:root {
  --bg: #f6f7f9; --surface: #ffffff; --text: #16191f; --muted: #5f6b7a; --line: #e2e6ea;
  --brand: #1f4fd8; --brand-hover: #173fb0; --danger: #c62828; --ok: #1b7f3b; --warn: #a15c00;
  --radius: 10px; --shadow: 0 1px 2px rgba(16,24,40,.06), 0 1px 3px rgba(16,24,40,.1);
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1216; --surface: #171b21; --text: #e8ebef; --muted: #9aa5b1; --line: #2a313a;
          --brand: #6d8dff; --brand-hover: #8aa3ff; --danger: #ff6b6b; --ok: #4cc47a; --warn: #f2b35a; }
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; color: var(--text); background: var(--bg); min-height: 100vh; }
a { color: var(--brand); text-decoration: none; } a:hover { text-decoration: underline; }
header.top { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; border-bottom: 1px solid var(--line); background: var(--surface); }
header.top .brand { font-weight: 700; letter-spacing: .2px; color: var(--text); }
header.top nav a { margin-left: 18px; color: var(--muted); } header.top nav a.active, header.top nav a:hover { color: var(--text); text-decoration: none; }
main { max-width: 1040px; margin: 0 auto; padding: 24px 16px; }
.center { max-width: 420px; margin: 48px auto; }
.card { overflow-x: auto; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; }
.card + .card { margin-top: 20px; }
h1 { font-size: 22px; margin: 0 0 6px; } h2 { font-size: 17px; margin: 0 0 12px; }
p.muted, .muted { color: var(--muted); } p.small, .small { font-size: 13px; }
label { display: block; font-size: 13px; font-weight: 600; margin: 14px 0 6px; }
input[type=text], input[type=email], input[type=password], input[type=tel], input[type=number], input[type=search] {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--text); font-size: 15px; }
input:focus { outline: 2px solid var(--brand); outline-offset: 0; border-color: transparent; }
.row { display: flex; gap: 12px; } .row > * { flex: 1; }
button, .btn { display: inline-block; border: 1px solid transparent; border-radius: 8px; padding: 10px 16px; font-size: 15px; font-weight: 600; cursor: pointer; background: var(--brand); color: #fff; }
button:hover, .btn:hover { background: var(--brand-hover); text-decoration: none; }
button:disabled { opacity: .6; cursor: default; }
button.secondary, .btn.secondary { background: transparent; color: var(--text); border-color: var(--line); }
button.secondary:hover { background: var(--bg); }
button.danger { background: transparent; color: var(--danger); border-color: var(--danger); } button.danger:hover { background: rgba(198,40,40,.08); }
button.small { padding: 6px 10px; font-size: 13px; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.msg { margin: 14px 0 0; padding: 10px 12px; border-radius: 8px; font-size: 14px; display: none; }
.msg.error { display: block; background: rgba(198,40,40,.08); color: var(--danger); }
.msg.ok { display: block; background: rgba(27,127,59,.1); color: var(--ok); }
.msg.warn { display: block; background: rgba(161,92,0,.1); color: var(--warn); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; overflow-wrap: anywhere; }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .4px; }
tr.link { cursor: pointer; } tr.link:hover td { background: var(--bg); }
.pill { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--bg); border: 1px solid var(--line); color: var(--muted); }
.pill.ok { color: var(--ok); } .pill.bad { color: var(--danger); } .pill.brand { color: var(--brand); }
dl.kv { display: grid; grid-template-columns: 160px 1fr; gap: 8px 12px; margin: 0; } dl.kv dt { color: var(--muted); } dl.kv dd { margin: 0; word-break: break-all; }
.toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; } .toolbar input { flex: 1; min-width: 220px; }
.admin { display: grid; grid-template-columns: 200px 1fr; gap: 24px; }
.admin aside a { display: block; padding: 8px 10px; border-radius: 8px; color: var(--muted); }
.admin aside a.active, .admin aside a:hover { background: var(--surface); color: var(--text); text-decoration: none; border: 1px solid var(--line); }
.secret { font: 600 18px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; padding: 12px; background: var(--bg); border: 1px dashed var(--line); border-radius: 8px; word-break: break-all; }
code { font: 13px ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--bg); padding: 1px 5px; border-radius: 4px; }
@media (max-width: 720px) { .admin { grid-template-columns: 1fr; } .admin aside { display: flex; gap: 6px; flex-wrap: wrap; } .row { flex-direction: column; gap: 0; } dl.kv { grid-template-columns: 1fr; } }