/* NOTE: MwFieldSelect — reusable field/path picker (the left-hand side of a filter condition).
   Prefix: mw-fs-*. One chip + one dropdown for both flat-field and entity-graph modes. Themed via
   MudBlazor palette variables; the relation palette (gold/magenta/orange/purple) matches the path UIs.
   Counterpart to mw-operator-select.css (mw-os-*). */

.mw-fs {
    /* Relation palette — shared with the entity-path UIs. */
    --mw-fs-nav: #e5c07b;       /* navigable / forward reference */
    --mw-fs-term: #be58c8;      /* terminal / value             */
    --mw-fs-boundary: #e8864a;  /* boundary / filter / event    */
    --mw-fs-root: #7C4DFF;      /* root / nested                */

    display: inline-flex;
    position: relative;
    max-width: 100%;
}

/* ── Chip activator (one chip for both modes) ── */
.mw-fs-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    row-gap: 4px;
    max-width: 100%;
    padding: 8px 11px;
    background: var(--mud-palette-surface);
    border: 1px solid var(--mud-palette-lines-inputs);
    border-radius: var(--mud-default-borderradius);
    cursor: pointer;
    font-family: 'IBM Plex Mono', ui-monospace, monospace;
    font-size: 0.8rem;
    line-height: 1;
    color: var(--mud-palette-text-primary);
    transition: border-color 0.16s, box-shadow 0.16s, background 0.16s;
    white-space: nowrap;
}

.mw-fs-chip:hover:not(.mw-fs-chip--disabled) {
    border-color: var(--mud-palette-primary);
}

.mw-fs-chip--open {
    border-color: var(--mud-palette-primary);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--mud-palette-primary) 24%, transparent);
}

.mw-fs-chip:focus-visible {
    outline: 2px solid var(--mud-palette-primary);
    outline-offset: 2px;
}

.mw-fs-chip--disabled {
    cursor: default;
    pointer-events: none;
    opacity: 0.55;
}

.mw-fs--dense .mw-fs-chip {
    padding: 5px 9px;
    font-size: 0.76rem;
    gap: 5px;
}

/* ── Chip content ── */
.mw-fs-seg-root { color: var(--mw-fs-root); font-weight: 600; }
.mw-fs-seg-nav  { color: var(--mw-fs-nav);  font-weight: 600; }
.mw-fs-seg-term { color: var(--mw-fs-term); font-weight: 600; }
.mw-fs-seg-boundary { color: var(--mw-fs-boundary); font-weight: 600; }

.mw-fs-sep {
    color: var(--mud-palette-text-secondary);
    font-size: 0.72rem;
    opacity: 0.7;
}

.mw-fs-bolt {
    color: var(--mw-fs-boundary);
    font-size: 0.72rem;
}

/* Flat-field chip: colored dot + the field's display name (in the sans body font). */
.mw-fs-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    flex-shrink: 0;
}

.mw-fs-dot--nav      { background: var(--mw-fs-nav); }
.mw-fs-dot--term     { background: var(--mw-fs-term); }
.mw-fs-dot--boundary { background: var(--mw-fs-boundary); }

.mw-fs-fieldname {
    font-family: var(--mud-typography-default-family);
    font-weight: 500;
    color: var(--mud-palette-text-primary);
}

.mw-fs-placeholder {
    color: var(--mud-palette-text-secondary);
    font-family: var(--mud-typography-default-family);
    font-style: italic;
}

.mw-fs-caret {
    color: var(--mud-palette-text-secondary);
    font-size: 0.66rem;
    margin-left: 2px;
    flex-shrink: 0;
}

/* ── Popover ── */
.mw-fs-popover {
    min-width: 300px !important;
    max-width: 680px !important;
}

.mw-fs-popover-content {
    padding: 10px 12px 12px;
}

.mw-fs-popover-header {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 9px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--mud-palette-lines-default);
    font-size: 0.8rem;
    font-weight: 600;
}

.mw-fs-popover-from { color: var(--mud-palette-text-secondary); font-weight: 500; }
.mw-fs-popover-root { color: var(--mw-fs-root); font-weight: 600; }

/* ── Flat-mode searchable list ── */
.mw-fs-search {
    width: 100%;
    margin-bottom: 6px;
}

.mw-fs-list {
    max-height: 340px;
    overflow-y: auto;
    margin: 0 -4px;
    padding: 0 4px;
}

.mw-fs-cat {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 9px 8px 4px;
    color: var(--mw-fs-cat, var(--mud-palette-text-secondary));
}

.mw-fs-cat::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
    background: var(--mw-fs-cat, var(--mud-palette-text-secondary));
    box-shadow: 0 0 7px color-mix(in srgb, var(--mw-fs-cat, transparent) 80%, transparent);
}

.mw-fs-cat--custom { --mw-fs-cat: var(--mud-palette-text-secondary); }
.mw-fs-cat--prop   { --mw-fs-cat: var(--mw-fs-term); }
.mw-fs-cat--event  { --mw-fs-cat: var(--mw-fs-boundary); }
.mw-fs-cat--nested { --mw-fs-cat: var(--mw-fs-root); }
.mw-fs-cat--ref    { --mw-fs-cat: var(--mw-fs-nav); }

.mw-fs-item {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 8px 9px;
    border-radius: 7px;
    cursor: pointer;
    font-size: 0.84rem;
    transition: background 0.12s;
}

.mw-fs-item:hover {
    background: var(--mud-palette-action-default-hover);
}

.mw-fs-item-name {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--mud-palette-text-primary);
}

.mw-fs-item-arrow {
    color: var(--mud-palette-text-secondary);
    font-size: 1rem;
    line-height: 1;
    flex-shrink: 0;
}

.mw-fs-item--selected {
    background: color-mix(in srgb, var(--mw-fs-term) 18%, transparent);
    box-shadow: inset 3px 0 0 var(--mw-fs-term);
}

.mw-fs-item--selected:hover {
    background: color-mix(in srgb, var(--mw-fs-term) 26%, transparent);
}

.mw-fs-item--selected .mw-fs-item-name {
    color: var(--mw-fs-term);
    font-weight: 600;
}

.mw-fs-empty {
    padding: 14px 9px;
    text-align: center;
    color: var(--mud-palette-text-secondary);
    font-size: 0.8rem;
    font-style: italic;
}

/* ── Type badge (chip + list rows) — the shared 3-color scheme ── */
.mw-fs-badge {
    font-size: 0.62rem;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 8px;
    white-space: nowrap;
    flex-shrink: 0;
    font-family: 'IBM Plex Mono', ui-monospace, monospace;
}

.mw-fs-badge--term     { color: var(--mw-fs-term);     background: color-mix(in srgb, var(--mw-fs-term) 15%, transparent); }
.mw-fs-badge--nav      { color: var(--mw-fs-nav);      background: color-mix(in srgb, var(--mw-fs-nav) 15%, transparent); }
.mw-fs-badge--boundary { color: var(--mw-fs-boundary); background: color-mix(in srgb, var(--mw-fs-boundary) 15%, transparent); }