:root {
  font-family: system-ui, sans-serif;
  background: #f3f4f6;
  color: #111827;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
}

button,
input,
textarea {
  font: inherit;
}

button {
  min-height: 44px;
  padding: 0.7rem 1rem;
  border: 0;
  border-radius: 10px;
  cursor: pointer;
  background: #111827;
  color: white;
}

button.secondary {
  background: #e5e7eb;
  color: #111827;
}

.shell {
  width: min(1100px, 100%);
  margin: 0 auto;
  padding: 1rem;
}

.card {
  background: white;
  border-radius: 16px;
  padding: 1rem;
  box-shadow: 0 8px 25px rgba(0,0,0,.06);
}

.auth-card {
  max-width: 420px;
  margin: 10vh auto;
}

.grid {
  display: grid;
  gap: 1rem;
}

.topbar,
.card-head,
.actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  flex-wrap: wrap;
}

label {
  display: grid;
  gap: .4rem;
  margin-bottom: 1rem;
}

input,
textarea {
  width: 100%;
  padding: .8rem;
  border: 1px solid #d1d5db;
  border-radius: 10px;
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
  background: #f9fafb;
  padding: .75rem;
  border-radius: 10px;
  overflow: auto;
}

.error {
  color: #b91c1c;
}

.status-ok {
  color: #166534;
  font-weight: 700;
}

.status-bad {
  color: #b91c1c;
  font-weight: 700;
}

@media (min-width: 780px) {
  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid .card:last-child {
    grid-column: 1 / -1;
  }
}