* { box-sizing: border-box; }

body {
  margin: 0;
  background: #efefef;
  color: #000;
  font: 13px "Tahoma", "Verdana", Arial, sans-serif;
}

.topbar {
  background: #dcdcdc;
  border-bottom: 1px solid #a7a7a7;
  padding: 8px 10px;
}

.topbar h1 {
  margin: 0;
  font-size: 18px;
  font-weight: bold;
}

.topbar p {
  margin: 2px 0 0;
  color: #333;
}

.credits-link {
  color: #0000ee;
}

.layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 8px;
  padding: 8px;
}

.tree-panel,
.details-panel {
  background: #f7f7f7;
  border: 1px solid #b5b5b5;
}

.tree-panel__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-bottom: 1px solid #b5b5b5;
  background: #e6e6e6;
}

.filter-toggle {
  border: 1px solid #7e7e7e;
  background: #efefef;
  padding: 2px 8px;
  cursor: pointer;
}

.filter-panel {
  border-bottom: 1px solid #b5b5b5;
  background: #f1f1f1;
  padding: 6px 8px;
}

.platform-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.platform-filters label,
.strict-filter {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.strict-filter {
  margin-top: 6px;
}

.tree-root {
  padding: 6px;
  max-height: calc(100vh - 145px);
  overflow: auto;
}

.tree-list,
.tree-list ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.tree-list ul {
  margin-left: 14px;
  padding-left: 10px;
  border-left: 1px dotted #b7b7b7;
}

.tree-item {
  margin: 2px 0;
}

.tree-node {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 1px 3px;
  cursor: pointer;
  user-select: none;
}

.tree-node:hover {
  text-decoration: underline;
}

.tree-node .toggle {
  width: 12px;
  text-align: center;
  color: #444;
}

.tree-node.active {
  background: #dfe9ff;
  border: 1px solid #9db4e0;
}

.tree-node.build {
  color: #0000ee;
}

.tree-item.collapsed > ul {
  display: none;
}

.details-panel {
  padding: 8px;
}

.path {
  margin-bottom: 8px;
  border: 1px solid #b8b8b8;
  background: #f1f1f1;
  padding: 5px 6px;
  font-weight: bold;
}

.build-card {
  border: 1px solid #b8b8b8;
  background: #fdfdfd;
  padding: 8px;
  display: grid;
  gap: 5px;
}

.download-link {
  display: inline-block;
  width: fit-content;
  margin-top: 4px;
  padding: 5px 8px;
  border: 1px solid #7e7e7e;
  background: #e2e2e2;
  color: #0000ee;
  text-decoration: underline;
  font-weight: normal;
}

.download-link:hover {
  background: #d7d7d7;
}

.empty {
  border: 1px dashed #b9b9b9;
  background: #f8f8f8;
  padding: 8px;
  color: #333;
}

.news {
  margin-top: 8px;
  border: 1px solid #b8b8b8;
  background: #fdfdfd;
  padding: 8px;
}

.news h3 {
  margin: 0 0 6px;
  font-size: 14px;
}

.news .stats {
  margin-top: 8px;
}

.news .stats div {
  margin-top: 2px;
}

.hidden {
  display: none;
}

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

  .tree-root {
    max-height: none;
  }
}