:root {
  --sidebar-bg: #1e293b;
  --sidebar-active: #0f172a;
  --sidebar-hover: #334155;
  --accent: #e11d48;
  --accent-blue: #2563eb;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --info: #0891b2;
  --text-dark: #1e293b;
  --text-light: #64748b;
  --bg-light: #f1f5f9;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --radius: 10px;
  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
  --shadow: 0 1px 3px 0 rgba(0,0,0,0.08), 0 1px 2px -1px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.08);
}

* { margin:0; padding:0; box-sizing:border-box; }

body {
  font-family: "Microsoft YaHei","PingFang SC",system-ui,-apple-system,sans-serif;
  background: var(--bg-light);
  color: var(--text-dark);
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

/* ========== 布局 ========== */
.app-container { display:flex; min-height:100vh; }

.sidebar {
  width: 220px;
  background: var(--sidebar-bg);
  color: #fff;
  position: fixed;
  height: 100vh;
  overflow-y: auto;
  z-index: 1000;
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  text-align: center;
}

.sidebar-header .logo-icon {
  font-size: 28px;
  margin-bottom: 8px;
}

.system-title {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.5px;
}

.system-subtitle {
  font-size: 11px;
  color: rgba(255,255,255,0.45);
  margin-top: 2px;
  letter-spacing: 1px;
}

.sidebar-nav { padding: 8px 0; flex: 1; }

.nav-group { margin-bottom: 2px; }

.nav-group-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  color: rgba(255,255,255,0.5);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  cursor: pointer;
  user-select: none;
  border-radius: 6px;
  margin: 0 8px;
  transition: all 0.2s;
}

.nav-group-title:hover {
  background: rgba(255,255,255,0.05);
  color: rgba(255,255,255,0.85);
}

.nav-arrow { font-size: 10px; transition: transform 0.2s; opacity: 0.6; }
.nav-group.collapsed .nav-arrow { transform: rotate(-90deg); }

.nav-group-items { overflow: hidden; transition: max-height 0.3s ease; }
.nav-group.collapsed .nav-group-items { max-height: 0; }
.nav-group:not(.collapsed) .nav-group-items { max-height: 500px; }

.nav-item {
  display: block;
  padding: 8px 14px 8px 32px;
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  font-size: 13px;
  transition: all 0.15s;
  border-radius: 6px;
  margin: 1px 8px;
}

.nav-item:hover {
  background: var(--sidebar-hover);
  color: #fff;
}

.nav-item.active {
  background: var(--sidebar-active);
  color: #fff;
  border-left: 3px solid var(--accent);
  padding-left: 29px;
}

.sidebar > .nav-item:first-of-type {
  padding-left: 16px;
  margin-bottom: 4px;
}

.main-content {
  flex: 1;
  margin-left: 220px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ========== 顶部栏 ========== */
.topbar {
  background: #fff;
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.topbar-left h1 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  letter-spacing: -0.3px;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text-light);
  font-size: 13px;
}

.topbar-time {
  font-variant-numeric: tabular-nums;
  color: var(--text-light);
  font-size: 13px;
}

.topbar-user {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: var(--bg-light);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
}

.topbar-user .user-badge {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
}

/* ========== 面包屑 ========== */
.breadcrumb {
  padding: 10px 24px;
  background: #fff;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-light);
}

.breadcrumb a { color: var(--accent-blue); text-decoration: none; font-weight: 500; }
.breadcrumb a:hover { text-decoration: underline; }

/* ========== 内容区 ========== */
.content { padding: 24px; flex: 1; }

/* ========== 卡片 ========== */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 20px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #fafbfc;
}

.card-header h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-dark);
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-body { padding: 20px; }

/* ========== 页面工具栏 ========== */
.page-toolbar {
  display: flex;
  gap: 10px;
  align-items: center;
}

.page-toolbar .search-input {
  width: 220px;
}
.page-toolbar .form-control {
  width: 220px;
  flex-shrink: 0;
}
.page-toolbar {
  display: flex;
  gap: 10px;
  align-items: center;
}

.page-toolbar .search-input {
  width: 220px;
}

/* ========== KPI 卡片 ========== */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.kpi-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent-blue);
  transition: transform 0.15s, box-shadow 0.15s;
}

.kpi-card:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.kpi-card.warning { border-left-color: var(--warning); }
.kpi-card.danger { border-left-color: var(--danger); }
.kpi-card.success { border-left-color: var(--success); }
.kpi-card.info { border-left-color: var(--info); }

.kpi-label {
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 8px;
  font-weight: 500;
}

.kpi-value {
  font-size: 26px;
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.kpi-unit {
  font-size: 13px;
  color: var(--text-light);
  margin-left: 4px;
  font-weight: 500;
}

