/* registry-admin-web 全局样式（M4-1b 视觉升级版）。
 *
 * 设计原则：
 * - 稳重、清晰、便于排障；不是营销官网。
 * - 层次感靠留白 + 细腻的边框与阴影表达，尽量不用花哨动画。
 * - 配色：浅蓝灰底 + 深邃 navy 侧栏 + 饱和靛蓝主色；状态 badge 对比度足够便于肉眼辨识。
 *
 * 维护约束：
 * - 所有 class 名保持稳定（.admin-shell / .page-main / .kpi-card / .panel / .data-table /
 *   .badge-xxx / .error-banner / .topbar-session / .topbar-lang / .btn），业务 HTML 与
 *   dashboardPage.js / usersPage.js 依赖它们；只改实现、不改命名。
 */

/* ============================================================
 * Design tokens
 * ============================================================ */

:root {
  /* Surface & 背景 */
  --color-bg: #f3f6fb;
  --color-bg-soft: #eef2f9;
  --color-surface: #ffffff;
  --color-surface-soft: #f8fafc;

  /* 边框与分隔 */
  --color-border: #e2e6ef;
  --color-border-strong: #cbd2de;

  /* 文本 */
  --color-text: #1a2332;
  --color-text-muted: #5b677c;
  --color-text-soft: #8a94a8;

  /* 品牌主色（管理后台点缀用，不大面积铺） */
  --color-primary: #3b5bdb;
  --color-primary-hover: #2f4ac9;
  --color-primary-soft: #e7ecfb;
  --color-accent: #7aa2f7;

  /* 侧栏配色（独立于亮色主区） */
  --color-sidebar-bg-top: #101a32;
  --color-sidebar-bg-bot: #0b1327;
  --color-sidebar-text: #c9d2e3;
  --color-sidebar-text-soft: #7c8699;
  --color-sidebar-border: rgba(255, 255, 255, 0.06);

  /* 状态色（语义色） */
  --color-success: #15803d;
  --color-success-soft: #dcfce7;
  --color-warn: #b45309;
  --color-warn-soft: #fef3c7;
  --color-offline: #475569;
  --color-offline-soft: #e2e8f0;
  --color-unknown: #52606d;
  --color-unknown-soft: #edf1f5;

  --color-danger-bg: #fef3f3;
  --color-danger-border: #f4c7c7;
  --color-danger-text: #991b1b;
  --color-danger-accent: #dc2626;

  /* 间距 / 圆角 / 阴影 */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 40px;

  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-full: 999px;

  --shadow-xs: 0 1px 3px rgba(16, 24, 40, 0.04);
  --shadow-sm: 0 2px 8px rgba(16, 24, 40, 0.05), 0 1px 3px rgba(16, 24, 40, 0.03);
  --shadow-md: 0 8px 24px rgba(16, 24, 40, 0.06), 0 4px 8px rgba(16, 24, 40, 0.04);
  --shadow-card: var(--shadow-sm);

  --transition-fast: 120ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
}

/* ============================================================
 * Base
 * ============================================================ */

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.55;
  color: var(--color-text);
  background:
    radial-gradient(ellipse 80% 60% at 100% 0%, #e8eefb 0%, transparent 60%),
    radial-gradient(ellipse 70% 50% at 0% 100%, #eef3fa 0%, transparent 55%),
    var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

button {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================================
 * Layout：侧栏 + 顶栏 + 主内容
 * ============================================================ */

.admin-shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  grid-template-rows: 60px 1fr;
  grid-template-areas:
    "sidebar topbar"
    "sidebar main";
  min-height: 100vh;
}

/* ------------------------------------------------------------
 * Sidebar
 * ------------------------------------------------------------ */

#admin-sidebar {
  grid-area: sidebar;
  background: linear-gradient(180deg, var(--color-sidebar-bg-top) 0%, var(--color-sidebar-bg-bot) 100%);
  color: var(--color-sidebar-text);
  padding: var(--space-5) 0 var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  box-shadow: 1px 0 0 var(--color-sidebar-border), 4px 0 12px rgba(16, 24, 40, 0.04);
}

