/* ============================================================================================
 * mum.css - what the semantic class vocabulary in MumClassMap actually looks like.
 *
 * Every colour, space and radius below is a custom property. Phase 6 replaces Bootstrap with
 * Tailwind by changing the values in the token block - and by flipping UiProfile to Tailwind so
 * the Bootstrap half of each class stops being emitted. No component markup has to move.
 *
 * A note on :where(). While UiProfile.Compat is active an element carries both names, e.g.
 * class="mum-btn btn mum-btn--primary btn-primary". Rules for those shared names are written
 * inside :where(), which contributes zero specificity, so Bootstrap wins every declaration it
 * makes and this file only fills the gaps it leaves. That is what keeps the compat phase
 * pixel-for-pixel. When Bootstrap goes, these same rules become the entire appearance.
 *
 * Components that exist only here - the toasts, the chart states, the repeater, the native
 * dialog - are ordinary selectors, because nothing else is styling them.
 * ========================================================================================== */

/* ============================================================================================
 * Tokens
 * ========================================================================================== */
:root {
    color-scheme: light;

    /* Brand. ParselFly keeps its orange identity, deepened to a burnt amber so white text on a
       filled button clears WCAG AA (4.6:1). The bright tone is reserved for decoration. */
    --mum-accent: #c4500a;
    --mum-accent-strong: #9f3f07;
    --mum-accent-soft: #f2883a;
    --mum-accent-tint: #fff2e8;
    --mum-on-accent: #ffffff;

    /* Surfaces: one cool slate family, tinted toward the ink used for text. */
    --mum-color-bg: #f5f6f8;
    --mum-color-surface: #ffffff;
    --mum-color-surface-2: #f2f4f7;
    --mum-color-surface-3: #e9ecf1;
    --mum-color-border: #e3e7ed;
    --mum-color-border-strong: #cbd2dc;
    --mum-color-backdrop: rgba(10, 16, 28, 0.52);

    /* Text */
    --mum-color-text: #0f172a;
    --mum-color-text-muted: #586274;
    --mum-color-text-inverse: #ffffff;

    /* Status */
    --mum-color-danger: #c8283a;
    --mum-color-danger-tint: #fdeef0;
    --mum-color-success: #11804f;
    --mum-color-success-tint: #e8f6ef;
    --mum-color-warning: #9a5b00;
    --mum-color-warning-tint: #fff5e1;
    --mum-color-info: #2457c5;
    --mum-color-info-tint: #ebf1fe;

    /* Interaction */
    --mum-color-focus: #c4500a;
    --mum-color-skeleton: #e8ebf0;
    --mum-color-skeleton-sheen: rgba(255, 255, 255, 0.8);

    /* Chart series. chart.js reads these, so a chart follows the theme. */
    --mum-chart-1: #e46a1c;
    --mum-chart-2: #2f6fed;
    --mum-chart-3: #12a06a;
    --mum-chart-4: #8b5cf6;
    --mum-chart-5: #e0445a;
    --mum-chart-6: #0e98b4;
    --mum-chart-7: #b7791f;
    --mum-chart-8: #64748b;

    /* Space (4pt rhythm) */
    --mum-space-1: 0.25rem;
    --mum-space-2: 0.5rem;
    --mum-space-3: 0.75rem;
    --mum-space-4: 1rem;
    --mum-space-5: 1.5rem;
    --mum-space-6: 2rem;
    --mum-space-7: 3rem;

    /* Radius: tight on controls, soft on containers. */
    --mum-radius-sm: 0.375rem;
    --mum-radius-md: 0.625rem;
    --mum-radius-lg: 0.875rem;
    --mum-radius-xl: 1.25rem;
    --mum-radius-pill: 999px;

    /* Type */
    --mum-font-sans: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    --mum-font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    --mum-text-xs: 0.75rem;
    --mum-text-sm: 0.875rem;
    --mum-text-md: 0.9375rem;
    --mum-text-lg: 1.125rem;
    --mum-text-xl: 1.5rem;
    --mum-text-2xl: 1.875rem;

    /* Elevation: shadows carry the ink hue instead of pure black, one light source from above. */
    --mum-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05), 0 1px 1px rgba(15, 23, 42, 0.03);
    --mum-shadow-md: 0 1px 2px rgba(15, 23, 42, 0.04), 0 6px 20px -6px rgba(15, 23, 42, 0.12);
    --mum-shadow-lg: 0 2px 6px rgba(15, 23, 42, 0.06), 0 28px 56px -16px rgba(15, 23, 42, 0.28);
    --mum-shadow-accent: 0 8px 22px -8px rgba(196, 80, 10, 0.55);

    /* Motion: one rhythm for the whole product. */
    --mum-duration-fast: 140ms;
    --mum-duration: 220ms;
    --mum-duration-slow: 420ms;
    --mum-ease: cubic-bezier(0.22, 1, 0.36, 1);
    --mum-ease-in: cubic-bezier(0.55, 0, 1, 0.45);
    --mum-ease-spring: cubic-bezier(0.34, 1.4, 0.64, 1);

    /* Shell: the navigation rail stays ink-dark in both themes. */
    --pf-rail-bg: #0d1422;
    --pf-rail-bg-2: #131c2e;
    --pf-rail-border: rgba(255, 255, 255, 0.07);
    --pf-rail-text: #c3cbd8;
    --pf-rail-text-strong: #ffffff;
    --pf-rail-muted: #8692a6;
    --pf-rail-hover: rgba(255, 255, 255, 0.06);
    --pf-rail-active: rgba(242, 136, 58, 0.14);
    --pf-rail-active-text: #ffb27a;
    --pf-topbar-bg: rgba(245, 246, 248, 0.8);

    /* Layers */
    --mum-z-topbar: 20;
    --mum-z-backdrop: 30;
    --mum-z-sidebar: 40;
    --mum-z-dialog: 1055;
    --mum-z-toast: 1090;
}

