/* ========== 大唐沂南风电项目 - 公共设计系统 ========== */
:root {
  /* 主色系 - 科技蓝 */
  --primary: #1677ff;
  --primary-hover: #4096ff;
  --primary-light: #e6f4ff;
  --primary-dark: #0958d9;

  /* 功能色 */
  --success: #52c41a;
  --warning: #faad14;
  --danger: #ff4d4f;
  --info: #1677ff;

  /* 告警等级色 */
  --alarm-high: #ff4d4f;
  --alarm-mid: #faad14;
  --alarm-low: #1677ff;

  /* 中性色 */
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-tertiary: #9ca3af;
  --text-inverse: #ffffff;

  --bg-page: #f0f2f5;
  --bg-card: #ffffff;
  --bg-hover: #f5f5f5;
  --bg-sidebar: #001529;
  --bg-sidebar-hover: #112543;

  --border: #e5e7eb;
  --border-light: #f0f0f0;

  /* 尺寸 */
  --sidebar-width: 220px;
  --header-height: 56px;
  --radius-sm: 4px;
  --radius: 6px;
  --radius-lg: 8px;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-lg: 0 4px 12px rgba(0,0,0,0.12);

  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html, body {
  height: 100%;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--text-primary);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul, li { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; outline: none; }

/* ========== 系统顶部导航栏（三系统切换） ========== */
.top-nav {
  position: sticky;
  top: 0;
  z-index: 200;
  height: 52px;
  background: #fff;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}
.top-nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 15px;
  color: var(--text-primary);
  margin-right: 32px;
}
.top-nav-brand .brand-icon {
  width: 30px; height: 30px;
  background: linear-gradient(135deg, #1677ff, #4096ff);
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 15px;
}
.top-nav-brand .brand-sub {
  font-size: 12px;
  color: var(--text-tertiary);
  font-weight: normal;
  margin-left: 2px;
}
.top-nav-tabs { display: flex; gap: 4px; flex: 1; }
.top-nav-tab {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 16px;
  font-size: 13px;
  color: var(--text-secondary);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.top-nav-tab:hover { background: var(--bg-hover); color: var(--text-primary); }
.top-nav-tab.active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 500;
}
.top-nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-tertiary);
  font-size: 12px;
}

/* ========== 布局 ========== */
.page-wrapper { display: flex; flex-direction: column; min-height: 100vh; }
.layout { display: flex; flex: 1; min-height: 0; }

.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  color: rgba(255,255,255,0.85);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: sticky;
  top: 52px;
  height: calc(100vh - 52px);
  overflow-y: auto;
}

.sidebar-logo {
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 10px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  white-space: nowrap;
}

.sidebar-logo .logo-icon {
  width: 30px; height: 30px;
  background: linear-gradient(135deg, #1677ff, #4096ff);
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.sidebar-menu { flex: 1; padding: 8px 0; }
.menu-group-title {
  padding: 12px 16px 6px;
  font-size: 11px;
  color: rgba(255,255,255,0.4);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  cursor: pointer;
  font-size: 13px;
  color: rgba(255,255,255,0.75);
  transition: all 0.2s;
  border-left: 3px solid transparent;
}
.menu-item:hover { background: var(--bg-sidebar-hover); color: #fff; }
.menu-item.active {
  background: var(--primary);
  color: #fff;
  border-left-color: #fff;
}
.menu-item .icon { font-size: 16px; width: 18px; text-align: center; }

.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 11px;
  color: rgba(255,255,255,0.4);
}

/* 主内容区 */
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.header {
  height: var(--header-height);
  background: #fff;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-left { display: flex; align-items: center; gap: 16px; }
.breadcrumb { font-size: 13px; color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { margin: 0 6px; color: var(--text-tertiary); }

.header-right { display: flex; align-items: center; gap: 16px; }
.header-icon {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  color: var(--text-secondary);
  cursor: pointer;
  position: relative;
}
.header-icon:hover { background: var(--bg-hover); }
.header-icon .badge {
  position: absolute; top: 4px; right: 4px;
  min-width: 8px; height: 8px;
  background: var(--danger);
  border-radius: 50%;
  border: 2px solid #fff;
}
.user-info { display: flex; align-items: center; gap: 8px; cursor: pointer; padding: 4px 8px; border-radius: 6px; }
.user-info:hover { background: var(--bg-hover); }
.avatar {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1677ff, #4096ff);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px;
  font-weight: 500;
}

