:root {
  --bg: #f6f8fb;
  --text: #1a1f2b;
  --muted: #5e6877;
  --panel: #ffffff;
  --border: #d7dde8;
  --tab-bg: #eff3f9;
  --tab-active: #ffffff;
  --no-power: #c62828;
  --on-ups: #ef6c00;
  --normal: #2e7d32;
  --unknown: #546e7a;
  --topbar-height: 78px;
  --tabs-height: 49px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(90deg, #f0f4ff 0%, #f8f8ff 100%);
}

.topbar h1 {
  margin: 0;
  font-size: 20px;
}

.topbar p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.meta {
  display: flex;
  gap: 10px;
  align-items: center;
}

.tabs {
  display: flex;
  gap: 8px;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--tab-bg);
}

.tab-btn {
  background: transparent;
  border: 1px solid transparent;
  padding: 8px 12px;
  border-radius: 8px;
  font-weight: 600;
}

.tab-btn.active {
  background: var(--tab-active);
  border-color: var(--border);
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

.layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  min-height: calc(100vh - var(--topbar-height) - var(--tabs-height));
}

.panel {
  border-right: 1px solid var(--border);
  background: var(--panel);
  padding: 14px;
  overflow-y: auto;
}

.panel section {
  margin-bottom: 18px;
}

.panel h2 {
  margin: 0 0 8px;
  font-size: 16px;
}

.panel label {
  display: block;
  margin: 5px 0;
  font-size: 14px;
}

button {
  border: 1px solid #c3ccda;
  background: #ffffff;
  color: #18212f;
  border-radius: 6px;
  padding: 8px 10px;
  cursor: pointer;
  font-size: 13px;
}

button:hover {
  background: #f5f9ff;
}

input[type="file"] {
  width: 100%;
  margin: 8px 0;
}

.summary-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.badge {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  background: #fff;
}

.badge strong {
  display: block;
  font-size: 20px;
  line-height: 1;
}

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

.badge.no-power strong { color: var(--no-power); }
.badge.on-ups strong { color: var(--on-ups); }
.badge.normal strong { color: var(--normal); }
.badge.unknown strong { color: var(--unknown); }

.map-area {
  min-height: 600px;
}

#mapView {
  width: 100%;
  height: calc(100vh - var(--topbar-height) - var(--tabs-height));
}

.small {
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
  white-space: pre-wrap;
}

.doc-wrap {
  padding: 18px;
}

.doc-wrap h2 {
  margin: 0 0 10px;
  font-size: 22px;
}

.doc-wrap p {
  margin: 0 0 12px;
  color: var(--muted);
}

.doc-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(240px, 1fr));
  gap: 12px;
}

.doc-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  background: #fff;
}

.doc-card h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.doc-card ul,
.doc-card ol {
  margin: 0;
  padding-left: 20px;
  color: #2a3445;
}

.doc-card li {
  margin-bottom: 6px;
}

.doc-card p {
  margin: 6px 0;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .tabs {
    flex-wrap: wrap;
  }

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

  .panel {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  #mapView {
    height: 62vh;
  }
}