/* The default "system" setting stamps nothing on the root element, so only the media query
   separates light from dark. An explicit choice stamps data-theme and must win either way. */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        color-scheme: dark;
        --mum-accent: #f2883a;
        --mum-accent-strong: #ffa86a;
        --mum-accent-soft: #f7a865;
        --mum-accent-tint: #2a1a0e;
        --mum-on-accent: #1b0d03;
        --mum-color-bg: #0a0f17;
        --mum-color-surface: #111926;
        --mum-color-surface-2: #162031;
        --mum-color-surface-3: #1d2a3e;
        --mum-color-border: #223047;
        --mum-color-border-strong: #33445e;
        --mum-color-backdrop: rgba(2, 5, 10, 0.7);
        --mum-color-text: #e8edf4;
        --mum-color-text-muted: #9aa6ba;
        --mum-color-text-inverse: #0a0f17;
        --mum-color-danger: #f37685;
        --mum-color-danger-tint: #33161c;
        --mum-color-success: #4fd39a;
        --mum-color-success-tint: #0f2a20;
        --mum-color-warning: #f2b84b;
        --mum-color-warning-tint: #2e2210;
        --mum-color-info: #86a9ff;
        --mum-color-info-tint: #15213a;
        --mum-color-focus: #f7a865;
        --mum-color-skeleton: #1d2a3e;
        --mum-color-skeleton-sheen: rgba(255, 255, 255, 0.07);
        --mum-chart-1: #f7a865;
        --mum-chart-2: #7ea4ff;
        --mum-chart-3: #4fd39a;
        --mum-chart-4: #b79cff;
        --mum-chart-5: #ff8597;
        --mum-chart-6: #3fcbe6;
        --mum-chart-7: #e6b062;
        --mum-chart-8: #9aa8bd;
        --mum-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
        --mum-shadow-md: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px -8px rgba(0, 0, 0, 0.55);
        --mum-shadow-lg: 0 2px 6px rgba(0, 0, 0, 0.4), 0 28px 56px -16px rgba(0, 0, 0, 0.75);
        --mum-shadow-accent: 0 8px 22px -8px rgba(242, 136, 58, 0.45);
        --pf-rail-bg: #070b12;
        --pf-rail-bg-2: #0d1320;
        --pf-topbar-bg: rgba(10, 15, 23, 0.78);
    }
}

:root[data-theme="dark"] {
    color-scheme: dark;
    --mum-accent: #f2883a;
    --mum-accent-strong: #ffa86a;
    --mum-accent-soft: #f7a865;
    --mum-accent-tint: #2a1a0e;
    --mum-on-accent: #1b0d03;
    --mum-color-bg: #0a0f17;
    --mum-color-surface: #111926;
    --mum-color-surface-2: #162031;
    --mum-color-surface-3: #1d2a3e;
    --mum-color-border: #223047;
    --mum-color-border-strong: #33445e;
    --mum-color-backdrop: rgba(2, 5, 10, 0.7);
    --mum-color-text: #e8edf4;
    --mum-color-text-muted: #9aa6ba;
    --mum-color-text-inverse: #0a0f17;
    --mum-color-danger: #f37685;
    --mum-color-danger-tint: #33161c;
    --mum-color-success: #4fd39a;
    --mum-color-success-tint: #0f2a20;
    --mum-color-warning: #f2b84b;
    --mum-color-warning-tint: #2e2210;
    --mum-color-info: #86a9ff;
    --mum-color-info-tint: #15213a;
    --mum-color-focus: #f7a865;
    --mum-color-skeleton: #1d2a3e;
    --mum-color-skeleton-sheen: rgba(255, 255, 255, 0.07);
    --mum-chart-1: #f7a865;
    --mum-chart-2: #7ea4ff;
    --mum-chart-3: #4fd39a;
    --mum-chart-4: #b79cff;
    --mum-chart-5: #ff8597;
    --mum-chart-6: #3fcbe6;
    --mum-chart-7: #e6b062;
    --mum-chart-8: #9aa8bd;
    --mum-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --mum-shadow-md: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px -8px rgba(0, 0, 0, 0.55);
    --mum-shadow-lg: 0 2px 6px rgba(0, 0, 0, 0.4), 0 28px 56px -16px rgba(0, 0, 0, 0.75);
    --mum-shadow-accent: 0 8px 22px -8px rgba(242, 136, 58, 0.45);
    --pf-rail-bg: #070b12;
    --pf-rail-bg-2: #0d1320;
    --pf-topbar-bg: rgba(10, 15, 23, 0.78);
}

/* ============================================================================================
 * Base
 * ========================================================================================== */
[hidden] {
    display: none !important;
}

/* Not inside :where(): Bootstrap's own .visually-hidden is !important, so it wins during compat
   anyway, and after Phase 6 this has to keep working on its own. */
.mum-visually-hidden {
    position: absolute !important;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
}

/* One visible focus ring for everything the components render. Written with real specificity so
   it survives a framework that would rather show nothing. */
.mum-btn:focus-visible,
.mum-input:focus-visible,
.mum-select:focus-visible,
.mum-textarea:focus-visible,
.mum-checkbox:focus-visible,
.mum-file:focus-visible,
.mum-tab:focus-visible,
.mum-page-link:focus-visible,
.mum-menu__item:focus-visible,
.mum-sort:focus-visible,
.mum-dialog-native__close:focus-visible,
.mum-excel__preview:focus-visible,
[data-mum-repeater-add]:focus-visible,
[data-mum-repeater-remove]:focus-visible,
[data-mum-file-remove]:focus-visible {
    outline: 2px solid var(--mum-color-focus);
    outline-offset: 2px;
    border-radius: var(--mum-radius-sm);
}

/* ============================================================================================
 * Layout
 * ========================================================================================== */
:where(.mum-grid-wrap) {
    /* The containing block of the table's absolutely positioned descendants (visually-hidden header labels, menus):
       without it they are positioned against an outer box, escape this scroll area and widen the whole page. */
    position: relative;
    margin-top: var(--mum-space-4);
    overflow-x: auto;
    border: 1px solid var(--mum-color-border);
    border-radius: var(--mum-radius-lg);
    background-color: var(--mum-color-surface);
    box-shadow: var(--mum-shadow-sm);
}

