:root {
  --indigo: #4f46e5; --indigo2: #6366f1; --indigo-lt: #eef0ff;
  --bg: #f5f6fc; --card: #fff; --line: #e5e7f2; --txt: #1f2350; --muted: #6b7194;
  --green: #16a34a; --green-lt: #e7f6ec; --amber: #d97706; --amber-lt: #fdf3e3;
  --red: #dc2626; --red-lt: #fdecec; --blue: #2563eb; --blue-lt: #e8f0fe;
  --radius: 14px;
}
* { box-sizing: border-box; margin: 0; }
body { font-family: 'Segoe UI', system-ui, sans-serif; background: var(--bg); color: var(--txt); }
a { color: var(--indigo); text-decoration: none; }
h1 { font-size: 1.6rem; font-weight: 700; } h2 { font-size: 1.05rem; font-weight: 700; }
h3 { font-size: .95rem; }
input, select, textarea { padding: 10px 12px; border: 1px solid var(--line); border-radius: 9px; font: inherit; background: #fff; color: var(--txt); width: 100%; }
input:focus, select:focus { outline: 2px solid var(--indigo-lt); border-color: var(--indigo); }
label { font-size: .8rem; font-weight: 600; color: var(--muted); display: block; margin: 10px 0 4px; }
button, .btn { display: inline-flex; align-items: center; gap: 6px; padding: 10px 18px; border-radius: 9px; border: none; font: inherit; font-weight: 600; cursor: pointer; background: var(--indigo); color: #fff; transition: .15s; }
button:hover, .btn:hover { background: var(--indigo2); }
button.ghost, .btn.ghost { background: transparent; color: var(--indigo); border: 1px solid var(--line); }
button.danger { background: var(--red); } button.warn { background: var(--amber); }
button.sm { padding: 6px 12px; font-size: .8rem; }
button:disabled { opacity: .5; cursor: default; }

/* layout */
.topnav { display: flex; align-items: center; gap: 28px; padding: 14px 32px; background: #fff; border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
.topnav .logo { font-weight: 800; font-size: 1.15rem; color: var(--txt); }
.topnav .logo b { color: var(--indigo); }
.topnav nav { display: flex; gap: 4px; flex: 1; }
.topnav nav a { padding: 8px 14px; border-radius: 8px; color: var(--muted); font-size: .9rem; font-weight: 600; }
.topnav nav a.active, .topnav nav a:hover { background: var(--indigo-lt); color: var(--indigo); }
.wrap { max-width: 1180px; margin: 0 auto; padding: 28px 20px; }
.grid { display: grid; gap: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.muted { color: var(--muted); font-size: .82rem; }
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: .72rem; font-weight: 700; }
.b-green { background: var(--green-lt); color: var(--green); } .b-amber { background: var(--amber-lt); color: var(--amber); }
.b-red { background: var(--red-lt); color: var(--red); } .b-blue { background: var(--blue-lt); color: var(--blue); }
.b-indigo { background: var(--indigo-lt); color: var(--indigo); } .b-gray { background: #eceef6; color: var(--muted); }
.bar { height: 8px; background: #eceef6; border-radius: 999px; overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--indigo); border-radius: 999px; }
.bar i.hot { background: var(--amber); }
.kv { display: flex; justify-content: space-between; padding: 7px 0; border-bottom: 1px dashed var(--line); font-size: .85rem; }
.kv:last-child { border: 0; }
table { width: 100%; border-collapse: collapse; font-size: .85rem; }
th { text-align: left; font-size: .72rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); padding: 8px 10px; border-bottom: 1px solid var(--line); }
td { padding: 10px; border-bottom: 1px solid #f0f1f8; vertical-align: middle; }
tr:last-child td { border: 0; }
code, pre, .mono { font-family: ui-monospace, 'Cascadia Code', Consolas, monospace; }
pre.codebox { background: #12132b; color: #c7d0ff; padding: 16px; border-radius: 10px; font-size: .8rem; overflow-x: auto; line-height: 1.6; position: relative; }
.apikey { font-family: ui-monospace, monospace; background: var(--indigo-lt); color: var(--indigo); padding: 8px 12px; border-radius: 8px; word-break: break-all; font-size: .85rem; }
.notice { padding: 12px 14px; border-radius: 10px; font-size: .83rem; display: flex; gap: 10px; align-items: flex-start; }
.n-warn { background: var(--amber-lt); color: #92580a; } .n-ok { background: var(--green-lt); color: var(--green); }
.n-info { background: var(--blue-lt); color: var(--blue); } .n-err { background: var(--red-lt); color: var(--red); }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 16px; flex-wrap: wrap; }
.tabs a, .tabs button { padding: 9px 16px; border: none; background: none; color: var(--muted); font-weight: 600; font-size: .88rem; border-bottom: 2px solid transparent; cursor: pointer; }
.tabs a.active, .tabs button.active { color: var(--indigo); border-bottom-color: var(--indigo); }
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat .v { font-size: 1.5rem; font-weight: 800; }
.stat .l { font-size: .75rem; color: var(--muted); }
.modal-bg { position: fixed; inset: 0; background: rgba(20,20,50,.5); display: flex; align-items: center; justify-content: center; z-index: 99; padding: 16px; }
.modal { background: #fff; border-radius: 16px; padding: 24px; max-width: 540px; width: 100%; max-height: 90vh; overflow-y: auto; }
.field-row { display: flex; gap: 10px; }
.field-row > * { flex: 1; }
.hidden { display: none !important; }
.right { text-align: right; }

/* lucide icons */
svg.lucide { width: 18px; height: 18px; stroke-width: 2; vertical-align: -3px; }
button svg.lucide, .btn svg.lucide, a svg.lucide, .sidebar a svg.lucide { width: 16px; height: 16px; vertical-align: -3px; }
.ic-box { width: 40px; height: 40px; border-radius: 10px; display: inline-flex; align-items: center; justify-content: center; }
.ic-box svg.lucide { width: 20px; height: 20px; }
.ic-indigo { background: var(--indigo-lt); color: var(--indigo); }
.ic-green { background: var(--green-lt); color: var(--green); }
.ic-blue { background: var(--blue-lt); color: var(--blue); }
.ic-amber { background: var(--amber-lt); color: var(--amber); }
@media (max-width: 760px) {
  .topnav { flex-wrap: wrap; gap: 10px; padding: 12px 16px; }
  .grid, .field-row { grid-template-columns: 1fr !important; display: grid; }
}