/* base-sidebar.css
   사이드바 탐색기 셸 · 접기 토글 · 상단 퀵링크 · 탐색기 헤더
   (분할 전 base.css 의 142~291 줄 — 선언 순서 그대로 옮김) */
/* Sidebar explorer layout */
.app-layout {
  display: flex;
  width: 100%;
  flex: 1 0 auto;
  min-height: 0;
}

.app-layout .site-content {
  flex: 1 1 auto;
  min-width: 0;
  padding: 20px 24px;
}

.sidebar-explorer {
  width: 280px;
  min-width: 280px;
  border-right: 1px solid var(--border);
  background: var(--card);
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow-y: auto;
  position: relative;
  transition: width .2s ease, min-width .2s ease, padding .2s ease;
}

.sidebar-collapse-toggle {
  align-self: flex-end;
  width: 28px;
  height: 28px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
}

.sidebar-collapse-toggle:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.app-layout.sidebar-collapsed .sidebar-explorer {
  width: 52px;
  min-width: 52px;
  padding: 14px 8px;
}

.app-layout.sidebar-collapsed .sidebar-top-links,
.app-layout.sidebar-collapsed .sidebar-main-explorer,
.app-layout.sidebar-collapsed .sidebar-bottom-tools {
  display: none;
}

.sidebar-top-links {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
  padding: 10px;
}

.sidebar-section-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 8px;
}

.sidebar-quick-link {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
}

.sidebar-quick-link:hover {
  background: rgba(127, 127, 127, 0.12);
  color: var(--brand);
}

.sidebar-quick-link-with-icon {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.sidebar-quick-link-icon {
  width: 16px;
  height: 16px;
  opacity: 0.9;
  flex: 0 0 auto;
}

.sidebar-main-explorer {
  flex: 1 1 auto;
  min-height: 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
  padding: 8px;
  display: flex;
  flex-direction: column;
}

.sidebar-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}

.sidebar-explorer-toggle {
  width: 100%;
  border: 1px solid transparent;
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  cursor: pointer;
}

.sidebar-explorer-toggle:hover {
  background: rgba(127, 127, 127, 0.12);
}

.sidebar-explorer-toggle-icon {
  color: var(--muted);
  font-size: 12px;
  transition: transform .2s ease;
}

.sidebar-main-explorer[data-expanded="true"] .sidebar-explorer-toggle-icon {
  transform: rotate(90deg);
}

.sidebar-main-explorer-body {
  margin-top: 8px;
  min-height: 0;
}