#admin-sidebar .sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 var(--space-5) var(--space-4);
  border-bottom: 1px solid var(--color-sidebar-border);
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

#admin-sidebar .sidebar-brand .brand-logo {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  flex: 0 0 auto;
  box-shadow: 0 2px 8px rgba(59, 91, 219, 0.4);
}

#admin-sidebar .sidebar-brand .brand-logo svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

#admin-sidebar .sidebar-nav {
  display: flex;
  flex-direction: column;
  padding: var(--space-3) var(--space-2) 0;
  gap: 2px;
  flex: 1 1 auto;
}

#admin-sidebar .sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  margin: 0;
  color: var(--color-sidebar-text);
  border-radius: var(--radius);
  font-size: 14px;
  position: relative;
  transition: background var(--transition-fast), color var(--transition-fast);
}

#admin-sidebar .sidebar-nav a .nav-icon {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.85;
}

#admin-sidebar .sidebar-nav a:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
  text-decoration: none;
}

#admin-sidebar .sidebar-nav a.active {
  background: linear-gradient(90deg, rgba(122, 162, 247, 0.18) 0%, rgba(122, 162, 247, 0.04) 100%);
  color: #ffffff;
  font-weight: 500;
}

#admin-sidebar .sidebar-nav a.active::before {
  content: "";
  position: absolute;
  left: -2px;
  top: 6px;
  bottom: 6px;
  width: 3px;
  border-radius: 2px;
  background: var(--color-accent);
}

#admin-sidebar .sidebar-nav a.active .nav-icon {
  opacity: 1;
  color: var(--color-accent);
}

#admin-sidebar .sidebar-footer {
  padding: var(--space-3) var(--space-5);
  color: var(--color-sidebar-text-soft);
  font-size: 11px;
  border-top: 1px solid var(--color-sidebar-border);
}

/* ------------------------------------------------------------
 * Topbar
 * ------------------------------------------------------------ */

#admin-topbar {
  grid-area: topbar;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0 var(--space-5);
  gap: var(--space-3);
  backdrop-filter: saturate(1.2);
}

.topbar-divider {
  width: 1px;
  height: 22px;
  background: var(--color-border);
  margin: 0 var(--space-1);
}

.topbar-lang {
  display: inline-flex;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-surface-soft);
}

.topbar-lang button {
  background: transparent;
  color: var(--color-text-muted);
  border: none;
  padding: 5px 12px;
  font-size: 13px;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.topbar-lang button:hover {
  color: var(--color-text);
  background: rgba(59, 91, 219, 0.06);
}

.topbar-lang button + button {
  border-left: 1px solid var(--color-border);
}

.topbar-lang button.active {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-weight: 600;
}

.btn {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: 5px 12px;
  border-radius: var(--radius);
  font-size: 13px;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast),
    color var(--transition-fast), box-shadow var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn:hover {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: var(--shadow-xs);
}
.btn:active {
  transform: translateY(1px);
}
.btn.btn-primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
}
.btn.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: #ffffff;
}
.btn.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--color-text-muted);
}
.btn.btn-ghost:hover {
  background: var(--color-bg-soft);
  color: var(--color-text);
  box-shadow: none;
}
.btn.btn-sm {
  padding: 3px 9px;
  font-size: 12.5px;
}

/* ============================================================
 * Main content
 * ============================================================ */

.page-main {
  grid-area: main;
  padding: var(--space-5) var(--space-6);
  max-width: 1400px;
}

.page-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-1);
}

.page-title {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-1);
  color: var(--color-text);
}

.page-subtitle {
  color: var(--color-text-muted);
  margin: 0 0 var(--space-5);
  font-size: 13px;
}

.placeholder {
  background: var(--color-surface);
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius);
  padding: var(--space-5);
  color: var(--color-text-muted);
}

