.sell-form-container {
  max-width: 800px;
  margin: 2rem auto;
  padding: 2rem;
  background-color: #fff;
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.sell-form-container h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
  text-align: center;
  color: #333;
}

.sell-form-group {
  margin-bottom: 1.5rem;
}

.sell-form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: #444;
}

.sell-form-input,
.sell-form-textarea,
.sell-form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 1rem;
  background-color: #f9f9f9;
}

.sell-form-input:focus,
.sell-form-textarea:focus,
.sell-form-select:focus {
  outline: none;
  border-color: #0077cc;
  background-color: #fff;
}

.sell-form-button {
  display: inline-block;
  padding: 0.75rem 2rem;
  background-color: #0077cc;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.sell-form-button:hover {
  background-color: #005fa3;
}

.sell-form-error {
  color: #cc0000;
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

@media (max-width: 600px) {
  .sell-form-container {
    padding: 1.5rem;
  }

  .sell-form-button {
    width: 100%;
  }
}