:root {
  color-scheme: dark;
  --bg: #101214;
  --panel: #181b1f;
  --panel-2: #20242a;
  --line: #343a42;
  --text: #e8edf2;
  --muted: #9aa4af;
  --accent: #54a8ff;
  --accent-2: #9ed06a;
  --danger: #ff6868;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, sans-serif;
  overflow: hidden;
}

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

button,
.file-button {
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 6px;
  cursor: pointer;
}

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

.app-header {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  background: #0d0f12;
}

.app-header h1 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.file-button input {
  display: none;
}

.editor-shell {
  height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: 300px minmax(420px, 1fr) 340px;
}

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

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

section + section {
  margin-top: 18px;
}

h2 {
  margin: 0 0 10px;
  font-size: 13px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.field-grid,
.property-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

label {
  display: grid;
  gap: 4px;
  color: var(--muted);
  font-size: 12px;
}

input,
select,
textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line);
  background: #0f1114;
  color: var(--text);
  border-radius: 5px;
  padding: 7px 8px;
}

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

.object-section {
  min-height: 0;
}

.object-list,
.tileset-list {
  display: grid;
  gap: 6px;
}

.object-item,
.tileset-item {
  border: 1px solid var(--line);
  background: #111418;
  border-radius: 6px;
  padding: 8px;
  cursor: pointer;
}

.object-item:hover {
  border-color: var(--accent);
}

.object-item.active {
  border-color: var(--accent);
  background: #122236;
}

.object-title {
  font-size: 13px;
  font-weight: 600;
}

.object-meta {
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

.canvas-panel {
  min-width: 0;
  display: grid;
  grid-template-rows: 40px 1fr;
  background: #0b0d10;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

#mapCanvas {
  width: 100%;
  height: 100%;
  display: block;
  background: #0e1115;
  cursor: crosshair;
}

.selection-summary {
  min-height: 34px;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 10px;
}

.danger-button {
  width: 100%;
  margin-top: 10px;
  color: #ffd8d8;
  border-color: #633;
}

.danger-button:hover {
  border-color: var(--danger);
}

#outputText {
  height: 220px;
  resize: vertical;
  white-space: pre;
  font-family: Consolas, "Cascadia Mono", monospace;
  font-size: 12px;
}