:root {
  --bg: #0b0e14; --panel: #141925; --panel2: #1b2230; --border: #28303f;
  --text: #e6e9ef; --muted: #8b95a7; --primary: #4f8cff; --primary-h: #6ea0ff;
  --danger: #ef4444; --ok: #22c55e; --amber: #f59e0b; --radius: 10px;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 14px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}
.center { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.muted { color: var(--muted); }
.row { display: flex; gap: 10px; align-items: center; }
.col { display: flex; flex-direction: column; gap: 6px; }
.wrap { max-width: 1000px; margin: 0 auto; padding: 20px; }
.grow { flex: 1; }
.spacer { flex: 1; }

button {
  background: var(--primary); color: #fff; border: 0; border-radius: 8px;
  padding: 8px 14px; font-size: 14px; cursor: pointer; font-weight: 500;
}
button:hover { background: var(--primary-h); }
button:disabled { opacity: .5; cursor: not-allowed; }
button.ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
button.ghost:hover { background: var(--panel2); }
button.danger { background: transparent; color: var(--danger); border: 1px solid transparent; padding: 6px 8px; }
button.danger:hover { background: rgba(239,68,68,.12); }
button.sm { padding: 5px 10px; font-size: 13px; }
button.icon { padding: 6px 8px; }

input, textarea, select {
  background: var(--panel2); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 10px; font: inherit; width: 100%;
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--primary); }
textarea { resize: vertical; min-height: 80px; }
label { font-size: 12px; color: var(--muted); }

.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.card + .card { margin-top: 12px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
@media (max-width: 640px) { .grid2, .grid3 { grid-template-columns: 1fr; } }

.badge { display: inline-block; font-size: 11px; padding: 2px 8px; border-radius: 999px; background: var(--panel2); border: 1px solid var(--border); color: var(--muted); }
.badge.primary { background: rgba(79,140,255,.15); color: var(--primary-h); border-color: transparent; }

.header { display: flex; align-items: center; gap: 12px; padding: 14px 20px; border-bottom: 1px solid var(--border); background: var(--panel); }
.header h1 { font-size: 18px; margin: 0; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin: 16px 0; }
.tab { padding: 8px 14px; cursor: pointer; color: var(--muted); border-bottom: 2px solid transparent; }
.tab.active { color: var(--text); border-bottom-color: var(--primary); }

.modal-bg { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: flex; align-items: center; justify-content: center; padding: 20px; z-index: 50; }
.modal { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); width: 100%; max-width: 540px; max-height: 90vh; overflow-y: auto; padding: 20px; }
.modal h3 { margin: 0 0 4px; }

.toast { position: fixed; bottom: 20px; right: 20px; background: var(--panel2); border: 1px solid var(--border); border-left: 3px solid var(--ok); padding: 12px 16px; border-radius: 8px; z-index: 100; }
.toast.err { border-left-color: var(--danger); }

.chat { height: 440px; overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 10px; }
.msg { max-width: 78%; padding: 8px 12px; border-radius: 10px; white-space: pre-wrap; }
.msg.user { align-self: flex-end; background: var(--primary); color: #fff; }
.msg.assistant { align-self: flex-start; background: var(--panel2); }
.trace { font-size: 11px; color: var(--muted); margin-top: 3px; }
.err-text { color: var(--danger); font-size: 12px; }
.list-item { display: flex; align-items: center; gap: 10px; padding: 12px; border: 1px solid var(--border); border-radius: 8px; }
.list-item + .list-item { margin-top: 8px; }
.switch { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; }
.switch input { width: auto; }