:root {
  --bg: #f6f7f9; --card: #fff; --ink: #1c2430; --muted: #6b7686;
  --line: #e4e8ee; --accent: #2f6f4f; --accent-ink: #fff;
  --user: #eef4ff; --ai: #f4f6f8; --pii: #b3261e;
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
       background: var(--bg); color: var(--ink); }
.topbar { display: flex; align-items: center; gap: 20px; padding: 12px 20px;
          background: var(--card); border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; text-decoration: none; color: var(--ink); }
.topbar nav { display: flex; gap: 14px; }
.topbar nav a { text-decoration: none; color: var(--muted); }
.topbar nav a:hover { color: var(--ink); }
.topbar .who { margin-left: auto; color: var(--muted); font-size: 13px; }
.container { max-width: 1000px; margin: 24px auto; padding: 0 20px; }
h1 { font-size: 22px; margin: 0 0 6px; }
.muted { color: var(--muted); }
.crumb a, .filters a { text-decoration: none; color: var(--accent); }
.filters a.active { font-weight: 700; }
table { width: 100%; border-collapse: collapse; background: var(--card);
        border: 1px solid var(--line); border-radius: 8px; overflow: hidden; margin-top: 12px; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: #fafbfc; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); }
tr:last-child td { border-bottom: none; }
td a { color: var(--accent); text-decoration: none; }
.search, .filters { margin: 12px 0; }
.search input { padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; width: 320px; }
.search button, .btn, button[type=submit] { background: var(--accent); color: var(--accent-ink);
  border: 0; padding: 8px 14px; border-radius: 6px; cursor: pointer; text-decoration: none; display: inline-block; }
button.link { background: none; border: 0; color: var(--muted); cursor: pointer; padding: 0 0 0 8px; }
.login { max-width: 420px; margin: 80px auto; background: var(--card); padding: 32px;
         border: 1px solid var(--line); border-radius: 12px; text-align: center; }
.login .btn { margin-top: 16px; }
.denied { color: var(--pii); }
.foot { text-align: center; color: var(--muted); font-size: 12px; padding: 24px; }

.thread { margin-top: 16px; display: flex; flex-direction: column; gap: 10px; }
.msg { border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; }
.msg.user { background: var(--user); }
.msg.ai { background: var(--ai); }
.msg-meta { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.msg-meta .role { font-weight: 700; color: var(--ink); }
.msg-text { white-space: pre-wrap; word-break: break-word; }

.tag { display: inline-block; font-size: 11px; background: #eef0f3; color: #333;
       padding: 1px 6px; border-radius: 4px; margin-right: 4px; }
.tag.pii { background: #fde8e6; color: var(--pii); }
.excerpt { max-width: 380px; font-size: 13px; }
tr.sev-high td { background: #fff6f5; }

.login .divider { color: var(--muted); font-size: 12px; margin: 18px 0 12px; text-transform: uppercase; letter-spacing: .05em; }
.login form.local { display: flex; flex-direction: column; gap: 10px; }
.login form.local input { padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; font-size: 14px; }
.login form.local .btn { margin-top: 4px; }
.login .hint { color: var(--muted); font-size: 12px; margin-top: 14px; }