft); font-size: var(--text-2xs); cursor: pointer; }
.eng-measure-btn:hover { color: var(--ink); background: var(--paper-inset); }
.eng-measure-btn[aria-pressed="true"] { background: var(--accent-soft); color: var(--accent-strong); border-color: var(--accent); }

/* ---------------------------------------------------------------- fields that pick */

.eng-pickrow { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.eng-pickrow output { font-size: var(--text-xs); color: var(--ink-soft); }
.eng-pickfield [data-picking] { background: var(--accent-soft); color: var(--accent-strong); border-color: var(--accent); }

/* ---------------------------------------------------------------- mass properties */

.eng-density { max-width: 110px; font-family: var(--font-mono); }
.eng-list-dd { text-align: right; line-height: var(--leading-ui); }
.eng-mono-dd { font-family: var(--font-mono); font-size: var(--text-2xs); }
.eng-mass { margin: 0 4px 12px; }
.eng-mass summary { padding: 6px 0; font-size: var(--text-xs); font-weight: 600; cursor: pointer; }
.eng-mass .eng-facts, .eng-mass .eng-check { margin-left: 0; margin-right: 0; }
.eng-sub { margin: 8px 0 4px; font-size: var(--text-2xs); color: var(--ink-faint); }
.eng-matrix { width: 100%; border-collapse: collapse; font-family: var(--font-mono); font-size: var(--text-2xs); font-variant-numeric: tabular-nums; }
.eng-matrix td, .eng-matrix th { padding: 3px 4px; border-bottom: 1px solid var(--rule); text-align: right; white-space: nowrap; }
.eng-matrix th { font-family: var(--font-sans); font-weight: 500; color: var(--ink-faint); }
.eng-principal td:nth-child(2) { color: var(--ink-soft); }

/* ---------------------------------------------------------------- bodies */

.eng-link { padding: 2px 4px; border: 0; background: transparent; color: var(--accent-strong); font-size: var(--text-2xs); letter-spacing: 0; text-transform: none; font-weight: 500; cursor: pointer; }
.eng-link:hover { text-decoration: underline; }
.eng-bodies { list-style: none; margin: 0; padding: 0; }
.eng-body-row { display: grid; grid-template-columns: auto auto minmax(0, 1fr) auto; align-items: center; gap: 4px; padding: 2px; border-radius: var(--radius-sm); }
.eng-body-row.eng-on { background: var(--accent-soft); }
.eng-body-row.eng-off .eng-body-name { color: var(--ink-faint); }
.eng-swatch { width: 22px; height: 22px; padding: 0; border: 1px solid var(--rule-strong); border-radius: var(--radius-sm); background: transparent; cursor: pointer; }
.eng-swatch::-webkit-color-swatch-wrapper { padding: 0; }
.eng-swatch::-webkit-color-swatch { border: 0; border-radius: var(--radius-sm); }
.eng-body-name { min-height: 28px; padding: 3px 6px; border-color: transparent; background: transparent; font-size: var(--text-xs); }
.eng-body-name:hover { border-color: var(--rule); }
.eng-body-more { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: center; gap: 4px 12px; padding: 4px 4px 6px 36px; }
.eng-body-more .eng-check { margin: 0; font-size: var(--text-xs); }
.eng-body-op { display: flex; align-items: center; gap: 6px; font-size: var(--text-xs); color: var(--ink-soft); }
.eng-body-op input { width: 90px; accent-color: var(--accent); }
.eng-body-op output { min-width: 34px; font-family: var(--font-mono); font-size: var(--text-2xs); }

/* ---------------------------------------------------------------- the View menu */

.eng-menu-view { width: 300px; }
.eng-nav-menu .eng-toggle { justify-content: flex-start; gap: 10px; }
.eng-nav-menu .eng-toggle::before { content: ""; flex: none; width: 14px; height: 14px; border: 1.5px solid var(--rule-strong); border-radius: var(--radius-sm); }
.eng-nav-menu .eng-toggle[aria-pressed="true"]::before { background: var(--accent); border-color: var(--accent); box-shadow: inset 0 0 0 2px var(--paper-raised); }
.eng-menu-h { margin: 4px 11px; font-size: var(--text-2xs); font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-faint); }
.eng-menu-note { margin: 2px 11px 6px; font-size: var(--text-xs); color: var(--ink-soft); }
.eng-views { list-style: none; margin: 0; padding: 0; }
.eng-views li { display: flex; align-items: center; }
.eng-views li button:first-child { flex: 1; min-width: 0; }
.eng-views-add { display: flex; gap: 6px; padding: 4px 6px 2px; }
.eng-views-add .eng-in { min-height: 32px; }
.eng-menu-list .eng-views-add button { width: auto; justify-content: center; }

