:root {
  --bg: #1a1d23;
  --panel: #242830;
  --border: #343a46;
  --text: #e8eaed;
  --muted: #9aa0a6;
  --accent: #4ea1ff;
  --hole: #ff8a4c;
  --highlight: #ffe566;
}

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

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}

#app {
  display: grid;
  grid-template-columns: 300px 1fr 300px;
  width: 100%;
  height: 100%;
}

#sidebar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  overflow: hidden;
}

#sidebar h1 {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.meta,
.status {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
}

.status.error {
  color: #ff7b7b;
}

.controls {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

button,
label.file-btn {
  appearance: none;
  border: 1px solid var(--border);
  background: #2d3340;
  color: var(--text);
  border-radius: 6px;
  padding: 7px 10px;
  font-size: 12px;
  cursor: pointer;
}

button:hover,
label.file-btn:hover {
  border-color: var(--accent);
}

button.primary {
  background: #2a4a73;
  border-color: #3d6ea8;
}

label.file-btn input {
  display: none;
}

label.check {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
}

.search-box {
  display: flex;
  gap: 6px;
  align-items: center;
}

.search-box input[type="search"] {
  flex: 1;
  min-width: 0;
  appearance: none;
  border: 1px solid var(--border);
  background: #1e222a;
  color: var(--text);
  border-radius: 6px;
  padding: 7px 10px;
  font-size: 12px;
}

.search-box input[type="search"]:focus {
  outline: none;
  border-color: var(--accent);
}

.search-box input[type="search"]::-webkit-search-cancel-button {
  display: none;
}

#searchClearBtn {
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  padding: 0;
  font-size: 16px;
  line-height: 28px;
}

.search-results {
  max-height: 140px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #1e222a;
  font-size: 11px;
}

.search-results.hidden {
  display: none;
}

.search-results-header {
  padding: 6px 8px;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: #1e222a;
}

.search-result-item {
  padding: 6px 8px;
  cursor: pointer;
  border-bottom: 1px solid #2a303c;
}

.search-result-item:last-child {
  border-bottom: none;
}

.search-result-item:hover,
.search-result-item.active {
  background: #2f3644;
}

.search-result-item .name {
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-result-item .sub {
  color: var(--muted);
  font-size: 10px;
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

#tree {
  flex: 1;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #1e222a;
  padding: 6px;
}

.tree-root {
  margin-bottom: 10px;
}

.tree-root-title {
  display: flex;
  align-items: flex-start;
  gap: 4px;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 8px;
  color: var(--accent);
  cursor: pointer;
  border-radius: 4px;
}

.tree-root-title:hover,
.tree-root-title.active,
.tree-item:hover,
.tree-item.active,
.tree-node:hover,
.tree-node.active {
  background: #2f3644;
}

.tree-item,
.tree-node {
  font-size: 11px;
  padding: 4px 8px;
  color: var(--muted);
  cursor: pointer;
  border-radius: 4px;
}

.tree-node {
  display: flex;
  align-items: flex-start;
  gap: 4px;
  line-height: 1.35;
}

.tree-node-body {
  flex: 1;
  min-width: 0;
}

.tree-root-title .tree-node-body {
  flex: 1;
  min-width: 0;
}

.tree-node.active .tree-name {
  color: var(--highlight);
}

.tree-node.is-hidden,
.tree-root-title.is-hidden {
  opacity: 0.42;
}

.tree-node.is-hidden .tree-name {
  text-decoration: line-through;
  text-decoration-color: #6a7385;
}

.tree-node.search-match,
.tree-root-title.search-match {
  background: #3a3528;
  box-shadow: inset 0 0 0 1px #8a7030;
}

.tree-node.search-match .tree-name,
.tree-root-title.search-match .tree-node-body > .tree-name {
  color: var(--highlight);
}

