:root {
  color-scheme: light dark;
  --fg: #1a1a1a;
  --bg: #fafafa;
  --muted: #555;
  --border: #ddd;
  --accent: #2563eb;
  --accent-fg: #fff;
  --ok: #15803d;
  --err: #b91c1c;
  --warn: #b45309;
  --code-bg: #eef0f3;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e7e7e7;
    --bg: #111;
    --muted: #aaa;
    --border: #333;
    --accent: #3b82f6;
    --accent-fg: #fff;
    --ok: #4ade80;
    --err: #f87171;
    --warn: #fbbf24;
    --code-bg: #1f2329;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.45;
}
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; background: var(--code-bg); padding: 1px 6px; border-radius: 3px; }
.topbar {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}
.topbar h1 { font-size: 18px; margin: 0 0 6px 0; }
.origins { display: flex; flex-wrap: wrap; gap: 18px; font-size: 13px; color: var(--muted); }
main { padding: 16px 20px; display: flex; flex-direction: column; gap: 18px; }

.controls { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.controls button {
  padding: 7px 14px;
  border: 1px solid var(--border);
  background: var(--accent);
  color: var(--accent-fg);
  border-radius: 5px;
  cursor: pointer;
  font-size: 13px;
}
.controls button#reset, .controls button#select-all, .controls button#select-none, .controls button#copy {
  background: transparent;
  color: var(--fg);
}
.controls button:hover { filter: brightness(1.08); }
.controls .status { margin-left: 8px; color: var(--muted); font-size: 13px; }

.counters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 8px;
}
.counter {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
}
.counter .label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.counter .value { font-size: 22px; font-weight: 600; font-variant-numeric: tabular-nums; }
.counter.total { border-color: var(--accent); }
.counter.total .value { color: var(--accent); }

.scenarios { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px; }
.scenarios fieldset {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
}
.scenarios legend { padding: 0 6px; font-weight: 600; }
.scenario { display: flex; align-items: center; gap: 8px; padding: 4px 0; }
.scenario input[type="checkbox"] { width: 16px; height: 16px; }
.scenario .run-one {
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 8px;
  cursor: pointer;
  font-size: 11px;
  color: var(--fg);
}
.scenario .run-one:hover { background: var(--code-bg); }

.log-section h2 { font-size: 15px; margin: 0 0 6px; }
#log {
  list-style: decimal inside;
  background: var(--code-bg);
  border-radius: 6px;
  padding: 10px 14px;
  margin: 0;
  max-height: 360px;
  overflow: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
}
#log li { margin: 0; padding: 1px 0; white-space: pre-wrap; word-break: break-all; }
#log li.sent { color: var(--accent); }
#log li.got { color: var(--ok); }
#log li.failed { color: var(--err); }
#log li.info { color: var(--muted); }

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: #111; color: #fff;
  padding: 8px 14px; border-radius: 6px;
  font-size: 13px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.25);
  z-index: 100;
}
.banner {
  position: fixed; top: 0; left: 0; right: 0;
  padding: 10px 16px;
  background: var(--ok); color: #fff;
  text-align: center; font-weight: 600;
  z-index: 99;
}