:root {
  --bg: #f4f6f9;
  --card: #fff;
  --text: #1c2430;
  --muted: #6b7686;
  --border: #dde2e9;
  --accent: #229ed9;
  --danger: #d64545;
  --ok: #2e9d5b;
  --warn: #c98a12;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12161c;
    --card: #1b2129;
    --text: #e6eaf0;
    --muted: #8d97a6;
    --border: #2c3440;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 16px 24px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}
h1 { font-size: 1.25rem; margin: 0; }
h2 { font-size: 1.05rem; margin: 0 0 12px; }
main { max-width: 860px; margin: 24px auto; padding: 0 16px; display: grid; gap: 20px; }
main.narrow { max-width: 420px; }
main[hidden] { display: none; }
.header-right { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.header-right[hidden] { display: none; }
button:disabled { opacity: .6; cursor: default; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 20px; }
label { display: flex; flex-direction: column; gap: 6px; font-size: .9rem; color: var(--muted); margin-bottom: 12px; flex: 1; }
input, select, textarea {
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
}
textarea { resize: vertical; }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; }
.row > button { margin-bottom: 12px; }
.actions { display: flex; gap: 8px; }
button {
  font: inherit;
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}
button.secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
button.danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
button.small { padding: 4px 10px; font-size: .85rem; }
.hint { color: var(--muted); font-size: .9rem; margin-top: 0; }
.item {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--border);
}
.item:first-child { border-top: none; }
.item .text { white-space: pre-wrap; word-break: break-word; margin: 4px 0; }
.item .meta { color: var(--muted); font-size: .85rem; }
.item .error { color: var(--danger); font-size: .85rem; }
.item .buttons { display: flex; gap: 6px; flex-wrap: wrap; align-items: flex-start; justify-content: flex-end; }
.pill { font-size: .8rem; padding: 3px 10px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); }
.pill.ok { color: var(--ok); border-color: var(--ok); }
.pill.bad { color: var(--danger); border-color: var(--danger); }
.status-pending { color: var(--warn); }
.status-sent { color: var(--ok); }
.status-failed { color: var(--danger); }
.empty { color: var(--muted); font-style: italic; }
#discovered { margin-top: 12px; max-height: 420px; overflow-y: auto; }
#discover-filter { margin-left: 8px; }
p.error { color: var(--danger); margin: 0; }
#toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--bg);
  padding: 10px 18px;
  border-radius: 8px;
  max-width: calc(100% - 32px);
}
@media (max-width: 600px) {
  .item { flex-direction: column; }
  .item .buttons { justify-content: flex-start; }
}