.cfd-simulator {
  --cfd-radius: 10px;
  --cfd-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  --cfd-shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.08);
  --cfd-primary: #2563eb;
  --cfd-primary-hover: #1d4ed8;
  --cfd-success: #059669;
  --cfd-muted: #6b7280;
  --cfd-border: #e5e7eb;
  --cfd-bg: #f8fafc;
  --cfd-error-bg: #fef2f2;
  --cfd-error-border: #fecaca;
  font-family: inherit;
  background: #fff;
  border: 1px solid var(--cfd-border);
  border-radius: var(--cfd-radius);
  box-shadow: var(--cfd-shadow);
  overflow: hidden;
  margin-bottom: 1.25rem;
}

.cfd-simulator__header {
  padding: 1rem 1.25rem;
  background: var(--cfd-bg);
  border-bottom: 1px solid var(--cfd-border);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.cfd-simulator__icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--cfd-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.cfd-simulator__icon svg {
  width: 22px;
  height: 22px;
}

.cfd-simulator__title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: #1f2937;
}

.cfd-simulator__body {
  padding: 1.25rem;
}

.cfd-simulator__weight {
  font-size: 0.875rem;
  color: var(--cfd-muted);
  margin-bottom: 1rem;
}

.cfd-simulator__weight strong {
  color: #374151;
}

.cfd-simulator__form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-end;
  margin-bottom: 1rem;
}

.cfd-simulator__cep-wrap {
  flex: 1 1 140px;
  min-width: 0;
}

.cfd-simulator__cep-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: #374151;
  margin-bottom: 0.35rem;
}

.cfd-simulator__cep-input {
  width: 100%;
  padding: 0.6rem 0.85rem;
  font-size: 1rem;
  border: 1px solid var(--cfd-border);
  border-radius: 8px;
  transition: border-color 0.2s, box-shadow 0.2s;
  box-sizing: border-box;
}

.cfd-simulator__cep-input:focus {
  outline: none;
  border-color: var(--cfd-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.cfd-simulator__cep-input::placeholder {
  color: #9ca3af;
}

.cfd-simulator__btn {
  flex-shrink: 0;
  padding: 0.6rem 1.25rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: #fff;
  background: var(--cfd-primary);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.cfd-simulator__btn:hover {
  background: var(--cfd-primary-hover);
}

.cfd-simulator__btn:active {
  transform: scale(0.98);
}

.cfd-simulator__btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.cfd-simulator__loading {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 0;
  font-size: 0.875rem;
  color: var(--cfd-muted);
}

.cfd-simulator__loading.is-hidden {
  display: none !important;
}

.cfd-simulator__spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--cfd-border);
  border-top-color: var(--cfd-primary);
  border-radius: 50%;
  animation: cfd-spin 0.7s linear infinite;
}

@keyframes cfd-spin {
  to { transform: rotate(360deg); }
}

.cfd-simulator__error {
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  color: #b91c1c;
  background: var(--cfd-error-bg);
  border: 1px solid var(--cfd-error-border);
  border-radius: 8px;
  margin-bottom: 1rem;
}

.cfd-simulator__error.is-hidden {
  display: none !important;
}

.cfd-simulator__results {
  margin-top: 1rem;
}

.cfd-simulator__results.is-hidden {
  display: none !important;
}

.cfd-simulator__results-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: #374151;
  margin-bottom: 0.75rem;
}

.cfd-simulator__carrier-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.cfd-simulator__carrier-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.85rem 1rem;
  background: var(--cfd-bg);
  border: 1px solid var(--cfd-border);
  border-radius: 8px;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.cfd-simulator__carrier-item:hover {
  box-shadow: var(--cfd-shadow);
}

.cfd-simulator__carrier-item--available {
  border-color: rgba(5, 150, 105, 0.25);
  background: rgba(5, 150, 105, 0.04);
}

.cfd-simulator__carrier-item--selectable {
  cursor: pointer;
}

.cfd-simulator__carrier-item--selectable:hover {
  border-color: var(--cfd-primary);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
}

.cfd-simulator__carrier-item--selected {
  border-color: var(--cfd-primary);
  background: rgba(37, 99, 235, 0.08);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

.cfd-simulator__carrier-name {
  font-weight: 600;
  color: #1f2937;
  font-size: 0.9375rem;
}

.cfd-simulator__carrier-details {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
}

.cfd-simulator__carrier-price {
  font-weight: 700;
  color: var(--cfd-success);
  font-size: 1rem;
}

.cfd-simulator__carrier-prazo {
  color: var(--cfd-muted);
}

.cfd-simulator__carrier-unavailable {
  color: var(--cfd-muted);
  font-size: 0.875rem;
}

@media (max-width: 480px) {
  .cfd-simulator__form {
    flex-direction: column;
    align-items: stretch;
  }

  .cfd-simulator__cep-wrap {
    flex: none;
  }

  .cfd-simulator__btn {
    width: 100%;
  }

  .cfd-simulator__carrier-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .cfd-simulator__carrier-details {
    width: 100%;
  }
}