/* ============================================================================
   Investigation view (Odoo #14003 Structured RCA Record, #14004 Measures).
   Ported from the placement prototype (PNzhrmyDdfrGT8zCgFFKpS, Knowledge 1655) and
   the RCA prototype (YNXamq1hMLtjkdfRt8CWK6, Knowledge 1555). Semantic tokens only,
   so both themes follow. Bump ?v= in index.html whenever this file changes.
   ============================================================================ */

@layer components {

    /* ---- Evidence / Investigation views ---------------------------------- */

    /* A view is a flex column with the page's own 1rem gap, so the cards inside keep the spacing
       they had as direct children of .incident-content. */
    .view-panel {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        min-width: 0;
        max-width: 100%;
    }

    .view-panel[hidden] {
        display: none;
    }

    .view-panel:focus {
        outline: none;
    }

    .view-panel > .content-card {
        margin-top: 0;
    }

    .view-panel [id] {
        scroll-margin-top: calc(var(--header-h, 72px) + 120px);
    }

    .view-bar {
        position: sticky;
        top: var(--header-h);
        z-index: 6;
        display: flex;
        align-items: center;
        gap: 8px;
        min-width: 0;
        border-bottom: 1px solid var(--border-default);
        background: var(--surface-page);
    }

    .view-tabs {
        display: flex;
        flex: 1;
        gap: 2px;
        min-width: 0;
    }

    .view-tabs button {
        all: unset;
        box-sizing: border-box;
        display: inline-flex;
        align-items: center;
        gap: 6px;
        min-height: 44px;
        margin-bottom: -1px;
        padding: 0 18px;
        border-bottom: 3px solid transparent;
        color: var(--text-muted);
        font: 600 14px/1 var(--font-sans);
        cursor: pointer;
    }

    .view-tabs button:hover {
        color: var(--text-strong);
    }

    .view-tabs button[aria-selected="true"] {
        border-bottom-color: var(--color-primary);
        color: var(--text-strong);
    }

    .view-tabs button:focus-visible {
        outline: 2px solid var(--focus-ring);
        outline-offset: -2px;
        border-radius: 6px;
    }

    .tab-state {
        color: var(--text-muted);
        font-size: 13px;
        font-weight: 400;
    }

    .view-tabs button[aria-selected="true"] .tab-state {
        color: var(--text-body);
    }

    /* Investigation keeps the header row only, so the record starts on the first screen; the
       details grid and description live in the Evidence view. */
    .incident-content.view-investigation #details .details-more,
    .incident-content.view-investigation #details .details-disclosure {
        display: none;
    }

    /* In the sticky tab bar, right of the tabs: a quiet pill that stays in view while Evidence scrolls. */
    .back-pill {
        display: inline-flex;
        flex: none;
        align-items: center;
        gap: 6px;
        height: 28px;
        padding: 0 11px 0 9px;
        border: 1px solid color-mix(in srgb, var(--color-primary) 45%, transparent);
        border-radius: 999px;
        background: var(--color-primary-soft);
        color: var(--text-strong);
        font: 600 12px/1 var(--font-sans);
        cursor: pointer;
    }

    .back-pill i {
        color: var(--color-primary);
        font-size: 11px;
    }

    .back-pill:hover {
        border-color: var(--color-primary);
        background: color-mix(in srgb, var(--color-primary) 20%, transparent);
    }

    .view-history { display: none; flex: none; margin-left: auto; }

    .back-pill:focus-visible {
        outline: 2px solid var(--focus-ring);
        outline-offset: 2px;
    }
}

@layer responsive {
    @media (prefers-reduced-motion: no-preference) {
    }

    /* Touch screens have no hover: the Cite on a VHF call is always shown. */
    @media (hover: none) {
        .vhf-cite { opacity: 1; }
    }

    /* The rail hides under 1024 px; History moves into the tab bar. */
    @media (max-width: 1023px) {
        .view-history { display: inline-flex; }
    }

    /* Phone: the tabs become a two-segment control with 44 px segments. */
    @media (max-width: 767px) {
        .view-bar {
            flex-wrap: wrap;
            border-bottom: 0;
        }

        .view-tabs {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 3px;
            padding: 3px;
            border: 1px solid var(--input-border);
            border-radius: var(--radius-button);
            background: var(--surface-card);
        }

        .view-tabs button {
            justify-content: center;
            flex-wrap: wrap;
            min-width: 0;
            min-height: 44px;
            margin: 0;
            padding: 0 8px;
            border: 0;
            border-radius: 6px;
            line-height: 1.15;
            text-align: center;
        }

        .view-tabs button[aria-selected="true"] {
            background: var(--color-primary-soft);
            box-shadow: inset 0 0 0 1px var(--color-primary);
        }

        .tab-state {
            white-space: normal;
        }

        .back-pill {
            min-height: 44px;
        }

        .incident-content.view-investigation #details .details-facts {
            display: none;
        }
    }
}

/* ---- Root cause analysis record (RCA prototype v12, Knowledge 1555) ---------------------------------
   The prototype's private --rca-* tokens map onto the shared ones since the contrast fix: muted text is
   --text-muted, borders are --input-border, status text uses the --status-*-text tokens. */

@layer tokens {
    :root {
        --status-info-text: #5BA8E0;
    }

    html[data-theme="light"] {
        --status-info-text: #1F63A3; /* --status-info is 4.3:1 as text on white */
    }
}

@layer components {
    .sr {
        position: absolute;
        width: 1px;
        height: 1px;
        overflow: hidden;
        clip: rect(0 0 0 0);
        white-space: nowrap;
    }

    .details-grid.rca-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 0 0 4px; padding: 0 0 14px; border-top: 0; border-bottom: 1px solid var(--border-subtle); }
    .rca-grid .details-cell dt { color: var(--text-muted); }
    .rca-grid .details-cell dd { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; font-weight: 400; }
    .rca-ms .details-cell dd { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-weight: 500; }
    .rca-grid .details-cell dd small { flex-basis: 100%; font-family: var(--font-sans); }
    .rca-block .rca-grid { padding: 0; border-bottom: 0; }

    .rca-block { display: grid; grid-template-columns: minmax(0, 1fr); gap: 10px; min-width: 0; padding-block: 14px; border-bottom: 1px solid var(--border-subtle); }
    .rca-block:last-child { padding-bottom: 0; border-bottom: 0; }
    .rca-block:focus { outline: none; }
    .rca-block-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; min-height: 28px; }
    .rca-h { margin: 0; color: var(--text-muted); font-family: var(--font-mono); font-size: 10.5px; font-weight: 500; letter-spacing: .1em; text-transform: uppercase; }
    .rca-actions { display: flex; align-items: center; gap: 6px; margin-left: auto; }
    .rca-text { max-width: 78ch; margin: 0; color: var(--text-body); font-size: 14px; white-space: pre-wrap; overflow-wrap: anywhere; }
    .rca-text.is-empty { color: var(--text-muted); }
    .rca-list { display: grid; grid-template-columns: minmax(0, 1fr); gap: 10px; min-width: 0; }

    .rca-cause { display: grid; grid-template-columns: minmax(0, 1fr); gap: 8px; min-width: 0; padding: 12px 14px; border: 1px solid var(--border-subtle); border-radius: 10px; background: var(--surface-raised); }
    .rca-cause:focus { outline: 2px solid var(--focus-ring); outline-offset: 2px; }
    .rca-cause-top { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; min-width: 0; }
    .rca-cause-top > * { min-width: 0; }
    .rca-cause-top strong { min-width: 0; color: var(--text-strong); font-size: 14px; overflow-wrap: anywhere; }
    .cause-id { height: 22px; font-family: var(--font-mono); }
    .rca-evidence { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
    /* Link chips ("Direct cause: …", "From Why n") carry free text: they wrap instead of widening a phone page. */
    .rca-evidence > .chip:not(.evidence-chip) { max-width: 100%; height: auto; min-height: 26px; white-space: normal; text-align: left; }