/* ---------------------------------------------------------------- analysis */

.eng-an { margin: 0 4px 6px; border-bottom: 1px solid var(--rule); }
.eng-an:last-child { border-bottom: 0; }
.eng-an summary { padding: 8px 0; font-size: var(--text-xs); font-weight: 600; cursor: pointer; }
.eng-an[open] summary { margin-bottom: 4px; }
.eng-an .eng-field, .eng-an .eng-check { margin-left: 0; margin-right: 0; }
.eng-an .eng-numrow { align-items: flex-end; margin-bottom: 8px; }
.eng-an .eng-numrow .eng-field { margin-bottom: 0; }
.eng-an .eng-hint { margin: 4px 0 10px; }
.eng-range { width: 100%; margin: 0 0 6px; accent-color: var(--accent); }
.eng-clash { list-style: none; margin: 0 0 10px; padding: 0; }
.eng-clash-row { display: block; width: 100%; margin-bottom: 4px; padding: 6px 8px; border: 0; border-left: 3px solid var(--rule-strong); border-radius: var(--radius-sm); background: var(--paper-inset); font-size: var(--text-xs); text-align: left; cursor: pointer; }
.eng-clash-row:hover { background: var(--accent-soft); }
.eng-clash-overlap { border-left-color: var(--danger); }
.eng-clash-touch { border-left-color: var(--warn); }
.eng-clash-close { border-left-color: var(--warn); }
.eng-legend { margin: 2px 0 8px; }
.eng-legend[hidden] { display: none; }
.eng-legend-bar { display: block; height: 10px; border-radius: var(--radius-sm); box-shadow: inset 0 0 0 1px var(--rule); }
.eng-legend-ends { display: flex; justify-content: space-between; margin-top: 3px; font-size: var(--text-2xs); color: var(--ink-faint); }
.eng-legend-overhang { background: linear-gradient(90deg, var(--eng-solid) 0 40%, var(--warn) 60%, var(--danger)); }
.eng-legend-draft { background: linear-gradient(90deg, var(--danger) 0 33%, var(--warn) 33% 66%, var(--good) 66%); }
.eng-legend-curvature { background: linear-gradient(90deg, var(--accent), var(--eng-solid) 50%, var(--danger)); }
.eng-legend-wall { background: linear-gradient(90deg, var(--danger) 0 25%, var(--warn) 50%, var(--good) 75%, var(--eng-solid)); }

/* ---------------------------------------------------------------- stress (eng-stress.js) */

.eng-st-facts { margin: 0 0 6px; }
.eng-st-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(96px, 1fr)); gap: 0 8px; }
.eng-st-grid .eng-field { margin: 0 0 8px; min-width: 0; }
.eng-st-num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.eng-st-list { list-style: none; margin: 0 0 6px; padding: 0; }
.eng-st-list > li { border-bottom: 1px solid var(--rule); }
.eng-st-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: 36px; font-size: var(--text-xs); }
.eng-st-load { padding-bottom: 2px; }
.eng-st-x { display: inline-flex; align-items: center; justify-content: center; width: 30px; min-height: 30px; padding: 0; border-color: transparent; background: transparent; color: var(--ink-soft); }
.eng-st-x svg { width: 15px; height: 15px; }
.eng-st-x:hover { color: var(--danger); }
.eng-st-acts { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 8px; }
.eng-st-acts .eng-btn { flex: 1 1 auto; }
.eng-st-run { margin-top: 8px; }
.eng-st-run select.eng-in { font-family: var(--font-sans); }
@media (max-width: 760px), (pointer: coarse) {
  .eng-st-x { width: 44px; min-height: 44px; }
}
.eng-btn.eng-st-go { background: var(--accent); border-color: var(--accent); color: var(--on-accent); font-weight: 600; }
.eng-btn.eng-st-go:hover:not(:disabled) { background: var(--accent-strong); border-color: var(--accent-strong); }
.eng-st-prog { display: flex; flex-direction: column; gap: 4px; margin: 0 0 10px; font-size: var(--text-2xs); color: var(--ink-soft); font-variant-numeric: tabular-nums; }
.eng-st-prog[hidden] { display: none; }
.eng-st-prog progress { width: 100%; height: 6px; accent-color: var(--accent); }
.eng-st-out { margin-top: 6px; }
.eng-st-out .eng-facts { margin: 0 0 8px; }
.eng-st-legend { display: grid; grid-template-columns: repeat(8, 1fr); height: 10px; border-radius: var(--radius-sm); overflow: hidden; box-shadow: inset 0 0 0 1px var(--rule); }
.eng-st-fos.eng-st-good b { color: var(--good); }
.eng-st-fos.eng-st-warn b { color: var(--warn); }
.eng-st-fos.eng-st-bad b { color: var(--danger); }
.eng-hint.eng-st-err { color: var(--danger); }

/* ---------------------------------------------------------------- narrower */

@media (max-width: 760px) {
  /* On a phone the cube alone, small: the view bar has Iso, and the
     arrows would cover half the view. */
  .eng-cube { right: 6px; bottom: 6px; grid-template-columns: 84px; grid-template-rows: 84px auto; }
  .eng-cube-canvas { grid-column: 1; grid-row: 1; width: 84px; height: 84px; }
  .eng-cube-btn { display: none; }
  .eng-cube-look { grid-row: 2; min-height: 44px; }
  .eng-measure-out { max-width: calc(100% - 20px); top: 64px; bottom: auto; }
  .eng-display { min-height: 44px; }
  .eng-swatch { width: 44px; height: 44px; }
  .eng-body-name { min-height: 44px; }
  .eng-menu-view { width: auto; }
}
@media (pointer: coarse) {
  .eng-measure-btn, .eng-link { min-height: 44px; }
}