:where(.mum-scroll-x) {
    position: relative; /* same reason as .mum-grid-wrap */
    overflow-x: auto;
}

/* The toolbar and the form body are twelve column grids - the same thing Bootstrap's .row and
   .col-md-* express, said once, without a framework. */
:where(.mum-toolbar, .mum-form-grid) {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--mum-space-3);
    align-items: end;
}

:where(.mum-col-1) { grid-column: span 1; }
:where(.mum-col-2) { grid-column: span 2; }
:where(.mum-col-3) { grid-column: span 3; }
:where(.mum-col-4) { grid-column: span 4; }
:where(.mum-col-5) { grid-column: span 5; }
:where(.mum-col-6) { grid-column: span 6; }
:where(.mum-col-7) { grid-column: span 7; }
:where(.mum-col-8) { grid-column: span 8; }
:where(.mum-col-9) { grid-column: span 9; }
:where(.mum-col-10) { grid-column: span 10; }
:where(.mum-col-11) { grid-column: span 11; }
:where(.mum-col-12) { grid-column: 1 / -1; }

:where(.mum-field) {
    grid-column: span 3;
    min-width: 0;
}

:where(.mum-toolbar-actions) {
    grid-column: 1 / -1;
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: var(--mum-space-2);
    margin-top: var(--mum-space-2);
}

@media (max-width: 767.98px) {
    :where(.mum-field),
    :where([class*="mum-col-"]) {
        grid-column: 1 / -1;
    }
}

:where(.mum-field-group) {
    margin-bottom: var(--mum-space-4);
}

:where(.mum-stack) {
    display: flex;
    flex-direction: column;
    gap: var(--mum-space-2);
}

/* ============================================================================================
 * Controls
 * ========================================================================================== */
:where(.mum-label) {
    display: inline-block;
    margin-bottom: var(--mum-space-1);
    font-size: var(--mum-text-sm);
    font-weight: 600;
    color: var(--mum-color-text);
}

:where(.mum-input, .mum-select, .mum-textarea, .mum-file) {
    display: block;
    width: 100%;
    min-height: 2.75rem;
    padding: 0.55rem var(--mum-space-3);
    font-family: inherit;
    font-size: var(--mum-text-md);
    line-height: 1.5;
    color: var(--mum-color-text);
    background-color: var(--mum-color-surface);
    border: 1px solid var(--mum-color-border-strong);
    border-radius: var(--mum-radius-md);
    box-shadow: 0 1px 1px rgba(15, 23, 42, 0.03);
    transition: border-color var(--mum-duration-fast) var(--mum-ease),
                box-shadow var(--mum-duration) var(--mum-ease),
                background-color var(--mum-duration-fast) var(--mum-ease);
}

:where(.mum-input, .mum-textarea)::placeholder {
    color: var(--mum-color-text-muted);
    opacity: 0.8;
}

:where(.mum-input, .mum-select, .mum-textarea, .mum-file):hover {
    border-color: color-mix(in srgb, var(--mum-color-border-strong) 60%, var(--mum-color-text-muted));
}

:where(.mum-input, .mum-select, .mum-textarea, .mum-file):focus {
    border-color: var(--mum-accent);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--mum-accent) 16%, transparent);
    outline: none;
}

:where(.mum-input, .mum-select, .mum-textarea)[aria-invalid="true"] {
    border-color: var(--mum-color-danger);
}

:where(.mum-input, .mum-select, .mum-textarea, .mum-file):disabled {
    background-color: var(--mum-color-surface-2);
    color: var(--mum-color-text-muted);
    cursor: not-allowed;
}

:where(.mum-textarea) {
    min-height: 6rem;
    resize: vertical;
}

:where(.mum-checkbox) {
    width: 1rem;
    height: 1rem;
    accent-color: var(--mum-accent);
    cursor: pointer;
}

:where(.mum-switch) {
    display: flex;
    align-items: center;
    gap: var(--mum-space-2);
}

:where(.mum-switch__label) {
    margin: 0;
    font-size: var(--mum-text-md);
    color: var(--mum-color-text);
    cursor: pointer;
}

:where(.mum-check, .mum-radio-option) {
    display: flex;
    align-items: center;
    gap: var(--mum-space-2);
}

:where(.mum-radio) {
    width: 1rem;
    height: 1rem;
    accent-color: var(--mum-accent);
    cursor: pointer;
}

:where(.mum-check-label) {
    margin: 0;
    font-size: var(--mum-text-md);
    color: var(--mum-color-text);
    cursor: pointer;
}

/* A control flanked by an addon - a prefix, a unit, a button. The parts join into one shape. */
:where(.mum-input-group) {
    display: flex;
    align-items: stretch;
    width: 100%;
}

:where(.mum-input-group) > * {
    border-radius: 0;
}

:where(.mum-input-group) > :first-child {
    border-start-start-radius: var(--mum-radius-md);
    border-end-start-radius: var(--mum-radius-md);
}

:where(.mum-input-group) > :last-child {
    border-start-end-radius: var(--mum-radius-md);
    border-end-end-radius: var(--mum-radius-md);
}

:where(.mum-required) {
    margin-inline-start: 0.125rem;
    color: var(--mum-color-danger);
}

:where(.mum-help, .mum-file-name) {
    display: block;
    margin-top: var(--mum-space-1);
    font-size: var(--mum-text-sm);
    color: var(--mum-color-text-muted);
}

:where(.mum-error) {
    display: block;
    margin-top: var(--mum-space-1);
    font-size: var(--mum-text-sm);
    color: var(--mum-color-danger);
}

:where(.mum-status) {
    font-size: var(--mum-text-sm);
    color: var(--mum-color-text-muted);
}

