:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #1c2024;
  --muted: #60646c;
  --border: #e0e1e6;
  --accent: #c2410c;
  --accent-text: #ffffff;
  --ok: #18794e;
  --warn: #ad5700;
  --err: #cd2b31;
  --code-bg: #f1f2f4;
  --radius: 8px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111113;
    --panel: #18191b;
    --text: #edeef0;
    --muted: #a0a3ab;
    --border: #2e3135;
    --accent: #f97316;
    --accent-text: #111113;
    --ok: #3dd68c;
    --warn: #ffc53d;
    --err: #ff9592;
    --code-bg: #212225;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 14px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
[hidden] { display: none !important; }
button, input, select, textarea { font: inherit; color: inherit; }
.muted { color: var(--muted); }
.error { color: var(--err); }

.btn { border: 1px solid var(--border); background: var(--panel); border-radius: 6px; padding: 7px 12px; cursor: pointer; }
.btn:hover { border-color: var(--muted); }
.btn:disabled { opacity: .55; cursor: default; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
.btn-primary:hover { filter: brightness(1.06); border-color: var(--accent); }
.btn-sm { padding: 4px 10px; font-size: 13px; }
.link { background: none; border: 0; padding: 0; color: var(--accent); cursor: pointer; text-decoration: none; font-size: 13px; }
.link.danger { color: var(--err); }

.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 16px; }
.logo { width: 24px; height: 24px; border-radius: 6px; background: var(--accent); color: var(--accent-text); display: grid; place-items: center; font-size: 14px; }

/* login */
.login { min-height: 100%; display: grid; place-items: center; padding: 16px; }
.login-card { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 32px; width: min(380px, 100%); display: grid; gap: 16px; justify-items: start; }
.login-card p { margin: 0; }

/* layout */
.app { display: grid; grid-template-columns: 240px 1fr; height: 100%; }
.sidebar { background: var(--panel); border-right: 1px solid var(--border); display: flex; flex-direction: column; min-height: 0; }
.side-head { display: flex; justify-content: space-between; align-items: center; padding: 14px; border-bottom: 1px solid var(--border); }
.project-list { flex: 1; overflow: auto; padding: 8px; display: grid; gap: 2px; align-content: start; }
.project-item { text-align: left; border: 0; background: none; padding: 8px 10px; border-radius: 6px; cursor: pointer; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.project-item:hover { background: var(--bg); }
.project-item.active { background: var(--bg); font-weight: 600; }
.side-foot { border-top: 1px solid var(--border); padding: 12px 14px; display: grid; gap: 8px; font-size: 12px; }
.status-lines { display: grid; gap: 2px; }
.status-lines .bad { color: var(--warn); }
.me { display: flex; justify-content: space-between; gap: 8px; overflow: hidden; }
.me span { overflow: hidden; text-overflow: ellipsis; }

.workspace { min-width: 0; min-height: 0; display: flex; }
.empty-state { margin: auto; text-align: center; padding: 16px; }
.empty-state h1 { margin: 0 0 6px; font-size: 22px; }
.project { flex: 1; display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.project-head { display: flex; align-items: center; gap: 12px; padding: 10px 14px; border-bottom: 1px solid var(--border); background: var(--panel); }
.name-input { border: 1px solid transparent; background: none; font-weight: 600; font-size: 16px; padding: 4px 6px; border-radius: 6px; min-width: 0; flex: 1; }
.name-input:hover, .name-input:focus { border-color: var(--border); outline: none; }
.tabs { display: flex; gap: 2px; background: var(--bg); padding: 2px; border-radius: 7px; }
.tab { border: 0; background: none; padding: 4px 12px; border-radius: 5px; cursor: pointer; font-size: 13px; }
.tab.active { background: var(--panel); box-shadow: 0 1px 2px rgba(0,0,0,.08); font-weight: 600; }

.split { flex: 1; display: grid; grid-template-columns: minmax(320px, 420px) 1fr; min-height: 0; }
.chat { display: flex; flex-direction: column; border-right: 1px solid var(--border); min-height: 0; background: var(--panel); }
.runs { flex: 1; overflow: auto; padding: 14px; display: flex; flex-direction: column; gap: 14px; }
.run { display: grid; gap: 6px; }
.bubble-user { justify-self: end; background: var(--bg); border: 1px solid var(--border); border-radius: 10px 10px 2px 10px; padding: 8px 11px; max-width: 90%; white-space: pre-wrap; word-break: break-word; }
.bubble-ai { border-left: 3px solid var(--border); padding: 2px 0 2px 10px; white-space: pre-wrap; word-break: break-word; }
.run-meta { font-size: 12px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.run.failed .bubble-ai { border-left-color: var(--err); }
.run.ok .bubble-ai { border-left-color: var(--ok); }
.stage { display: inline-flex; align-items: center; gap: 6px; }
.spinner { width: 10px; height: 10px; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
details.log summary { cursor: pointer; font-size: 12px; color: var(--muted); }
details.log pre { background: var(--code-bg); padding: 8px; border-radius: 6px; font-size: 12px; overflow: auto; max-height: 240px; margin: 6px 0 0; white-space: pre-wrap; }
.fix-btn { justify-self: start; }

.prompt-form { border-top: 1px solid var(--border); padding: 12px; display: grid; gap: 8px; }
.prompt-form textarea { width: 100%; resize: vertical; min-height: 64px; border: 1px solid var(--border); border-radius: var(--radius); padding: 8px 10px; background: var(--bg); }
.prompt-form textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.prompt-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.prompt-row #send { margin-left: auto; }
.sel { display: inline-flex; gap: 6px; align-items: center; font-size: 12px; color: var(--muted); }
.sel select { border: 1px solid var(--border); border-radius: 6px; padding: 3px 6px; background: var(--panel); color: var(--text); }

.pane { min-width: 0; min-height: 0; display: flex; flex-direction: column; }
.tab-body { flex: 1; display: flex; flex-direction: column; min-height: 0; position: relative; }
.preview-bar { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-bottom: 1px solid var(--border); background: var(--panel); }
.spacer { flex: 1; }
.pill { font-size: 12px; padding: 2px 8px; border-radius: 999px; background: var(--bg); border: 1px solid var(--border); }
.pill.running { color: var(--ok); }
.pill.error, .pill.expired, .pill.stopped { color: var(--warn); }
#preview { flex: 1; border: 0; width: 100%; background: #fff; }
.preview-empty { position: absolute; inset: 45px 0 0; display: grid; place-items: center; padding: 16px; text-align: center; }

.files { flex: 1; display: grid; grid-template-columns: 220px 1fr; min-height: 0; }
.file-list { list-style: none; margin: 0; padding: 8px; overflow: auto; border-right: 1px solid var(--border); background: var(--panel); }
.file-list button { width: 100%; text-align: left; border: 0; background: none; padding: 4px 8px; border-radius: 5px; cursor: pointer; font: 12px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-list button:hover, .file-list button.active { background: var(--bg); }
.file-view { margin: 0; padding: 12px 14px; overflow: auto; font: 12px/1.55 ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--code-bg); }

@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; grid-template-rows: auto 1fr; }
  .sidebar { border-right: 0; border-bottom: 1px solid var(--border); max-height: 38vh; }
  .split { grid-template-columns: 1fr; grid-template-rows: minmax(300px, 1fr) minmax(360px, 1fr); }
  .chat { border-right: 0; border-bottom: 1px solid var(--border); }
  .files { grid-template-columns: 1fr; grid-template-rows: 140px 1fr; }
  .file-list { border-right: 0; border-bottom: 1px solid var(--border); }
  .project-head { flex-wrap: wrap; }
}