/* ============================================================================
   redesign:WS4b-wb-perf — Loading & CG (#/wb), Aircraft > Empty weight & CG (#/envelope),
   Plan > Performance (#/calculator, calc-ui.js) and the E6B.
   Loaded after kit.css. TOKENS ONLY: every colour is a --c-* custom property (or a colour-mix of
   one), so Day / Dusk / Night re-colour live with no JS. Radius 0, 1px hairlines, nothing animates
   beyond 180ms ease-out, nothing flashes. Web type floor: 12px, or 11px for UPPERCASE tracked labels.
   Replaces the <style id="calc-styles"> block calc-ui.js used to inject.
   ============================================================================ */

/* ---------------------------------------------------------------- Loading & CG / Envelope */
.wbx, .pfx { max-width: 1240px; }
.wbx-grid { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 18px; margin-top: 16px; align-items: start; }
@media (max-width: 1199.98px) { .wbx-grid { grid-template-columns: minmax(0, 1fr); } }
.wbx-title { font: 600 13px/1.2 var(--font-heading); letter-spacing: .08em; text-transform: uppercase; color: var(--c-ink-2); margin: 0 0 8px; }
.wbx-title a { color: var(--c-accent-ink); text-transform: none; letter-spacing: 0; font-weight: 600; }
.wbx-note { font-size: 12px; color: var(--c-ink-3); margin-top: 10px; }
.wbx-empty { font-size: 13px; color: var(--c-ink-2); padding: 14px 0; }
.wbx-actions { margin-top: 14px; gap: 8px; }
.wbx .row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.field-hint-i { font-weight: 400; color: var(--c-ink-3); }
.wbx-sort { width: auto; min-height: 34px; padding: 4px 10px; font-size: 13px; }
.wbx-quick { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 14px; }
.wbx-quick-l { font: 600 12px/1 var(--font-heading); letter-spacing: .08em; text-transform: uppercase; color: var(--c-ink-2); margin-right: 4px; }
.wbx-ul { margin: 6px 0 0 18px; padding: 0; }

/* plots: the host is measured and the SVG drawn at its own pixel width (12px text stays 12px) */
.wbx-plots { display: grid; grid-template-columns: minmax(0, 1fr); gap: 20px; }
.wbx-plots-col { margin-top: 14px; }
@media (min-width: 1200px) { .wbx-side { position: sticky; top: calc(var(--shell-stick, 0px) + 12px); } }
.wbx-plot { min-width: 0; }
.wbx-plot-t { font: 600 13px/1.2 var(--font-heading); letter-spacing: .04em; color: var(--c-ink); margin: 0 0 4px; }
.wbp-host { width: 100%; min-height: 160px; }
.wbp { display: block; max-width: 100%; height: auto; overflow: visible; }
.wbp text { font-family: var(--font-heading); font-size: 12px; font-variant-numeric: tabular-nums; }
.wbp-empty { font-size: 13px; color: var(--c-ink-2); padding: 18px; border: 1px dashed var(--c-line-control); }
.wbp-grid { stroke: var(--c-line); stroke-width: 1; stroke-dasharray: 2 4; fill: none; }
.wbp-axis { stroke: var(--c-line-control); stroke-width: 1; fill: none; }
.wbp-env { fill: var(--c-accent-tint); stroke: var(--c-ink); stroke-width: 2; stroke-linejoin: round; }
.wbp-mtow { stroke: var(--c-blocking); stroke-width: 3; }
.wbp-ldglim { stroke: var(--c-ink-2); stroke-width: 1.5; stroke-dasharray: 6 4; }
.wbp-conn { stroke: var(--c-accent); stroke-width: 1.5; stroke-dasharray: 3 3; fill: none; }
.wbp-tick { fill: var(--c-ink-2); }
.wbp-axl { fill: var(--c-ink-2); }
.wbp-lbl { fill: var(--c-ink); font-weight: 600; paint-order: stroke; stroke: var(--c-bg); stroke-width: 3px; stroke-linejoin: round; }
.wbp-lbl-mtow { fill: var(--c-blocking); }
.wbp-lbl-ldglim { fill: var(--c-ink-2); }
.wbp-lbl.lv-caution { fill: var(--c-caution); }
.wbp-lbl.lv-blocking { fill: var(--c-blocking); }
.wbp-to { fill: var(--c-accent); stroke: var(--c-bg); stroke-width: 2; }
.wbp-ldg { fill: var(--c-bg); stroke: var(--c-accent); stroke-width: 2.5; }
.wbp-to.lv-caution { fill: var(--c-caution); }
.wbp-ldg.lv-caution { stroke: var(--c-caution); }
.wbp-to.lv-blocking { fill: var(--c-blocking); }
.wbp-ldg.lv-blocking { stroke: var(--c-blocking); }
.wbp-x { fill: none; stroke: var(--c-bg); stroke-width: 2; stroke-linecap: round; }
.wbp-ldg.lv-blocking + .wbp-x { stroke: var(--c-blocking); }

