:root {
  --bg: #f5f4f1;
  --panel: #ffffff;
  --panel-2: #faf9f7;
  --text: #1c1c1e;
  --muted: #6e6e73;
  --line: #e5e3de;
  --accent: #2f5bff;
  --accent-text: #ffffff;
  --danger: #c62828;
  --ok: #1b7f3b;
  --warn: #9a6400;
  --radius: 12px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111113;
    --panel: #1a1a1d;
    --panel-2: #202024;
    --text: #ececef;
    --muted: #9b9ba3;
    --line: #2c2c31;
    --accent: #6d8bff;
    --accent-text: #0b0b0d;
    --danger: #ff7a70;
    --ok: #5fd38a;
    --warn: #f0b450;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 14px/1.5 system-ui, -apple-system, 'Segoe UI', sans-serif; }
a { color: var(--accent); text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
select { border: 1px solid var(--line); background: var(--panel); border-radius: 8px; padding: 5px 8px; max-width: 220px; }
button { cursor: pointer; border: 1px solid var(--line); background: var(--panel); border-radius: 8px; padding: 7px 12px; }
button:hover { border-color: var(--muted); }
button.primary { background: var(--accent); color: var(--accent-text); border-color: transparent; font-weight: 600; }
button.danger { color: var(--danger); }
button:disabled { opacity: .5; cursor: default; }
input, textarea { border: 1px solid var(--line); background: var(--panel); border-radius: 8px; padding: 8px 10px; width: 100%; }
input:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--accent) 40%, transparent); border-color: var(--accent); }
.muted { color: var(--muted); }
.mono { font-family: var(--mono); font-size: 12.5px; }

/* Top bar */
.topbar { display: flex; align-items: center; gap: 12px; padding: 12px 20px; border-bottom: 1px solid var(--line); background: var(--panel); }
.topbar .brand { font-weight: 700; letter-spacing: -.01em; }
.topbar .spacer { flex: 1; }

/* Client list */
.page { max-width: 880px; margin: 0 auto; padding: 28px 16px 60px; }
.page h1 { font-size: 22px; margin: 0 0 4px; letter-spacing: -.01em; }
.add { display: flex; gap: 8px; margin: 20px 0 24px; }
.add input { flex: 1; }
.cards { display: grid; gap: 10px; }
.card { display: flex; align-items: center; gap: 14px; padding: 14px 16px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); }
.card .name { font-weight: 600; font-size: 15px; }
.card .meta { color: var(--muted); font-size: 12.5px; }
.card .grow { flex: 1; min-width: 0; }
.card .actions { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--line); display: inline-block; margin-right: 6px; }
.dot.ready { background: var(--ok); }
.dot.working, .dot.starting { background: var(--warn); }
.empty { padding: 40px; text-align: center; color: var(--muted); border: 1px dashed var(--line); border-radius: var(--radius); }

.notice { background: var(--panel); border: 1px solid var(--accent); border-radius: var(--radius); padding: 14px 16px; margin-bottom: 20px; }
.notice code { font-family: var(--mono); background: var(--panel-2); padding: 2px 6px; border-radius: 6px; font-size: 14px; }

/* Workspace */
.ws { display: grid; grid-template-columns: 240px 1fr; grid-template-rows: auto 1fr; height: 100vh; }
.ws .topbar { grid-column: 1 / -1; }
.files { border-right: 1px solid var(--line); background: var(--panel); overflow: auto; padding: 10px 6px; }
.files h3, .side h3 { margin: 6px 8px 8px; font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); font-weight: 600; }
.tree { list-style: none; margin: 0; padding: 0 0 0 10px; }
.tree.root { padding-left: 0; }
.tree li > span { display: block; padding: 3px 8px; border-radius: 6px; cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 13px; }
.tree li > span:hover { background: var(--panel-2); }
.tree li > span.active { background: color-mix(in srgb, var(--accent) 14%, transparent); }
.tree .dir > span { color: var(--muted); }
.versions { list-style: none; margin: 0; padding: 0; }
.versions li { padding: 6px 8px; border-radius: 6px; font-size: 12.5px; display: flex; gap: 6px; align-items: baseline; }
.versions li:hover { background: var(--panel-2); }
.versions li .msg { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.versions li button { padding: 1px 6px; font-size: 11.5px; visibility: hidden; }
.versions li:hover button { visibility: visible; }

.main { display: grid; grid-template-rows: auto 1fr auto; min-height: 0; min-width: 0; }
.tabs { display: flex; gap: 4px; padding: 8px 12px 0; border-bottom: 1px solid var(--line); align-items: end; }
.tabs button { border: 0; border-bottom: 2px solid transparent; border-radius: 0; background: none; padding: 8px 10px; color: var(--muted); }
.tabs button.active { color: var(--text); border-bottom-color: var(--accent); }
.tabs .spacer { flex: 1; }
.view { min-height: 0; position: relative; background: var(--panel-2); }
.view iframe { width: 100%; height: 100%; border: 0; background: #fff; }
.view iframe#agentUi { background: #090a0f; }
.main.full { grid-template-rows: auto 1fr; }
.view pre { margin: 0; padding: 16px; height: 100%; overflow: auto; font-family: var(--mono); font-size: 12.5px; white-space: pre-wrap; word-break: break-word; }

.chat { border-top: 1px solid var(--line); background: var(--panel); display: grid; grid-template-rows: minmax(0, 260px) auto; }
.log { overflow: auto; padding: 12px 16px; display: flex; flex-direction: column; gap: 8px; }
.msg { max-width: 820px; }
.msg .who { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.msg .body { white-space: pre-wrap; word-break: break-word; }
.msg.admin .body { font-weight: 500; }
.msg.system .body { color: var(--danger); }
.msg .tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 4px; }
.tag { font-size: 11.5px; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); }
.tag.ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, transparent); }
.tag.fail { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, transparent); }
.confirm { border: 1px solid var(--warn); border-radius: 10px; padding: 10px 12px; background: color-mix(in srgb, var(--warn) 8%, transparent); }
.confirm pre { margin: 6px 0; max-height: 140px; overflow: auto; font-family: var(--mono); font-size: 12px; white-space: pre-wrap; }
.confirm .row { display: flex; gap: 6px; }
.prompt { display: flex; gap: 8px; padding: 10px 12px 12px; align-items: end; }
.prompt textarea { resize: none; min-height: 44px; max-height: 180px; }
.status { font-size: 12.5px; color: var(--muted); display: flex; align-items: center; }

.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login form { width: 100%; max-width: 340px; background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 28px; display: grid; gap: 12px; }
.login h1 { margin: 0; font-size: 20px; }
.error { color: var(--danger); margin: 0; }

@media (max-width: 760px) {
  .ws { grid-template-columns: 1fr; grid-template-rows: auto auto 1fr; }
  .files { max-height: 180px; border-right: 0; border-bottom: 1px solid var(--line); }
  .card { flex-wrap: wrap; }
}