:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --panel-soft: #f8fafc;
  --line: #d8dee9;
  --line-strong: #b7c0cf;
  --text: #172033;
  --muted: #647083;
  --muted-2: #8a95a7;
  --blue: #2563eb;
  --teal: #0f766e;
  --green: #15803d;
  --amber: #b45309;
  --red: #b91c1c;
  --slate: #334155;
  --shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
  --radius: 8px;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
}

button,
input,
select,
textarea {
  font: inherit;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 248px 1fr;
}

.sidebar {
  background: #111827;
  color: #f8fafc;
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  display: grid;
  place-items: center;
  font-weight: 800;
  letter-spacing: 0;
  background: #1f2937;
}

.brand-title {
  font-size: 18px;
  font-weight: 800;
}

.brand-subtitle {
  color: #aeb8c8;
  font-size: 12px;
  margin-top: 2px;
}

.nav {
  display: grid;
  gap: 6px;
}

.nav-item {
  height: 38px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: #cbd5e1;
  text-align: left;
  padding: 0 12px;
  cursor: pointer;
}

.nav-item:hover,
.nav-item.active {
  background: #243142;
  color: #ffffff;
}

.side-status {
  margin-top: auto;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.05);
  padding: 11px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #dbe4f0;
  border-radius: var(--radius);
  font-size: 13px;
}

.producer-credit {
  color: #cbd5e1;
  font-size: 12px;
  letter-spacing: 0;
  padding: 0 2px;
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
  flex: 0 0 auto;
}

.status-red {
  background: var(--red);
}

.status-green {
  background: var(--green);
}

.status-amber {
  background: var(--amber);
}

.status-blue {
  background: var(--blue);
}

.main {
  min-width: 0;
  padding: 22px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.topbar h1 {
  margin: 0;
  font-size: 24px;
  letter-spacing: 0;
}

.topbar p {
  margin: 5px 0 0;
  color: var(--muted);
}

.top-actions {
  display: flex;
  gap: 8px;
}

.button {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  height: 34px;
  padding: 0 12px;
  border-radius: 6px;
  cursor: pointer;
}

.button-primary {
  background: #172033;
  border-color: #172033;
  color: #fff;
}

.button-ghost:hover {
  border-color: var(--line-strong);
  background: var(--panel-soft);
}

.view {
  display: none;
}

.active-view {
  display: block;
}

.grid {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.grid > * {
  min-width: 0;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  min-width: 0;
}

.panel-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.panel-header h2,
.panel-header h3 {
  margin: 0;
  font-size: 16px;
}

.panel-body {
  padding: 16px;
}

.metric {
  padding: 16px;
}

.metric-label {
  color: var(--muted);
  font-size: 13px;
}

.metric-value {
  margin-top: 8px;
  font-size: 30px;
  font-weight: 800;
}

.metric-sub {
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
}

.progress-bar {
  height: 8px;
  background: #e6eaf0;
  border-radius: 999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: var(--value, 0%);
  background: var(--bar, var(--blue));
}

.progress-mini {
  display: grid;
  gap: 6px;
}

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.muted {
  color: var(--muted);
}

.small {
  font-size: 12px;
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  border-bottom: 1px solid var(--line);
  padding: 10px 8px;
  text-align: left;
  vertical-align: middle;
  font-size: 13px;
}

.table th {
  color: var(--muted);
  font-weight: 700;
  background: var(--panel-soft);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  border: 1px solid var(--line);
  padding: 3px 8px;
  font-size: 12px;
  white-space: nowrap;
  background: #fff;
}

.badge-red {
  color: var(--red);
  border-color: #fecaca;
  background: #fff1f2;
}

.badge-amber {
  color: var(--amber);
  border-color: #fed7aa;
  background: #fff7ed;
}

.badge-green {
  color: var(--green);
  border-color: #bbf7d0;
  background: #f0fdf4;
}

.heatmap {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 10px;
}

.heat-cell {
  border: 1px solid var(--line);
  background: var(--panel-soft);
  border-radius: var(--radius);
  padding: 11px;
  display: grid;
  gap: 8px;
}