/* ============================================================================================
 * Buttons
 * ========================================================================================== */
:where(.mum-btn) {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--mum-space-2);
    min-height: 2.75rem;
    padding: 0.55rem 1.05rem;
    font-family: inherit;
    font-size: var(--mum-text-md);
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: -0.005em;
    color: var(--mum-color-text);
    text-decoration: none;
    white-space: nowrap;
    background-color: var(--mum-color-surface);
    border: 1px solid var(--mum-color-border-strong);
    border-radius: var(--mum-radius-md);
    box-shadow: var(--mum-shadow-sm);
    cursor: pointer;
    touch-action: manipulation;
    transition: background-color var(--mum-duration-fast) var(--mum-ease),
                border-color var(--mum-duration-fast) var(--mum-ease),
                color var(--mum-duration-fast) var(--mum-ease),
                box-shadow var(--mum-duration) var(--mum-ease),
                transform var(--mum-duration-fast) var(--mum-ease);
}

:where(.mum-btn):hover:not(:disabled) {
    border-color: color-mix(in srgb, var(--mum-color-border-strong) 55%, var(--mum-color-text-muted));
    background-color: var(--mum-color-surface-2);
}

:where(.mum-btn):active:not(:disabled) {
    transform: translateY(1px) scale(0.985);
}

:where(.mum-btn):disabled,
:where(.mum-btn)[aria-disabled="true"] {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
}

:where(.mum-btn--primary) {
    color: var(--mum-on-accent);
    background-color: var(--mum-accent);
    background-image: linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0));
    border-color: var(--mum-accent);
    box-shadow: var(--mum-shadow-accent), inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

:where(.mum-btn--primary):hover:not(:disabled) {
    background-color: var(--mum-accent-strong);
    border-color: var(--mum-accent-strong);
    color: var(--mum-on-accent);
    transform: translateY(-1px);
}

:where(.mum-btn--secondary) {
    color: var(--mum-color-text);
    background-color: var(--mum-color-surface-2);
    border-color: var(--mum-color-border);
    box-shadow: none;
}

:where(.mum-btn--secondary):hover:not(:disabled) {
    background-color: var(--mum-color-surface-3);
}

:where(.mum-btn--danger) {
    color: #ffffff;
    background-color: var(--mum-color-danger);
    border-color: var(--mum-color-danger);
}

:where(.mum-btn--danger):hover:not(:disabled) {
    color: #ffffff;
    background-color: color-mix(in srgb, var(--mum-color-danger) 85%, #000);
    border-color: color-mix(in srgb, var(--mum-color-danger) 85%, #000);
}

:where(.mum-btn--success) {
    color: #ffffff;
    background-color: var(--mum-color-success);
    border-color: var(--mum-color-success);
}

:where(.mum-btn--success):hover:not(:disabled) {
    color: #ffffff;
    background-color: color-mix(in srgb, var(--mum-color-success) 85%, #000);
}

:where(.mum-btn--outline) {
    color: var(--mum-color-text);
    background-color: transparent;
    border-color: var(--mum-color-border-strong);
    box-shadow: none;
}

:where(.mum-btn--outline):hover:not(:disabled) {
    background-color: var(--mum-color-surface-2);
}

:where(.mum-btn--ghost) {
    color: var(--mum-accent-strong);
    background-color: transparent;
    border-color: transparent;
    box-shadow: none;
}

:where(.mum-btn--ghost):hover:not(:disabled) {
    background-color: var(--mum-accent-tint);
    border-color: transparent;
}

:where(.mum-btn--sm) {
    min-height: 2.25rem;
    padding: 0.3rem 0.7rem;
    font-size: var(--mum-text-sm);
    border-radius: var(--mum-radius-sm);
}

:where(.mum-btn--lg) {
    min-height: 3.25rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    border-radius: var(--mum-radius-lg);
}

/* ============================================================================================
 * Table / grid
 * ========================================================================================== */
:where(.mum-table) {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background-color: var(--mum-color-surface);
    color: var(--mum-color-text);
}

:where(.mum-table) thead {
    /* A quiet header: the data is the hero, not the chrome around it. */
    background: var(--mum-color-surface-2);
    color: var(--mum-color-text-muted);
    font-weight: 600;
}

:where(.mum-table) th,
:where(.mum-table) td {
    padding: 0.85rem var(--mum-space-4);
    vertical-align: middle;
    border-bottom: 1px solid var(--mum-color-border);
    font-size: var(--mum-text-sm);
}

:where(.mum-table) thead th {
    padding-top: 0.7rem;
    padding-bottom: 0.7rem;
    font-size: var(--mum-text-xs);
    letter-spacing: 0.03em;
    text-align: start;
    white-space: nowrap;
    border-bottom: 1px solid var(--mum-color-border);
}

:where(.mum-table) tbody tr {
    transition: background-color var(--mum-duration-fast) var(--mum-ease);
}

:where(.mum-table) tbody tr:last-child td {
    border-bottom: 0;
}

:where(.mum-table) tbody tr:hover {
    background-color: color-mix(in srgb, var(--mum-accent-tint) 70%, var(--mum-color-surface));
}

:where(.mum-table) caption {
    caption-side: top;
    padding: var(--mum-space-2) var(--mum-space-4);
    font-size: var(--mum-text-sm);
    color: var(--mum-color-text-muted);
    text-align: start;
}

:where(.mum-table--compact) th,
:where(.mum-table--compact) td {
    padding: var(--mum-space-2) var(--mum-space-3);
    border: 1px solid var(--mum-color-border);
}

:where(.mum-table__select) {
    width: 2.5rem;
    text-align: center;
}

:where(.mum-table__actions) {
    width: 3rem;
    text-align: end;
}

:where(.mum-row--selected) {
    background-color: var(--mum-accent-tint);
}

:where(.mum-sort) {
    display: inline-flex;
    align-items: center;
    gap: var(--mum-space-1);
    padding: 0;
    font: inherit;
    color: inherit;
    background: none;
    border: 0;
    cursor: pointer;
}

