:root {
  --bg: #f6f7fb; --card: #fff; --ink: #161a2b; --muted: #636b84; --line: #e3e6ef;
  --brand: #1f3fff; --brand-ink: #fff; --ok: #0f7b4b; --ok-bg: #e7f6ee; --err: #b42318; --err-bg: #fdecea;
  --warn-bg: #fff6e0; --radius: 12px;
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--ink);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 24px; margin: 0 0 4px; }
h2 { font-size: 18px; margin: 0 0 12px; }
h3 { font-size: 15px; margin: 16px 0 6px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

.top { background: var(--ink); color: #fff; }
.top .in { max-width: 1100px; margin: 0 auto; padding: 12px 16px; display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }
.top .brand { font-weight: 700; color: #fff; margin-right: auto; }
.top a, .top button.link { color: #cfd5ff; font: inherit; }
.top form { margin: 0; }
button.link { background: none; border: 0; padding: 0; cursor: pointer; }

main { max-width: 1100px; margin: 0 auto; padding: 24px 16px 60px; }
.head { display: flex; justify-content: space-between; align-items: end; gap: 12px; flex-wrap: wrap; margin-bottom: 18px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin-bottom: 18px; }
.narrow { max-width: 420px; margin: 40px auto; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
@media (max-width: 700px) { .two { grid-template-columns: 1fr; } }

label { display: block; font-weight: 600; font-size: 13px; margin: 12px 0 4px; }
label.inline { display: inline-flex; gap: 6px; align-items: center; font-weight: 500; margin: 12px 0 0; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=url], select, textarea {
  width: 100%; padding: 9px 11px; border: 1px solid var(--line); border-radius: 8px; font: inherit; background: #fff; color: var(--ink);
}
textarea { min-height: 110px; resize: vertical; }
textarea.big { min-height: 320px; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13px; }
input[type=color] { width: 60px; height: 38px; border: 1px solid var(--line); border-radius: 8px; padding: 2px; }
.hint { font-size: 12.5px; color: var(--muted); margin-top: 4px; }

.btn { display: inline-block; background: var(--brand); color: var(--brand-ink); border: 0; padding: 9px 16px; border-radius: 8px;
  font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; }
.btn:hover { filter: brightness(1.1); text-decoration: none; }
.btn.ghost { background: transparent; color: var(--brand); border: 1px solid var(--line); }
.btn.danger { background: var(--err); }
.btn.sm { padding: 5px 10px; font-size: 13px; }
.actions { margin-top: 16px; display: flex; gap: 10px; flex-wrap: wrap; }

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 12px; }
.flash.ok { background: var(--ok-bg); color: var(--ok); }
.flash.err { background: var(--err-bg); color: var(--err); }
.note { background: var(--warn-bg); padding: 10px 14px; border-radius: 8px; font-size: 13.5px; }

.pill { display: inline-block; padding: 2px 9px; border-radius: 99px; font-size: 12px; font-weight: 600; background: #eef0f7; color: var(--muted); }
.pill.on { background: var(--ok-bg); color: var(--ok); }
.pill.off { background: var(--err-bg); color: var(--err); }
.pill.new { background: #e8ecff; color: var(--brand); }

.stats { display: flex; gap: 18px; margin: 12px 0; flex-wrap: wrap; }
.stats div b { display: block; font-size: 20px; }
.stats div span { font-size: 12px; color: var(--muted); }
.meter { height: 8px; background: #eef0f7; border-radius: 99px; overflow: hidden; margin-top: 6px; }
.meter i { display: block; height: 100%; background: var(--brand); }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 18px; flex-wrap: wrap; }
.tabs a { padding: 9px 14px; color: var(--muted); border-bottom: 2px solid transparent; font-weight: 600; }
.tabs a.active, .tabs a:hover { color: var(--ink); border-color: var(--brand); text-decoration: none; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 9px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.scroll { overflow-x: auto; }
pre.code { background: #10142a; color: #e7eaff; padding: 14px; border-radius: 8px; overflow-x: auto; font-size: 13px; white-space: pre-wrap; word-break: break-all; }

.chatlog { display: flex; flex-direction: column; gap: 8px; }
.bubble { max-width: 80%; padding: 9px 13px; border-radius: 12px; white-space: pre-wrap; word-wrap: break-word; }
.bubble.visitor { align-self: flex-end; background: var(--brand); color: #fff; }
.bubble.agent { align-self: flex-start; background: #fff; border: 1px solid var(--line); }
.bubble.tool { align-self: center; background: var(--warn-bg); font-size: 12.5px; font-family: ui-monospace, monospace; }