* {
  box-sizing: border-box;
}

:root {
  color-scheme: light dark;
  --bg: #f4f6f8;
  --surface: #ffffff;
  --surface-alt: #fbfcfe;
  --border: #d5d7db;
  --border-light: #e1e3e6;
  --text: #111111;
  --text-muted: #4f5765;
  --text-soft: #6a7282;
  --hover: #eef2f6;
  --selected: #dbe7ff;
  --progress-track: #e6e9ef;
  --progress-fill-start: #5c87ff;
  --progress-fill-end: #7aa2ff;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg: #14161b;
    --surface: #1f232b;
    --surface-alt: #202530;
    --border: #2d3440;
    --border-light: #2a303a;
    --text: #e9ecf1;
    --text-muted: #c0c7d3;
    --text-soft: #9aa3b2;
    --hover: #2a3140;
    --selected: #2c3b66;
    --progress-track: #2c313c;
    --progress-fill-start: #7aa2ff;
    --progress-fill-end: #8fb0ff;
  }
}

:root[data-theme="dark"] {
  --bg: #14161b;
  --surface: #1f232b;
  --surface-alt: #202530;
  --border: #2d3440;
  --border-light: #2a303a;
  --text: #e9ecf1;
  --text-muted: #c0c7d3;
  --text-soft: #9aa3b2;
  --hover: #2a3140;
  --selected: #2c3b66;
  --progress-track: #2c313c;
  --progress-fill-start: #7aa2ff;
  --progress-fill-end: #8fb0ff;
}

:root[data-theme="light"] {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --surface-alt: #fbfcfe;
  --border: #d5d7db;
  --border-light: #e1e3e6;
  --text: #111111;
  --text-muted: #4f5765;
  --text-soft: #6a7282;
  --hover: #eef2f6;
  --selected: #dbe7ff;
  --progress-track: #e6e9ef;
  --progress-fill-start: #5c87ff;
  --progress-fill-end: #7aa2ff;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.toolbar input {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface);
  color: var(--text);
}

.toolbar button {
  padding: 8px 12px;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  padding: 24px;
  flex: 1;
  min-height: 0;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  min-height: 520px;
}

.panel-head {
  padding: 16px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.panel-body {
  padding: 12px 16px;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.list {
  --col-name: 1fr;
  --col-size: 140px;
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1;
}

.list-row {
  display: grid;
  grid-template-columns: var(--col-name) var(--col-size);
  gap: 12px;
  align-items: center;
  min-width: max-content;
}

.list-header {
  font-weight: 600;
  color: var(--text);
  padding: 6px 8px;
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  background: var(--surface);
  z-index: 1;
}

.list-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow: auto;
}

.col {
  position: relative;
}

.col-resizer {
  position: absolute;
  top: 0;
  right: -8px;
  width: 12px;
  height: 100%;
  cursor: col-resize;
}

.tree {
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 8px;
  margin-bottom: 12px;
  background: var(--surface-alt);
  max-height: 180px;
  overflow: auto;
  position: sticky;
  top: 0;
  z-index: 2;
}

.tree-node {
  padding: 4px 6px;
  border-radius: 4px;
  cursor: pointer;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 6px;
}

.tree-node:hover {
  background: var(--hover);
}

.tree-node.current {
  background: var(--selected);
}

.tree-toggle {
  display: inline-flex;
  width: 12px;
  justify-content: center;
  color: var(--text-soft);
  font-size: 12px;
}

.tree-label {
  flex: 1;
}

.tree-loading {
  padding: 4px 6px;
  font-size: 12px;
  color: var(--text-soft);
  white-space: nowrap;
}

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

.path-row input {
  flex: 1;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface);
  color: var(--text);
}

.row {
  padding: 6px 8px;
  border-radius: 4px;
  cursor: pointer;
  white-space: nowrap;
}

.row .size,
.list-header .size {
  text-align: right;
  color: var(--text-muted);
}

.row:hover {
  background: var(--hover);
}

.row.selected {
  background: var(--selected);
}

.log {
  margin: 0 24px 24px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  flex-shrink: 0;
  padding: 8px 16px;
}

#log-list {
  padding: 12px 16px;
  font-family: Consolas, monospace;
  font-size: 12px;
  height: 200px;
  overflow-y: auto;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
}

.progress {
  position: relative;
  width: 200px;
  height: 10px;
  border-radius: 999px;
  background: var(--progress-track);
  overflow: hidden;
  display: none;
}

.progress.active {
  display: block;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--progress-fill-start), var(--progress-fill-end));
  transition: width 0.2s ease;
}

.progress.indeterminate .progress-bar {
  width: 40%;
  position: absolute;
  animation: progress-slide 1s infinite ease-in-out;
}

.progress-meta {
  font-size: 12px;
  color: var(--text-muted);
  min-width: 140px;
}

.progress-meta.secondary {
  color: var(--text-soft);
}

@keyframes progress-slide {
  0% { left: -40%; }
  100% { left: 100%; }
}

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