:where(.mum-sort__icon) {
    margin-inline-start: var(--mum-space-1);
    opacity: 0.65;
}

:where(.mum-numeric) {
    font-family: var(--mum-font-mono);
    font-variant-numeric: tabular-nums;
    text-align: end;
}

/* ============================================================================================
 * Pagination
 * ========================================================================================== */
:where(.mum-pagination) {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--mum-space-1);
    padding: 0;
    margin: var(--mum-space-4) 0 0;
    list-style: none;
}

:where(.mum-page-link) {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.25rem;
    min-height: 2.25rem;
    padding: 0.3rem var(--mum-space-3);
    font-size: var(--mum-text-sm);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    color: var(--mum-color-text);
    text-decoration: none;
    background-color: var(--mum-color-surface);
    border: 1px solid var(--mum-color-border);
    border-radius: var(--mum-radius-sm);
    cursor: pointer;
    transition: background-color var(--mum-duration-fast) var(--mum-ease),
                border-color var(--mum-duration-fast) var(--mum-ease);
}

:where(.mum-page-link):hover {
    border-color: var(--mum-accent);
    color: var(--mum-accent-strong);
}

:where(.mum-page-item--active) :where(.mum-page-link) {
    color: var(--mum-on-accent);
    background-color: var(--mum-accent);
    border-color: var(--mum-accent);
}

:where(.mum-page-item--disabled) {
    opacity: 0.5;
    pointer-events: none;
}

/* ============================================================================================
 * Badge / alert / menu
 * ========================================================================================== */
:where(.mum-badge) {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.15rem 0.55rem;
    font-size: var(--mum-text-xs);
    font-weight: 600;
    line-height: 1.5;
    color: var(--mum-color-text-muted);
    background-color: var(--mum-color-surface-2);
    border: 1px solid var(--mum-color-border);
    border-radius: var(--mum-radius-sm);
}

:where(.mum-alert) {
    padding: var(--mum-space-3) var(--mum-space-4);
    color: var(--mum-color-text);
    background-color: var(--mum-color-surface-2);
    border: 1px solid var(--mum-color-border);
    border-radius: var(--mum-radius-md);
    animation: mum-rise var(--mum-duration) var(--mum-ease);
}

:where(.mum-alert--error, .mum-form-errors) {
    color: var(--mum-color-danger);
    background-color: var(--mum-color-danger-tint);
    border: 1px solid color-mix(in srgb, var(--mum-color-danger) 35%, transparent);
    border-inline-start: 3px solid var(--mum-color-danger);
    border-radius: var(--mum-radius-md);
    padding: var(--mum-space-3) var(--mum-space-4);
}

:where(.mum-menu-wrap) {
    position: relative;
}

:where(.mum-menu__toggle) {
    background: none;
    border: 0;
    color: inherit;
    cursor: pointer;
}

:where(.mum-menu) {
    position: absolute;
    inset-inline-end: 0;
    z-index: 10;
    display: none;
    min-width: 11rem;
    padding: var(--mum-space-1);
    margin: 0;
    list-style: none;
    background-color: var(--mum-color-surface);
    border: 1px solid var(--mum-color-border);
    border-radius: var(--mum-radius-md);
    box-shadow: var(--mum-shadow-lg);
    transform-origin: top right;
}

:where(.mum-menu--open) {
    display: block;
    animation: mum-pop var(--mum-duration) var(--mum-ease);
}

:where(.mum-menu__item) {
    display: block;
    width: 100%;
    padding: var(--mum-space-2) var(--mum-space-3);
    border-radius: var(--mum-radius-sm);
    font-size: var(--mum-text-sm);
    color: var(--mum-color-text);
    text-align: start;
    text-decoration: none;
    background: none;
    border: 0;
    cursor: pointer;
}

:where(.mum-menu__item):hover {
    background-color: var(--mum-color-surface-2);
}

:where(.mum-menu__item--danger) {
    color: var(--mum-color-danger);
}

/* ============================================================================================
 * Every <dialog>: centred in the viewport
 * The browser centres a modal dialog with `margin: auto` from its UA stylesheet. Tailwind v4's
 * preflight (`*, ::backdrop { margin: 0; padding: 0; border: 0 solid }`) resets that, so every
 * dialog opened with showModal() landed in the top-left corner. Preflight lives in
 * @layer base and this file is unlayered, so these plain selectors win without !important.
 * They apply to all dialogs (mum-dialog, mum-dialog-native / Excel, page-specific ones) and
 * sit in :where() so any component class can still override them.
 * ========================================================================================== */
:where(dialog) {
    margin: auto;
}

:where(dialog:modal) {
    position: fixed;
    inset: 0;
    margin: auto;
    max-width: calc(100vw - 2rem);
    max-height: calc(100vh - 2rem);
    max-height: calc(100dvh - 2rem);
}

:where(dialog)::backdrop {
    background-color: var(--mum-color-backdrop);
    backdrop-filter: blur(3px);
}

/* Every modal grows out of the page instead of snapping in. */
dialog[open] {
    animation: mum-dialog-in var(--mum-duration-slow) var(--mum-ease);
}

dialog[open]::backdrop {
    animation: mum-fade-in var(--mum-duration) var(--mum-ease);
}

@keyframes mum-dialog-in {
    from { opacity: 0; transform: translateY(12px) scale(0.97); }
}

@keyframes mum-fade-in {
    from { opacity: 0; }
}

@keyframes mum-pop {
    from { opacity: 0; transform: translateY(-4px) scale(0.97); }
}

