/* ============================================================
   Tool Sidebar — 统一工具页可收起左侧导航
   ============================================================ */

:root {
  --ts-width: 220px;
  --ts-collapsed-width: 64px;
  --ts-bg: #f4f4f0;
  --ts-border: #bccac1;
  --ts-active-bg: rgba(7, 168, 122, 0.1);
  --ts-active-color: #006c4d;
  --ts-text: #3d4a43;
  --ts-hover-bg: #e9e8e4;
}

/* Layout wrapper */
.tool-layout {
  display: flex;
  flex: 1;
  min-width: 0;
}

.tool-main {
  flex: 1;
  min-width: 0;
  overflow-x: hidden;
}

/* Sidebar base */
.tool-sidebar {
  position: fixed;
  top: 64px; /* matches sticky nav height */
  left: 0;
  bottom: 0;
  width: var(--ts-width);
  background: var(--ts-bg);
  border-right: 1px solid var(--ts-border);
  display: flex;
  flex-direction: column;
  z-index: 40;
  transform: translateX(-100%);
  transition: transform 0.25s ease, width 0.25s ease;
}

.tool-sidebar.open {
  transform: translateX(0);
}

.tool-sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  z-index: 30;
  display: none;
}

.tool-sidebar-overlay.open {
  display: block;
}

/* Desktop */
@media (min-width: 1024px) {
  .tool-sidebar {
    position: sticky;
    top: 64px;
    align-self: flex-start;
    height: calc(100vh - 64px);
    transform: none;
  }

  .tool-sidebar-overlay {
    display: none !important;
  }

  .tool-sidebar-toggle,
  #mobile-sidebar-toggle {
    display: none !important;
  }
}

/* Collapsed state (desktop only) */
.tool-sidebar.collapsed {
  width: var(--ts-collapsed-width);
}

.tool-sidebar.collapsed .ts-brand-text,
.tool-sidebar.collapsed .ts-label,
.tool-sidebar.collapsed .ts-section-title {
  display: none;
}

.tool-sidebar.collapsed .ts-link {
  justify-content: center;
  padding-left: 0;
  padding-right: 0;
}

.tool-sidebar.collapsed .ts-collapse-btn {
  transform: rotate(180deg);
}

/* Header */
.ts-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border-bottom: 1px solid var(--ts-border);
  flex-shrink: 0;
}

.ts-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ts-active-color);
  text-decoration: none;
  font-weight: 700;
  overflow: hidden;
  white-space: nowrap;
}

.ts-brand:hover {
  text-decoration: none;
  color: var(--ts-active-color);
}

.ts-logo {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--ts-active-color);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: "Source Serif 4", serif;
  font-size: 18px;
  flex-shrink: 0;
}

.ts-brand-text {
  font-family: "Source Serif 4", serif;
  font-size: 16px;
}

.ts-collapse-btn {
  display: none;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--ts-text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease, transform 0.25s ease;
}

.ts-collapse-btn:hover {
  background: var(--ts-hover-bg);
}

@media (min-width: 1024px) {
  .ts-collapse-btn {
    display: inline-flex;
  }
}

/* Nav */
.ts-nav {
  flex: 1;
  padding: 12px 12px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ts-section-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--ts-text);
  opacity: 0.6;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 16px 12px 4px;
}

.ts-divider {
  height: 1px;
  background: var(--ts-border);
  margin: 12px 8px;
}

.ts-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--ts-text);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.2s ease, color 0.2s ease;
  overflow: hidden;
  white-space: nowrap;
}

.ts-link:hover {
  background: var(--ts-hover-bg);
  color: var(--ts-active-color);
  text-decoration: none;
}

.ts-link.active {
  background: var(--ts-active-bg);
  color: var(--ts-active-color);
  font-weight: 700;
  border-left: 3px solid var(--ts-active-color);
  margin-left: -3px;
}

.ts-link .material-symbols-outlined {
  font-size: 22px;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}

.ts-label {
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Mobile toggle button (in topnav) */
.tool-sidebar-toggle,
#mobile-sidebar-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--ts-text);
  cursor: pointer;
  transition: background 0.2s ease;
}

.tool-sidebar-toggle:hover,
#mobile-sidebar-toggle:hover {
  background: #e9e8e4;
}

/* Print */
@media print {
  .tool-sidebar,
  .tool-sidebar-overlay,
  .tool-sidebar-toggle,
  #mobile-sidebar-toggle {
    display: none !important;
  }
}

/* Mobile: hide the separate tool sidebar to avoid overlap with top nav */
@media (max-width: 1023px) {
  .tool-sidebar,
  .tool-sidebar-overlay,
  .tool-sidebar-toggle,
  #mobile-sidebar-toggle {
    display: none !important;
  }
  .tool-layout {
    display: block;
  }
}