.project-strip {
  position: relative;
  flex-shrink: 0;
  padding: 10px 12px 4px;
}

.project-switcher {
  width: 100%;
  min-width: 0;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) 16px;
  align-items: center;
  gap: 8px;
  padding: 8px 9px;
  border: 1px solid color-mix(in srgb, var(--border) 76%, var(--accent));
  border-radius: 8px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--card-bg) 92%, var(--accent)), var(--sidebar-bg));
  color: var(--text);
  cursor: pointer;
  text-align: left;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.03);
}

.project-switcher:hover,
.project-switcher[aria-expanded="true"] {
  border-color: color-mix(in srgb, var(--accent) 58%, var(--border));
  background: color-mix(in srgb, var(--card-bg) 86%, var(--accent));
}

.project-switcher-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--active);
  font-size: 1.1rem;
}

.project-switcher-text {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.project-switcher-text strong,
.project-switcher-text small {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.project-switcher-text strong {
  color: var(--text);
  font-size: 0.88rem;
}

.project-switcher-text small {
  color: var(--text3);
  font-size: 0.72rem;
}

.project-switcher-chevron {
  color: var(--text3);
  font-size: 0.72rem;
}

.project-menu {
  position: absolute;
  z-index: 45;
  top: calc(100% + 4px);
  left: 12px;
  right: 12px;
  display: grid;
  gap: 4px;
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--sidebar-bg);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.32);
}

.project-menu.hidden { display: none; }

.project-menu-item {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  padding: 7px 8px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: var(--text2);
  text-align: left;
  cursor: pointer;
}

.project-menu-item:hover {
  background: var(--hover);
  color: var(--text);
}

.project-menu-item.active {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  background: var(--active);
  color: var(--accent);
}

.project-menu-icon {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--card-bg) 82%, var(--accent));
}

.project-menu-copy {
  display: grid;
  gap: 1px;
  min-width: 0;
}

.project-menu-copy strong,
.project-menu-copy small {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.project-menu-copy strong { font-size: 0.82rem; }
.project-menu-copy small { color: var(--text3); font-size: 0.72rem; }

.project-upload-row {
  display: grid;
  margin-top: 8px;
}

.project-upload-row .tb-btn {
  width: 100%;
  justify-content: center;
}

.sidebar-search {
  position: relative;
  flex-shrink: 0;
  padding: 10px 16px 8px;
}

.sidebar-search input {
  width: 100%;
  padding: 7px 12px 7px 32px;
  font-size: 0.85rem;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 6px;
  color: var(--text);
  outline: none;
}

.sidebar-search input:focus { border-color: var(--accent); }

.search-icon {
  position: absolute;
  left: 26px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text3);
  font-size: 0.85rem;
  pointer-events: none;
}

#tree {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 8px 0 20px;
  user-select: none;
  overscroll-behavior: contain;
}

.tree-item { white-space: nowrap; }

.tree-row {
  display: flex;
  align-items: center;
  gap: 4px;
  width: max-content;
  min-width: calc(100% - 8px);
  padding: 4px 18px 4px 0;
  margin-right: 8px;
  border-radius: 0 6px 6px 0;
  color: var(--text2);
  font-size: 0.88rem;
  cursor: pointer;
  transition: background 0.1s ease, color 0.1s ease;
}

.tree-row:hover { background: var(--hover); color: var(--text); }
.tree-row[draggable="true"] { cursor: grab; }

.tree-item.dragging > .tree-row { opacity: 0.45; }

.tree-item.drop-target > .tree-row {
  background: var(--active);
  color: var(--accent);
  outline: 1px solid var(--accent);
  outline-offset: -1px;
}

.tree-row.active {
  background: var(--active);
  color: var(--accent);
  font-weight: 600;
}

.tree-toggle,
.tree-icon {
  flex-shrink: 0;
  text-align: center;
}

.tree-toggle {
  width: 20px;
  color: var(--text3);
  font-size: 0.65rem;
  transition: transform 0.2s ease;
}

.tree-item.expanded > .tree-row .tree-toggle { transform: rotate(90deg); }

.tree-icon { width: 20px; font-size: 0.84rem; }

.tree-name {
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tree-children { display: none; }
.tree-item.expanded > .tree-children { display: block; }