/* stations table (right column) */
.wbs-head, .wbs-row { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: 4px 12px; align-items: baseline; }
.wbs-head { font: 600 11px/1 var(--font-heading); letter-spacing: .08em; text-transform: uppercase; color: var(--c-ink-2); padding-bottom: 6px; border-bottom: 1px solid var(--c-line); }
.wbs-head span:nth-child(n+2), .wbs-v, .wbs-m { text-align: right; }
.wbs-row { padding: 8px 0; border-bottom: 1px solid var(--c-line-2); font-size: 13px; }
.wbs-n { display: block; }
.wbs-arm { display: block; font-size: 12px; color: var(--c-ink-3); }
.wbs-v { font: 600 15px/1.2 var(--font-heading); }
.wbs-m { font-size: 12px; color: var(--c-ink-2); min-width: 64px; }
.wbs-total { display: flex; justify-content: space-between; gap: 12px; margin-top: 10px; font: 600 16px/1.2 var(--font-heading); }
.wbs-total-ldg { margin-top: 4px; color: var(--c-ink-2); }

/* saved loadings */
.wbx-rows { margin-top: 10px; }
.wbx-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px 16px; align-items: start; padding: 12px 14px; margin-bottom: 10px; border: 1px solid var(--c-line); border-left: 3px solid var(--c-line); position: relative; }
.wbx-row.on { border-left-color: var(--c-accent); }
.wbx-row-main { cursor: pointer; min-width: 0; }
.wbx-row-main:hover .wbx-link { text-decoration: underline; }
.wbx-row-t { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 2px; }
.wbx-link { background: none; border: 0; padding: 0; margin: 0; font: 600 17px/1.2 var(--font-heading); color: var(--c-ink); cursor: pointer; text-align: left; }
.wbx-link:focus-visible { outline: 2px solid var(--c-accent); outline-offset: 2px; }
.wbx-row-act { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
@media (max-width: 599.98px) { .wbx-row { grid-template-columns: minmax(0, 1fr); } .wbx-row-act { justify-content: flex-start; } }

/* scenario editor: form + live result side by side; below 1000px the result is a sticky bar */
.wbx-edit { grid-template-columns: minmax(320px, 520px) minmax(0, 1fr); }
.wbx-result { position: sticky; top: calc(var(--shell-stick, 0px) + 12px); }
.wbx-livebar { display: none; }
@media (max-width: 999.98px) {
  .wbx-edit { grid-template-columns: minmax(0, 1fr); }
  .wbx-result { position: static; }
  .wbx-livebar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; position: sticky; top: var(--shell-stick, 0px); z-index: 5; margin: 12px 0 0; padding: 8px 12px; background: var(--c-bg); border: 1px solid var(--c-line); border-left: 3px solid var(--c-accent); font-size: 14px; }
}
.wbx-live-t { font-size: 14px; }
.wbx .pvkv { display: grid; grid-template-columns: minmax(120px, auto) 1fr; gap: 6px 14px; font-size: 14px; margin-top: 10px; }
.wbx .pvk { color: var(--c-ink-2); }
.wbx .pvv { font-variant-numeric: tabular-nums; }