/* ============================================================
 * Error banner
 * ============================================================ */

.error-banner {
  background: var(--color-danger-bg);
  border: 1px solid var(--color-danger-border);
  border-left: 4px solid var(--color-danger-accent);
  color: var(--color-danger-text);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 13px;
  box-shadow: var(--shadow-xs);
}

.error-banner .error-icon {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  color: var(--color-danger-accent);
}

.error-banner .error-code {
  font-family: var(--font-mono);
  font-weight: 600;
  padding: 2px 6px;
  background: rgba(220, 38, 38, 0.1);
  border-radius: var(--radius-sm);
  font-size: 12px;
}

.error-banner .error-close {
  margin-left: auto;
  background: transparent;
  border: none;
  color: inherit;
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  padding: 0 6px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}
.error-banner .error-close:hover {
  background: rgba(220, 38, 38, 0.1);
}

/* ============================================================
 * KPI grid
 * ============================================================ */

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.kpi-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--color-accent) 0%, var(--color-primary) 100%);
  opacity: 0;
  transition: opacity var(--transition);
}

.kpi-card:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-strong);
}
.kpi-card:hover::before {
  opacity: 1;
}

.kpi-card .kpi-label {
  color: var(--color-text-soft);
  font-size: 11px;
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
}

.kpi-card .kpi-value {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.kpi-card .kpi-hint {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

/* ============================================================
 * Panels
 * ============================================================ */

.panel-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.panel-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  background: rgba(248, 250, 252, 0.6);
  backdrop-filter: blur(8px);
  font-weight: 600;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  color: var(--color-text);
}

.panel-body {
  padding: 0;
}

.panel .meta-line {
  padding: var(--space-2) var(--space-4);
  color: var(--color-text-muted);
  font-size: 12px;
  border-bottom: 1px solid var(--color-border);
}

/* ============================================================
 * Data table
 * ============================================================ */

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

table.data-table th,
table.data-table td {
  text-align: left;
  padding: 10px var(--space-4);
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

table.data-table th {
  background: var(--color-surface-soft);
  font-weight: 600;
  color: var(--color-text-soft);
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

table.data-table tbody tr {
  transition: background var(--transition-fast);
}

table.data-table tbody tr:hover {
  background: rgba(59, 91, 219, 0.04);
}

table.data-table tbody tr:last-child td {
  border-bottom: none;
}

table.data-table td.mono,
.mono {
  font-family: var(--font-mono);
}

table.data-table td.mono {
  font-size: 12px;
  color: var(--color-text-muted);
}

table.data-table .empty-row td,
table.data-table .loading-row td {
  text-align: center;
  color: var(--color-text-soft);
  padding: var(--space-5);
  font-size: 13px;
}

table.data-table .row-clickable {
  cursor: pointer;
}
table.data-table .row-clickable:hover {
  background: rgba(59, 91, 219, 0.07);
}

/* ============================================================
 * Status badges
 * ============================================================ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 9px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.6;
  border: 1px solid transparent;
  white-space: nowrap;
}

.badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.8;
}

.badge-active {
  background: var(--color-success-soft);
  color: var(--color-success);
  border-color: rgba(21, 128, 61, 0.22);
}

.badge-stale {
  background: var(--color-warn-soft);
  color: var(--color-warn);
  border-color: rgba(180, 83, 9, 0.22);
}

.badge-offline {
  background: var(--color-offline-soft);
  color: var(--color-offline);
  border-color: rgba(71, 85, 105, 0.22);
}

.badge-unknown {
  background: var(--color-unknown-soft);
  color: var(--color-unknown);
  border-color: rgba(82, 96, 109, 0.22);
}

.badge-plain::before {
  display: none;
}
.badge-plain {
  background: var(--color-bg-soft);
  color: var(--color-text-muted);
  border-color: var(--color-border);
  font-family: var(--font-mono);
  font-size: 11.5px;
  padding: 2px 8px;
}

