:root {
  --bg: #f4f6fb;
  --surface: #ffffff;
  --border: #dbe1ee;
  --text: #17203a;
  --muted: #62708c;
  --primary: #1b4fd8;
  --danger: #c22b2b;
  --ok: #14783e;
  --bad: #a05c0a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 12px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.brand { font-weight: 600; }

.nav { display: flex; gap: 4px; flex: 1; }
.nav a {
  padding: 8px 12px;
  border-radius: 6px;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}
.nav a.active, .nav a:hover { background: var(--bg); color: var(--text); }

.userbox { display: flex; align-items: center; gap: 12px; font-size: 14px; color: var(--muted); }

.hidden { display: none !important; }

.app { max-width: 960px; margin: 32px auto; padding: 0 16px; }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
}

.panel-narrow { max-width: 360px; margin: 64px auto; }

h1 { font-size: 20px; margin: 0 0 16px; }

.form { display: flex; flex-direction: column; gap: 12px; }
.form-inline { flex-direction: row; margin-bottom: 16px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 8px; margin-bottom: 8px; align-items: center; }

label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }

input, select {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
}

.btn {
  padding: 8px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: pointer;
  font-size: 14px;
}
.btn-primary { background: var(--primary); border-color: var(--primary); color: white; }
.btn-danger { color: var(--danger); border-color: var(--danger); }
.btn-ghost { background: transparent; border-color: transparent; }

.table { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: 14px; }
.table th, .table td { text-align: left; padding: 8px; border-bottom: 1px solid var(--border); }

.grid { display: flex; gap: 12px; flex-wrap: wrap; margin: 16px 0; }
.stat { border: 1px solid var(--border); border-radius: 6px; padding: 10px 14px; min-width: 120px; }
.stat-key { font-size: 11px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.stat-val { font-size: 15px; font-weight: 600; }
.stat-ok .stat-val { color: var(--ok); }
.stat-bad .stat-val { color: var(--bad); }

.linklist { line-height: 2; }

.subhead { font-size: 14px; margin: 20px 0 8px; color: var(--muted); }

.error { color: var(--danger); font-size: 13px; }
.hint { color: var(--muted); font-size: 13px; }

.chat-panel { display: flex; flex-direction: column; height: calc(100vh - 160px); }
.chat-toolbar { display: flex; gap: 16px; align-items: flex-end; flex-wrap: wrap; }
.chat-toolbar .btn { margin-bottom: 1px; }
.chat-messages {
  flex: 1; overflow-y: auto; margin: 16px 0; padding: 12px;
  border: 1px solid var(--border); border-radius: 8px; background: var(--bg);
  display: flex; flex-direction: column; gap: 10px;
}
.chat-msg { max-width: 80%; padding: 10px 14px; border-radius: 10px; line-height: 1.5; white-space: pre-wrap; word-break: break-word; font-size: 14px; }
.chat-msg.user { align-self: flex-end; background: var(--primary); color: white; border-radius: 10px 10px 2px 10px; }
.chat-msg.assistant { align-self: flex-start; background: var(--surface); border: 1px solid var(--border); border-radius: 10px 10px 10px 2px; }
.chat-msg .feedback { margin-top: 6px; display: flex; gap: 4px; }
.chat-msg .feedback button { background: transparent; border: none; cursor: pointer; font-size: 14px; opacity: .5; padding: 2px 4px; }
.chat-msg .feedback button:hover, .chat-msg .feedback button.active { opacity: 1; }
.chat-form { align-items: flex-end; }
.chat-form textarea { flex: 1; padding: 10px; border: 1px solid var(--border); border-radius: 6px; font-family: inherit; font-size: 14px; resize: none; }