.message-input {
  display: flex;
  gap: 8px;

  & > .field {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-base);
  }

  & > .field:focus {
    outline: none;
    border-color: var(--color-primary);
  }

  & > .upload {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: var(--font-lg);
  }

  & > .upload:hover {
    background: var(--color-bg-hover);
  }

  & > .submit {
    padding: 8px 16px;
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
  }

  & > .submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
  }

  & > .disabled {
    color: var(--color-text-muted);
    padding: 8px 0;
  }
}