/* Pak Bill Checker v10.1 */
.pbc-wrap {
  max-width: 520px;
  margin: 0 auto;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
.pbc-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.pbc-icon {
  width: 46px; height: 46px;
  background: #1d4ed8;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.pbc-title {
  font-size: 1.15rem; font-weight: 700;
  margin: 0 0 2px; color: #111827;
}
.pbc-sub {
  font-size: 0.8rem; color: #6b7280; margin: 0;
}
.pbc-form {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 18px;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
.pbc-field {
  display: flex; flex-direction: column; gap: 5px;
  margin-bottom: 12px;
}
.pbc-label {
  font-size: 0.8rem; font-weight: 600; color: #374151;
}
.pbc-input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 0.95rem;
  color: #111;
  box-sizing: border-box;
  transition: border-color .15s;
}
.pbc-input:focus {
  outline: none;
  border-color: #1d4ed8;
  box-shadow: 0 0 0 3px rgba(29,78,216,.12);
}
.pbc-hint {
  font-size: 0.75rem;
  color: #9ca3af;
}
.pbc-btn {
  width: 100%;
  padding: 11px 16px;
  background: #1d4ed8;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 7px;
  transition: background .15s;
}
.pbc-btn:hover { background: #1e40af; }
.pbc-error {
  margin: 8px 0 0;
  font-size: 0.82rem;
  color: #dc2626;
}