    .chip.evidence-chip { min-width: 0; max-width: 100%; height: 26px; overflow: hidden; border-color: var(--input-border); background: var(--surface-card); color: var(--text-body); letter-spacing: .04em; }
    button.chip.evidence-chip { cursor: pointer; }
    button.chip.evidence-chip:hover { border-color: var(--color-primary); color: var(--text-strong); }
    .chip.evidence-chip .ek { flex: none; font-weight: 600; }
    .chip.evidence-chip .el { min-width: 0; overflow: hidden; color: var(--text-muted); font-family: var(--font-sans); letter-spacing: 0; text-overflow: ellipsis; white-space: nowrap; }
    .chip.evidence-chip.is-removed { border-style: dashed; color: var(--text-muted); }
    .evwrap { display: inline-flex; align-items: center; gap: 2px; max-width: 100%; }

    .chip.state-draft { border-style: dashed; border-color: var(--input-border); color: var(--text-body); }
    .chip.state-review { border-color: var(--status-info); background: var(--status-info-bg); color: var(--status-info-text); }
    .chip.state-signed { border-color: var(--color-primary); background: var(--color-primary-soft); color: var(--text-strong); }

    .rca-gap { display: flex; align-items: center; gap: 6px; margin: 0; color: var(--status-bad-text); font-size: 12px; font-weight: 600; }
    .rca-docs { display: grid; gap: 8px; }
    .rca-note { display: flex; gap: 8px; align-items: center; margin: 0; color: var(--text-strong); font-weight: 600; }
    .rca-note i { color: var(--status-warn); }
    .rca-light-kept { margin-top: 12px; }
    .rca-light-kept > .collapse-head { gap: 10px; }
    .rca-light-note { display: grid; gap: 10px; padding: 0 14px 14px; }
    .rca-divider { margin: 6px 0 0; border: 0; border-top: 3px double var(--input-border); }
    .rca-block.rca-addenda { border-bottom: 0; }
    .rca-addendum { display: grid; gap: 6px; padding: 12px 14px; border: 1px solid var(--border-subtle); border-radius: 10px; background: var(--surface-sunken); }
    .rca-addendum .tp { color: var(--text-muted); font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; }
    .rca-addendum .rca-text { margin: 0; }
    .rca-addendum .by { color: var(--text-muted); font-size: 12px; }
    .rca-addendum-form { margin-top: 1rem; }
    .rca-stmt-drop { display: grid; justify-items: center; gap: 4px; cursor: pointer; padding: .8rem; }
    .rca-form label.rca-stmt-drop > span:first-child { color: var(--text); font-family: var(--font-sans); font-size: 13px; font-weight: 400; letter-spacing: normal; text-transform: none; }
    .rca-stmt-drop:focus-within { outline: 2px solid var(--focus-ring); outline-offset: 2px; }
    /* One statement per row: the role, name and file are the point, not a thumbnail grid. */
    #statements .docs-body { grid-template-columns: minmax(0, 1fr); }
    .stmt-notes summary { cursor: pointer; color: var(--text-muted); font-size: 13px; }
    .stmt-notes .rca-text { margin: 4px 0 0; white-space: pre-wrap; }
    .rca-doc-pick { display: grid; gap: 8px; padding: 10px; border: 1px dashed var(--input-border); border-radius: 10px; }

    .rca-open-items { display: grid; gap: 6px; margin: 0 0 12px; padding: 10px 14px; border: 1px solid var(--status-warn); border-radius: 10px; background: var(--status-warn-bg); }
    .rca-open-title { display: flex; align-items: center; gap: 8px; margin: 0; color: var(--status-warn-text); font-size: 13px; font-weight: 600; }
    .rca-open-items ul { display: grid; gap: 2px; margin: 0; padding-left: 22px; color: var(--status-warn-text); font-size: 13px; }
    .rca-open-items button { all: unset; color: var(--text-strong); cursor: pointer; text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--text-muted) 60%, transparent); text-underline-offset: 3px; }
    .rca-open-items button:hover { color: var(--color-primary); }
    .rca-open-items button:focus-visible { border-radius: 3px; outline: 2px solid var(--focus-ring); outline-offset: 2px; }
    @keyframes rca-attention {
        0%, 100% { box-shadow: 0 0 0 0 transparent; }
        50% { box-shadow: 0 0 0 4px color-mix(in srgb, var(--status-warn) 45%, transparent); }
    }

    .rca-hist-who { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 8px; }
    .rca-hist-when { font-family: var(--font-mono); font-size: 12px; color: var(--text-muted); white-space: nowrap; }
    .rca-hist-change { white-space: normal; overflow-wrap: anywhere; }
    .rca-hist-grid td { vertical-align: top; }
    /* The row toggle: a plain chevron, no button frame (Radzen's own button styles are unlayered). */
    .rca-hist-grid .rz-col-icon .rz-button { width: 28px; height: 28px; min-width: 28px; padding: 0; border: 0 !important; background: transparent !important; box-shadow: none !important; color: var(--text-muted); }
    .rca-hist-grid .rz-col-icon .rz-button:hover,
    .rca-hist-grid .rz-col-icon .rz-button:focus-visible { background: var(--color-primary-soft) !important; color: var(--color-primary); }
    .rca-hist-grid .rz-row-toggler { display: inline-grid; place-items: center; width: 100%; height: 100%; font-size: 0; }
    .rca-hist-grid .rz-row-toggler::before { content: ""; width: 7px; height: 7px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(-45deg); transition: transform .15s ease; }
    .rca-hist-grid .rz-button[aria-expanded="true"] .rz-row-toggler::before { transform: rotate(45deg); }
    .rca-diff { width: 100%; margin: 2px 0 6px; border-collapse: collapse; font-size: 12.5px; }
    .rca-diff th, .rca-diff td { padding: 6px 10px; border-bottom: 1px solid var(--border-subtle); background: transparent; text-align: left; vertical-align: top; white-space: pre-wrap; overflow-wrap: anywhere; text-transform: none; letter-spacing: 0; }
    .rca-diff thead th { border-bottom-color: var(--border-default); color: var(--text-muted); font: 600 10.5px var(--font-mono); letter-spacing: .08em; text-transform: uppercase; }
    .rca-diff tbody th { width: 24%; color: var(--text-muted); font-weight: 600; }
    .rca-diff tbody tr:last-child > * { border-bottom: 0; }
    .rca-diff td.is-was { color: var(--text-muted); text-decoration: line-through; text-decoration-color: color-mix(in srgb, var(--text-muted) 55%, transparent); }
    .rca-diff td.is-now { color: var(--text-strong); }

