* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f6f8fb;
  color: #0f172a;
}

.container {
  max-width: 960px;
  margin: 2.5rem auto;
  padding: 0 1rem 2rem;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: .5rem;
}

.btn {
  padding: .6rem 1rem;
  border: 0;
  border-radius: 8px;
  background: #2563eb;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}
.btn:disabled { opacity: .6; cursor: not-allowed; }
.btn:hover:not(:disabled) { background: #1d4ed8; }

.status {
  min-height: 1.25rem;
  margin: .25rem 0 1rem;
  font-weight: 600;
}
.status.ok { color: #065f46; }
.status.error { color: #b91c1c; }

.list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;           /* simple, wide compatibility */
  flex-wrap: wrap;
  gap: 1rem;
}

.card {
  background: #fff;
  border-radius: 12px;
  padding: 1rem;
  box-shadow: 0 6px 18px rgba(2, 6, 23, .08);
  width: 100%;
  max-width: 300px;
}

.card h3 {
  margin: 0 0 .35rem;
  font-size: 1.05rem;
}

.meta {
  margin: .25rem 0;
  color: #334155;
  font-size: .95rem;
  word-break: break-word;
}