.heat-title {
  font-size: 13px;
  font-weight: 700;
}

.tree {
  display: grid;
  gap: 8px;
}

.tree details {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
}

.tree summary {
  list-style: none;
  cursor: pointer;
  padding: 10px 12px;
  display: grid;
  grid-template-columns: 1fr 160px 120px;
  gap: 12px;
  align-items: center;
}

.tree summary::-webkit-details-marker {
  display: none;
}

.tree-children {
  padding: 0 10px 10px 24px;
  display: grid;
  gap: 8px;
}

.leaf-row {
  border: 1px solid var(--line);
  background: var(--panel-soft);
  border-radius: 6px;
  padding: 8px 10px;
  display: grid;
  grid-template-columns: 1fr 160px 120px;
  gap: 12px;
  align-items: center;
}

.topology {
  position: relative;
  min-height: 540px;
  overflow: auto;
  background: linear-gradient(180deg, #ffffff, #f8fafc);
}

.topology-inner {
  min-width: 980px;
  padding: 24px;
  position: relative;
}

.topology-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.topology-grid {
  display: grid;
  grid-template-columns: 220px 220px 1fr;
  gap: 44px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.substation-node,
.switch-node,
.branch-node {
  border: 1px solid var(--line-strong);
  background: #fff;
  border-radius: var(--radius);
  padding: 10px;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.06);
}

.substation-node {
  height: 104px;
  display: grid;
  align-content: center;
  justify-items: start;
}

.switch-stack,
.branch-stack {
  display: grid;
  gap: 14px;
}

.branch-group {
  display: grid;
  grid-template-columns: repeat(5, minmax(112px, 1fr));
  gap: 8px;
}

.branch-node {
  min-height: 62px;
  font-size: 12px;
}

.node-title {
  font-weight: 800;
  font-size: 13px;
}

.node-meta {
  color: var(--muted);
  margin-top: 4px;
  font-size: 12px;
}

.lv-matrix {
  display: grid;
  gap: 14px;
}

.matrix-grid {
  overflow-x: auto;
}

.matrix-table {
  min-width: 860px;
}

.matrix-cell {
  min-width: 82px;
}

.cell-meter {
  height: 28px;
  border-radius: 5px;
  background: #e6eaf0;
  overflow: hidden;
  position: relative;
}

.cell-meter span {
  display: block;
  height: 100%;
  width: var(--value);
  background: var(--bar);
}

.cell-meter em {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-style: normal;
  font-size: 12px;
  font-weight: 700;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.field {
  display: grid;
  gap: 6px;
}

.field label {
  font-size: 13px;
  color: var(--muted);
  font-weight: 700;
}

.field input,
.field select,
.field textarea {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 9px 10px;
  background: #fff;
  min-width: 0;
}

.field textarea {
  min-height: 84px;
  resize: vertical;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}

.segmented button {
  border: 0;
  background: #fff;
  height: 36px;
  cursor: pointer;
  border-right: 1px solid var(--line);
}

.segmented button:last-child {
  border-right: 0;
}

.segmented button.active {
  background: #172033;
  color: #fff;
}

.history-list {
  display: grid;
  gap: 8px;
  max-height: 420px;
  overflow: auto;
}

.history-item {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 6px;
  padding: 10px;
}

.chart-wrap {
  height: 320px;
}

canvas {
  width: 100%;
  height: 100%;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 10px;
}

.toolbar .field {
  min-width: 190px;
}

.command-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.command-card {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
  padding: 14px;
  display: grid;
  gap: 8px;
  min-height: 96px;
}

.command-card strong {
  font-size: 18px;
}

.workface-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
}

.workface-card {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
  padding: 13px;
  display: grid;
  gap: 10px;
  min-height: 180px;
}

.workface-card:hover {
  border-color: var(--line-strong);
}

.sequence-rail {
  display: grid;
  gap: 10px;
}

.sequence-step {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
  padding: 12px;
  display: grid;
  gap: 8px;
}