    /* ---- Cite as evidence (draft 2): the dialog and the actions on the evidence ---- */
    .cite-form { display: grid; gap: 14px; }
    .cite-item { display: flex; min-width: 0; }
    /* Long lists scroll inside the dialog instead of making it taller than the screen. */
    .cite-targets { display: grid; gap: 4px; max-height: min(360px, 50vh); overflow-y: auto; padding: 2px; }
    .cite-targets .rca-h { margin: 14px 0 6px; }
    .cite-targets .rca-h:first-child { margin-top: 4px; }
    .cite-target { all: unset; box-sizing: border-box; display: grid; grid-template-columns: 2.4rem minmax(0, 1fr) auto; gap: 8px; align-items: start; padding: 10px 12px; border: 1px solid transparent; border-radius: 8px; color: var(--text-body); cursor: pointer; }
    .cite-target:hover { background: color-mix(in srgb, var(--color-primary) 8%, transparent); }
    .cite-target.is-selected { border-color: var(--color-primary); background: var(--color-primary-soft); color: var(--text-strong); }
    .cite-target:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 1px; }
    .cite-target:disabled { opacity: .6; cursor: default; }
    .cite-target .mono { color: var(--text-muted); font: 600 12px/1.5 var(--font-mono); }
    .cite-target-label { overflow-wrap: anywhere; }
    .cite-new { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
    .vhf-transcript-row { display: contents; }
    .vhf-transcript-row.can-cite { position: relative; display: block; }
    .vhf-transcript-row.can-cite > .vhf-transcript-item { padding-right: 5.5rem; }
    .vhf-cite { position: absolute; top: .5rem; right: .5rem; min-height: 26px; padding: 0 9px; font-size: 12px; opacity: 0; transition: opacity .15s ease; }
    .vhf-transcript-row:hover .vhf-cite,
    .vhf-transcript-row:focus-within .vhf-cite { opacity: 1; }
    .marker-actions { position: absolute; bottom: calc(100% + 6px); left: 50%; z-index: 11; display: inline-flex; gap: 4px; transform: translateX(-50%); }
    .marker-actions .marker-open { position: static; transform: none; }
    .telemetry-cite { margin-left: auto; align-self: center; }
    .telemetry-card-tools { display: inline-flex; align-items: center; gap: 8px; }
    .telemetry-card-tools .telemetry-cite { margin-left: 0; }

    .rca-form { display: grid; gap: 1rem; }
    .rca-form .rca-evrow { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
    .rca-form .field { display: grid; gap: 4px; }
    .rca-form .field-label,
    .rca-form label > span:first-child { color: var(--text-muted); font-family: var(--font-mono); font-size: 11px; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; }
    .dialog-actions .grow { flex: 1; }

    .rca-picker { display: grid; gap: 12px; min-width: 0; }
    .rca-picker-filters { display: flex; flex-wrap: wrap; gap: 6px; }
    .rca-picker-list { position: relative; display: flex; flex-direction: column; gap: 4px; max-height: min(50vh, 400px); margin: 0 -6px; padding: 0 6px; overflow: auto; }
    .rca-picker-list > * { flex: none; min-height: 0; }
    .rca-prow { display: grid; grid-template-columns: auto 20px minmax(0, 1fr) auto; align-items: center; gap: 10px; min-height: 44px; padding: 7px 8px; border: 1px solid transparent; border-radius: 8px; }
    .rca-prow:hover { background: var(--surface-hover); }
    .rca-prow.is-hit { align-items: start; padding-bottom: 10px; }
    .rca-prow input { width: 18px; height: 18px; accent-color: var(--color-primary); }
    .rca-prow i.fas { color: var(--text-muted); }
    .rca-prow .meta { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px; min-width: 0; cursor: pointer; }
    .rca-prow .meta > span { margin: 0; color: var(--text-body); font-family: var(--font-sans); font-size: 13px; font-weight: 400; letter-spacing: normal; text-transform: none; }
    .rca-prow .meta .k { color: var(--text-strong); font-weight: 600; }
    .rca-prow .meta .t { color: var(--text-muted); font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
    .rca-prow .meta .o { padding: 0 6px; border: 1px dashed var(--input-border); border-radius: 999px; color: var(--text-muted); font-size: 11px; }
    .rca-prow .meta .rca-line { flex-basis: 100%; white-space: pre-wrap; }
    .rca-prow mark { padding: 0 2px; border-radius: 3px; background: color-mix(in srgb, var(--color-primary) 30%, transparent); color: inherit; }
    .rca-hits-h { display: flex; align-items: center; gap: 6px; margin: 10px 0 2px; }

    .rca-preview { display: flex; flex-direction: column; gap: 10px; min-width: 0; margin: 6px 0 8px 38px; padding: 10px; border: 1px solid var(--border-subtle); border-radius: 10px; background: var(--surface-sunken); }
    .rca-preview > * { flex: none; min-width: 0; }
    .rca-preview video { width: 100%; max-height: 260px; border-radius: 8px; background: #000; }
    .rca-preview audio { width: 100%; }
    .rca-pv-stream { display: flex; flex-direction: column; gap: 6px; max-height: 170px; overflow: auto; }
    .rca-pv-stream .vhf-transcript-item { display: grid; flex: none; grid-template-columns: auto auto minmax(0, 1fr); align-items: baseline; gap: .2rem .75rem; width: 100%; padding: .5rem .65rem; transform: none; }
    .rca-pv-stream .vhf-transcript-message { grid-column: 1 / -1; min-width: 0; overflow-wrap: anywhere; white-space: pre-wrap; }
    .rca-pv-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
    .rca-pv-time { min-width: 7ch; color: var(--text-strong); font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
}

@layer responsive {
    @media (max-width: 640px) {
        .details-grid.rca-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
        .rca-grid .details-cell dd { overflow-wrap: anywhere; }
        #rca .section-head { justify-content: flex-start; }
        .rca-actions { flex-wrap: wrap; justify-content: flex-end; }
        button.chip.evidence-chip { height: 44px; }
        button.chip.evidence-chip .el { display: none; }
        .rca-evidence .ghost,
        .rca-block-head .ghost,
        .rca-actions .ghost,
        .rca-form .ghost { min-height: 44px; }
        .rca-actions .iconbtn,
        .rca-cause-top .iconbtn,
        .evwrap .iconbtn,
        .rca-prow .iconbtn { width: 44px; height: 44px; }
        .rca-picker-filters { flex-wrap: nowrap; padding-bottom: 4px; overflow-x: auto; }
        .rca-picker-filters .type-chip { flex: none; min-height: 44px; }
        .rca-picker-list { max-height: none; overflow: visible; }
        .rca-preview { margin-left: 0; }
    }
}

/* ---- Measures (placement prototype v4, Knowledge 1655) -----------------------------------------------
   Status chips, the measure table (6 columns from 1280 px, two-line cards below, stacked under 768 px),
   the status and row menus, the closure gate block and the events list column. */

@layer components {
    .chip.ms { gap: 6px; height: 24px; padding: 0 9px; border-width: 1px; border-style: solid; background: transparent; font-size: 12px; font-weight: 500; letter-spacing: .02em; }
    .chip.ms i { font-size: 11px; }
    .chip.ms-planned { border-style: dashed; border-color: var(--input-border); color: var(--text-body); }
    .chip.ms-inprogress { border-color: var(--status-info); background: var(--status-info-bg); color: var(--status-info-text); }
    .chip.ms-done { border-color: var(--color-primary); background: var(--color-primary-soft); color: var(--text-strong); }
    .chip.ms-cancelled { border-style: dashed; border-color: var(--input-border); color: var(--text-muted); }
    .chip.ms-risk { border-color: var(--status-warn); background: var(--status-warn-bg); color: var(--status-warn-text); }
    /* Red since the timeline strip (pick A): amber there means due within a week. */
    .chip.ms-overdue { border-color: var(--status-bad); background: var(--status-bad-bg); color: var(--status-bad-text); }
    .chip.ms-type { height: 22px; border-color: var(--border-default); color: var(--text-muted); font-size: 11.5px; }
    button.chip.ms-mchip,
    button.chip.ms-cause,
    button.chip.ms-btn { cursor: pointer; }
    button.chip.ms-mchip:hover,
    button.chip.ms-cause:hover,
    button.chip.ms-btn:hover { border-color: var(--color-primary); color: var(--text-strong); }
    .chip.ms-cause { gap: 5px; height: 22px; padding: 0 8px; border-color: var(--input-border); color: var(--text-body); font-family: var(--font-mono); }
    .chip.ms-cause.is-add { border-style: dashed; }
    .chip.ms-cause.is-add i { font-size: 9px; }
    button.chip.ms-btn { padding-right: 7px; }
    button.chip.ms-btn .ms-dd { margin-left: 2px; font-size: 9px; opacity: .85; }