/* Aircraft > Empty weight & CG: wider plots column, the table scrolls inside its frame */
.wbx-env { grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); }
@media (max-width: 1199.98px) { .wbx-env { grid-template-columns: minmax(0, 1fr); } }
.wbx .table .num, .wbx table .num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.wbx-editcard { margin: 16px 0; }

/* the generic config editor (wbRender in app.js: Settings, admin, set-up, #/envelope) */
.wbed-cov { display: flex; gap: 8px 12px; flex-wrap: wrap; align-items: center; margin: 4px 0 12px; font-size: 13px; color: var(--c-ink-2); }
.wbed-h { font: 600 13px/1.2 var(--font-heading); letter-spacing: .08em; text-transform: uppercase; color: var(--c-ink-2); margin: 16px 0 8px; }
#wb_box .row { display: flex; gap: 12px; flex-wrap: wrap; }
#wb_box .row > .field { flex: 1 1 140px; min-width: 120px; }
#wb_box .aw-table input, #wb_box .aw-table select { min-height: 34px; }

/* ---------------------------------------------------------------- Plan > Performance */
.pf-ac { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px 24px; }
.pf-ac-v { font-size: 15px; }
.pf-toolbar { display: flex; gap: 8px; flex-wrap: wrap; margin: 18px 0 12px; }
.pf-wx { margin-top: 10px; }
.pf-wx > div { margin: 2px 0; }
#pf_calcall_status { margin-top: 10px; }
.pfx .blueprint, .pfx .sec-head { margin-top: 16px; }
.pfx .board-head + #calc-body > .blueprint:first-child, .pfx #calc-body > .blueprint:first-child { margin-top: 16px; }

.pgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; align-items: end; }
.clab { display: flex; flex-direction: column; gap: 4px; margin: 0; font-size: 13px; font-weight: 600; color: var(--c-ink); }
.clab .sub { font-weight: 400; color: var(--c-ink-3); }
.clab input:not([type="checkbox"]), .clab select, .clab textarea { font-size: 14px; font-weight: 500; }
.clab-chk { flex-direction: row; align-items: center; justify-content: flex-start; gap: 8px; font-weight: 500; }
.clab-chk input[type="checkbox"] { flex: none; margin: 0; }
/* a field the weather / loading fetch filled in: accent edge + tint (never colour alone: the card above says so) */
.cf-autofill { background: var(--c-accent-tint); box-shadow: inset 3px 0 0 var(--c-accent); }

/* does it fit */
.fit-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 14px; margin-top: 12px; }
.fit-card { min-width: 0; }
.fit-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.fit-t { margin: 0; font: 600 13px/1.25 var(--font-heading); letter-spacing: .06em; text-transform: uppercase; color: var(--c-ink-2); }
.fit-val { font: 600 28px/1.15 var(--font-heading); margin: 6px 0 4px; font-variant-numeric: tabular-nums; }
.fit-bar { position: relative; height: 8px; margin-top: 6px; background: var(--c-line-2); }
.fit-bar > i { position: absolute; left: 0; top: 0; bottom: 0; background: var(--sev); }
.fit-bar.sev-caution > i { background: var(--c-caution); }
.fit-bar-none { background: transparent; border-top: 1px dashed var(--c-line-control); height: 1px; margin-top: 12px; }
.fit-foot { display: flex; justify-content: space-between; gap: 2px 12px; flex-wrap: wrap; font-size: 12px; color: var(--c-ink-2); margin-top: 6px; }
.fit-why { margin-top: 6px; }