/* ============================================================
 * Storage page（M11-4）
 * ============================================================ */

.storage-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-3);
}

.storage-card {
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-3);
}

.storage-card-label {
  color: var(--color-text-soft);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.storage-card-value {
  color: var(--color-text);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.2;
}

.storage-card-hint {
  margin-top: 6px;
  color: var(--color-text-muted);
  font-size: 12px;
}

.storage-actions {
  display: inline-flex;
  gap: 6px;
}

/* ============================================================
 * Form controls (搜索 / 筛选 / 分页共用)
 * ============================================================ */

.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  margin-bottom: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-xs);
}

.form-field {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.form-field-inline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.form-label {
  font-size: 11.5px;
  color: var(--color-text-soft);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 500;
}

.form-input,
.form-select {
  font-family: inherit;
  font-size: 13px;
  padding: 6px 10px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  min-width: 0;
}

.form-input:focus,
.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 91, 219, 0.15);
}

.form-input {
  min-width: 200px;
}

.form-select {
  min-width: 140px;
  background-image: linear-gradient(45deg, transparent 50%, var(--color-text-soft) 50%),
    linear-gradient(-45deg, transparent 50%, var(--color-text-soft) 50%);
  background-position: calc(100% - 14px) 50%, calc(100% - 9px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 28px;
  appearance: none;
  -webkit-appearance: none;
}

/* ============================================================
 * Pagination
 * ============================================================ */

.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-soft);
  gap: var(--space-3);
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--color-text-muted);
}

.pagination .pagination-info .mono {
  color: var(--color-text);
  font-weight: 500;
}

.pagination .pagination-controls {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.pagination .pagination-controls button {
  min-width: 32px;
  padding: 4px 8px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  cursor: pointer;
  font-size: 13px;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}
.pagination .pagination-controls button:hover:not(:disabled) {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.pagination .pagination-controls button:disabled {
  color: var(--color-text-soft);
  cursor: not-allowed;
  background: var(--color-surface-soft);
}
.pagination .pagination-controls .page-indicator {
  padding: 0 var(--space-2);
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}

/* ============================================================
 * Drawer（详情抽屉，Users 页 M4-2 使用）
 * ============================================================ */

.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(17, 24, 39, 0.35);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
  z-index: 900;
}
.drawer-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(520px, 100vw);
  background: var(--color-surface);
  border-left: 1px solid var(--color-border);
  box-shadow: -8px 0 24px rgba(16, 24, 40, 0.12);
  transform: translateX(100%);
  transition: transform var(--transition);
  display: flex;
  flex-direction: column;
  z-index: 901;
}
.drawer.open {
  transform: translateX(0);
}

.drawer-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.drawer-header .drawer-title {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
  color: var(--color-text);
}

.drawer-body {
  padding: var(--space-4) var(--space-5);
  overflow-y: auto;
  flex: 1 1 auto;
}

.drawer-footer {
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-soft);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-2);
}

/* 抽屉内"危险操作"分区（M6-3d）：顶部分隔线 + 弱红背景色，与上方详情键值对视觉分离。
   纵向堆叠：提示段 → 状态/错误消息 → 危险按钮。按钮默认危险红，鼠标悬停加深。 */
.drawer-actions {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px dashed var(--color-border);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
}
.drawer-actions-hint {
  margin: 0;
  font-size: 12px;
  line-height: 1.55;
  color: var(--color-text-soft);
}
.drawer-actions-msg {
  min-height: 18px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--color-text-soft);
}
.drawer-actions-msg.is-success,
.drawer-actions-msg.is-warning,
.drawer-actions-msg.is-error {
  font-weight: 600;
}
.drawer-actions-msg.is-success {
  color: #15803d;
}
.drawer-actions-msg.is-warning {
  color: #b45309;
}
.drawer-actions-msg.is-error {
  color: #b42318;
}
.btn.btn-danger {
  background: #d92d20;
  border-color: #d92d20;
  color: #ffffff;
}
.btn.btn-danger:hover {
  background: #b42318;
  border-color: #b42318;
  color: #ffffff;
}
.btn.btn-danger:disabled {
  background: #f2b8b3;
  border-color: #f2b8b3;
  color: #ffffff;
  cursor: not-allowed;
  box-shadow: none;
}