    .ms-gapline { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; margin: 0 0 12px; color: var(--status-warn-text); font-size: 12.5px; font-weight: 600; }
    .ms-gapline .lbl { display: inline-flex; align-items: center; gap: 6px; }
    .ms-gapline .chips { display: flex; flex-wrap: wrap; gap: 6px; }
    .rca-measures { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; padding-top: 8px; border-top: 1px solid var(--border-subtle); }
    .rca-measures .none { display: inline-flex; align-items: center; gap: 6px; color: var(--status-warn-text); font-size: 12px; font-weight: 600; }
    .rca-measures .actions { margin-left: auto; }
    .rca-measures .ghost { padding: 3px 10px; }

    .mtable { display: grid; min-width: 0; }
    .mhdr,
    .mrow { display: grid; grid-template-columns: 48px minmax(0, 4fr) 96px minmax(0, 1.3fr) 150px 128px; align-items: start; column-gap: 14px; min-width: 0; padding: 12px 6px; }
    .mhdr { padding-block: 8px; border-bottom: 1px solid var(--border-default); color: var(--text-muted); font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; }
    .mlist { display: grid; margin: 0; padding: 0; list-style: none; }
    .mrow { position: relative; border-bottom: 1px solid var(--border-subtle); }
    .mrow:focus { outline: none; }
    .mrow:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: -2px; }
    .mc { display: grid; align-content: start; gap: 4px; min-width: 0; font-size: 13px; }
    .mc small { color: var(--text-muted); font-size: 12px; }
    .mc .num { font-variant-numeric: tabular-nums; }
    .mc-id { display: flex; align-items: center; gap: 2px; min-height: 26px; color: var(--text-strong); font-family: var(--font-mono); font-size: 13px; font-weight: 600; }
    .mc-id .iconbtn { width: 22px; height: 22px; }
    .mtext { margin: 0; color: var(--text-strong); font-size: 14px; line-height: 1.4; overflow-wrap: anywhere; }
    .msub { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
    .mc-meta { display: contents; }
    .mc-plan .num,
    .mc-plan small { white-space: nowrap; }
    .mc-stat { justify-items: start; }
    .mc-stat .chip { max-width: 100%; }
    .mc-act { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 6px; }
    .mc-trk a,
    .mc-trk .tk { display: inline-flex; align-items: center; gap: 6px; min-width: 0; max-width: 100%; color: var(--text-link); font-family: var(--font-mono); font-size: 12.5px; overflow-wrap: anywhere; }
    .mc-trk a:hover { text-decoration: underline; }
    .mc-trk .tk-none { color: var(--text-muted); }
    .mc-trk .tk.tk-ref { color: var(--text-body); }
    .mc-trk i { flex: none; font-size: 11px; }
    .mdetail { display: grid; grid-column: 2 / -1; gap: 10px; min-width: 0; margin-top: 4px; padding: 10px 12px; border: 1px solid var(--border-subtle); border-radius: 10px; background: var(--surface-sunken); }
    .mdetail dl { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px 16px; margin: 0; }
    .mdetail dt { color: var(--text-muted); font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; }
    .mdetail dd { margin: 2px 0 0; color: var(--text-body); font-size: 13px; overflow-wrap: anywhere; }
    .mrow.is-cancelled .mtext { color: var(--text-muted); text-decoration: line-through; text-decoration-thickness: 1px; }
    .mreason { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px; margin: 0; color: var(--text-muted); font-size: 12.5px; }
    .mreason .rca-h { margin: 0; }
    .pl-ic { display: none; margin-right: 5px; color: var(--text-muted); }

    .mrow-menu,
    .smenu-wrap { position: relative; display: inline-block; max-width: 100%; }
    .mmenu { position: absolute; top: calc(100% + 4px); right: 0; z-index: 30; display: grid; min-width: 190px; padding: 4px; border: 1px solid var(--border-default); border-radius: 10px; background: var(--surface-raised); box-shadow: var(--shadow-overlay); }
    .mmenu.smenu { left: 0; right: auto; z-index: 40; min-width: 200px; }
    .mmenu button[role=menuitem] { all: unset; box-sizing: border-box; display: flex; align-items: center; gap: 8px; min-height: 36px; padding: 0 10px; border-radius: 7px; color: var(--text-body); font-size: 13px; cursor: pointer; }
    .mmenu button[role=menuitem]:hover,
    .mmenu button[role=menuitem]:focus-visible { background: var(--surface-hover); color: var(--text-strong); }
    .mmenu button[role=menuitem]:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: -2px; }
    .mmenu button[role=menuitem] i { width: 14px; color: var(--text-muted); }
    .mmenu hr { margin: 4px 0; border: 0; border-top: 1px solid var(--border-subtle); }
    /* An invisible layer under an open menu: a click anywhere else closes it. */
    .mmenu-backdrop { all: unset; position: fixed; inset: 0; z-index: 29; }

    .ms-risk-line { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 0 0 12px; }
    .ms-risk-line button.mlink { all: unset; display: inline-flex; align-items: center; gap: 6px; min-height: 26px; color: var(--text-link); font-size: 13px; cursor: pointer; }
    .ms-risk-line button.mlink:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; border-radius: 4px; }
    .ms-risk-reason { margin: 0 0 12px; padding: 10px 12px; border: 1px solid var(--border-subtle); border-radius: 10px; background: var(--surface-sunken); font-size: 13px; white-space: pre-wrap; }

    /* The plan strip (RCA feedback round 2, pick A). The container query below picks the wide or narrow track. */
    .mplan { --mplan-bg: color-mix(in srgb, var(--surface-sunken) 35%, var(--surface-card)); container: mplan / inline-size; display: grid; gap: 10px; margin: 0 0 14px; padding: 12px 14px 6px; border: 1px solid var(--border-subtle); border-radius: 10px; background: var(--mplan-bg); }
    .mplan-head { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; font-size: 13px; }
    .mplan-k { color: var(--text-muted); }
    .mplan-next { color: var(--text-strong); font-size: 14px; font-weight: 600; }
    .mplan-late { display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: 999px; background: var(--status-bad-bg); color: var(--status-bad-text); font-weight: 600; }
    .mplan-legend { display: flex; flex-wrap: wrap; gap: 4px 14px; margin-left: auto; color: var(--text-muted); font-size: 12px; }
    .mplan-legend > span { display: inline-flex; align-items: center; gap: 5px; }
    .mplan-sw { width: 10px; height: 10px; box-sizing: border-box; border: 1.5px solid; border-radius: 3px; }
    .mplan-track { position: relative; height: 128px; margin: 0 6px; }
    .mplan-track.is-narrow { display: none; height: 116px; }
    .mplan-track > span { position: absolute; }
    .mplan-past { left: 0; top: 21px; height: 8px; border-radius: 4px 0 0 4px; background: var(--surface-sunken); }
    .mplan-axis { left: 0; right: 0; top: 24px; height: 2px; background: var(--input-border); }
    .mplan-tick { top: 20px; width: 1px; height: 10px; background: var(--text-muted); opacity: .6; }
    .mplan-tick-l { top: 0; padding-left: 4px; color: var(--text-muted); font: 500 11px var(--font-mono); white-space: nowrap; }
    .mplan-mark { top: 20px; width: 9px; height: 9px; margin-left: -4.5px; background: var(--text-muted); transform: rotate(45deg); }
    .mplan-mark.is-event { background: var(--lv-problem); }
    /* The event's label ends at its marker, the RCA's starts at its own: they never meet (MeasurePlan.Marker). */
    /* Over the measures' stems, which run down through this band. */
    .mplan-mark-l { z-index: 1; top: 35px; margin-left: 4px; padding: 0 3px; background: var(--mplan-bg); color: var(--text-muted); font-size: 11.5px; white-space: nowrap; }
    .mplan-mark-l.is-event { margin-left: -4px; transform: translateX(-100%); }
    .mplan-today { top: 0; width: 2px; height: 34px; margin-left: -1px; background: var(--color-primary); }
    .mplan-today-l { top: 0; padding-left: 6px; color: var(--color-primary); font: 700 11px var(--font-mono); white-space: nowrap; }
    .mplan-today-l.is-end { padding: 0 6px 0 0; transform: translateX(-100%); }
    .mplan-stem { top: 26px; width: 1px; height: 30px; background: var(--text-muted); opacity: .6; }
    .mplan-c { position: absolute; top: 56px; display: flex; flex-direction: column; align-items: center; gap: 4px; transform: translateX(-50%); }
    .mplan-chips { display: flex; gap: 6px; }
    .mplan-chip { display: inline-flex; align-items: center; gap: 5px; height: 26px; box-sizing: border-box; padding: 0 10px; border: 1.5px solid; border-radius: 999px; font: 700 12px var(--font-mono); white-space: nowrap; }
    .mplan-chip i { font-size: 10px; }
    .mplan-chip.is-more { border-color: var(--input-border); color: var(--text-muted); }
    .mplan-day { color: var(--text-strong); font: 600 12px var(--font-mono); white-space: nowrap; }
    .mplan-when { font-size: 12px; font-weight: 600; white-space: nowrap; }
    .mc-plan .mplan-when { display: block; }
    .mplan-chip.is-planned, .mplan-sw.is-planned { border-color: var(--color-primary); background: var(--color-primary-soft); color: var(--text-link); }
    .mplan-chip.is-soon, .mplan-sw.is-soon { border-color: var(--status-warn); background: var(--status-warn-bg); color: var(--status-warn-text); }
    .mplan-chip.is-overdue, .mplan-sw.is-overdue { border-color: var(--status-bad); background: var(--status-bad-bg); color: var(--status-bad-text); }
    .mplan-chip.is-done, .mplan-sw.is-done { border-color: var(--status-good); background: var(--status-good-bg); color: var(--status-good-text); }
    .mplan-when.is-planned { color: var(--text-link); }
    .mplan-when.is-soon { color: var(--status-warn-text); }
    .mplan-when.is-overdue { color: var(--status-bad-text); }
    .mplan-when.is-done { color: var(--status-good-text); }