.hide-btn {
  flex: 0 0 auto;
  margin-top: 1px;
  width: 22px;
  height: 22px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: #2a303c;
  color: var(--muted);
  font-size: 11px;
  line-height: 20px;
  cursor: pointer;
}

.hide-btn:hover {
  color: var(--text);
  border-color: #5a6578;
  background: #343b4a;
}

.hide-btn.is-off {
  color: var(--highlight);
  border-color: #6a5a3a;
}

.tree-toggle {
  flex: 0 0 auto;
  margin-top: 1px;
  width: 22px;
  height: 22px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: #2a303c;
  color: var(--muted);
  font-size: 10px;
  line-height: 20px;
  cursor: pointer;
}

.tree-toggle:hover {
  color: var(--text);
  border-color: #5a6578;
}

.tree-toggle.is-leaf {
  visibility: hidden;
  pointer-events: none;
}

.tree-name {
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tree-name .tag {
  display: inline-block;
  margin-left: 4px;
  padding: 0 4px;
  font-size: 10px;
  color: var(--accent);
  border: 1px solid var(--border);
  border-radius: 3px;
  vertical-align: 1px;
}

.tree-name .tag.slot {
  color: #2ec4b6;
}

.tree-sub {
  color: var(--muted);
  font-size: 10px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  opacity: 0.9;
}

.tree-item.active {
  color: var(--highlight);
}

#inspector {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px;
  background: var(--panel);
  border-left: 1px solid var(--border);
  overflow: hidden;
  min-width: 0;
}

.inspector-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.inspector-header h2 {
  font-size: 14px;
  font-weight: 600;
}

#inspectorCloseBtn {
  width: 28px;
  height: 28px;
  padding: 0;
  font-size: 16px;
  line-height: 26px;
}

.inspector-body {
  flex: 1;
  overflow: auto;
  min-height: 0;
}

.inspector-empty {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.6;
  padding: 8px 2px;
}

.inspector-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
  word-break: break-all;
}

.inspector-title .tag {
  display: inline-block;
  margin-left: 6px;
  padding: 0 5px;
  font-size: 10px;
  font-weight: 500;
  color: var(--accent);
  border: 1px solid var(--border);
  border-radius: 3px;
  vertical-align: 1px;
}

.inspector-title .tag.slot {
  color: #2ec4b6;
}

.inspector-section {
  margin-top: 12px;
}

.inspector-section-title {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 6px;
  letter-spacing: 0.04em;
}

.inspector-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.inspector-table th,
.inspector-table td {
  padding: 5px 0;
  vertical-align: top;
  border-bottom: 1px solid #2a303c;
  text-align: left;
}

.inspector-table th {
  width: 42%;
  max-width: 140px;
  color: var(--muted);
  font-weight: 500;
  padding-right: 8px;
  white-space: normal;
  word-break: break-word;
}

.inspector-table td {
  color: var(--text);
  word-break: break-all;
}

.inspector-table tr:last-child th,
.inspector-table tr:last-child td {
  border-bottom: none;
}

.inspector-table-muted th,
.inspector-table-muted td {
  color: var(--muted);
}

#viewport {
  position: relative;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at 30% 20%, #2a3140 0%, transparent 50%),
    linear-gradient(160deg, #151820 0%, #1c212c 55%, #12151b 100%);
}

#viewport canvas {
  display: block;
  width: 100%;
  height: 100%;
}

#drop-hint {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(20, 24, 32, 0.72);
  border: 2px dashed var(--accent);
  color: var(--accent);
  font-size: 16px;
  pointer-events: none;
  z-index: 2;
}

#drop-hint.visible {
  display: flex;
}

@media (max-width: 1100px) {
  #app {
    grid-template-columns: 260px 1fr 260px;
  }
}

@media (max-width: 800px) {
  #app {
    grid-template-columns: 1fr;
    grid-template-rows: 32% 36% 32%;
  }

  #sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  #inspector {
    border-left: none;
    border-top: 1px solid var(--border);
  }
}