:root {
  font-family: "Segoe UI", system-ui, sans-serif;
  color: #12202b;
  background: #eef3f7;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: start center;
  padding: 48px 16px;
}

.card {
  width: min(640px, 100%);
  background: #fff;
  border-radius: 18px;
  padding: 32px;
  box-shadow: 0 16px 40px rgba(18, 32, 43, 0.08);
}

.card.wide {
  width: min(760px, 100%);
}

.nav {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  font-size: 14px;
  font-weight: 600;
}

.nav a {
  color: #4a5b67;
  text-decoration: none;
}

.nav a[aria-current="page"],
.nav a:hover {
  color: #0b6e99;
}

.panel {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid #e4ebf0;
}

.panel h2 {
  margin: 0 0 6px;
  font-size: 18px;
}

.hint-inline {
  margin: 0 0 12px;
  color: #4a5b67;
  font-size: 14px;
  line-height: 1.45;
}

.inline-form {
  margin-top: 0;
}

.actions.tight {
  margin-top: 4px;
}

textarea {
  border: 1px solid #cfd8df;
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  font-family: Consolas, "Courier New", monospace;
  font-size: 13px;
  resize: vertical;
  width: 100%;
  box-sizing: border-box;
}

.steps {
  margin: 0;
  padding-left: 20px;
  color: #4a5b67;
  line-height: 1.55;
  font-size: 14px;
}

.steps li + li {
  margin-top: 8px;
}

.json {
  margin: 12px 0 0;
  padding: 12px;
  background: #f3f7fa;
  border-radius: 10px;
  overflow: auto;
  font-size: 12px;
  line-height: 1.45;
  max-height: 320px;
}

.eyebrow {
  margin: 0 0 8px;
  color: #0b6e99;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 12px;
}

h1 {
  margin: 0 0 8px;
  font-size: 28px;
}

.lede, .details, .hint p {
  color: #4a5b67;
  line-height: 1.5;
}

form {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.grid {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr 1fr;
}

label {
  display: grid;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
}

input {
  border: 1px solid #cfd8df;
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
}

.button {
  margin-top: 8px;
  border: 0;
  border-radius: 10px;
  padding: 12px 16px;
  background: #0b6e99;
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  text-align: center;
}

.button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.button.secondary {
  background: #4a5b67;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.status-grid {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 8px 16px;
  margin: 20px 0 0;
}

.status-grid dt {
  margin: 0;
  color: #4a5b67;
  font-size: 13px;
  font-weight: 600;
}

.status-grid dd {
  margin: 0;
  font-family: Consolas, "Courier New", monospace;
  font-size: 13px;
  word-break: break-all;
}

#card-sdk-id {
  min-height: 170px;
  margin: 4px 0 8px;
}

.url-fields {
  margin: 8px 0 4px;
  padding: 14px 14px 4px;
  border: 1px solid #cfd8df;
  border-radius: 12px;
  background: #f7fafc;
  display: grid;
  gap: 12px;
}

.url-fields legend {
  padding: 0 6px;
  font-size: 13px;
  font-weight: 700;
  color: #0b6e99;
}

.field-hint {
  font-weight: 500;
  color: #4a5b67;
  font-size: 12px;
}

.status {
  margin: 0;
  font-size: 13px;
  color: #4a5b67;
}

.error {
  color: #b42318;
  margin: 0;
}

.hint {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid #e4ebf0;
}

code {
  background: #f3f7fa;
  padding: 2px 6px;
  border-radius: 6px;
}

@media (max-width: 640px) {
  .grid {
    grid-template-columns: 1fr;
  }
}