/* =============================================================================
 * Tools Page Styles - Three-column workspace layout
 * Column 1: File tree sidebar | Column 2: Tool nav list | Column 3: Tool content
 * ============================================================================= */

/* Workspace layout */
.tools-workspace {
  display: flex;
  overflow: hidden;
  background: var(--workspace-bg-primary);
}

/* Column 2: Tool navigation panel (always visible) */
.tools-nav-panel {
  width: 260px;
  min-width: 180px;
  display: flex;
  flex-direction: column;
  background: var(--workspace-bg-secondary);
  border-right: 1px solid var(--workspace-border-default);
  overflow: hidden;
  transition:
    width 0.2s ease,
    min-width 0.2s ease;
}

/* Tools nav panel header */
.tools-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 50px;
  min-height: 50px;
  padding: 0 16px;
  background: var(--workspace-bg-secondary);
  border-bottom: 1px solid var(--workspace-border-default);
  flex-shrink: 0;
  box-sizing: border-box;
  position: relative;
}
.tools-nav-header-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.tools-nav-header-title i {
  font-size: 11px;
  color: var(--workspace-icon-primary);
}

/* Collapsed state for tools nav panel (width + panel-title handled by shared collapsible-panel.css) */
.tools-nav-panel.collapsed .tools-nav-list,
.tools-nav-panel.collapsed .tools-search-bar {
  display: none;
}
.tools-nav-panel.collapsed .tools-nav-header {
  padding: 0;
  justify-content: center;
  height: 100%;
  flex-direction: column;
  border-bottom: none;
}
.tools-nav-panel.collapsed .tools-nav-header-title {
  display: none;
}

/* Column 3: Tool content panel */
.tools-content-panel {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--workspace-bg-primary);
  overflow: hidden;
}

.tools-content-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative; /* For drop indicator positioning */
}

/* Placeholder (no tool selected) */
.tools-placeholder {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  gap: 12px;
}

.tools-placeholder i {
  font-size: 48px;
  opacity: 0.3;
}

.tools-placeholder p {
  font-size: 14px;
  margin: 0;
}

/* Search bar in nav panel (bottom position, like file tree) */
.tools-search-bar {
  position: relative;
  padding: 8px 12px;
  flex-shrink: 0;
  border-top: 1px solid var(--workspace-border-default);
  background: var(--workspace-bg-secondary);
}

.tools-search-bar .search-icon {
  position: absolute;
  left: 22px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 12px;
}

.tools-search-bar .search-input {
  width: 100%;
  padding: 7px 50px 7px 30px;
  font-size: 13px;
  border: 1px solid var(--workspace-border-default);
  border-radius: 6px;
  background: var(--workspace-bg-elevated, var(--workspace-bg-tertiary));
  color: var(--text-primary);
  transition: border-color 0.2s;
}

.tools-search-bar .search-input:focus {
  outline: none;
  border-color: var(--status-info, #6b8fb3);
}

.tools-search-bar .search-shortcut {
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 10px;
  background: var(--workspace-bg-tertiary);
  padding: 1px 5px;
  border-radius: 3px;
  border: 1px solid var(--workspace-border-default);
  pointer-events: none;
}

/* Sidebar divider */
.sidebar-divider {
  border: none;
  border-top: 1px solid var(--workspace-border-default);
  margin: 8px 12px;
}

/* Tool Navigation list */
.tools-nav-list {
  padding: 4px 0;
  flex: 1;
  overflow-y: auto;
}

.tools-nav-domain {
  margin-bottom: 2px;
}

.tools-nav-domain-header {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  padding: 5px 12px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: color 0.15s;
}

.tools-nav-domain-header:hover {
  color: var(--text-primary);
}

.tools-nav-domain-icon {
  font-size: 13px;
  width: 16px;
  text-align: center;
}

.tools-nav-domain-name {
  flex: 1;
  text-align: left;
}

.tools-nav-count {
  font-size: 10px;
  color: var(--text-muted);
  background: var(--workspace-bg-tertiary);
  padding: 1px 5px;
  border-radius: 8px;
}

.tools-nav-chevron {
  font-size: 9px;
  transition: transform 0.15s;
}

.tools-nav-domain-header.expanded .tools-nav-chevron {
  transform: rotate(90deg);
}

.tools-nav-items {
  display: none;
  padding: 1px 0;
}

.tools-nav-items.expanded {
  display: block;
}

.tools-nav-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px 4px 22px;
  color: var(--text-secondary);
  font-size: 13px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s;
  border-radius: 3px;
  margin: 1px 4px;
}

.tools-nav-item:hover {
  color: var(--text-primary);
  background: var(--workspace-bg-tertiary);
  text-decoration: none;
}

.tools-nav-item.active {
  color: var(--text-primary);
  background: var(--workspace-bg-elevated, var(--workspace-bg-tertiary));
  font-weight: 500;
}

.tools-nav-item-icon {
  font-size: 13px;
  width: 16px;
  text-align: center;
}

.tools-nav-item-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Iframe header bar */
.tools-iframe-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 16px;
  background: var(--workspace-bg-secondary);
  border-bottom: 1px solid var(--workspace-border-default);
  min-height: 36px;
  flex-shrink: 0;
}

.tools-iframe-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.tools-iframe-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.tools-iframe-open-btn,
.tools-iframe-close-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: none;
  border-radius: 4px;
  background: none;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s;
  text-decoration: none;
}

.tools-iframe-open-btn:hover,
.tools-iframe-close-btn:hover {
  color: var(--text-primary);
  background: var(--workspace-bg-tertiary);
}

/* Iframe */
.tools-iframe {
  flex: 1;
  width: 100%;
  border: none;
}

/* No-results message in search */
.tools-nav-no-results {
  padding: 16px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}