@keyframes mum-rise {
    from { opacity: 0; transform: translateY(6px); }
}

/* The <mum-dialog> element is only a positioning shell: the panel/content inside draw the card,
   so the shell itself is transparent and borderless. Clicks on it (outside the panel) are the
   backdrop clicks dialog.js listens for. */
dialog.mum-dialog {
    width: fit-content;
    padding: 0;
    color: inherit;
    background: transparent;
    border: 0;
    overflow: visible;
}

dialog.mum-dialog:modal {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================================================================
 * Bootstrap-modal dialog vocabulary
 * These keep their Bootstrap layout during compat; the rules below are what they fall back to.
 * ========================================================================================== */
:where(.mum-dialog__panel) {
    display: flex;
    flex-direction: column;
    width: min(32rem, calc(100vw - 2rem));
    max-height: calc(100vh - 2rem);
    max-height: calc(100dvh - 2rem);
    margin: 0 auto;
}

:where(.mum-dialog__panel) > :where(.mum-dialog__content) {
    display: flex;
    flex-direction: column;
    min-height: 0;
    max-height: inherit;
    overflow: hidden;
    box-shadow: var(--mum-shadow-lg);
}

:where(.mum-dialog__content) > :where(.mum-dialog__header),
:where(.mum-dialog__content) > :where(.mum-dialog__footer) {
    flex: 0 0 auto;
}

:where(.mum-dialog__content) > :where(.mum-dialog__body) {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
}

:where(.mum-dialog__panel--sm) { width: min(24rem, calc(100vw - 2rem)); }
:where(.mum-dialog__panel--lg) { width: min(50rem, calc(100vw - 2rem)); }
:where(.mum-dialog__panel--xl) { width: min(70rem, calc(100vw - 2rem)); }

:where(.mum-dialog__close) {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    font-size: var(--mum-text-xl);
    line-height: 1;
    color: var(--mum-color-text-muted);
    background: none;
    border: 0;
    border-radius: var(--mum-radius-sm);
    cursor: pointer;
}

:where(.mum-dialog__content) {
    background-color: var(--mum-color-surface);
    color: var(--mum-color-text);
    border: 1px solid var(--mum-color-border);
    border-radius: var(--mum-radius-lg);
}

:where(.mum-dialog__header),
:where(.mum-dialog__footer) {
    display: flex;
    align-items: center;
    gap: var(--mum-space-2);
    padding: var(--mum-space-4);
}

:where(.mum-dialog__header) {
    justify-content: space-between;
    border-bottom: 1px solid var(--mum-color-border);
}

:where(.mum-dialog__footer) {
    justify-content: flex-end;
    border-top: 1px solid var(--mum-color-border);
}

:where(.mum-dialog__title) {
    margin: 0;
    font-size: var(--mum-text-lg);
    font-weight: 600;
}

:where(.mum-dialog__body) {
    padding: var(--mum-space-4);
}

/* ============================================================================================
 * Native <dialog>
 * No Bootstrap equivalent exists on purpose: .modal is display:none, which would hide a dialog
 * that is genuinely open. Everything here is this file's own.
 * ========================================================================================== */
.mum-dialog-native {
    width: min(52rem, calc(100vw - 2rem));
    max-width: none;
    max-height: 88vh;
    padding: 0;
    color: var(--mum-color-text);
    background-color: var(--mum-color-surface);
    border: 1px solid var(--mum-color-border);
    border-radius: var(--mum-radius-lg);
    box-shadow: var(--mum-shadow-lg);
    overflow: hidden;
    z-index: var(--mum-z-dialog);
}

.mum-dialog-native::backdrop {
    background-color: var(--mum-color-backdrop);
}

.mum-dialog-native__panel {
    display: flex;
    flex-direction: column;
    max-height: 88vh;
}

.mum-dialog-native__header {
    display: flex;
    flex: 0 0 auto;
    align-items: center;
    justify-content: space-between;
    gap: var(--mum-space-3);
    padding: var(--mum-space-4);
    border-bottom: 1px solid var(--mum-color-border);
}

.mum-dialog-native__title {
    margin: 0;
    font-size: var(--mum-text-lg);
    font-weight: 600;
}

.mum-dialog-native__close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    font-size: var(--mum-text-xl);
    line-height: 1;
    color: var(--mum-color-text-muted);
    background: none;
    border: 0;
    border-radius: var(--mum-radius-sm);
    cursor: pointer;
}

.mum-dialog-native__close:hover {
    color: var(--mum-color-text);
    background-color: var(--mum-color-surface-2);
}

.mum-dialog-native__body {
    flex: 1 1 auto;
    padding: var(--mum-space-4);
    overflow-y: auto;
}

.mum-dialog-native__footer {
    display: flex;
    flex: 0 0 auto;
    align-items: center;
    justify-content: flex-end;
    gap: var(--mum-space-2);
    padding: var(--mum-space-4);
    border-top: 1px solid var(--mum-color-border);
}

/* ============================================================================================
 * Tabs
 * ========================================================================================== */
:where(.mum-tabs) {
    display: flex;
    gap: var(--mum-space-1);
    padding: 0.25rem;
    background: var(--mum-color-surface-2);
    border: 1px solid var(--mum-color-border);
    border-radius: var(--mum-radius-md);
}

:where(.mum-tab) {
    flex: 1 1 0;
    min-height: 2.5rem;
    padding: var(--mum-space-2) var(--mum-space-4);
    font: inherit;
    font-size: var(--mum-text-sm);
    font-weight: 600;
    color: var(--mum-color-text-muted);
    background: none;
    border: 0;
    border-radius: var(--mum-radius-sm);
    cursor: pointer;
    transition: color var(--mum-duration-fast) var(--mum-ease),
                background-color var(--mum-duration) var(--mum-ease),
                box-shadow var(--mum-duration) var(--mum-ease);
}

:where(.mum-tab):hover {
    color: var(--mum-color-text);
}

:where(.mum-tab--active) {
    color: var(--mum-color-text);
    background: var(--mum-color-surface);
    box-shadow: var(--mum-shadow-sm), 0 0 0 1px var(--mum-color-border);
}

:where(.mum-tabpanel) {
    padding-top: var(--mum-space-4);
}

/* ============================================================================================
 * Excel dialog
 * ========================================================================================== */
.mum-excel__picker {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--mum-space-2);
}