/* 内容区 */
.content { flex: 1; padding: 20px 24px; overflow-x: auto; }

.page-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 4px;
}
.page-desc { font-size: 13px; color: var(--text-secondary); margin-bottom: 20px; }

/* ========== 卡片 ========== */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-title { font-size: 15px; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.card-body { padding: 20px; }
.card-extra { display: flex; gap: 8px; align-items: center; }

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  font-size: 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text-primary);
  transition: all 0.2s;
  white-space: nowrap;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); color: #fff; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover { background: #ff7875; border-color: #ff7875; color: #fff; }
.btn-success { background: var(--success); border-color: var(--success); color: #fff; }
.btn-success:hover { background: #73d13d; border-color: #73d13d; color: #fff; }
.btn-warning { background: var(--warning); border-color: var(--warning); color: #fff; }
.btn-text { border: none; color: var(--primary); padding: 4px 8px; }
.btn-text:hover { color: var(--primary-hover); background: var(--primary-light); }
.btn-sm { padding: 4px 10px; font-size: 13px; }
.btn-icon { padding: 6px; border-radius: var(--radius); }

/* ========== 表单 ========== */
.form-item { margin-bottom: 18px; }
.form-label { display: block; margin-bottom: 6px; font-size: 13px; color: var(--text-secondary); }
.form-label .req { color: var(--danger); margin-right: 2px; }
.input, .select, .textarea {
  width: 100%;
  padding: 7px 12px;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color 0.2s;
}
.input:focus, .select:focus, .textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(22,119,255,0.1); }
.input::placeholder { color: var(--text-tertiary); }
.textarea { resize: vertical; min-height: 70px; }

/* ========== 表格 ========== */
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th {
  background: #fafafa;
  padding: 12px 16px;
  text-align: left;
  font-weight: 500;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-primary);
}
.table tbody tr:hover { background: #fafafa; }
.table .actions { display: flex; gap: 4px; flex-wrap: nowrap; }

/* ========== 标签 ========== */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: 12px;
  border-radius: 4px;
  border: 1px solid;
  line-height: 18px;
}
.tag-primary { color: var(--primary); background: var(--primary-light); border-color: #91caff; }
.tag-success { color: var(--success); background: #f6ffed; border-color: #b7eb8f; }
.tag-warning { color: var(--warning); background: #fffbe6; border-color: #ffe58f; }
.tag-danger { color: var(--danger); background: #fff1f0; border-color: #ffa39e; }
.tag-info { color: var(--text-secondary); background: #f5f5f5; border-color: #d9d9d9; }
.tag-default { color: #595959; background: #fafafa; border-color: #d9d9d9; }

/* ========== 状态点 ========== */
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; }
.dot-success { background: var(--success); box-shadow: 0 0 6px var(--success); }
.dot-danger { background: var(--danger); }
.dot-warning { background: var(--warning); }
.dot-default { background: var(--text-tertiary); }

/* ========== 筛选区 ========== */
.filter-bar {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}
.filter-row { display: flex; flex-wrap: wrap; gap: 16px; align-items: flex-end; }
.filter-item { display: flex; flex-direction: column; gap: 6px; min-width: 180px; }
.filter-item label { font-size: 12px; color: var(--text-secondary); }
.filter-actions { display: flex; gap: 8px; }

/* ========== 统计卡片 ========== */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-bottom: 20px; }
.stat-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
}
.stat-card.primary::before { background: var(--primary); }
.stat-card.success::before { background: var(--success); }
.stat-card.warning::before { background: var(--warning); }
.stat-card.danger::before { background: var(--danger); }
.stat-card.info::before { background: #13c2c2; }