    .gate { display: grid; gap: 10px; margin-top: 14px; padding: 12px 14px; border: 1px solid var(--border-default); border-radius: 10px; background: var(--surface-sunken); }
    .gate h3 { margin: 0; color: var(--text-muted); font-family: var(--font-mono); font-size: 10.5px; font-weight: 500; letter-spacing: .1em; text-transform: uppercase; }
    .gate ul { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
    .gate li { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; color: var(--text-strong); font-size: 13.5px; }
    .gate li .lbl { min-width: 11.5em; }
    .gate-note { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 12px 0 0; color: var(--text-body); font-size: 13px; }
    .gate-note i { color: var(--status-warn-text); }
    .gate-note.info i { color: var(--status-info-text); }
    .gate-open { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }

    .mchk { display: flex; align-items: center; gap: 10px; min-height: 36px; padding: 2px 6px; border-radius: 8px; font-size: 13.5px; cursor: pointer; }
    .mchk:hover { background: var(--surface-hover); }
    .mchk input { flex: none; width: 18px; height: 18px; accent-color: var(--color-primary); }
    .rca-form .mchk > span { color: var(--text-body); font-family: var(--font-sans); font-size: 13.5px; font-weight: 400; letter-spacing: normal; text-transform: none; }
    .rca-form .mchk > span.mono { min-width: 2.2em; color: var(--text-strong); font-family: var(--font-mono); font-size: 13px; font-weight: 600; }
    .mcauses { display: grid; gap: 2px; min-width: 0; margin: 0; padding: 0; border: 0; }
    .mcauses legend { margin-bottom: 6px; padding: 0; }
    .mcauses .rca-h { margin: 8px 0 2px; }

    /* nl/fr/de words run longer ("Maatregelen" + "Achterstallig"): the section name stays whole, its state word gives way. */
    .rail-item .rail-label { flex-shrink: 0; }
    .rail-item .rail-count { min-width: 0; text-overflow: ellipsis; }
    .ev-meas { display: inline-flex; align-items: center; gap: 7px; color: var(--text-body); font-size: 13px; }
    .ev-meas.warn { color: var(--status-warn-text); }
    .ev-meas.good { color: var(--status-good-text); }
    .ev-meas.dim { color: var(--text-muted); }

    .shared-mode .mhdr,
    .shared-mode .mrow { grid-template-columns: 48px minmax(0, 4fr) 96px 150px 128px; }
    .shared-mode .mc-trk,
    .shared-mode .mhdr span:nth-child(4) { display: none; }
}

@layer responsive {
    /* The wide plan track's labels are sized for 760 px and up (MeasurePlan.Wide). */
    @container mplan (max-width: 759px) {
        .mplan-track.is-wide,
        .mplan-legend { display: none; }
        .mplan-track.is-narrow { display: block; }
    }

    @media (max-width: 1279px) {
        .mhdr { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; border: 0; clip: rect(0 0 0 0); }
        .mrow,
        .shared-mode .mrow { grid-template-columns: 44px minmax(0, 1fr) auto; grid-template-areas: "id main stat" "id meta act"; row-gap: 8px; padding: 12px 4px; }
        .mc-id { grid-area: id; align-self: start; }
        .mc-main { grid-area: main; }
        .mc-meta { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 18px; min-width: 0; grid-area: meta; }
        .mc-meta .mc { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px; }
        .mc-stat { grid-area: stat; justify-items: end; }
        .mc-act { grid-area: act; align-self: center; }
        .mmenu.smenu { left: auto; right: 0; }
        .pl-ic { display: inline; }
        .mc-trk.is-empty { position: absolute; width: 1px; height: 1px; margin: 0; padding: 0; overflow: hidden; clip: rect(0 0 0 0); }
    }

    @media (max-width: 767px) {
        .mrow,
        .shared-mode .mrow { grid-template-columns: minmax(0, 1fr); grid-template-areas: "top" "main" "meta" "act"; row-gap: 10px; padding: 14px 2px; }
        .mc-id { grid-area: top; justify-self: start; }
        .mc-stat { grid-area: top; justify-self: end; justify-items: end; }
        .mc-act { justify-content: flex-start; }
        .mc-act .ghost,
        .mc-act .iconbtn,
        .mc-id .iconbtn { min-width: 44px; min-height: 44px; }
        .mdetail { grid-column: 1 / -1; }
        .msub,
        .rca-measures,
        .ms-gapline .chips { gap: 10px; }
        .rca-measures .ghost,
        .mmenu button[role=menuitem],
        .mchk { min-height: 44px; }
        button.chip.ms-cause,
        button.chip.ms-mchip,
        button.chip.ms-btn { position: relative; }
        button.chip.ms-cause::after,
        button.chip.ms-mchip::after,
        button.chip.ms-btn::after { content: ""; position: absolute; inset: -11px -5px; min-width: 44px; }
        .gate li .lbl { flex-basis: 100%; min-width: 0; }
    }

    /* ---- Spec follow-ups (#14003/#14004 deviation audit, 21/10/2026) ----- */
    /* The Investigation process heading folds the block (collapsed by default on a phone). */
    /* Picker: a translation that matched sits under the original; a statement previews its notes. */
    .rca-prow .meta .rca-line-tr { color: var(--text-muted); font-style: italic; }
    .rca-pv-notes { max-height: 160px; overflow: auto; white-space: pre-wrap; }
    .rca-pv-stream .vhf-transcript-translation { grid-column: 1 / -1; }
    /* A cause added after sign-off shows its code; a share prints a cause chip's label. */
    .rca-addendum .cause-id { justify-self: start; }
    .chip.ms-cause .ms-cause-label { font-family: var(--font-sans); }
}

/* ---- RCA feedback round 1 (21/10/2026, picks A1 B1 C1+C2 D1 E2 G2 H1) --------------------------------
   Level hues: the problem coral, a direct cause blue, a root cause violet (measures keep the primary). */