.mum-excel__picker .mum-file {
    flex: 1 1 16rem;
}

.mum-excel__result {
    margin-bottom: var(--mum-space-3);
}

.mum-excel__preview {
    max-height: 22rem;
    overflow: auto;
    border: 1px solid var(--mum-color-border);
    border-radius: var(--mum-radius-md);
}

.mum-excel__preview:empty {
    border: 0;
}

/* ============================================================================================
 * Chart
 * ========================================================================================== */
:where(.mum-chart) {
    position: relative;
    margin: 0;
}

:where(.mum-chart__canvas) {
    display: block;
    width: 100%;
    max-width: 100%;
}

:where(.mum-chart__mask) {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--mum-space-2);
    background-color: var(--mum-color-surface);
    color: var(--mum-color-text-muted);
    font-size: var(--mum-text-sm);
}

.mum-chart__skeleton {
    width: 70%;
    height: 40%;
}

:where(.mum-chart__error) {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--mum-space-3);
    padding: var(--mum-space-4);
    text-align: center;
    color: var(--mum-color-danger);
    background-color: var(--mum-color-danger-tint);
    border-radius: var(--mum-radius-md);
}

:where(.mum-chart__caption) {
    margin-top: var(--mum-space-2);
    font-size: var(--mum-text-sm);
    color: var(--mum-color-text-muted);
    text-align: center;
}

/* ============================================================================================
 * Repeater
 * ========================================================================================== */
:where(.mum-repeater) {
    margin-bottom: var(--mum-space-4);
}

:where(.mum-repeater__items) {
    display: flex;
    flex-direction: column;
    gap: var(--mum-space-2);
}

:where(.mum-repeater__item) {
    display: flex;
    align-items: flex-start;
    gap: var(--mum-space-3);
    padding: var(--mum-space-3);
    background-color: var(--mum-color-surface-2);
    border: 1px solid var(--mum-color-border);
    border-radius: var(--mum-radius-md);
}

:where(.mum-repeater__fields) {
    display: flex;
    flex: 1 1 auto;
    flex-wrap: wrap;
    gap: var(--mum-space-3);
    min-width: 0;
}

:where(.mum-repeater__fields) > * {
    flex: 1 1 12rem;
    min-width: 0;
    margin-bottom: 0;
}

:where(.mum-repeater__index) {
    flex: 0 0 auto;
    padding-top: 0.4rem;
    font-size: var(--mum-text-sm);
    font-variant-numeric: tabular-nums;
    color: var(--mum-color-text-muted);
}

.mum-repeater__remove {
    flex: 0 0 auto;
    align-self: center;
}

:where(.mum-repeater__actions) {
    margin-top: var(--mum-space-2);
}

/* ============================================================================================
 * Forms
 * ========================================================================================== */
:where(.mum-form) {
    display: flex;
    flex-direction: column;
}

:where(.mum-form-actions) {
    display: flex;
    gap: var(--mum-space-2);
    margin-top: var(--mum-space-4);
}

:where(.mum-fieldset) {
    padding: var(--mum-space-4);
    margin-bottom: var(--mum-space-4);
    border: 1px solid var(--mum-color-border);
    border-radius: var(--mum-radius-md);
}

:where(.mum-legend) {
    width: auto;
    padding: 0 var(--mum-space-2);
    font-size: var(--mum-text-md);
    font-weight: 600;
    color: var(--mum-color-text);
}

:where(.mum-file-preview) {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--mum-space-2);
    margin-top: var(--mum-space-2);
    font-size: var(--mum-text-sm);
}

/* ============================================================================================
 * State: empty, skeleton, toast
 * ========================================================================================== */
:where(.mum-empty) {
    padding: var(--mum-space-7) var(--mum-space-4);
    color: var(--mum-color-text-muted);
    text-align: center;
}

/* Bootstrap's .placeholder-glow animates its children; this animates itself, so it works either
   way and keeps working once Bootstrap is gone. */
.mum-skeleton,
.mum-skeleton__bar {
    position: relative;
    display: block;
    min-height: 1em;
    overflow: hidden;
    background-color: var(--mum-color-skeleton);
    border-radius: var(--mum-radius-sm);
}

.mum-skeleton::after,
.mum-skeleton__bar::after {
    position: absolute;
    inset: 0;
    content: "";
    background-image: linear-gradient(90deg, transparent, var(--mum-color-skeleton-sheen), transparent);
    transform: translateX(-100%);
    animation: mum-shimmer 1.4s infinite;
}

@keyframes mum-shimmer {
    100% {
        transform: translateX(100%);
    }
}

/* core.js creates this host on first use; nothing styled it until now. */
.mum-toasts {
    position: fixed;
    top: var(--mum-space-4);
    inset-inline-end: var(--mum-space-4);
    z-index: var(--mum-z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--mum-space-2);
    width: min(24rem, calc(100vw - 2rem));
    pointer-events: none;
}

.mum-toast {
    padding: var(--mum-space-3) var(--mum-space-4);
    font-size: var(--mum-text-sm);
    font-weight: 500;
    color: var(--mum-color-text);
    background-color: var(--mum-color-surface);
    border: 1px solid var(--mum-color-border);
    border-inline-start: 3px solid var(--mum-color-text-muted);
    border-radius: var(--mum-radius-md);
    box-shadow: var(--mum-shadow-lg);
    pointer-events: auto;
    animation: mum-toast-in var(--mum-duration-slow) var(--mum-ease-spring);
}

.mum-toast--info {
    border-inline-start-color: var(--mum-color-info);
    background-color: var(--mum-color-info-tint);
}

.mum-toast--success {
    border-inline-start-color: var(--mum-color-success);
    background-color: var(--mum-color-success-tint);
}

.mum-toast--error {
    border-inline-start-color: var(--mum-color-danger);
    background-color: var(--mum-color-danger-tint);
}

.mum-toast.is-leaving {
    opacity: 0;
    transform: translateY(-0.25rem);
    transition: opacity var(--mum-duration) var(--mum-ease),
                transform var(--mum-duration) var(--mum-ease);
}