/* ========== 表格 ========== */
.table-responsive { overflow-x: auto; }

.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.data-table th {
  background: #f8fafc;
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 12px;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}

.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-dark);
}

.data-table tbody tr { transition: background 0.12s; }

.data-table tbody tr:hover { background: #f8fafc; }

.data-table tbody tr:nth-child(even) { background: #fafbfc; }
.data-table tbody tr:nth-child(even):hover { background: #f1f5f9; }

/* 表格操作列 */
.data-table td:last-child {
  white-space: nowrap;
}

/* ========== 状态标签 ========== */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.3;
}

.badge-success { background: #dcfce7; color: #166534; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-info { background: #cffafe; color: #155e75; }
.badge-secondary { background: #f1f5f9; color: #475569; }

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 8px 16px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.15s;
  font-family: inherit;
  height: 36px;
  line-height: 1;
  white-space: nowrap;
}

.btn:hover { opacity: 0.9; transform: translateY(-1px); }
.btn:active { transform: translateY(0); opacity: 1; }

.btn-primary { background: var(--accent-blue); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-secondary { background: #64748b; color: #fff; }
.btn-info { background: var(--info); color: #fff; }

.btn-sm { padding: 5px 12px; font-size: 12px; height: 30px; border-radius: 5px; }
.btn-xs { padding: 3px 8px; font-size: 11px; height: 24px; border-radius: 4px; }

/* ========== 表单 ========== */
.form-group { margin-bottom: 16px; }

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dark);
}

.form-control {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  font-family: inherit;
  transition: all 0.2s;
  height: 36px;
  background: #fff;
  color: var(--text-dark);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
}

.form-control::placeholder { color: #94a3b8; }

select.form-control { height: 36px; padding-right: 28px; }
textarea.form-control { height: auto; min-height: 80px; resize: vertical; }

/* 表单网格布局 */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 16px;
}

.form-grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0 16px;
}

/* 只读字段 */
.form-control[readonly] {
  background: #f8fafc;
  color: var(--text-light);
  cursor: not-allowed;
}

/* ========== 搜索框美化 ========== */
input[data-search-table],
.search-input,
.page-toolbar .search-input {
  padding-left: 36px;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M11.742 10.344a6.5 6.5 0 1 0-1.397 1.398h-.001c.03.04.062.078.098.115l3.85 3.85a1 1 0 0 0 1.415-1.414l-3.85-3.85a1.007 1.007 0 0 0-.115-.1zM12 6.5a5.5 5.5 0 1 1-11 0 5.5 5.5 0 0 1 11 0z'/%3E%3C/svg%3E") no-repeat 12px center;
  background-size: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  height: 38px;
  font-size: 13px;
  color: var(--text-dark);
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
  max-width: 280px;
  flex-shrink: 0;
}

input[data-search-table]:focus,
.search-input:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.12), var(--shadow-sm);
  background-color: #fff;
}

input[data-search-table]::placeholder,
.search-input::placeholder {
  color: #94a3b8;
}

/* 响应式：移动端搜索框宽度100% */
@media (max-width: 768px) {
  input[data-search-table],
  .search-input,
  .page-toolbar .search-input {
    width: 100% !important;
  }
}

/* Checkbox 行 */
.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.checkbox-row input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--accent-blue);
}

.checkbox-row label {
  margin: 0;
  font-weight: 500;
  cursor: pointer;
}

/* ========== 模态框 ========== */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15,23,42,0.5);
  z-index: 2000;
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(2px);
  opacity: 0;
  transition: opacity 0.2s;
}

.modal-overlay.active {
  display: flex;
  opacity: 1;
}

.modal {
  background: #fff;
  border-radius: var(--radius);
  width: 92%;
  max-width: 700px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transform: translateY(-10px) scale(0.98);
  transition: transform 0.25s cubic-bezier(0.16,1,0.3,1);
}

.modal-overlay.active .modal {
  transform: translateY(0) scale(1);
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #fafbfc;
  position: sticky;
  top: 0;
  z-index: 10;
}

.modal-header h3 { font-size: 15px; font-weight: 700; }

.modal-close {
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--text-light);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  transition: all 0.15s;
}

.modal-close:hover { background: var(--bg-light); color: var(--text-dark); }

.modal-body { padding: 20px; }

.modal-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  background: #fafbfc;
  position: sticky;
  bottom: 0;
  z-index: 10;
}

/* ========== 标签页 ========== */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
  background: #fff;
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 0 8px;
}

.tab {
  padding: 12px 20px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  color: var(--text-light);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.15s;
  user-select: none;
}

.tab:hover { color: var(--accent-blue); }

.tab.active {
  color: var(--accent-blue);
  border-bottom-color: var(--accent-blue);
  font-weight: 600;
}

/* ========== 设备卡片 ========== */
.machine-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.machine-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  border-left: 4px solid var(--success);
  transition: transform 0.15s, box-shadow 0.15s;
}

