/*
 * Tree View Component CSS — jsgui3-html
 *
 * Target class: .jsgui-tree
 * Features: expand/collapse, indent, icons, selection, hover
 */

/* ── Container ── */
.jsgui-tree {
    font-family: var(--j-font-sans);
    font-size: var(--j-text-sm);
    color: var(--j-fg);
    -webkit-user-select: none;
    user-select: none;
}

/* ── Tree node ── */
.jsgui-tree .tree-node {
    display: flex;
    flex-direction: column;
}

.jsgui-tree .tree-node-row {
    display: flex;
    align-items: center;
    gap: var(--j-space-1, 4px);
    padding: var(--j-space-1, 3px) var(--j-space-2, 6px);
    border-radius: var(--j-radius-sm, 3px);
    cursor: pointer;
    transition: background var(--j-duration-fast) var(--j-ease-out);
}

.jsgui-tree .tree-node-row:hover {
    background: var(--j-bg-subtle, #f8fafc);
}

.jsgui-tree .tree-node-row.is-selected {
    background: color-mix(in srgb, var(--j-primary) 10%, transparent);
    color: var(--j-primary);
}

/* ── Toggle arrow ── */
.jsgui-tree .tree-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    font-size: 10px;
    color: var(--j-fg-muted);
    transition: transform var(--j-duration-fast) var(--j-ease-out);
}

.jsgui-tree .tree-toggle.is-open {
    transform: rotate(90deg);
}

.jsgui-tree .tree-toggle.is-leaf {
    visibility: hidden;
}

/* ── Node icon ── */
.jsgui-tree .tree-icon {
    display: inline-flex;
    font-size: 1em;
    margin-right: var(--j-space-1, 2px);
}

/* ── Node label ── */
.jsgui-tree .tree-label {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    line-height: 1.4;
}

/* ── Indentation ── */
.jsgui-tree .tree-children {
    padding-left: var(--j-space-4, 16px);
}

.jsgui-tree .tree-children.is-collapsed {
    display: none;
}

/* ── Focus ── */
.jsgui-tree .tree-node-row:focus-visible {
    outline: 2px solid var(--j-primary);
    outline-offset: -2px;
}

/* ══════════════════════════════════════════
   Reduced Motion
   ══════════════════════════════════════════ */

@media (prefers-reduced-motion: reduce) {

    .jsgui-tree .tree-node-row,
    .jsgui-tree .tree-toggle {
        transition: none;
    }
}

.jsgui-tree .tree-node-row,
.jsgui-tree .tree-label {
    color: inherit;
}

:is(.jsgui-dark-mode, [data-theme="dark"]) .jsgui-tree {
    color: var(--j-fg, #e8e8f0);
}