.stat-label { font-size: 13px; color: var(--text-secondary); margin-bottom: 8px; }
.stat-value { font-size: 28px; font-weight: 700; line-height: 1; }
.stat-sub { margin-top: 8px; font-size: 12px; color: var(--text-tertiary); display: flex; align-items: center; gap: 4px; }
.stat-icon {
  position: absolute; right: 16px; top: 16px;
  width: 40px; height: 40px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  opacity: 0.85;
}

/* ========== 弹窗 ========== */
.modal-mask {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.45);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
}
.modal {
  background: #fff;
  border-radius: var(--radius-lg);
  width: 560px;
  max-width: 90vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
}
.modal-lg { width: 800px; }
.modal-xl { width: 1100px; }
.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-light);
  display: flex; align-items: center; justify-content: space-between;
}
.modal-title { font-size: 16px; font-weight: 600; }
.modal-close { font-size: 18px; color: var(--text-tertiary); cursor: pointer; }
.modal-body { padding: 20px; overflow-y: auto; flex: 1; }
.modal-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border-light);
  display: flex; justify-content: flex-end; gap: 8px;
}

/* ========== Tabs ========== */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.tab {
  padding: 10px 16px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all 0.2s;
}
.tab:hover { color: var(--primary); }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 500; }

/* ========== 进度条 ========== */
.progress { height: 6px; background: #f0f0f0; border-radius: 3px; overflow: hidden; }
.progress-bar { height: 100%; background: var(--primary); border-radius: 3px; transition: width 0.3s; }
.progress-bar.success { background: var(--success); }
.progress-bar.warning { background: var(--warning); }
.progress-bar.danger { background: var(--danger); }

/* ========== 树形 ========== */
.tree { font-size: 13px; }
.tree-node { padding: 4px 0; }
.tree-node-content {
  display: flex; align-items: center; gap: 6px;
  padding: 4px 8px;
  border-radius: 4px;
  cursor: pointer;
}
.tree-node-content:hover { background: var(--bg-hover); }
.tree-toggle { width: 16px; height: 16px; display: flex; align-items: center; justify-content: center; color: var(--text-tertiary); }
.tree-children { padding-left: 20px; }

/* ========== 工具类 ========== */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8 { gap: 8px; } .gap-12 { gap: 12px; } .gap-16 { gap: 16px; }
.mt-8 { margin-top: 8px; } .mt-16 { margin-top: 16px; } .mt-20 { margin-top: 20px; }
.mb-8 { margin-bottom: 8px; } .mb-16 { margin-bottom: 16px; } .mb-20 { margin-bottom: 20px; }
.text-sm { font-size: 13px; } .text-xs { font-size: 12px; }
.text-secondary { color: var(--text-secondary); } .text-tertiary { color: var(--text-tertiary); }
.text-success { color: var(--success); } .text-danger { color: var(--danger); } .text-warning { color: var(--warning); } .text-primary { color: var(--primary); }
.font-semibold { font-weight: 600; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

/* 滚动条美化 */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-thumb { background: #c1c1c1; border-radius: 3px; }
::-webkit-scrollbar-track { background: transparent; }

/* ========== 页脚 ========== */
.site-footer {
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 24px 32px 20px;
  color: var(--text-tertiary);
  font-size: 12px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  max-width: 1600px;
  margin: 0 auto;
}
.footer-section { min-width: 180px; }
.footer-section h4 {
  font-size: 13px;
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: 10px;
}
.footer-section a {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  padding: 3px 0;
  transition: color 0.2s;
}
.footer-section a:hover { color: var(--primary); }
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.footer-brand .fb-logo {
  display: flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 600; color: var(--text-primary);
}
.footer-brand .fb-logo i {
  width: 24px; height: 24px;
  background: linear-gradient(135deg, #1677ff, #4096ff);
  border-radius: 4px;
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; font-size: 13px;
}
.footer-copyright {
  border-top: 1px solid var(--border-light);
  margin-top: 18px;
  padding-top: 14px;
  text-align: center;
  font-size: 11px;
  color: var(--text-tertiary);
}

/* ========== 大屏专用 ========== */
.dashboard { background: var(--bg-page); }
.dark-card {
  background: linear-gradient(135deg, #1e3a5f 0%, #0f1f38 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 16px;
}