:root {
  --bg: #1e1e1e;
  --bg-alt: #252526;
  --bg-panel: #1b1b1c;
  --border: #3c3c3c;
  --text: #d4d4d4;
  --text-dim: #8a8a8a;
  --accent: #4fc1e9;
  --accent-2: #4ec9b0;
  --prompt: #dcdcaa;
  --warn: #d7ba7d;
  --err: #f14c4c;
  --statusbar: #007acc;
  --menu-hover: #094771;
  --mono: "Cascadia Mono", "Consolas", "Lucida Console", monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  overflow: hidden;
}

#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* --- menu bar --- */
.menubar {
  display: flex;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  padding: 0 4px;
  user-select: none;
  flex-shrink: 0;
}

.menu {
  position: relative;
}

.menu > .menu-label {
  display: block;
  padding: 5px 10px;
  cursor: default;
  font-size: 12px;
}

.menu > .menu-label:hover,
.menu.open > .menu-label {
  background: var(--menu-hover);
}

.menu-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: #2d2d30;
  border: 1px solid var(--border);
  min-width: 240px;
  z-index: 50;
  box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
}

.menu.open .menu-dropdown {
  display: block;
}

.menu-item {
  padding: 6px 14px;
  cursor: default;
  font-size: 12px;
  white-space: nowrap;
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

.menu-item:hover {
  background: var(--menu-hover);
}

.menu-item.disabled {
  color: var(--text-dim);
  cursor: default;
}

.menu-item.disabled:hover {
  background: none;
}

.menu-sep {
  height: 1px;
  background: var(--border);
  margin: 4px 0;
}

.menu-shortcut {
  color: var(--text-dim);
  font-size: 11px;
}

/* --- toolbar --- */
.toolbar {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  padding: 4px 6px;
  flex-shrink: 0;
}

.toolbar button {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text);
  padding: 4px 8px;
  font-family: var(--mono);
  font-size: 12px;
  cursor: pointer;
  border-radius: 3px;
  display: flex;
  align-items: center;
  gap: 5px;
}

.toolbar button:hover {
  background: #37373d;
  border-color: var(--border);
}

.toolbar .sep {
  width: 1px;
  height: 20px;
  background: var(--border);
  margin: 0 4px;
}

.toolbar .filename {
  margin-left: auto;
  color: var(--text-dim);
  font-size: 12px;
  padding-right: 8px;
  max-width: 40%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* --- main layout --- */
.main {
  flex: 1;
  display: flex;
  min-height: 0;
}

.command-pane {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  border-right: 1px solid var(--border);
  position: relative;
}

#output {
  flex: 1;
  overflow-y: auto;
  padding: 8px 10px;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.45;
}

.line {
  min-height: 1.4em;
}

.line.echo {
  color: var(--text);
}

.line.echo .prompt {
  color: var(--prompt);
}

.line.warn {
  color: var(--warn);
}

.line.err {
  color: var(--err);
}

.line.banner {
  color: var(--accent-2);
}

.line.hint {
  color: var(--text-dim);
  font-style: italic;
}

.input-row {
  display: flex;
  align-items: center;
  border-top: 1px solid var(--border);
  padding: 6px 10px;
  flex-shrink: 0;
  background: var(--bg);
}

.input-row .prompt {
  color: var(--prompt);
  margin-right: 6px;
  white-space: nowrap;
}

#cmdInput {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
}

/* --- drop overlay --- */
.drop-overlay {
  display: none;
  position: absolute;
  inset: 0;
  background: rgba(0, 122, 204, 0.15);
  border: 3px dashed var(--accent);
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--accent);
  z-index: 40;
  pointer-events: none;
}

.command-pane.dragging .drop-overlay {
  display: flex;
}

/* --- side panel --- */
.sidepanel {
  width: 320px;
  display: flex;
  flex-direction: column;
  background: var(--bg-panel);
  flex-shrink: 0;
}

.sidepanel.hidden {
  display: none;
}

.tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
}

.tab {
  padding: 6px 12px;
  cursor: pointer;
  font-size: 12px;
  color: var(--text-dim);
  border-bottom: 2px solid transparent;
}

.tab.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

.tab-content {
  flex: 1;
  overflow-y: auto;
  display: none;
  font-size: 12px;
}

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

.row {
  padding: 5px 10px;
  border-bottom: 1px solid #2a2a2a;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.row:hover {
  background: #2a2d2e;
}

.row.current {
  background: #094771;
}

.row .primary {
  color: var(--text);
}

.row .secondary {
  color: var(--text-dim);
  font-size: 11px;
  display: block;
}

.empty-hint {
  color: var(--text-dim);
  padding: 14px;
  font-size: 12px;
  line-height: 1.5;
}

/* --- status bar --- */
.statusbar {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--statusbar);
  color: #fff;
  font-size: 11px;
  padding: 3px 10px;
  flex-shrink: 0;
}

.statusbar .spacer {
  flex: 1;
}

/* --- modal --- */
.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 100;
  align-items: center;
  justify-content: center;
}

.modal-backdrop.open {
  display: flex;
}

.modal {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  padding: 20px 24px;
  max-width: 480px;
  border-radius: 4px;
  line-height: 1.6;
  font-size: 13px;
}

.modal h2 {
  margin-top: 0;
  font-size: 15px;
  color: var(--accent-2);
}

.modal button {
  margin-top: 14px;
  background: var(--statusbar);
  border: none;
  color: #fff;
  padding: 6px 16px;
  cursor: pointer;
  border-radius: 3px;
  font-family: var(--mono);
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-thumb {
  background: #4b4b4b;
}

::-webkit-scrollbar-track {
  background: var(--bg-panel);
}