@layer tokens {
    :root {
        --lv-problem: #F08A78;
        --lv-direct: #6DB4EA;
        --lv-direct-bg: rgba(91, 168, 224, 0.15);
        --lv-root: #B79AF5;
        --lv-root-bg: rgba(183, 154, 245, 0.15);
        /* The assistant's own sparkle (AssistantPanel.IcoSpark), as a mask so it takes any colour. */
        --spark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M10.5 2.5c.3 0 .5.2.6.5l1.2 4.1c.4 1.3 1.4 2.3 2.7 2.7l4.1 1.2c.6.2.6 1 0 1.2l-4.1 1.2c-1.3.4-2.3 1.4-2.7 2.7l-1.2 4.1c-.2.6-1 .6-1.2 0l-1.2-4.1c-.4-1.3-1.4-2.3-2.7-2.7L2 12.2c-.6-.2-.6-1 0-1.2l4.1-1.2c1.3-.4 2.3-1.4 2.7-2.7L9.9 3c.1-.3.3-.5.6-.5z'/%3E%3Cpath d='M19 1.5c.2 0 .3.1.4.3l.5 1.6c.1.4.4.7.8.8l1.6.5c.4.1.4.6 0 .7l-1.6.5c-.4.1-.7.4-.8.8l-.5 1.6c-.1.4-.6.4-.7 0l-.5-1.6c-.1-.4-.4-.7-.8-.8l-1.6-.5c-.4-.1-.4-.6 0-.7l1.6-.5c.4-.1.7-.4.8-.8l.5-1.6c.1-.2.2-.3.3-.3z'/%3E%3C/svg%3E");
    }

    html[data-theme="light"] {
        --lv-problem: #A82E2E;
        --lv-direct: #1F63A3;
        --lv-direct-bg: #E4EFF8;
        --lv-root: #6B3FB8;
        --lv-root-bg: #EFE8FA;
    }
}

@layer components {
    /* D1: the assistant wrote this. */
    /* The icon is a mask, so the who/when tip hangs off a wrapper: it shows on hover and on keyboard focus
       (Heimdall PR 596, UX review R1-3: a title attribute only shows to the mouse). WCAG 1.4.13: the tip is part
       of the wrapper's hover box and a bridge spans the gap, so the pointer can move onto it; Esc hides it until
       the pointer moves (blackbox.js). */
    .agent-mark { position: relative; display: inline-flex; flex: none; align-items: center; justify-content: center; width: 13px; height: 13px; vertical-align: -1px; color: var(--status-info-text); }
    .agent-mark > .agent-icon { display: block; width: 11px; height: 11px; background: currentColor; opacity: .85; -webkit-mask: var(--spark) center / contain no-repeat; mask: var(--spark) center / contain no-repeat; }
    .agent-mark:hover > .agent-icon,
    .agent-mark:focus-visible > .agent-icon { opacity: 1; }
    .agent-mark:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; border-radius: 3px; }
    .agent-mark[data-tip]:hover::after,
    .agent-mark[data-tip]:focus-visible::after { content: attr(data-tip); position: absolute; top: calc(100% + 6px); left: 50%; z-index: 45; width: max-content; max-width: 280px; padding: 4px 8px; border-radius: 6px; background: var(--text-strong); color: var(--surface-card); font: 500 11.5px/1.35 var(--font-sans); letter-spacing: 0; text-align: left; text-transform: none; white-space: normal; transform: translateX(-50%); }
    .agent-mark[data-tip]:hover::before { content: ""; position: absolute; top: 100%; left: -4px; right: -4px; height: 6px; }
    :root.bb-tips-off .agent-mark[data-tip]::after,
    :root.bb-tips-off .agent-mark[data-tip]::before { display: none; }

    /* Section headings in sentence case with a one-line purpose; "+" stays on the title row. */
    /* Container queries on the ledger and the strip, not on #rca: a container is the containing block for
       fixed descendants, and the progress list's backdrop must cover the page. */
    .rca-chain,
    .rca-strip-wrap { container-type: inline-size; }
    .rca-title { margin: 0; color: var(--text-strong); font: 650 15px/1.3 var(--font-sans); letter-spacing: 0; text-transform: none; }
    .rca-title .rca-toggle { all: unset; display: inline-flex; align-items: center; gap: 8px; cursor: pointer; }
    .rca-title .rca-toggle i { color: var(--text-muted); font-size: 11px; }
    .rca-title .rca-toggle:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; border-radius: 4px; }
    .rca-sub { min-width: 0; color: var(--text-muted); font-size: 12.5px; }
    .rca-block-head { align-items: baseline; gap: 4px 10px; }
    .rca-block-head .rca-actions { align-self: center; }
    .iconbtn.rca-add { color: var(--color-primary); }

    /* A1 ledger: rail | statement | evidence. */
    .rca-chain { position: relative; display: grid; grid-template-columns: minmax(0, 1fr); }
    .rca-chain:not(.is-causes)::before { content: ""; position: absolute; left: 15px; top: 28px; bottom: 34px; width: 2px; border-radius: 1px; background: linear-gradient(var(--lv-problem), color-mix(in srgb, var(--input-border) 70%, transparent) 18%); }
    .rca-row { display: grid; grid-template-columns: 32px minmax(0, 1fr) minmax(200px, 300px); column-gap: 18px; min-width: 0; }
    .rca-row.is-problem { grid-template-columns: 32px minmax(0, 1fr); }
    .rca-row:focus { outline: none; }
    .rca-row:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; border-radius: 8px; }
    .rca-rail { position: relative; z-index: 1; padding-top: 12px; }
    .rca-node { display: grid; place-items: center; width: 32px; height: 32px; border: 2px solid var(--input-border); border-radius: 50%; background: var(--surface-card); color: var(--text-strong); font: 600 13px var(--font-mono); }
    .rca-node.is-problem { border-color: var(--lv-problem); color: var(--lv-problem); font-size: 12px; }
    .rca-node.is-direct { border-color: var(--lv-direct); color: var(--lv-direct); }
    .rca-node.is-root { border-color: var(--lv-root); color: var(--lv-root); }
    .rca-main { display: grid; align-content: start; justify-items: start; gap: 6px; min-width: 0; padding: 12px 0 14px; }
    .rca-main > * { max-width: 100%; }
    .rca-side { display: grid; align-content: start; gap: 4px; min-width: 0; padding: 12px 0 14px; }
    .rca-row + .rca-row > .rca-main,
    .rca-row + .rca-row > .rca-side { border-top: 1px solid var(--border-subtle); }
    .rca-row-top { display: flex; align-items: flex-start; gap: 8px; width: 100%; min-width: 0; }
    .rca-row-top .rca-actions { margin-left: auto; }
    .rca-k { color: var(--text-muted); font-size: 12px; font-weight: 600; }
    .rca-k.is-problem { color: var(--lv-problem); }
    .rca-q { margin: 0; min-width: 0; color: var(--text-muted); font-size: 13px; overflow-wrap: anywhere; }
    .rca-text.is-answer { color: var(--text-strong); font-size: 14.5px; }
    .rca-text.is-lead { color: var(--text-strong); font-size: 15px; }
    .rca-clamp { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
    .rca-more { display: none; padding: 0; border: 0; background: none; color: var(--text-link); font: 600 12.5px var(--font-sans); cursor: pointer; }
    [data-overflowing] + .rca-more { display: inline-block; }
    .rca-more:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; border-radius: 3px; }
    .rca-tos { display: flex; flex-wrap: wrap; gap: 6px; }
    .rca-to { display: inline-flex; align-items: center; gap: 6px; min-height: 26px; padding: 0 10px 0 8px; border: 1px solid currentColor; border-radius: 999px; background: transparent; font: 600 12px var(--font-sans); cursor: pointer; }
    .rca-to:hover { background: color-mix(in srgb, currentColor 12%, transparent); }
    .rca-to.is-direct { color: var(--lv-direct); }
    .rca-to.is-root { color: var(--lv-root); }
    .rca-to b { font-family: var(--font-mono); }
    .rca-to i { font-size: 10px; }
    .rca-code { display: inline-grid; place-items: center; min-width: 32px; height: 26px; padding: 0 6px; border-radius: 7px; font: 600 12px var(--font-mono); }
    .rca-code.is-direct { background: var(--lv-direct-bg); color: var(--lv-direct); }
    .rca-code.is-root { background: var(--lv-root-bg); color: var(--lv-root); }
    .rca-cause-row .rca-rail { padding-top: 13px; }
    .rca-label { margin: 0; min-width: 0; color: var(--text-strong); font-size: 15.5px; font-weight: 650; line-height: 1.35; overflow-wrap: anywhere; }
    .rca-from { margin: 0; color: var(--text-muted); font-size: 12.5px; }
    .rca-from button { all: unset; color: var(--text-link); font-weight: 600; cursor: pointer; }
    .rca-from button:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; border-radius: 3px; }