.machine-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.machine-card.warning { border-left-color: var(--warning); }
.machine-card.danger { border-left-color: var(--danger); }
.machine-card.info { border-left-color: var(--info); }

.machine-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.machine-name { font-weight: 700; font-size: 15px; color: var(--text-dark); }

.machine-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  font-size: 12px;
  color: var(--text-light);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: #e2e8f0;
  border-radius: 4px;
  overflow: hidden;
  margin-top: 10px;
}

.progress-fill {
  height: 100%;
  background: var(--accent-blue);
  border-radius: 4px;
  transition: width 0.3s;
}

/* ========== 状态/加载/空状态 ========== */
.loading { text-align: center; padding: 40px; color: var(--text-light); }

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-light);
  font-size: 14px;
}

.empty-state::before {
  content: "📭";
  display: block;
  font-size: 40px;
  margin-bottom: 12px;
  opacity: 0.5;
}

/* ========== 底部 ========== */
.footer {
  padding: 16px 24px;
  text-align: center;
  font-size: 12px;
  color: var(--text-light);
  border-top: 1px solid var(--border);
  background: #fff;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .sidebar { width: 0; overflow: hidden; }
  .main-content { margin-left: 0; }
  .kpi-grid { grid-template-columns: 1fr 1fr; }
  .form-grid, .form-grid-3 { grid-template-columns: 1fr; }
  .page-toolbar { flex-wrap: wrap; }
  .page-toolbar .search-input { width: 100%; }
}

/* 隐藏/显示 */
.hidden { display: none !important; }

/* ========== 工具类 ========== */
.alert-row { background: #fef2f2 !important; }
.alert-row:hover { background: #fee2e2 !important; }

.text-danger { color: var(--danger); font-weight: 700; }
.text-success { color: var(--success); font-weight: 600; }
.text-muted { color: var(--text-light); font-size: 12px; }

.hint-text {
  font-size: 12px;
  color: var(--text-light);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.hint-text::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--danger);
}

.check-summary {
  margin-bottom: 12px;
  font-weight: 600;
  font-size: 15px;
}

/* 403 页面 */
.unauthorized {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  background: var(--bg-light);
}
.unauthorized h1 {
  font-size: 100px;
  font-weight: 800;
  color: var(--danger);
  margin-bottom: 10px;
  letter-spacing: -4px;
  line-height: 1;
}
.unauthorized p {
  font-size: 16px;
  color: var(--text-light);
  margin-bottom: 28px;
}
.unauthorized a {
  padding: 10px 28px;
  background: var(--accent-blue);
  color: #fff;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.15s;
}
.unauthorized a:hover {
  background: #1d4ed8;
  transform: translateY(-1px);
}
.hidden { display: none !important; }

/* 必填字段星号标记 */
.required-mark { color: #dc2626; font-weight: 700; margin-left: 2px; }

/* ========== 图表看板（三大板块） ========== */
.dashboard-section {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  margin-bottom: 20px;
  overflow: hidden;
}

.section-title {
  padding: 14px 20px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-dark);
  border-bottom: 1px solid var(--border);
  background: #f8fafc;
}

/* KPI 小尺寸 */
.kpi-grid.small {
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  padding: 16px 20px;
  margin-bottom: 0;
}

.kpi-grid.small .kpi-card {
  padding: 14px 16px;
  border-left-width: 3px;
}

.kpi-grid.small .kpi-value {
  font-size: 22px;
}

/* 图表行布局 */
.chart-row {
  display: flex;
  gap: 16px;
  padding: 0 20px 20px;
}

.chart-row .chart-card {
  flex: 1;
  min-width: 0;
}

.chart-row .chart-card.flex2 {
  flex: 2;
}

.chart-row .chart-card.flex1 {
  flex: 1;
}

.chart-row .chart-body {
  height: 260px;
}

.chart-row .chart-body.table-body {
  height: 260px;
  overflow-y: auto;
  padding: 0;
}

.chart-row .chart-body.table-body .data-table {
  min-width: auto;
}

.chart-row .chart-body.table-body .data-table th,
.chart-row .chart-body.table-body .data-table td {
  padding: 8px 12px;
  font-size: 12px;
}

/* 迷你进度条 */
.mini-bar {
  width: 80px;
  height: 8px;
  background: #e2e8f0;
  border-radius: 4px;
  overflow: hidden;
  display: inline-block;
  vertical-align: middle;
  margin-right: 6px;
}

.mini-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.3s;
}

.mini-text {
  font-size: 11px;
  color: var(--text-light);
  font-weight: 600;
}

@media (max-width: 768px) {
  .chart-row {
    flex-direction: column;
  }
  .chart-row .chart-card.flex2,
  .chart-row .chart-card.flex1 {
    flex: 1;
  }
}