:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --border: #d9dce1;
  --text: #1c1f23;
  --muted: #6b7280;
  --accent: #1f6feb;
  --ok-bg: #e7f6ec;
  --ok-text: #14622f;
  --err-bg: #fdecea;
  --err-text: #8c1d18;
  --warn-bg: #fff6e0;
  --warn-text: #7a5300;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 20px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}

.topbar nav { display: flex; gap: 20px; align-items: baseline; }
.topbar a { color: var(--text); text-decoration: none; }
.topbar a:hover { color: var(--accent); }
.brand { font-weight: 600; }

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 20px 16px 60px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
}

.card.login { max-width: 360px; margin: 12vh auto 0; }

h1 { font-size: 18px; margin: 0 0 14px; }

label { display: block; margin: 12px 0 4px; font-weight: 500; }
label.checkbox { display: flex; align-items: center; gap: 8px; font-weight: 400; }
label.checkbox input { width: auto; }

input, select {
  width: 100%;
  padding: 9px 11px;
  font: inherit;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: #fff;
  color: var(--text);
}

input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
input.invalid { border-color: var(--err-text); }

.row { display: flex; gap: 12px; }
.row > * { flex: 1; min-width: 0; }

.hint, .muted { color: var(--muted); font-size: 13px; }
.hint { display: block; margin-top: 4px; }

button { font: inherit; cursor: pointer; }

button.primary {
  margin-top: 16px;
  padding: 10px 18px;
  border: 0;
  border-radius: 7px;
  background: var(--accent);
  color: #fff;
  font-weight: 500;
}

button.primary:disabled { opacity: .55; cursor: progress; }

button.link {
  border: 0;
  background: none;
  color: var(--accent);
  padding: 0;
  text-decoration: underline;
}

button.small {
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
}

.actions { display: flex; align-items: center; gap: 16px; }

.banner {
  margin: 14px 0 0;
  padding: 10px 12px;
  border-radius: 7px;
  background: var(--warn-bg);
  color: var(--warn-text);
}

.banner.ok { background: var(--ok-bg); color: var(--ok-text); }
.banner.error { background: var(--err-bg); color: var(--err-text); }

.address-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
  margin-top: 12px;
}

.address-grid > p.muted { grid-column: 1 / -1; margin: 0; }

.address-block {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  text-align: left;
  color: inherit;
}

.address-block:hover { border-color: var(--accent); }
.address-block[aria-pressed="true"] { border-color: var(--accent); background: #e3edff; }

.address-block-title { font-weight: 600; }

.status-badge {
  font-size: 12px;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--bg);
  color: var(--muted);
}

.status-badge.online { background: var(--ok-bg); color: var(--ok-text); }
.status-badge.offline { background: var(--err-bg); color: var(--err-text); }
.status-badge.checking { background: var(--bg); color: var(--muted); }

.selected { margin: 0 0 6px; }

table { width: 100%; border-collapse: collapse; margin-top: 12px; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--border); }
th { font-size: 13px; color: var(--muted); font-weight: 500; }
td.mono, .keys td:first-child { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; }

.status-ok { color: var(--ok-text); }
.status-error { color: var(--err-text); }
.status-duplicate { color: var(--warn-text); }
.status-pending { color: var(--muted); }
.status-waiting_offline { color: var(--warn-text); }

.queue-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.queue-list:empty { margin: 0; }

.queue-list li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 7px;
  font-size: 14px;
}

.queue-card { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-weight: 600; }
.queue-flat { color: var(--muted); }
.queue-status { margin-left: auto; }

@media (max-width: 520px) {
  .row { flex-direction: column; }
}