/* ---------------------------------------------------------------------------
 * Confirm Dialog（M6-3d）：全站通用危险操作二次确认弹窗。
 * 由 assets/js/uiConfirm.js 驱动，caller 侧零样式负担。
 * 视觉：半透明黑底 + 居中卡片 + 底部右对齐两按钮（取消 / 确认）。
 * ------------------------------------------------------------------------- */
.confirm-modal-root {
  position: fixed;
  inset: 0;
  z-index: 1000;
}
.confirm-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scaleUp {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(0.95); }
  100% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

.confirm-modal {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90%;
  max-width: 400px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15), 0 4px 12px rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: scaleUp 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.confirm-modal-header {
  padding: var(--space-5) var(--space-5) var(--space-3);
}

.confirm-modal-title {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
}

.confirm-modal-body {
  padding: 0 var(--space-5) var(--space-4);
  overflow-y: auto;
}

.confirm-modal-message {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-muted);
  white-space: pre-wrap;
}

.confirm-modal-footer {
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface-soft);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
}

/* 抽屉内分节标题（基本信息 / 排障信息 等） */
.drawer-section-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-soft);
  margin: var(--space-4) 0 var(--space-2);
  padding-bottom: 6px;
  border-bottom: 1px solid var(--color-border);
}
.drawer-section-title:first-of-type {
  margin-top: 0;
}

/* 详情键值对字段列表 */
.kv-list {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 0 var(--space-4);
  font-size: 13px;
}
.kv-list dt,
.kv-list dd {
  padding: 10px 0;
  border-bottom: 1px dashed var(--color-border);
  min-height: 20px;
  display: flex;
  align-items: center;
}
.kv-list dt {
  color: var(--color-text-soft);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.04em;
}
.kv-list dd {
  margin: 0;
  color: var(--color-text);
  word-break: break-all;
  /* 允许 dd 里的 <pre>（verify_error）撑满而不受 flex 束缚 */
  display: block;
  padding-top: 10px;
}
.kv-list dt:last-of-type,
.kv-list dd:last-of-type {
  border-bottom: none;
}
.kv-list dd.mono {
  font-family: var(--font-mono);
  font-size: 12.5px;
}

/* ============================================================
 * Tab bar（M15-3 Risk & Audit 页面 Tab 切换）
 * ============================================================ */

.tab-bar {
  display: flex;
  gap: var(--space-1);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-4);
}
.tab-btn {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.tab-btn:hover {
  color: var(--color-primary);
}
.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* ============================================================
 * Responsive
 * ============================================================ */

@media (max-width: 960px) {
  .admin-shell {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto 1fr;
    grid-template-areas:
      "sidebar"
      "topbar"
      "main";
  }
  #admin-sidebar {
    flex-direction: row;
    padding: var(--space-3);
    overflow-x: auto;
    gap: var(--space-2);
    box-shadow: none;
  }
  #admin-sidebar .sidebar-brand {
    border-bottom: none;
    padding: 0 var(--space-3);
    flex: 0 0 auto;
  }
  #admin-sidebar .sidebar-nav {
    flex-direction: row;
    padding: 0;
    gap: 4px;
  }
  #admin-sidebar .sidebar-nav a {
    white-space: nowrap;
  }
  #admin-sidebar .sidebar-nav a.active::before {
    display: none;
  }
  #admin-sidebar .sidebar-footer {
    display: none;
  }
  .panel-row {
    grid-template-columns: 1fr;
  }
  .page-main {
    padding: var(--space-4);
  }

  .storage-actions {
    display: flex;
    flex-wrap: wrap;
  }
}