.soft-tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  border: 1px solid #dbe4ef;
  background: #f8fafc;
  border-radius: 999px;
  padding: 0 8px;
  margin: 0 5px 5px 0;
  color: #334155;
  font-size: 12px;
}

.risk-line {
  border-left: 3px solid #f59e0b;
  background: #fff7ed;
  color: #7c2d12;
  padding: 8px 10px;
  font-size: 12px;
  line-height: 1.45;
}

.stack-list {
  display: grid;
  gap: 10px;
}

.control-row {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
  padding: 11px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
}

.owner-box {
  border: 1px solid var(--line);
  background: var(--panel-soft);
  border-radius: 6px;
  padding: 7px 9px;
  color: var(--slate);
  font-size: 12px;
  white-space: nowrap;
}

.equipment-grid,
.interface-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 12px;
}

.equipment-card,
.interface-card {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
  padding: 13px;
  display: grid;
  gap: 10px;
}

.mini-field {
  border: 1px solid var(--line);
  background: var(--panel-soft);
  border-radius: 6px;
  padding: 9px;
  display: grid;
  gap: 4px;
}

.mini-field span {
  color: var(--muted);
  font-size: 12px;
}

.mini-field strong {
  font-size: 13px;
  line-height: 1.35;
}

.workface-title {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
}

.workface-title strong {
  line-height: 1.35;
}

.chip-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
}

.chip {
  min-height: 34px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  border-radius: 6px;
  padding: 0 8px;
  cursor: pointer;
  font-size: 12px;
  white-space: nowrap;
}

.chip-active {
  border-color: #172033;
  background: #172033;
  color: #fff;
}

.mini-metric {
  border: 1px solid var(--line);
  background: var(--panel-soft);
  border-radius: var(--radius);
  padding: 12px;
  min-height: 74px;
  display: grid;
  align-content: center;
  gap: 6px;
}

.mini-metric strong {
  font-size: 24px;
  line-height: 1;
}

.report-preview {
  margin: 0;
  min-height: 420px;
  max-height: 640px;
  overflow: auto;
  border: 1px solid var(--line);
  background: #0f172a;
  color: #e5edf8;
  border-radius: var(--radius);
  padding: 16px;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-word;
}

.sticky-submit {
  min-height: 42px;
  font-weight: 800;
}

.table-wrap {
  overflow-x: auto;
  max-width: 100%;
  min-width: 0;
}

.table-wrap .table {
  min-width: 760px;
}

.empty {
  border: 1px dashed var(--line-strong);
  background: var(--panel-soft);
  border-radius: var(--radius);
  padding: 18px;
  color: var(--muted);
  text-align: center;
}

.asset-image {
  width: 100%;
  max-height: 380px;
  object-fit: contain;
  background: #eef2f7;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 99;
  background: #172033;
  color: #fff;
  padding: 10px 14px;
  border-radius: 6px;
  box-shadow: var(--shadow);
}

@media (max-width: 980px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    height: auto;
    position: relative;
  }

  .nav {
    grid-template-columns: repeat(3, 1fr);
  }

  .topbar,
  .top-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .command-grid,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .tree summary,
  .leaf-row {
    grid-template-columns: 1fr;
  }

  .toolbar {
    display: grid;
  }

  .toolbar .field {
    min-width: 0;
  }

  .chip-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .control-row {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .equipment-grid,
  .interface-grid {
    grid-template-columns: 1fr;
  }

  .sticky-submit {
    position: sticky;
    bottom: 12px;
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.18);
  }
}

@media (max-width: 640px) {
  .main {
    padding: 14px;
  }

  .sidebar {
    padding: 14px;
    gap: 14px;
  }

  .nav {
    grid-template-columns: repeat(2, 1fr);
  }

  .topbar h1 {
    font-size: 20px;
  }

  .panel-header {
    align-items: stretch;
    flex-direction: column;
  }

  .metric-value {
    font-size: 26px;
  }

  .workface-grid {
    grid-template-columns: 1fr;
  }
}