/* ===== 算力星核管理后台 - 布局 ===== */

/* --- 整体布局 --- */
.app-layout { display: flex; min-height: 100vh; }

/* --- 侧边栏 --- */
.sidebar {
  width: var(--sidebar-w);
  height: 100vh;
  position: fixed;
  left: 0; top: 0;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
  transition: width 0.2s;
}
.sidebar.collapsed { width: var(--sidebar-collapsed-w); }
.sidebar.collapsed .sidebar-logo .title,
.sidebar.collapsed .nav-section-title,
.sidebar.collapsed .nav-item span:not(.nav-icon),
.sidebar.collapsed .nav-item .badge,
.sidebar.collapsed .sidebar-footer .info { display: none; }

.sidebar-logo {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--border);
}
.sidebar-logo .icon {
  width: 32px; height: 32px;
  background: var(--accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: var(--bg-primary);
  flex-shrink: 0;
}
.sidebar-logo .title { font-size: 15px; font-weight: 600; letter-spacing: -0.3px; white-space: nowrap; }
.sidebar-logo .title span { color: var(--accent); }

.sidebar-nav { flex: 1; padding: 12px 10px; }
.nav-section { margin-bottom: 20px; }
.nav-section-title {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-muted);
  padding: 0 10px;
  margin-bottom: 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
  transition: all 0.15s;
  margin-bottom: 2px;
  text-decoration: none;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  font-family: var(--font-sans);
}
.nav-item:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.nav-item.active { background: var(--accent-glow); color: var(--accent); font-weight: 500; }
.nav-item .nav-icon { font-size: 16px; width: 20px; text-align: center; flex-shrink: 0; }
.nav-item .badge {
  margin-left: auto;
  font-size: 11px;
  background: var(--red);
  color: #fff;
  padding: 1px 6px;
  border-radius: 10px;
  font-weight: 600;
  min-width: 20px;
  text-align: center;
}
.nav-item .badge.warn { background: var(--yellow); color: #000; }

.sidebar-footer {
  padding: 12px 10px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-footer .avatar {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--bg-primary);
  flex-shrink: 0;
}
.sidebar-footer .info { flex: 1; min-width: 0; }
.sidebar-footer .name { font-size: 12px; font-weight: 500; }
.sidebar-footer .role { font-size: 11px; color: var(--text-muted); }

/* --- 主内容区 --- */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-width: 0;
  transition: margin-left 0.2s;
}
.sidebar.collapsed ~ .main { margin-left: var(--sidebar-collapsed-w); }

.header {
  height: var(--header-h);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-breadcrumb { font-size: 13px; color: var(--text-secondary); }
.header-breadcrumb span { color: var(--text-primary); }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: 12px; }

.content { padding: 24px; }

/* --- 页面容器 --- */
.page { display: none; }
.page.active { display: block; }

/* --- 折叠按钮 --- */
.collapse-btn {
  position: absolute;
  right: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px; height: 24px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  z-index: 101;
}
.collapse-btn:hover { background: var(--accent); color: var(--bg-primary); }

@media (max-width: 768px) {
  .sidebar { width: var(--sidebar-collapsed-w); }
  .sidebar .sidebar-logo .title,
  .sidebar .nav-section-title,
  .sidebar .nav-item span:not(.nav-icon),
  .sidebar .nav-item .badge,
  .sidebar .sidebar-footer .info { display: none; }
  .main { margin-left: var(--sidebar-collapsed-w); }
}