    /* The evidence column: one line per item. */
    .rca-evl { display: grid; gap: 1px; min-width: 0; }
    .rca-evh { color: var(--text-muted); font-size: 11.5px; font-weight: 600; }
    .rca-evl .rca-evh { margin-bottom: 2px; }
    .chip.evidence-chip.is-row { display: grid; grid-template-columns: 14px auto auto minmax(0, 1fr); align-items: center; gap: 7px; width: 100%; height: auto; min-height: 28px; padding: 3px 7px; border: 0; border-radius: 6px; background: transparent; text-align: left; }
    button.chip.evidence-chip.is-row:hover { background: var(--surface-hover); color: var(--text-strong); }
    .chip.evidence-chip.is-row > i { justify-self: center; color: var(--text-muted); font-size: 11px; }
    .rca-addlink { justify-self: start; display: inline-flex; align-items: center; gap: 6px; margin-top: 2px; padding: 4px 7px; border: 0; border-radius: 6px; background: transparent; color: var(--text-link); font: 600 12.5px var(--font-sans); cursor: pointer; }
    .rca-addlink:hover { background: var(--surface-hover); }
    .rca-addlink:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 1px; }
    .rca-measures { display: grid; gap: 4px; margin-top: 8px; padding-top: 10px; border-top: 1px solid var(--border-subtle); }
    .rca-measure-chips { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }

    /* C1: meter, count and the next step beside the title; the count opens the list. */
    .rca-progress { position: relative; display: inline-flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; }
    .rca-meter-btn { display: inline-flex; align-items: center; gap: 9px; height: 28px; padding: 0 10px; border: 1px solid var(--border-default); border-radius: 999px; background: transparent; color: var(--text-body); cursor: pointer; }
    .rca-meter-btn:hover,
    .rca-meter-btn[aria-expanded="true"] { border-color: var(--color-primary); }
    .rca-meter-btn:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; }
    .rca-meter-btn b { color: var(--text-strong); font: 600 12px var(--font-mono); }
    .rca-meter { display: inline-flex; gap: 3px; }
    .rca-meter i { width: 16px; height: 6px; border-radius: 3px; background: color-mix(in srgb, var(--text-muted) 35%, transparent); }
    .rca-meter i.is-on { background: var(--color-primary); }
    .rca-meter i.is-warn { background: var(--status-warn); }
    .rca-next { display: inline-flex; align-items: center; gap: 6px; padding: 0; border: 0; border-radius: 4px; background: none; color: var(--text-link); font: 600 12.5px var(--font-sans); cursor: pointer; }
    .rca-next i { font-size: 10px; }
    .rca-next.is-missing { color: var(--status-warn-text); }
    .rca-next:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; }
    .rca-ready { display: inline-flex; align-items: center; gap: 6px; color: var(--status-good-text); font-size: 12.5px; font-weight: 600; }
    .rca-steps { position: absolute; top: calc(100% + 6px); left: 0; z-index: 30; display: grid; gap: 2px; width: max-content; min-width: 260px; max-width: min(340px, 86vw); margin: 0; padding: 6px; border: 1px solid var(--border-default); border-radius: 10px; background: var(--surface-raised); box-shadow: var(--shadow-overlay); list-style: none; }
    .rca-stepitem { all: unset; box-sizing: border-box; display: grid; grid-template-columns: 16px minmax(0, 1fr) auto; align-items: center; gap: 8px; width: 100%; min-height: 34px; padding: 0 8px; border-radius: 7px; color: var(--text-body); font-size: 13px; cursor: pointer; }
    .rca-stepitem:hover { background: var(--surface-hover); }
    .rca-stepitem:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: -2px; }
    .rca-stepitem.is-next { background: var(--color-primary-soft); color: var(--text-strong); }
    .rca-stepitem i { justify-self: center; font-size: 11px; color: var(--text-muted); }
    .rca-stepitem.is-done i { color: var(--status-good-text); }
    .rca-stepitem.is-missing,
    .rca-stepitem.is-missing i { color: var(--status-warn-text); }
    .rca-stepitem small { color: var(--text-muted); font: 500 11.5px var(--font-mono); }

    /* B1: what went wrong, left to right. */
    .rca-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin: 6px 0 14px; padding: 0; list-style: none; }
    .rca-strip-cell { position: relative; min-width: 0; }
    .rca-strip-cell + .rca-strip-cell::before { content: ""; position: absolute; top: 50%; left: -12px; width: 7px; height: 7px; border-top: 2px solid var(--text-muted); border-right: 2px solid var(--text-muted); transform: translateY(-50%) rotate(45deg); opacity: .7; }
    .rca-strip-cell > button { all: unset; box-sizing: border-box; display: grid; align-content: start; gap: 4px; width: 100%; height: 100%; min-height: 64px; padding: 10px 12px; border-radius: 10px; background: var(--surface-sunken); cursor: pointer; }
    .rca-strip-cell > button:hover:not(:disabled) { background: var(--surface-hover); }
    .rca-strip-cell > button:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; }
    .rca-strip-cell > button:disabled { cursor: default; }
    .rca-strip-k { font-size: 11.5px; font-weight: 600; }
    .rca-strip-cell.is-problem .rca-strip-k { color: var(--lv-problem); }
    .rca-strip-cell.is-direct .rca-strip-k { color: var(--lv-direct); }
    .rca-strip-cell.is-root .rca-strip-k { color: var(--lv-root); }
    .rca-strip-cell.is-measures .rca-strip-k { color: var(--color-primary); }
    .rca-strip-v { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; color: var(--text-strong); font-size: 13.5px; font-weight: 600; line-height: 1.35; overflow-wrap: anywhere; }
    .rca-strip-more { color: var(--text-muted); font-size: 11.5px; }
    .rca-strip-ms { display: flex; flex-wrap: wrap; gap: 4px; }
    .rca-strip-none { display: inline-flex; align-items: center; gap: 6px; color: var(--status-warn-text); font-size: 12px; font-weight: 600; }

    /* H1 + I1: statements. */
    .rca-stmt-name { color: var(--text-strong); font-size: 14px; font-weight: 600; }
    /* The role and its state wrap together, so the icons keep the right end of the row. */
    .rca-stmt-head { display: flex; flex: 1 1 auto; flex-wrap: wrap; align-items: center; gap: 6px 8px; min-width: 0; }
    .chip.rca-missing { border-color: var(--status-warn); color: var(--status-warn-text); }
    .chip.rca-src { height: 20px; margin-left: 8px; font-size: 10.5px; vertical-align: 1px; }

