.tracking-package-form {
  max-width: 960px;
  margin: 2rem auto;
  padding: 1rem;
  background: #f8f9fa;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
}

.tracking-package-form input[type="text"] {
  width: 77%;
  padding: 12px 15px;
  border: 2px solid #ddd;
  border-radius: 4px;
  font-size: 16px;
  transition: border-color 0.3s;
}

.tracking-package-form input[type="text"]:focus {
  border-color: #d20411;
  outline: none;
  box-shadow: 0 0 0 2px rgba(210, 4, 17, 0.2);
}

.tracking-package-form button {
  padding: 12px 20px;
  background: #d20411;
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.3s, transform 0.1s;
  margin-left: 10px;
}

.tracking-package-form button:hover {
  background: #d20411;
  transform: translateY(-1px);
}

.tracking-package-form button:active {
  transform: translateY(0);
}

#trackingResult {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: 4px;
  animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.loading {
  color: #555;
  font-style: italic;
  text-align: center;
}

.error {
  color: #d63638;
  background: #f8ebea;
  padding: 1rem;
  border-left: 4px solid #d63638;
}

.tracking-result {
  background: #f0f6fc;
  border-left: 4px solid #d20411;
  padding: 1rem;
}

.tracking-result h3 {
  margin-top: 0;
  color: #d20411;
}

.tracking-result p {
  margin-bottom: 0.5rem;
}


input.is-valid {
    border: none;
}
input.is-invalid {
    border: 2px solid #F44336 !important;
}

.tracking-success {
    background: #E8F5E9;
    padding: 15px;
    border-left: 4px solid #4CAF50;
}

/* Style responsive */
@media (max-width: 768px) {
  .tracking-package-form {
    max-width: 768px;
    padding: 1rem;
  }

  .tracking-package-form input[type="text"] {
    width: 100%;
    margin-bottom: 10px;
  }

  .tracking-package-form button {
    width: 100%;
    margin-left: 0;
  }
}

@media (max-width: 600px) {
  .tracking-package-form {
    padding: 1rem;
  }

  .tracking-package-form input[type="text"] {
    width: 100%;
    margin-bottom: 10px;
  }

  .tracking-package-form button {
    width: 100%;
    margin-left: 0;
  }
}