:root {
  --bg: #0f1117;
  --panel: #161923;
  --panel-2: #1c2029;
  --line: #262b38;
  --fg: #e6e9ef;
  --muted: #8b93a7;
  --accent: #7aa2ff;
  --accent-dim: #2b3a63;
  --ok: #56d364;
  --warn: #e3b341;
  --err: #f47067;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 14px/1.55 ui-sans-serif, -apple-system, "Segoe UI", Roboto, sans-serif;
}
button, input, select, textarea { font: inherit; color: inherit; }
.muted { color: var(--muted); }
.spacer { flex: 1; }

/* ---------- login ---------- */
.login-body { display: grid; place-items: center; }
.login-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 32px;
  width: min(360px, 92vw);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.login-card h1 { margin: 0; font-size: 24px; letter-spacing: 0.5px; }
.login-card p { margin: 0 0 10px; font-size: 13px; }
.login-card label { font-size: 12px; color: var(--muted); }
.login-card input {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
}
.login-card input:focus { outline: none; border-color: var(--accent); }
.login-card button {
  margin-top: 6px;
  background: var(--accent);
  color: #0d1017;
  border: 0;
  border-radius: 8px;
  padding: 10px;
  font-weight: 600;
  cursor: pointer;
}
.login-card button:disabled { opacity: 0.6; cursor: default; }
.error {
  color: var(--err);
  font-size: 13px;
  border: 1px solid #472; border-color: #5a2b2b;
  background: #2a1a1a;
  border-radius: 8px;
  padding: 8px 10px;
}

/* ---------- chrome ---------- */
.topbar {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}
.brand { font-weight: 700; letter-spacing: 0.5px; }
.biz-select {
  background: var(--bg); border: 1px solid var(--line);
  border-radius: 8px; padding: 6px 10px; min-width: 180px;
}
.key-badge {
  font-size: 12px; color: var(--warn);
  border: 1px solid #4a3d1c; background: #241f10;
  padding: 4px 9px; border-radius: 999px;
}
button.ghost {
  background: transparent; border: 1px solid var(--line);
  border-radius: 8px; padding: 6px 12px; cursor: pointer;
}
button.ghost:hover { border-color: var(--accent); color: var(--accent); }

.layout { display: flex; height: calc(100vh - 53px); }
.sidebar {
  width: 190px; flex: none; padding: 14px 10px;
  border-right: 1px solid var(--line); background: var(--panel);
  display: flex; flex-direction: column; gap: 4px;
}
.nav {
  text-align: left; background: transparent; border: 0;
  border-radius: 8px; padding: 9px 12px; cursor: pointer; color: var(--muted);
}
.nav:hover { background: var(--panel-2); color: var(--fg); }
.nav.active { background: var(--accent-dim); color: var(--fg); font-weight: 600; }
main { flex: 1; overflow-y: auto; padding: 22px 26px; }
.loading { color: var(--muted); }

h2.view-title { margin: 0 0 4px; font-size: 20px; }
.view-sub { color: var(--muted); margin: 0 0 20px; font-size: 13px; }
.row { display: flex; align-items: center; gap: 10px; }

/* ---------- cards ---------- */
.stat-grid {
  display: grid; gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  margin-bottom: 24px;
}
.stat {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 12px; padding: 14px 16px;
}
.stat .n { font-size: 26px; font-weight: 700; }
.stat .l { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.6px; }

.card-grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 12px; padding: 14px 16px;
}
.card h3 { margin: 0 0 4px; font-size: 15px; }
.card .meta { color: var(--muted); font-size: 12px; }
.card .desc { margin: 8px 0 0; opacity: 0.9; font-size: 13px; }
.card.clickable { cursor: pointer; }
.card.clickable:hover { border-color: var(--accent); }

.tag {
  display: inline-block; border: 1px solid var(--line); border-radius: 6px;
  padding: 1px 7px; margin: 3px 4px 0 0; font-size: 11px; color: var(--muted);
}

/* ---------- agent tree ---------- */
.agent-row {
  display: flex; align-items: flex-start; gap: 12px;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 10px; padding: 12px 14px; margin-bottom: 8px;
}
.agent-row .grow { flex: 1; min-width: 0; }
.agent-row .name { font-weight: 600; }
.agent-row .sub { color: var(--muted); font-size: 12px; }
.depth-1 { margin-left: 26px; }
.depth-2 { margin-left: 52px; }
.depth-3 { margin-left: 78px; }
.btn-mini {
  background: transparent; border: 1px solid var(--line); color: var(--muted);
  border-radius: 6px; padding: 3px 9px; cursor: pointer; font-size: 12px;
}
.btn-mini:hover { color: var(--fg); border-color: var(--accent); }
.btn-mini.danger:hover { color: var(--err); border-color: var(--err); }

button.primary {
  background: var(--accent); color: #0d1017; border: 0;
  border-radius: 8px; padding: 8px 14px; font-weight: 600; cursor: pointer;
}
button.primary:disabled { opacity: 0.55; cursor: default; }

/* ---------- modal ---------- */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(0, 0, 0, 0.6);
  display: grid; place-items: center; padding: 20px; z-index: 20;
}
/* `display: grid` above outranks the UA rule for [hidden], so the backdrop
   would stay laid out and swallow clicks on the page beneath it. */
.modal-backdrop[hidden] { display: none; }
.modal {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 14px; padding: 22px; width: min(560px, 96vw);
  max-height: 90vh; overflow-y: auto;
}
.modal h3 { margin: 0 0 14px; font-size: 17px; }
.field { display: flex; flex-direction: column; gap: 5px; margin-bottom: 12px; }
.field label { font-size: 12px; color: var(--muted); }
.field input, .field select, .field textarea {
  background: var(--bg); border: 1px solid var(--line);
  border-radius: 8px; padding: 9px 11px; width: 100%;
}
.field textarea { min-height: 90px; resize: vertical; font-family: ui-monospace, Menlo, monospace; font-size: 13px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 6px; }

/* ---------- chat ---------- */
.chat-wrap { display: flex; flex-direction: column; height: 100%; }
.chat-log { flex: 1; overflow-y: auto; padding-right: 6px; }
.msg { margin-bottom: 14px; max-width: 780px; }
.msg .who { font-size: 12px; color: var(--muted); margin-bottom: 3px; }
.msg .body {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 10px; padding: 10px 13px; white-space: pre-wrap; word-wrap: break-word;
}
.msg.user .body { background: var(--accent-dim); border-color: #35497a; }
.msg.event .body {
  background: transparent; border-style: dashed; color: var(--muted); font-size: 13px;
}
.chat-input { display: flex; gap: 8px; padding-top: 12px; border-top: 1px solid var(--line); }
.chat-input textarea {
  flex: 1; background: var(--panel); border: 1px solid var(--line);
  border-radius: 10px; padding: 10px 12px; min-height: 46px; max-height: 180px; resize: vertical;
}
.chat-input textarea:focus { outline: none; border-color: var(--accent); }
.empty { color: var(--muted); padding: 30px 0; }
.banner {
  border: 1px solid #4a3d1c; background: #241f10; color: var(--warn);
  border-radius: 10px; padding: 10px 14px; margin-bottom: 18px; font-size: 13px;
}