@keyframes mum-toast-in {
    from {
        opacity: 0;
        transform: translateX(1.5rem) scale(0.96);
    }
}

/* ============================================================================================
 * Reduced motion
 * Scoped to this vocabulary rather than the whole document, so it is a statement about what
 * these components do and not a blunt override of everything else on the page.
 * ========================================================================================== */
@media (prefers-reduced-motion: reduce) {
    [class*="mum-"],
    [class*="mum-"] *,
    [class*="mum-"]::before,
    [class*="mum-"]::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}

/* =============================================================================
   Application shell
   -----------------------------------------------------------------------------
   The admin chrome, replacing AdminLTE. Roughly sixty lines of grid and flexbox
   instead of a 1.4 MB stylesheet plus a jQuery treeview widget.
   All colours come from the token block at the top of this file, so the shell
   follows the theme without a second palette.
   ========================================================================== */

.mum-app {
    margin: 0;
    min-height: 100dvh;                 /* dvh, not vh: vh is wrong on mobile browsers */
    background: var(--mum-color-bg);
    color: var(--mum-color-text);
    font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
}

.mum-shell {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100dvh;
}

/* Keyboard users land here first; it is off-screen until focused. */
.mum-skip-link {
    position: absolute;
    inset-inline-start: -9999px;
    z-index: 100;
    padding: 0.75rem 1rem;
    background: var(--mum-accent);
    color: #fff;
    border-start-start-radius: 0;
    border-start-end-radius: 0;
    border-end-end-radius: var(--mum-radius-md);
    border-end-start-radius: 0;
}
.mum-skip-link:focus { inset-inline-start: 0; top: 0; }

/* ---------------------------------------------------------------- sidebar */
.mum-sidebar {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem 0.75rem;
    background: var(--mum-color-surface-2);
    border-inline-end: 1px solid var(--mum-color-border);
    overflow-y: auto;
}

.mum-sidebar__brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.25rem 0.5rem 0.75rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}
.mum-sidebar__logo { color: var(--mum-accent); }

.mum-sidebar__user {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.6rem 0.5rem;
    margin-bottom: 0.5rem;
    border-top: 1px solid var(--mum-color-border);
    border-bottom: 1px solid var(--mum-color-border);
}
.mum-sidebar__user-info { display: flex; flex-direction: column; min-width: 0; }
.mum-sidebar__user-name { font-size: 0.875rem; font-weight: 600; }
.mum-sidebar__user-mail {
    font-size: 0.75rem;
    color: var(--mum-color-text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.mum-avatar {
    display: grid;
    place-items: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    background: var(--mum-accent);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 700;
    flex: 0 0 auto;
}

/* ---------------------------------------------------------------- nav */
.mum-nav__list { list-style: none; margin: 0; padding: 0; }
.mum-nav__list--nested { padding-inline-start: 0.85rem; }
.mum-nav__empty { padding: 1rem 0.5rem; font-size: 0.85rem; color: var(--mum-color-text-muted); }

.mum-nav__link {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    /* 44px minimum touch target. */
    min-height: 2.75rem;
    padding: 0.5rem 0.65rem;
    border-radius: var(--mum-radius-md);
    color: var(--mum-color-text);
    font-size: 0.9rem;
    text-decoration: none;
    cursor: pointer;
}
.mum-nav__link:hover { background: var(--mum-color-surface-3); }
.mum-nav__link.is-active {
    background: var(--mum-accent-tint);
    color: var(--mum-accent-strong);
    font-weight: 600;
}
.mum-nav__icon { width: 1.125rem; height: 1.125rem; flex: 0 0 auto; }
.mum-nav__text { flex: 1 1 auto; }
.mum-nav__chevron { width: 1rem; height: 1rem; transition: transform 150ms ease; }

.mum-nav__group > summary { list-style: none; }
.mum-nav__group > summary::-webkit-details-marker { display: none; }
.mum-nav__group[open] > summary .mum-nav__chevron { transform: rotate(180deg); }

/* ---------------------------------------------------------------- content */
.mum-content { display: flex; flex-direction: column; min-width: 0; }

.mum-topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    background: var(--mum-color-surface);
    border-bottom: 1px solid var(--mum-color-border);
}
.mum-topbar__titles { flex: 1 1 auto; min-width: 0; }
.mum-topbar__title {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}
.mum-topbar__actions { display: flex; align-items: center; gap: 0.35rem; }

.mum-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    font-size: 0.75rem;
    color: var(--mum-color-text-muted);
}
.mum-breadcrumb span + span::before { content: "/"; margin-inline-end: 0.35rem; opacity: 0.6; }

.mum-icon-btn {
    display: grid;
    place-items: center;
    width: 2.75rem;
    height: 2.75rem;           /* 44px touch target */
    border: 0;
    border-radius: var(--mum-radius-md);
    background: transparent;
    color: var(--mum-color-text);
    cursor: pointer;
}
.mum-icon-btn:hover { background: var(--mum-color-surface-3); }

.mum-main { flex: 1 1 auto; padding: 1.25rem; }
.mum-main:focus { outline: none; }

.mum-sidebar-toggle { display: none; }
.mum-sidebar-backdrop { display: none; }

/* ---------------------------------------------------------------- responsive */
@media (max-width: 1023px) {
    .mum-shell { grid-template-columns: 1fr; }

    .mum-sidebar {
        position: fixed;
        inset-block: 0;
        inset-inline: 0 auto;
        z-index: 40;
        width: 17rem;
        transform: translateX(-100%);
        transition: transform 200ms ease;
    }
    .mum-sidebar.is-open { transform: translateX(0); }

    .mum-sidebar-backdrop {
        display: block;
        position: fixed;
        inset: 0;
        z-index: 30;
        background: rgb(0 0 0 / 0.5);
    }

    .mum-sidebar-toggle { display: grid; }
    .mum-main { padding: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
    .mum-sidebar,
    .mum-nav__chevron { transition: none; }
}