/* B"H - WORKSPACE TREE STYLES */
.workspace-header { 
    display: flex; align-items: center; justify-content: space-between; 
    padding: 12px; font-weight: 700; cursor: pointer; user-select: none; 
    border-radius: var(--radius-sm); transition: all var(--timing-fast);
    position: relative; overflow: hidden;
    letter-spacing: 1px;
    background-color: #252a4a;
    border: 1px solid rgba(0, 246, 255, 0.4);
    margin-bottom: 8px; 
    color: var(--color-text-secondary);
}
.workspace-header:hover { 
    background-color: var(--color-border); 
    color: var(--neon-cyan);
    border-color: var(--neon-cyan);
}

/* Locked State Styles */
.workspace-header.locked {
    border-color: var(--neon-magenta);
    background-color: rgba(255, 0, 255, 0.05);
}
.workspace-header.locked:hover {
    box-shadow: 0 0 15px var(--glow-magenta);
}

.resume-badge {
    animation: pulse-resume 2s infinite;
}

@keyframes pulse-resume {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(0.95); }
}

.workspace-header-title { display: flex; align-items: center; gap: 10px; flex-grow: 1; overflow: hidden; }
.workspace-header-title span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.tree-item { display: flex; flex-direction: column; align-items: stretch; position: relative; user-select: none; }
.tree-item-name-wrap {
    display: flex; align-items: center; flex-grow: 1;
    min-height: 40px; cursor: pointer; padding: 6px 8px;
    border-radius: var(--radius-sm); transition: background-color var(--timing-fast);
    border: 1px solid transparent; /* Prepare for selection border */
}
.tree-item > .tree-item-name-wrap:hover { background-color: var(--color-bg-tertiary); }
.tree-item > .tree-item-name-wrap:hover .tree-item-name { color: var(--neon-lime); transform: translateX(4px); }

/* B"H - SELECTION STATE */
/* This was missing! Now the selection will be visible. */
.tree-item.selected > .tree-item-name-wrap {
    background-color: rgba(0, 246, 255, 0.15) !important;
    border-color: var(--neon-cyan) !important;
}
.tree-item.selected > .tree-item-name-wrap .tree-item-name {
    color: var(--neon-cyan) !important;
    font-weight: bold;
}

.tree-item-name { 
    margin-left: 8px; white-space: nowrap; font-size: 0.95em;
    font-weight: 600; color: var(--color-text-primary); transition: all var(--timing-fast) ease;
}

/* B"H - THE ROTATION OF THE ARROW */
.tree-item-arrow {
    display: inline-block;
    width: 12px;
    text-align: center;
    font-size: 0.8em;
    color: var(--color-text-tertiary);
    margin-right: 4px;
    transition: transform 0.2s ease;
}

.tree-item.expanded > .tree-item-name-wrap .tree-item-arrow {
    transform: rotate(90deg);
    color: var(--neon-cyan);
}

.tree-item > ul {
    margin: 4px 0 4px 15px; padding-left: 10px;
    border-left: 1px solid rgba(0, 246, 255, 0.2); list-style: none; min-width: max-content;
}