header {
  background: linear-gradient(135deg, #9f1239 0%, #e11d48 100%);
  border-bottom: none;
}

header .logo,
header .badge {
  color: white;
}

header .badge {
  background: rgba(255, 255, 255, 0.2);
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.subtitle {
  color: var(--text-muted);
  margin-top: 0.5rem;
  margin-bottom: 1rem;
}

.hint-box {
  background: #fff1f2;
  border: 1px solid #fda4af;
  color: #9f1239;
  border-radius: 10px;
  padding: 0.9rem 1rem;
  margin-bottom: 1rem;
}

.card-id-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  background: #fff;
  border: 1px solid #fecdd3;
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
  margin-bottom: 1rem;
}

.card-id-info .label {
  font-size: 0.85rem;
  color: #9f1239;
}

.card-id-info .value {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: #881337;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.form-group input {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.75rem;
  font-size: 1rem;
}

.form-group input:focus {
  outline: none;
  border-color: #e11d48;
  box-shadow: 0 0 0 3px rgba(225, 29, 72, 0.15);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.preview-card {
  background: linear-gradient(135deg, #881337 0%, #be123c 100%);
  color: white;
  border-radius: 14px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.preview-card h3 {
  margin-bottom: 0.75rem;
}

.preview-line {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.92rem;
  padding: 0.25rem 0;
}

.preview-line span {
  opacity: 0.8;
}

.tx-code-section {
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 10px;
  padding: 0.9rem;
  margin-bottom: 1rem;
}

.tx-code-display {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.tx-code-value {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: white;
  border: 1px dashed #f87171;
  border-radius: 6px;
  padding: 0.35rem 0.6rem;
  letter-spacing: 0.08rem;
}

.hidden {
  display: none;
}

#successSection {
  text-align: center;
}