/* accordion of calculators */
.perf-group { margin-bottom: 18px; }
.perf-group-title { margin: 0 0 8px; padding-bottom: 6px; font: 600 13px/1.2 var(--font-heading); letter-spacing: .08em; text-transform: uppercase; color: var(--c-ink-2); border-bottom: 1px solid var(--c-line); }
.perf-item { border: 1px solid var(--c-line); margin-bottom: 8px; background: transparent; }
.perf-item-unavail { padding: 10px 14px; border: 1px dashed var(--c-line-control); color: var(--c-ink-2); }
.perf-item-head { display: flex; align-items: center; gap: 10px; width: 100%; min-height: 44px; padding: 8px 14px; text-align: left; background: transparent; border: 0; color: var(--c-ink); cursor: pointer; font: inherit; }
.perf-item-head:hover { background: var(--c-hover-row); }
.perf-item-caret { flex: none; width: 20px; color: var(--c-accent-ink); font-size: 18px; line-height: 1; }
.perf-item-name { font: 600 16px/1.2 var(--font-heading); }
.perf-item-sec { margin-left: auto; font-size: 12px; color: var(--c-ink-3); }
.perf-item-body { display: grid; grid-template-columns: 1.1fr 1fr 1fr; gap: 18px; padding: 8px 14px 16px; border-top: 1px solid var(--c-line); }
.perf-item-body[hidden] { display: none; }
.perf-col-inputs .pgrid { grid-template-columns: 1fr; }
.perf-col-inputs { display: grid; gap: 10px; align-content: start; }
.perf-ref { font-style: italic; }
.perf-col-outputs table { width: 100%; }
@media (max-width: 860px) { .perf-item-body { grid-template-columns: 1fr; } }

/* A-Z index */
.pf-index { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 0 24px; margin-top: 8px; }
.pf-index-row { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; width: 100%; min-height: 44px; padding: 7px 0; border: 0; border-bottom: 1px solid var(--c-line-2); background: transparent; color: var(--c-ink); font: inherit; font-size: 14px; text-align: left; cursor: pointer; }
.pf-index-row:hover:not([disabled]) { color: var(--c-accent-ink); background: var(--c-hover-row); }
.pf-index-row[disabled] { color: var(--c-ink-3); cursor: default; }
.pf-index-sec { font: 600 12px/1 var(--font-heading); color: var(--c-ink-3); white-space: nowrap; }

/* E6B — the flight computer, drawn as a blueprint device (tokens only) */
.e6b-wrap { display: flex; justify-content: center; margin-top: 16px; }
.e6b-body { position: relative; width: 340px; max-width: 100%; box-sizing: border-box; padding: 16px; background: var(--c-surface); border: 1px solid var(--c-line); }
.e6b-brand { margin-bottom: 10px; text-align: center; font: 600 12px/1 var(--font-heading); letter-spacing: .16em; text-transform: uppercase; color: var(--c-ink-2); }
.e6b-lcd, .e6b-off { box-sizing: border-box; min-height: 156px; padding: 12px; border: 1px solid var(--c-line-control); background: var(--c-bg); color: var(--c-ink); }
.e6b-lcd { font: 600 14px/1.5 ui-monospace, Menlo, Consolas, monospace; font-variant-numeric: tabular-nums; white-space: pre; overflow: hidden; }
.e6b-lcd div { min-height: 21px; }
.e6b-off { display: grid; place-items: center; border-style: dashed; color: var(--c-ink-3); font: 600 12px/1 var(--font-heading); letter-spacing: .12em; text-transform: uppercase; }
.e6b-keys { margin-top: 14px; display: flex; flex-direction: column; gap: 8px; }
.e6b-krow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.e6b-key { min-height: 44px; padding: 0; border: 1px solid var(--c-line-control); background: transparent; color: var(--c-ink); font: 600 15px/1 var(--font-heading); cursor: pointer; transition: background-color var(--dur-1) var(--ease-out); }
.e6b-key:hover { background: var(--c-hover-btn); }
.e6b-key:active { background: var(--c-pressed); }
.e6b-key.fn { color: var(--c-ink-2); font-size: 12px; letter-spacing: .04em; }
.e6b-key.accent { background: var(--c-accent-solid); border-color: var(--c-accent-solid); color: var(--c-on-accent); font-size: 12px; letter-spacing: .04em; }
.e6b-key.accent:hover { background: color-mix(in srgb, var(--c-accent-solid) 88%, var(--c-ink)); }
.e6b-help { margin-top: 8px; text-align: center; }