/* ==========================================
   青商会后台管理端 - 共享布局样式
   统一侧边栏 + 顶栏
   ========================================== */

/* Sidebar */
.sidebar {
  position: fixed;
  left: 0; top: 0; bottom: 0;
  width: var(--sidebar-width);
  background: var(--surface-sidebar);
  z-index: 100;
  display: flex;
  flex-direction: column;
}
.sidebar-logo {
  height: 56px;
  display: flex;
  align-items: center;
  padding: 0 var(--space-xl);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  flex-shrink: 0;
}
.sidebar-logo-text {
  font-family: var(--font-family-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-inverse);
  letter-spacing: 2px;
}
.sidebar-logo-text span {
  color: var(--text-accent);
}
.sidebar-nav {
  flex: 1;
  padding: var(--space-md) 0;
  overflow-y: auto;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 10px var(--space-xl);
  color: rgba(255,255,255,0.6);
  font-size: var(--text-base);
  cursor: pointer;
  transition: all var(--transition-fast);
  border-left: 3px solid transparent;
  text-decoration: none;
}
.nav-item:hover {
  color: var(--text-inverse);
  background: rgba(255,255,255,0.06);
}
.nav-item.active {
  color: var(--text-inverse);
  background: rgba(255,255,255,0.1);
  border-left-color: var(--color-accent-500);
  font-weight: 600;
}
.nav-item .nav-icon {
  width: 18px; height: 18px;
  flex-shrink: 0;
}
.sidebar-footer {
  padding: var(--space-base) var(--space-xl);
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.3);
}

/* Top bar */
.topbar {
  position: fixed;
  top: 0;
  left: var(--sidebar-width);
  right: 0;
  height: var(--topbar-height);
  background: var(--surface-card);
  border-bottom: var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-2xl);
  z-index: 90;
  box-shadow: var(--shadow-xs);
}
.breadcrumb {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}
.breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
}
.breadcrumb a:hover { color: var(--color-primary-500); }
.breadcrumb .sep { margin: 0 var(--space-sm); color: var(--text-tertiary); }
.breadcrumb .current { color: var(--text-primary); font-weight: 500; }
.topbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}
.notification-btn {
  position: relative;
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast);
  color: var(--text-secondary);
  background: transparent;
  border: none;
}
.notification-btn:hover { background: var(--color-neutral-100); }
.notification-dot {
  position: absolute; top: 6px; right: 6px;
  width: 8px; height: 8px;
  background: var(--state-error);
  border-radius: 50%;
  border: 2px solid var(--surface-card);
}
.user-avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-accent-500));
  display: flex; align-items: center; justify-content: center;
  color: white;
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
}
.user-info {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
}
.user-name {
  font-size: var(--text-sm);
  color: var(--text-primary);
  font-weight: 500;
}

/* Main content */
.main-content {
  margin-left: var(--sidebar-width);
  margin-top: var(--topbar-height);
  padding: var(--space-2xl);
  min-height: calc(100vh - var(--topbar-height));
}