:root {
  --bg: #f5f6f8; --card: #fff; --ink: #1c2330; --muted: #667085; --line: #e3e6ec;
  --accent: #2563eb; --accent-ink: #fff; --good: #137a43; --good-bg: #e4f6ec;
  --bad: #b42318; --bad-bg: #fdeceb; --warn: #8a5a00; --warn-bg: #fff4d6; --info-bg: #e8f0fe;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151b; --card: #1b2029; --ink: #e8ebf1; --muted: #98a2b3; --line: #2b3240;
    --accent: #5b8def; --good: #5fd08f; --good-bg: #143a27; --bad: #ff8f85; --bad-bg: #3f1d1a;
    --warn: #ffcf6b; --warn-bg: #3b2f10; --info-bg: #182744;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
h1 { font-size: 24px; margin: 20px 0 12px; }
h2 { font-size: 18px; margin: 0 0 12px; }
h3 { font-size: 15px; margin: 18px 0 8px; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }
code { background: var(--bg); padding: 1px 5px; border-radius: 4px; border: 1px solid var(--line); }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
.top { background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 52px; flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--ink); text-decoration: none; }
nav { display: flex; gap: 4px; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; padding: 6px 10px; border-radius: 6px; }
nav a:hover { background: var(--bg); color: var(--ink); }
nav a.on { color: var(--accent); background: var(--info-bg); }
main { padding-bottom: 32px; }
.foot { color: var(--muted); font-size: 12px; padding-bottom: 28px; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; margin: 0 0 16px; }
.card.flush { padding: 0; overflow: hidden; }
.card.narrow { max-width: 420px; margin: 48px auto; }
.pad { padding: 12px 16px; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.grid2 .card { margin: 0; }
.cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; }
.row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }

label { display: block; font-weight: 600; font-size: 13.5px; margin: 0 0 14px; }
label .small, label .muted { font-weight: 400; display: block; margin-top: 3px; }
label.check { font-weight: 400; display: flex; gap: 8px; align-items: flex-start; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=search], select, textarea {
  width: 100%; margin-top: 5px; padding: 9px 11px; font: inherit; color: var(--ink);
  background: var(--card); border: 1px solid var(--line); border-radius: 8px;
}
input[type=file] { margin-top: 6px; font: inherit; }
textarea { resize: vertical; font-family: inherit; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.row input[type=email], .row input[type=text], .row input[type=search] { margin-top: 0; }
details summary { cursor: pointer; font-weight: 600; }
details[open] summary { margin-bottom: 10px; }

.btn { display: inline-block; font: inherit; font-weight: 600; padding: 8px 14px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--card); color: var(--ink); cursor: pointer; text-decoration: none; }
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.danger { color: var(--bad); }
.btn.small { padding: 4px 10px; font-size: 13px; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

.alert { padding: 11px 14px; border-radius: 8px; margin: 0 0 14px; border: 1px solid transparent; }
.alert.ok { background: var(--good-bg); color: var(--good); }
.alert.err { background: var(--bad-bg); color: var(--bad); }
.alert.warn { background: var(--warn-bg); color: var(--warn); }
.alert.info { background: var(--info-bg); }
.help { background: var(--info-bg); border-radius: 8px; padding: 10px 14px; margin: 4px 0 14px; font-size: 13.5px; }

.badge { display: inline-block; font-size: 12px; font-weight: 700; padding: 2px 9px; border-radius: 99px; background: var(--bg); color: var(--muted); border: 1px solid var(--line); }
.badge.big { font-size: 14px; padding: 5px 14px; }
.badge.ok, .badge.s-completed, .badge.st-sent { background: var(--good-bg); color: var(--good); border-color: transparent; }
.badge.warn, .badge.s-paused { background: var(--warn-bg); color: var(--warn); border-color: transparent; }
.badge.s-running, .badge.st-sending, .badge.st-queued { background: var(--info-bg); color: var(--accent); border-color: transparent; }
.badge.st-failed, .badge.st-invalid { background: var(--bad-bg); color: var(--bad); border-color: transparent; }

.meter { height: 8px; background: var(--bg); border: 1px solid var(--line); border-radius: 99px; overflow: hidden; }
.meter.big { height: 14px; }
.meter span { display: block; height: 100%; background: var(--accent); transition: width .4s; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; }
.stat b { display: block; font-size: 24px; line-height: 1.2; }
.stat span { color: var(--muted); font-size: 12.5px; }
.stat.good b { color: var(--good); }
.stat.bad b { color: var(--bad); }

.tbl { width: 100%; border-collapse: collapse; }
.tbl th, .tbl td { text-align: left; padding: 9px 14px; border-top: 1px solid var(--line); vertical-align: top; }
.tbl th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); background: var(--bg); border-top: 0; }
.tbl .num { text-align: right; }
.tbl td.err { color: var(--bad); font-size: 13px; max-width: 360px; word-break: break-word; }
.tbl td.note { color: var(--muted); font-size: 13px; max-width: 360px; word-break: break-word; }
.card.flush { overflow-x: auto; }

.tabs { display: flex; gap: 4px; flex-wrap: wrap; }
.tabs button { font: inherit; background: none; border: 0; padding: 6px 12px; border-radius: 6px; color: var(--muted); cursor: pointer; }
.tabs button.on { background: var(--info-bg); color: var(--accent); font-weight: 600; }

.preview { white-space: pre-wrap; word-break: break-word; background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 12px; max-height: 320px; overflow: auto; }
.log { background: #0f1319; color: #cfd6e4; border-radius: 8px; padding: 10px 12px; max-height: 260px; overflow: auto; font-size: 12px; white-space: pre-wrap; word-break: break-all; margin-top: 8px; }
.spinner { display: inline-block; width: 13px; height: 13px; border: 2px solid var(--line); border-top-color: var(--accent); border-radius: 50%; animation: spin .7s linear infinite; vertical-align: -2px; margin-right: 6px; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (max-width: 600px) { h1 { font-size: 20px; } .tbl th, .tbl td { padding: 8px; } }