:root {
  --bg: #111317;
  --panel: #171a1f;
  --line: #262a31;
  --text: #d7dae0;
  --muted: #8b919c;
  --accent: #f6821f;
  --good: #4cc38a;
  --warn: #e5b454;
  --bad: #ef6b6b;
  --info: #6ca8ff;
  font: 13px/1.45 ui-sans-serif, system-ui, sans-serif;
  color-scheme: dark;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); height: 100vh; display: flex; flex-direction: column; }
button, select, input, textarea { font: inherit; color: inherit; }
button { background: #232730; border: 1px solid var(--line); border-radius: 6px; padding: 3px 10px; cursor: pointer; }
button:disabled { opacity: 0.5; cursor: default; }
button.link { background: none; border: none; color: var(--muted); padding: 0 4px; }
button.link:hover { color: var(--text); }
kbd { font-size: 10px; color: var(--muted); }
code, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.muted { color: var(--muted); }

.bar { display: flex; align-items: center; gap: 10px; padding: 8px 14px; border-bottom: 1px solid var(--line); background: var(--panel); }
.brand { color: var(--accent); }
.pill { background: #232730; border-radius: 10px; padding: 1px 8px; }
.status { margin-left: auto; color: var(--muted); }
.status.live { color: var(--good); }

.layout {
  flex: 1; min-height: 0; display: grid; gap: 1px; background: var(--line);
  grid-template-columns: 220px minmax(0, 1.1fr) minmax(0, 1fr);
  grid-template-rows: minmax(0, 1.6fr) minmax(0, 1fr);
  grid-template-areas: "side editor preview" "side debug agent";
}
.layout > * { background: var(--bg); min-height: 0; min-width: 0; display: flex; flex-direction: column; }
.sidebar { grid-area: side; overflow: auto; padding: 8px 0; }
.editor-pane { grid-area: editor; }
.preview-pane { grid-area: preview; }
.debug-pane { grid-area: debug; }
.agent-pane { grid-area: agent; }

h2 { font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin: 10px 12px 4px; display: flex; justify-content: space-between; }
.list { list-style: none; margin: 0; padding: 0; }
.list li { padding: 3px 12px; cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.list li:hover { background: #1c2027; }
.list li.active { background: #232a35; }
.list li.flash { animation: flash 1.2s ease-out; }
@keyframes flash { from { background: rgba(246, 130, 31, 0.35); } to { background: transparent; } }
.versions li { display: flex; gap: 6px; align-items: baseline; }
.versions .who { font-size: 11px; padding: 0 5px; border-radius: 8px; background: #232730; }
.versions .who.agent { color: var(--accent); }
.versions .who.user { color: var(--info); }
.versions .msg { overflow: hidden; text-overflow: ellipsis; color: var(--muted); }

.pane-head { display: flex; align-items: center; gap: 8px; padding: 6px 10px; border-bottom: 1px solid var(--line); background: var(--panel); }
.pane-head input { flex: 1; min-width: 0; background: #0d0f12; border: 1px solid var(--line); border-radius: 6px; padding: 3px 8px; }
.pane-head select { background: #0d0f12; border: 1px solid var(--line); border-radius: 6px; padding: 2px 6px; }
.pane-head a { color: var(--muted); text-decoration: none; }
.dirty { color: var(--accent); }
#save { margin-left: auto; }
.editor { flex: 1; min-height: 0; overflow: auto; }
.editor .cm-editor { height: 100%; }
iframe { flex: 1; border: 0; background: white; }

.tabs { display: flex; gap: 2px; padding: 4px 8px; border-bottom: 1px solid var(--line); background: var(--panel); }
.tabs button { background: none; border: none; color: var(--muted); padding: 2px 8px; }
.tabs button.active { color: var(--text); border-bottom: 2px solid var(--accent); border-radius: 0; }
.tabs #clear { margin-left: auto; }
.log { flex: 1; overflow: auto; font: 12px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; padding: 4px 0; }
.log .row { display: grid; grid-template-columns: 64px 58px 36px 1fr; gap: 8px; padding: 1px 10px; border-bottom: 1px solid #1a1d22; }
.log .row pre { margin: 0; white-space: pre-wrap; word-break: break-word; font: inherit; }
.log .t, .log .v { color: var(--muted); }

.tab-body[hidden] { display: none; }
.terminal { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.terminal .log { padding: 6px 10px; }
.cmd { margin-bottom: 8px; }
.cmd .line { color: var(--text); }
.cmd .who { font-size: 11px; padding: 0 5px; border-radius: 8px; background: #232730; margin-right: 6px; }
.cmd .who.agent { color: var(--accent); }
.cmd .who.user { color: var(--info); }
.cmd .who.build { color: var(--warn, #d9a441); }
.cmd pre { margin: 2px 0 0; white-space: pre-wrap; word-break: break-word; font: inherit; color: #b9bec7; }
.cmd pre .err { color: var(--warn); }
.cmd .exit { color: var(--muted); font-size: 11px; }
.cmd .exit.fail { color: var(--bad); }
.terminal-input { display: flex; gap: 6px; align-items: center; padding: 6px 10px; border-top: 1px solid var(--line); font: 12px ui-monospace, SFMono-Regular, Menlo, monospace; }
.terminal-input input { flex: 1; background: none; border: none; outline: none; font: inherit; color: var(--text); }
.src { font-size: 11px; }
.src.server { color: var(--accent); }
.src.browser { color: var(--info); }
.src.build, .src.host { color: var(--muted); }
.lvl-warn pre { color: var(--warn); }
.lvl-error pre { color: var(--bad); }
.ok { color: var(--good); }
.fail { color: var(--bad); }

.chat { flex: 1; overflow: auto; padding: 8px 12px; display: flex; flex-direction: column; gap: 8px; }
.msg-user { align-self: flex-end; background: #23324a; border-radius: 10px; padding: 6px 10px; max-width: 85%; white-space: pre-wrap; }
.msg-text { white-space: pre-wrap; }
.tool { font: 12px ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--muted); border-left: 2px solid var(--line); padding-left: 8px; }
.tool .name { color: var(--text); }
.tool.done { border-color: var(--good); }
.tool.failed { border-color: var(--bad); }
.tool .result { display: block; color: var(--muted); white-space: pre-wrap; max-height: 3.2em; overflow: hidden; }
.busy { color: var(--accent); }
.prompt { display: flex; gap: 8px; padding: 8px; border-top: 1px solid var(--line); }
.prompt textarea { flex: 1; resize: none; background: #0d0f12; border: 1px solid var(--line); border-radius: 6px; padding: 6px 8px; }