    /* Measures: the chevron gets its own hit area and room before the code; G2 verification callout. */
    .mc-id { gap: 8px; }
    .mc-id .iconbtn { width: 26px; height: 26px; }
    .mc-chev-space { flex: none; width: 26px; }
    .mhdr,
    .mrow { grid-template-columns: 72px minmax(0, 4fr) 96px minmax(0, 1.3fr) 150px 128px; padding-inline: 10px; }
    .shared-mode .mhdr,
    .shared-mode .mrow { grid-template-columns: 72px minmax(0, 4fr) 96px 150px 128px; }
    .mdetail { padding: 0; border: 0; background: none; }
    .mverify { display: grid; grid-template-columns: 30px minmax(0, 1fr); column-gap: 10px; row-gap: 2px; padding: 12px 14px; border: 1px solid color-mix(in srgb, var(--status-good) 45%, transparent); border-radius: 10px; background: color-mix(in srgb, var(--status-good-bg) 55%, var(--surface-card)); }
    .mverify-ic { grid-row: span 3; display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--status-good-bg); color: var(--status-good-text); font-size: 12px; }
    .mverify-k { color: var(--status-good-text); font-size: 12px; font-weight: 600; }
    .mverify-v { color: var(--text-strong); font-size: 14px; font-weight: 600; }
    .mverify-n { color: var(--text-body); font-size: 13.5px; white-space: pre-wrap; overflow-wrap: anywhere; }

    /* E2: where a link landed fills with the primary tint and fades back. */
    /* Holds the tint for a second (the smooth scroll is still landing), then fades back. */
    .bb-flash { animation: bb-flash 2.4s ease-in 1; }
    @keyframes bb-flash {
        0%, 45% { box-shadow: 0 0 0 2px var(--color-primary); background-color: color-mix(in srgb, var(--color-primary) 18%, var(--surface-raised)); }
        100% { box-shadow: 0 0 0 0 transparent; }
    }

    /* C2: the rail's ring and the parts with ticks under RCA. */
    .rail-ring { display: inline-grid; place-items: center; width: 18px; height: 18px; }
    .rail-ring svg { width: 18px; height: 18px; transform: rotate(-90deg); }
    .rail-ring .track { fill: none; stroke: color-mix(in srgb, var(--text-muted) 35%, transparent); stroke-width: 4; }
    .rail-ring .value { fill: none; stroke: var(--color-primary); stroke-width: 4; stroke-linecap: round; }
    .rail-item.is-sub { gap: 9px; padding: 4px 10px 4px 30px; font-size: 12.5px; }
    .rail-item.is-sub .rail-ic { width: 14px; font-size: 10px; }
    .rail-tick-done { color: var(--status-good-text); }
    .rail-tick-todo { color: var(--status-warn-text); }
    .rail-tick-optional { color: var(--text-muted); }
    .rail-count.is-todo { color: var(--status-warn-text); }
    .rail-collapsed .rail-item.is-sub { display: none; }

    /* Out-of-window edges in linked mode (round 1 follow-up: quieter): smaller rows, the label in regular
       weight and what it supports in one muted line under it. */
    .timeline-edge-popover.is-linked { width: 240px; padding: 4px; box-shadow: var(--shadow-card); }
    .timeline-controls .timeline-edge-popover.is-linked .timeline-edge-row { display: grid; grid-template-columns: 13px minmax(0, 1fr) auto; align-items: start; gap: .4rem; width: 100%; padding: .25rem .4rem; border-radius: var(--radius-chip); font-size: .7rem; line-height: 1.3; color: var(--text-body); }
    .timeline-edge-popover.is-linked .timeline-edge-row i { margin-top: .1rem; font-size: .62rem; }
    .timeline-edge-popover.is-linked .timeline-edge-row .row-label { color: var(--text-body); font-weight: 400; white-space: normal; }
    .timeline-edge-popover.is-linked .timeline-edge-row .row-time { font-size: .64rem; }
    .timeline-edge-popover.is-linked .timeline-events-label { font-size: .62rem; }
    .timeline-edge-row .row-supports { display: block; margin-top: 1px; overflow: hidden; color: var(--text-muted); font-size: .64rem; font-weight: 400; text-overflow: ellipsis; white-space: nowrap; }
    .timeline-edge-row.is-static { cursor: default; }

    /* The ledger's row buttons sit last, after the evidence and measures (round 1 follow-up). */
    .rca-row:has(> .rca-row-actions) { grid-template-columns: 32px minmax(0, 1fr) minmax(200px, 300px) auto; }
    .rca-row.is-problem:has(> .rca-row-actions) { grid-template-columns: 32px minmax(0, 1fr) auto; }
    .rca-row-actions { display: flex; align-items: flex-start; justify-content: flex-end; gap: 6px; padding: 12px 0 14px; }
    .rca-row + .rca-row > .rca-row-actions { border-top: 1px solid var(--border-subtle); }
    /* The Translate link sits right in a card's header row, before the card's own buttons. */
    #rca .section-head > .translate-link,
    #statements .section-head > .translate-link,
    #measures .section-head > .translate-link { margin-left: auto; }
    #rca .section-head > .translate-link + .section-actions,
    #statements .section-head > .translate-link + .section-actions,
    #measures .section-head > .translate-link + .section-actions { margin-left: 0; }
}

@layer responsive {
    @media (prefers-reduced-motion: no-preference) {
        .rca-next.is-missing,
        .rca-meter-btn.is-missing { animation: rca-attention .8s ease 2; }
    }

    @media (prefers-reduced-motion: reduce) {
        .bb-flash { animation: none; box-shadow: 0 0 0 2px var(--color-primary); }
    }

    @container (max-width: 760px) {
        .rca-row,
        .rca-row.is-problem { grid-template-columns: 32px minmax(0, 1fr); column-gap: 12px; }
        .rca-side { grid-column: 2; padding-top: 0; }
        .rca-row + .rca-row > .rca-side { border-top: 0; }
        .rca-row:has(> .rca-row-actions),
        .rca-row.is-problem:has(> .rca-row-actions) { grid-template-columns: 32px minmax(0, 1fr); }
        .rca-row-actions { grid-column: 2; padding-top: 0; }
        .rca-row + .rca-row > .rca-row-actions { border-top: 0; }
        /* The question takes the full width and the row's buttons line up under it, not in a column beside it. */
        .rca-row-top { flex-wrap: wrap; }
        .rca-row-top > .rca-q { flex: 1 1 100%; }
        .rca-row-top > .rca-actions { flex-wrap: nowrap; }
        .rca-strip { grid-template-columns: minmax(0, 1fr); gap: 14px; }
        .rca-strip-cell + .rca-strip-cell::before { top: -11px; left: 50%; transform: translateX(-50%) rotate(135deg); }
        .rca-strip-cell > button { min-height: 0; }
    }

    @media (max-width: 1279px) {
        .mrow,
        .shared-mode .mrow { grid-template-columns: 64px minmax(0, 1fr) auto; }
    }

    @media (max-width: 767px) {
        .mrow,
        .shared-mode .mrow { grid-template-columns: minmax(0, 1fr); padding-inline: 4px; }
    }

    @media (max-width: 640px) {
        /* "+" stays on the title row on phones (Nick, round 1). */
        #statements .section-head { flex-wrap: nowrap; justify-content: flex-start; }
        #statements .section-head .section-actions { width: auto; margin-left: auto; justify-content: flex-end; }
        .rca-stmt-role .rca-cause-top { flex-wrap: nowrap; align-items: flex-start; }
        .rca-stmt-role .rca-cause-top > .rca-actions { flex-wrap: nowrap; }
        .rca-block-head .rca-sub { order: 5; flex-basis: 100%; }
        .rca-block-head .rca-actions { margin-left: auto; }
        .chip.evidence-chip.is-row { min-height: 44px; }
        button.chip.evidence-chip.is-row .el { display: block; }
        .rca-meter-btn { height: 44px; }
        .rca-stepitem { min-height: 44px; }
        .rca-add { width: 44px; height: 44px; }
    }
}